diff --git a/funasr/bin/asr_inference_paraformer_streaming.py b/funasr/bin/asr_inference_paraformer_streaming.py
index 821f69429..ff8bb8c77 100644
--- a/funasr/bin/asr_inference_paraformer_streaming.py
+++ b/funasr/bin/asr_inference_paraformer_streaming.py
@@ -8,6 +8,7 @@ import os
 import codecs
 import tempfile
 import requests
+import yaml
 from pathlib import Path
 from typing import Optional
 from typing import Sequence
@@ -19,7 +20,6 @@ from typing import List
 
 import numpy as np
 import torch
-import torchaudio
 from typeguard import check_argument_types
 
 from funasr.fileio.datadir_writer import DatadirWriter
@@ -40,11 +40,12 @@ from funasr.utils.types import str2bool
 from funasr.utils.types import str2triple_str
 from funasr.utils.types import str_or_none
 from funasr.utils import asr_utils, wav_utils, postprocess_utils
-from funasr.models.frontend.wav_frontend import WavFrontend
-from funasr.models.e2e_asr_paraformer import BiCifParaformer, ContextualParaformer
+from funasr.models.frontend.wav_frontend import WavFrontend, WavFrontendOnline
 from funasr.export.models.e2e_asr_paraformer import Paraformer as Paraformer_export
+
 np.set_printoptions(threshold=np.inf)
 
+
 class Speech2Text:
     """Speech2Text class
 
@@ -89,7 +90,7 @@ class Speech2Text:
         )
         frontend = None
         if asr_train_args.frontend is not None and asr_train_args.frontend_conf is not None:
-            frontend = WavFrontend(cmvn_file=cmvn_file, **asr_train_args.frontend_conf)
+            frontend = WavFrontendOnline(cmvn_file=cmvn_file, **asr_train_args.frontend_conf)
 
         logging.info("asr_model: {}".format(asr_model))
         logging.info("asr_train_args: {}".format(asr_train_args))
@@ -189,8 +190,7 @@ class Speech2Text:
 
     @torch.no_grad()
     def __call__(
-            self, cache: dict, speech: Union[torch.Tensor, np.ndarray], speech_lengths: Union[torch.Tensor, np.ndarray] = None,
-            begin_time: int = 0, end_time: int = None,
+            self, cache: dict, speech: Union[torch.Tensor], speech_lengths: Union[torch.Tensor] = None
     ):
         """Inference
 
@@ -201,38 +201,59 @@ class Speech2Text:
 
         """
         assert check_argument_types()
-
-        # Input as audio signal
-        if isinstance(speech, np.ndarray):
-            speech = torch.tensor(speech)
-        if self.frontend is not None:
-            feats, feats_len = self.frontend.forward(speech, speech_lengths)
-            feats = to_device(feats, device=self.device)
-            feats_len = feats_len.int()
-            self.asr_model.frontend = None
+        results = []
+        cache_en = cache["encoder"]
+        if speech.shape[1] < 16 * 60 and cache_en["is_final"]:
+            cache_en["tail_chunk"] = True
+            feats = cache_en["feats"]
+            feats_len = torch.tensor([feats.shape[1]])
+            results = self.infer(feats, feats_len, cache)
+            return results
         else:
-            feats = speech
-            feats_len = speech_lengths
-        lfr_factor = max(1, (feats.size()[-1] // 80) - 1)
-        feats_len = cache["encoder"]["stride"] + cache["encoder"]["pad_left"] + cache["encoder"]["pad_right"]
-        feats = feats[:,cache["encoder"]["start_idx"]:cache["encoder"]["start_idx"]+feats_len,:]
-        feats_len = torch.tensor([feats_len])
-        batch = {"speech": feats, "speech_lengths": feats_len, "cache": cache}
+            if self.frontend is not None:
+                feats, feats_len = self.frontend.forward(speech, speech_lengths, cache_en["is_final"])
+                feats = to_device(feats, device=self.device)
+                feats_len = feats_len.int()
+                self.asr_model.frontend = None
+            else:
+                feats = speech
+                feats_len = speech_lengths
 
-        # a. To device
+            if feats.shape[1] != 0:
+                if cache_en["is_final"]:
+                    if feats.shape[1] + cache_en["chunk_size"][2] < cache_en["chunk_size"][1]:
+                        cache_en["last_chunk"] = True
+                    else:
+                        # first chunk
+                        feats_chunk1 = feats[:, :cache_en["chunk_size"][1], :]
+                        feats_len = torch.tensor([feats_chunk1.shape[1]])
+                        results_chunk1 = self.infer(feats_chunk1, feats_len, cache)
+
+                        # last chunk
+                        cache_en["last_chunk"] = True
+                        feats_chunk2 = feats[:, -(feats.shape[1] + cache_en["chunk_size"][2] - cache_en["chunk_size"][1]):, :]
+                        feats_len = torch.tensor([feats_chunk2.shape[1]])
+                        results_chunk2 = self.infer(feats_chunk2, feats_len, cache)
+
+                        return ["".join(results_chunk1 + results_chunk2)]
+
+                results = self.infer(feats, feats_len, cache)
+
+        return results
+
+    @torch.no_grad()
+    def infer(self, feats: Union[torch.Tensor], feats_len: Union[torch.Tensor], cache: List = None):
+        batch = {"speech": feats, "speech_lengths": feats_len}
         batch = to_device(batch, device=self.device)
-
         # b. Forward Encoder
-        enc, enc_len = self.asr_model.encode_chunk(feats, feats_len, cache)
+        enc, enc_len = self.asr_model.encode_chunk(feats, feats_len, cache=cache)
         if isinstance(enc, tuple):
             enc = enc[0]
         # assert len(enc) == 1, len(enc)
         enc_len_batch_total = torch.sum(enc_len).item() * self.encoder_downsampling_factor
 
         predictor_outs = self.asr_model.calc_predictor_chunk(enc, cache)
-        pre_acoustic_embeds, pre_token_length, alphas, pre_peak_index = predictor_outs[0], predictor_outs[1], \
-                                                                        predictor_outs[2], predictor_outs[3]
-        pre_token_length = pre_token_length.floor().long()
+        pre_acoustic_embeds, pre_token_length= predictor_outs[0], predictor_outs[1]
         if torch.max(pre_token_length) < 1:
             return []
         decoder_outs = self.asr_model.cal_decoder_with_predictor_chunk(enc, pre_acoustic_embeds, cache)
@@ -279,166 +300,12 @@ class Speech2Text:
                     text = self.tokenizer.tokens2text(token)
                 else:
                     text = None
-
-                results.append((text, token, token_int, hyp, enc_len_batch_total, lfr_factor))
+                results.append(text)
 
         # assert check_return_type(results)
         return results
 
 
-class Speech2TextExport:
-    """Speech2TextExport class
-
-    """
-
-    def __init__(
-            self,
-            asr_train_config: Union[Path, str] = None,
-            asr_model_file: Union[Path, str] = None,
-            cmvn_file: Union[Path, str] = None,
-            lm_train_config: Union[Path, str] = None,
-            lm_file: Union[Path, str] = None,
-            token_type: str = None,
-            bpemodel: str = None,
-            device: str = "cpu",
-            maxlenratio: float = 0.0,
-            minlenratio: float = 0.0,
-            dtype: str = "float32",
-            beam_size: int = 20,
-            ctc_weight: float = 0.5,
-            lm_weight: float = 1.0,
-            ngram_weight: float = 0.9,
-            penalty: float = 0.0,
-            nbest: int = 1,
-            frontend_conf: dict = None,
-            hotword_list_or_file: str = None,
-            **kwargs,
-    ):
-
-        # 1. Build ASR model
-        asr_model, asr_train_args = ASRTask.build_model_from_file(
-            asr_train_config, asr_model_file, cmvn_file, device
-        )
-        frontend = None
-        if asr_train_args.frontend is not None and asr_train_args.frontend_conf is not None:
-            frontend = WavFrontend(cmvn_file=cmvn_file, **asr_train_args.frontend_conf)
-
-        logging.info("asr_model: {}".format(asr_model))
-        logging.info("asr_train_args: {}".format(asr_train_args))
-        asr_model.to(dtype=getattr(torch, dtype)).eval()
-
-        token_list = asr_model.token_list
-
-        logging.info(f"Decoding device={device}, dtype={dtype}")
-
-        # 5. [Optional] Build Text converter: e.g. bpe-sym -> Text
-        if token_type is None:
-            token_type = asr_train_args.token_type
-        if bpemodel is None:
-            bpemodel = asr_train_args.bpemodel
-
-        if token_type is None:
-            tokenizer = None
-        elif token_type == "bpe":
-            if bpemodel is not None:
-                tokenizer = build_tokenizer(token_type=token_type, bpemodel=bpemodel)
-            else:
-                tokenizer = None
-        else:
-            tokenizer = build_tokenizer(token_type=token_type)
-        converter = TokenIDConverter(token_list=token_list)
-        logging.info(f"Text tokenizer: {tokenizer}")
-
-        # self.asr_model = asr_model
-        self.asr_train_args = asr_train_args
-        self.converter = converter
-        self.tokenizer = tokenizer
-
-        self.device = device
-        self.dtype = dtype
-        self.nbest = nbest
-        self.frontend = frontend
-
-        model = Paraformer_export(asr_model, onnx=False)
-        self.asr_model = model
-
-    @torch.no_grad()
-    def __call__(
-            self, speech: Union[torch.Tensor, np.ndarray], speech_lengths: Union[torch.Tensor, np.ndarray] = None
-    ):
-        """Inference
-
-        Args:
-                speech: Input speech data
-        Returns:
-                text, token, token_int, hyp
-
-        """
-        assert check_argument_types()
-
-        # Input as audio signal
-        if isinstance(speech, np.ndarray):
-            speech = torch.tensor(speech)
-
-        if self.frontend is not None:
-            feats, feats_len = self.frontend.forward(speech, speech_lengths)
-            feats = to_device(feats, device=self.device)
-            feats_len = feats_len.int()
-            self.asr_model.frontend = None
-        else:
-            feats = speech
-            feats_len = speech_lengths
-
-        enc_len_batch_total = feats_len.sum()
-        lfr_factor = max(1, (feats.size()[-1] // 80) - 1)
-        batch = {"speech": feats, "speech_lengths": feats_len}
-
-        # a. To device
-        batch = to_device(batch, device=self.device)
-
-        decoder_outs = self.asr_model(**batch)
-        decoder_out, ys_pad_lens = decoder_outs[0], decoder_outs[1]
-
-        results = []
-        b, n, d = decoder_out.size()
-        for i in range(b):
-            am_scores = decoder_out[i, :ys_pad_lens[i], :]
-
-            yseq = am_scores.argmax(dim=-1)
-            score = am_scores.max(dim=-1)[0]
-            score = torch.sum(score, dim=-1)
-            # pad with mask tokens to ensure compatibility with sos/eos tokens
-            yseq = torch.tensor(
-                yseq.tolist(), device=yseq.device
-            )
-            nbest_hyps = [Hypothesis(yseq=yseq, score=score)]
-
-            for hyp in nbest_hyps:
-                assert isinstance(hyp, (Hypothesis)), type(hyp)
-
-                # remove sos/eos and get results
-                last_pos = -1
-                if isinstance(hyp.yseq, list):
-                    token_int = hyp.yseq[1:last_pos]
-                else:
-                    token_int = hyp.yseq[1:last_pos].tolist()
-
-                # remove blank symbol id, which is assumed to be 0
-                token_int = list(filter(lambda x: x != 0 and x != 2, token_int))
-
-                # Change integer-ids to tokens
-                token = self.converter.ids2tokens(token_int)
-
-                if self.tokenizer is not None:
-                    text = self.tokenizer.tokens2text(token)
-                else:
-                    text = None
-
-                results.append((text, token, token_int, hyp, enc_len_batch_total, lfr_factor))
-
-        return results
-
-
 def inference(
         maxlenratio: float,
         minlenratio: float,
@@ -536,8 +403,6 @@ def inference_modelscope(
         **kwargs,
 ):
     assert check_argument_types()
-    ncpu = kwargs.get("ncpu", 1)
-    torch.set_num_threads(ncpu)
 
     if word_lm_train_config is not None:
         raise NotImplementedError("Word LM is not implemented")
@@ -580,11 +445,9 @@ def inference_modelscope(
         penalty=penalty,
         nbest=nbest,
     )
-    if export_mode:
-        speech2text = Speech2TextExport(**speech2text_kwargs)
-    else:
-        speech2text = Speech2Text(**speech2text_kwargs)
-        
+
+    speech2text = Speech2Text(**speech2text_kwargs)
+
     def _load_bytes(input):
         middle_data = np.frombuffer(input, dtype=np.int16)
         middle_data = np.asarray(middle_data)
@@ -599,7 +462,46 @@ def inference_modelscope(
         offset = i.min + abs_max
         array = np.frombuffer((middle_data.astype(dtype) - offset) / abs_max, dtype=np.float32)
         return array
-    
+
+    def _read_yaml(yaml_path: Union[str, Path]) -> Dict:
+        if not Path(yaml_path).exists():
+            raise FileExistsError(f'The {yaml_path} does not exist.')
+
+        with open(str(yaml_path), 'rb') as f:
+            data = yaml.load(f, Loader=yaml.Loader)
+        return data
+
+    def _prepare_cache(cache: dict = {}, chunk_size=[5,10,5], batch_size=1):
+        if len(cache) > 0:
+            return cache
+        config = _read_yaml(asr_train_config)
+        enc_output_size = config["encoder_conf"]["output_size"]
+        feats_dims = config["frontend_conf"]["n_mels"] * config["frontend_conf"]["lfr_m"]
+        cache_en = {"start_idx": 0, "cif_hidden": torch.zeros((batch_size, 1, enc_output_size)),
+                    "cif_alphas": torch.zeros((batch_size, 1)), "chunk_size": chunk_size, "last_chunk": False,
+                    "feats": torch.zeros((batch_size, chunk_size[0] + chunk_size[2], feats_dims)), "tail_chunk": False}
+        cache["encoder"] = cache_en
+
+        cache_de = {"decode_fsmn": None}
+        cache["decoder"] = cache_de
+
+        return cache
+
+    def _cache_reset(cache: dict = {}, chunk_size=[5,10,5], batch_size=1):
+        if len(cache) > 0:
+            config = _read_yaml(asr_train_config)
+            enc_output_size = config["encoder_conf"]["output_size"]
+            feats_dims = config["frontend_conf"]["n_mels"] * config["frontend_conf"]["lfr_m"]
+            cache_en = {"start_idx": 0, "cif_hidden": torch.zeros((batch_size, 1, enc_output_size)),
+                        "cif_alphas": torch.zeros((batch_size, 1)), "chunk_size": chunk_size, "last_chunk": False,
+                        "feats": torch.zeros((batch_size, chunk_size[0] + chunk_size[2], feats_dims)), "tail_chunk": False}
+            cache["encoder"] = cache_en
+
+            cache_de = {"decode_fsmn": None}
+            cache["decoder"] = cache_de
+
+        return cache
+
     def _forward(
             data_path_and_name_and_type,
             raw_inputs: Union[np.ndarray, torch.Tensor] = None,
@@ -610,123 +512,35 @@ def inference_modelscope(
     ):
 
         # 3. Build data-iterator
+        if data_path_and_name_and_type is not None and data_path_and_name_and_type[2] == "bytes":
+            raw_inputs = _load_bytes(data_path_and_name_and_type[0])
+            raw_inputs = torch.tensor(raw_inputs)
+        if data_path_and_name_and_type is None and raw_inputs is not None:
+            if isinstance(raw_inputs, np.ndarray):
+                raw_inputs = torch.tensor(raw_inputs)
         is_final = False
         cache = {}
+        chunk_size = [5, 10, 5]
         if param_dict is not None and "cache" in param_dict:
             cache = param_dict["cache"]
         if param_dict is not None and "is_final" in param_dict:
             is_final = param_dict["is_final"]
+        if param_dict is not None and "chunk_size" in param_dict:
+            chunk_size = param_dict["chunk_size"]
 
-        if data_path_and_name_and_type is not None and data_path_and_name_and_type[2] == "bytes":
-            raw_inputs = _load_bytes(data_path_and_name_and_type[0])
-            raw_inputs = torch.tensor(raw_inputs)
-        if data_path_and_name_and_type is not None and data_path_and_name_and_type[2] == "sound":
-            raw_inputs = torchaudio.load(data_path_and_name_and_type[0])[0][0]
-            is_final = True
-        if data_path_and_name_and_type is None and raw_inputs is not None:
-            if isinstance(raw_inputs, np.ndarray):
-                raw_inputs = torch.tensor(raw_inputs)
         # 7 .Start for-loop
         # FIXME(kamo): The output format should be discussed about
+        raw_inputs = torch.unsqueeze(raw_inputs, axis=0)
+        input_lens = torch.tensor([raw_inputs.shape[1]])
         asr_result_list = []
-        results = []
-        asr_result = ""
-        wait = True
-        if len(cache) == 0:
-            cache["encoder"] = {"start_idx": 0, "pad_left": 0, "stride": 10, "pad_right": 5, "cif_hidden": None, "cif_alphas": None, "is_final": is_final, "left": 0, "right": 0}
-            cache_de = {"decode_fsmn": None}
-            cache["decoder"] = cache_de
-            cache["first_chunk"] = True
-            cache["speech"] = []
-            cache["accum_speech"] = 0
 
-        if raw_inputs is not None:
-            if len(cache["speech"]) == 0:
-                cache["speech"] = raw_inputs
-            else:
-                cache["speech"] = torch.cat([cache["speech"], raw_inputs], dim=0)
-            cache["accum_speech"] += len(raw_inputs)
-            while cache["accum_speech"] >= 960:
-                if cache["first_chunk"]:
-                    if cache["accum_speech"] >= 14400:
-                        speech = torch.unsqueeze(cache["speech"], axis=0)
-                        speech_length = torch.tensor([len(cache["speech"])])
-                        cache["encoder"]["pad_left"] = 5 
-                        cache["encoder"]["pad_right"] = 5 
-                        cache["encoder"]["stride"] = 10
-                        cache["encoder"]["left"] = 5
-                        cache["encoder"]["right"] = 0
-                        results = speech2text(cache, speech, speech_length)
-                        cache["accum_speech"] -= 4800
-                        cache["first_chunk"] = False
-                        cache["encoder"]["start_idx"] = -5
-                        cache["encoder"]["is_final"] = False
-                        wait = False
-                    else:
-                        if is_final:
-                            cache["encoder"]["stride"] = len(cache["speech"]) // 960
-                            cache["encoder"]["pad_left"] = 0
-                            cache["encoder"]["pad_right"] = 0
-                            speech = torch.unsqueeze(cache["speech"], axis=0)
-                            speech_length = torch.tensor([len(cache["speech"])])
-                            results = speech2text(cache, speech, speech_length)
-                            cache["accum_speech"] = 0
-                            wait = False
-                        else:
-                            break
-                else:
-                    if cache["accum_speech"] >= 19200:
-                        cache["encoder"]["start_idx"] += 10
-                        cache["encoder"]["stride"] = 10
-                        cache["encoder"]["pad_left"] = 5
-                        cache["encoder"]["pad_right"] = 5
-                        cache["encoder"]["left"] = 0
-                        cache["encoder"]["right"] = 0
-                        speech = torch.unsqueeze(cache["speech"], axis=0)
-                        speech_length = torch.tensor([len(cache["speech"])])
-                        results = speech2text(cache, speech, speech_length)
-                        cache["accum_speech"] -= 9600
-                        wait = False
-                    else:
-                        if is_final:
-                            cache["encoder"]["is_final"] = True
-                            if cache["accum_speech"] >= 14400:
-                                cache["encoder"]["start_idx"] += 10
-                                cache["encoder"]["stride"] = 10
-                                cache["encoder"]["pad_left"] = 5
-                                cache["encoder"]["pad_right"] = 5
-                                cache["encoder"]["left"] = 0
-                                cache["encoder"]["right"] = cache["accum_speech"] // 960 - 15
-                                speech = torch.unsqueeze(cache["speech"], axis=0)
-                                speech_length = torch.tensor([len(cache["speech"])])
-                                results = speech2text(cache, speech, speech_length)
-                                cache["accum_speech"] -= 9600
-                                wait = False
-                            else:
-                                cache["encoder"]["start_idx"] += 10
-                                cache["encoder"]["stride"] = cache["accum_speech"] // 960 - 5
-                                cache["encoder"]["pad_left"] = 5
-                                cache["encoder"]["pad_right"] = 0
-                                cache["encoder"]["left"] = 0
-                                cache["encoder"]["right"] = 0
-                                speech = torch.unsqueeze(cache["speech"], axis=0)
-                                speech_length = torch.tensor([len(cache["speech"])])
-                                results = speech2text(cache, speech, speech_length)
-                                cache["accum_speech"] = 0
-                                wait = False
-                        else:
-                            break
-                
-                if len(results) >= 1:
-                    asr_result += results[0][0]
-            if asr_result == "":
-                asr_result = "sil"
-            if wait:
-                asr_result = "waiting_for_more_voice"
-            item = {'key': "utt", 'value': asr_result}
-            asr_result_list.append(item)
-        else:
-            return []
+        cache = _prepare_cache(cache, chunk_size=chunk_size, batch_size=1)
+        cache["encoder"]["is_final"] = is_final
+        asr_result = speech2text(cache, raw_inputs, input_lens)
+        item = {'key': "utt", 'value': asr_result}
+        asr_result_list.append(item)
+        if is_final:
+            cache = _cache_reset(cache, chunk_size=chunk_size, batch_size=1)
         return asr_result_list
 
     return _forward
@@ -920,5 +734,3 @@ if __name__ == "__main__":
     #
     # rec_result = inference_16k_pipline(audio_in='https://isv-data.oss-cn-hangzhou.aliyuncs.com/ics/MaaS/ASR/test_audio/asr_example_zh.wav')
     # print(rec_result)
-
-
diff --git a/funasr/models/e2e_asr_paraformer.py b/funasr/models/e2e_asr_paraformer.py
index 699d85fdb..d02783f49 100644
--- a/funasr/models/e2e_asr_paraformer.py
+++ b/funasr/models/e2e_asr_paraformer.py
@@ -712,9 +712,9 @@ class ParaformerOnline(Paraformer):
 
     def calc_predictor_chunk(self, encoder_out, cache=None):
 
-        pre_acoustic_embeds, pre_token_length, alphas, pre_peak_index = \
+        pre_acoustic_embeds, pre_token_length = \
             self.predictor.forward_chunk(encoder_out, cache["encoder"])
-        return pre_acoustic_embeds, pre_token_length, alphas, pre_peak_index
+        return pre_acoustic_embeds, pre_token_length
 
     def cal_decoder_with_predictor_chunk(self, encoder_out, sematic_embeds, cache=None):
         decoder_outs = self.decoder.forward_chunk(
diff --git a/funasr/models/encoder/sanm_encoder.py b/funasr/models/encoder/sanm_encoder.py
index f2502bbb6..969ddadf2 100644
--- a/funasr/models/encoder/sanm_encoder.py
+++ b/funasr/models/encoder/sanm_encoder.py
@@ -6,9 +6,11 @@ from typing import Union
 import logging
 import torch
 import torch.nn as nn
+import torch.nn.functional as F
 from funasr.modules.streaming_utils.chunk_utilis import overlap_chunk
 from typeguard import check_argument_types
 import numpy as np
+from funasr.torch_utils.device_funcs import to_device
 from funasr.modules.nets_utils import make_pad_mask
 from funasr.modules.attention import MultiHeadedAttention, MultiHeadedAttentionSANM, MultiHeadedAttentionSANMwithMask
 from funasr.modules.embedding import SinusoidalPositionEncoder, StreamSinusoidalPositionEncoder
@@ -349,6 +351,23 @@ class SANMEncoder(AbsEncoder):
             return (xs_pad, intermediate_outs), olens, None
         return xs_pad, olens, None
 
+    def _add_overlap_chunk(self, feats: np.ndarray, cache: dict = {}):
+        if len(cache) == 0:
+            return feats
+        # process last chunk
+        cache["feats"] = to_device(cache["feats"], device=feats.device)
+        overlap_feats = torch.cat((cache["feats"], feats), dim=1)
+        if cache["is_final"]:
+            cache["feats"] = overlap_feats[:, -cache["chunk_size"][0]:, :]
+            if not cache["last_chunk"]:
+               padding_length = sum(cache["chunk_size"]) - overlap_feats.shape[1]
+               overlap_feats = overlap_feats.transpose(1, 2)
+               overlap_feats = F.pad(overlap_feats, (0, padding_length))
+               overlap_feats = overlap_feats.transpose(1, 2)
+        else:
+            cache["feats"] = overlap_feats[:, -(cache["chunk_size"][0] + cache["chunk_size"][2]):, :]
+        return overlap_feats
+
     def forward_chunk(self,
                       xs_pad: torch.Tensor,
                       ilens: torch.Tensor,
@@ -360,7 +379,10 @@ class SANMEncoder(AbsEncoder):
             xs_pad = xs_pad
         else:
             xs_pad = self.embed(xs_pad, cache)
-
+        if cache["tail_chunk"]:
+            xs_pad = cache["feats"]
+        else:
+            xs_pad = self._add_overlap_chunk(xs_pad, cache)
         encoder_outs = self.encoders0(xs_pad, None, None, None, None)
         xs_pad, masks = encoder_outs[0], encoder_outs[1]
         intermediate_outs = []
diff --git a/funasr/models/predictor/cif.py b/funasr/models/predictor/cif.py
index a5273f841..c59e24502 100644
--- a/funasr/models/predictor/cif.py
+++ b/funasr/models/predictor/cif.py
@@ -2,6 +2,7 @@ import torch
 from torch import nn
 import logging
 import numpy as np
+from funasr.torch_utils.device_funcs import to_device
 from funasr.modules.nets_utils import make_pad_mask
 from funasr.modules.streaming_utils.utils import sequence_mask
 
@@ -200,7 +201,7 @@ class CifPredictorV2(nn.Module):
         return acoustic_embeds, token_num, alphas, cif_peak
 
     def forward_chunk(self, hidden, cache=None):
-        b, t, d = hidden.size()
+        batch_size, len_time, hidden_size = hidden.shape
         h = hidden
         context = h.transpose(1, 2)
         queries = self.pad(context)
@@ -211,58 +212,81 @@ class CifPredictorV2(nn.Module):
         alphas = torch.nn.functional.relu(alphas * self.smooth_factor - self.noise_threshold)
 
         alphas = alphas.squeeze(-1)
-        mask_chunk_predictor = None
-        if cache is not None:
-            mask_chunk_predictor = None
-            mask_chunk_predictor = torch.zeros_like(alphas)
-            mask_chunk_predictor[:, cache["pad_left"]:cache["stride"] + cache["pad_left"]] = 1.0
-       
-        if mask_chunk_predictor is not None:
-            alphas = alphas * mask_chunk_predictor
-      
-        if cache is not None:
-            if cache["is_final"]:
-                alphas[:, cache["stride"] + cache["pad_left"] - 1] += 0.45
-            if cache["cif_hidden"] is not None:
-                hidden = torch.cat((cache["cif_hidden"], hidden), 1)
-            if cache["cif_alphas"] is not None:
-                alphas = torch.cat((cache["cif_alphas"], alphas), -1)
 
-        token_num = alphas.sum(-1)
-        acoustic_embeds, cif_peak = cif(hidden, alphas, self.threshold)
-        len_time = alphas.size(-1)
-        last_fire_place = len_time - 1
-        last_fire_remainds = 0.0
-        pre_alphas_length = 0
-        last_fire = False
- 
-        mask_chunk_peak_predictor = None
-        if cache is not None:
-            mask_chunk_peak_predictor = None
-            mask_chunk_peak_predictor = torch.zeros_like(cif_peak)
-            if cache["cif_alphas"] is not None:
-                pre_alphas_length = cache["cif_alphas"].size(-1)
-                mask_chunk_peak_predictor[:, :pre_alphas_length] = 1.0
-            mask_chunk_peak_predictor[:, pre_alphas_length + cache["pad_left"]:pre_alphas_length + cache["stride"] + cache["pad_left"]] = 1.0
-            
-        if mask_chunk_peak_predictor is not None:
-            cif_peak = cif_peak * mask_chunk_peak_predictor.squeeze(-1)
-        
-        for i in range(len_time):
-            if cif_peak[0][len_time - 1 - i] > self.threshold or cif_peak[0][len_time - 1 - i] == self.threshold:
-                last_fire_place = len_time - 1 - i
-                last_fire_remainds = cif_peak[0][len_time - 1 - i] - self.threshold
-                last_fire = True
-                break
-        if last_fire:
-           last_fire_remainds = torch.tensor([last_fire_remainds], dtype=alphas.dtype).to(alphas.device)
-           cache["cif_hidden"] = hidden[:, last_fire_place:, :]
-           cache["cif_alphas"] = torch.cat((last_fire_remainds.unsqueeze(0), alphas[:, last_fire_place+1:]), -1)
-        else:
-           cache["cif_hidden"] = hidden
-           cache["cif_alphas"] = alphas
-        token_num_int = token_num.floor().type(torch.int32).item()
-        return acoustic_embeds[:, 0:token_num_int, :], token_num, alphas, cif_peak
+        token_length = []
+        list_fires = []
+        list_frames = []
+        cache_alphas = []
+        cache_hiddens = []
+
+        if cache is not None and "chunk_size" in cache:
+            alphas[:, :cache["chunk_size"][0]] = 0.0
+            alphas[:, sum(cache["chunk_size"][:2]):] = 0.0
+        if cache is not None and "cif_alphas" in cache and "cif_hidden" in cache:
+            cache["cif_hidden"] = to_device(cache["cif_hidden"], device=hidden.device)
+            cache["cif_alphas"] = to_device(cache["cif_alphas"], device=alphas.device)
+            hidden = torch.cat((cache["cif_hidden"], hidden), dim=1)
+            alphas = torch.cat((cache["cif_alphas"], alphas), dim=1)
+        if cache is not None and "last_chunk" in cache and cache["last_chunk"]:
+            tail_hidden = torch.zeros((batch_size, 1, hidden_size), device=hidden.device)
+            tail_alphas = torch.tensor([[self.tail_threshold]], device=alphas.device)
+            tail_alphas = torch.tile(tail_alphas, (batch_size, 1))
+            hidden = torch.cat((hidden, tail_hidden), dim=1)
+            alphas = torch.cat((alphas, tail_alphas), dim=1)
+
+        len_time = alphas.shape[1]
+        for b in range(batch_size):
+            integrate = 0.0
+            frames = torch.zeros((hidden_size), device=hidden.device)
+            list_frame = []
+            list_fire = []
+            for t in range(len_time):
+                alpha = alphas[b][t]
+                if alpha + integrate < self.threshold:
+                    integrate += alpha
+                    list_fire.append(integrate)
+                    frames += alpha * hidden[b][t]
+                else:
+                    frames += (self.threshold - integrate) * hidden[b][t]
+                    list_frame.append(frames)
+                    integrate += alpha
+                    list_fire.append(integrate)
+                    integrate -= self.threshold
+                    frames = integrate * hidden[b][t]
+
+            cache_alphas.append(integrate)
+            if integrate > 0.0:
+                cache_hiddens.append(frames / integrate)
+            else:
+                cache_hiddens.append(frames)
+
+            token_length.append(torch.tensor(len(list_frame), device=alphas.device))
+            list_fires.append(list_fire)
+            list_frames.append(list_frame)
+
+        cache["cif_alphas"] = torch.stack(cache_alphas, axis=0)
+        cache["cif_alphas"] = torch.unsqueeze(cache["cif_alphas"], axis=0)
+        cache["cif_hidden"] = torch.stack(cache_hiddens, axis=0)
+        cache["cif_hidden"] = torch.unsqueeze(cache["cif_hidden"], axis=0)
+
+        max_token_len = max(token_length)
+        if max_token_len == 0:
+             return hidden, torch.stack(token_length, 0)
+        list_ls = []
+        for b in range(batch_size):
+            pad_frames = torch.zeros((max_token_len - token_length[b], hidden_size), device=alphas.device)
+            if token_length[b] == 0:
+                list_ls.append(pad_frames)
+            else:
+                list_frames[b] = torch.stack(list_frames[b])
+                list_ls.append(torch.cat((list_frames[b], pad_frames), dim=0))
+
+        cache["cif_alphas"] = torch.stack(cache_alphas, axis=0)
+        cache["cif_alphas"] = torch.unsqueeze(cache["cif_alphas"], axis=0)
+        cache["cif_hidden"] = torch.stack(cache_hiddens, axis=0)
+        cache["cif_hidden"] = torch.unsqueeze(cache["cif_hidden"], axis=0)
+        return torch.stack(list_ls, 0), torch.stack(token_length, 0)
+
 
     def tail_process_fn(self, hidden, alphas, token_num=None, mask=None):
         b, t, d = hidden.size()
diff --git a/funasr/modules/embedding.py b/funasr/modules/embedding.py
index c347e24f1..aaac80a7d 100644
--- a/funasr/modules/embedding.py
+++ b/funasr/modules/embedding.py
@@ -425,21 +425,14 @@ class StreamSinusoidalPositionEncoder(torch.nn.Module):
         return encoding.type(dtype)
 
     def forward(self, x, cache=None):
-        start_idx = 0
-        pad_left = 0
-        pad_right = 0
         batch_size, timesteps, input_dim = x.size()
+        start_idx = 0
         if cache is not None:
             start_idx = cache["start_idx"]
-            pad_left = cache["left"]
-            pad_right = cache["right"]
+            cache["start_idx"] += timesteps
         positions = torch.arange(1, timesteps+start_idx+1)[None, :]
         position_encoding = self.encode(positions, input_dim, x.dtype).to(x.device)
-        outputs = x + position_encoding[:, start_idx: start_idx + timesteps]
-        outputs = outputs.transpose(1, 2)
-        outputs = F.pad(outputs, (pad_left, pad_right))
-        outputs = outputs.transpose(1, 2)
-        return outputs
+        return x + position_encoding[:, start_idx: start_idx + timesteps]
 
 class StreamingRelPositionalEncoding(torch.nn.Module):
     """Relative positional encoding.
diff --git a/funasr/runtime/python/websocket/ASR_client.py b/funasr/runtime/python/websocket/ASR_client.py
deleted file mode 100644
index fe6798127..000000000
--- a/funasr/runtime/python/websocket/ASR_client.py
+++ /dev/null
@@ -1,100 +0,0 @@
-import pyaudio
-# import websocket #区别服务端这里是 websocket-client库
-import time
-import websockets
-import asyncio
-from queue import Queue
-# import threading
-import argparse
-
-parser = argparse.ArgumentParser()
-parser.add_argument("--host",
-                    type=str,
-                    default="localhost",
-                    required=False,
-                    help="host ip, localhost, 0.0.0.0")
-parser.add_argument("--port",
-                    type=int,
-                    default=10095,
-                    required=False,
-                    help="grpc server port")
-parser.add_argument("--chunk_size",
-                    type=int,
-                    default=300,
-                    help="ms")
-
-args = parser.parse_args()
-
-voices = Queue()
-
-
-    
-# 其他函数可以通过调用send(data)来发送数据，例如：
-async def record():
-    #print("2")
-    global voices 
-    FORMAT = pyaudio.paInt16
-    CHANNELS = 1
-    RATE = 16000
-    CHUNK = int(RATE / 1000 * args.chunk_size)
-
-    p = pyaudio.PyAudio()
-
-    stream = p.open(format=FORMAT,
-                    channels=CHANNELS,
-                    rate=RATE,
-                    input=True,
-                    frames_per_buffer=CHUNK)
-
-    while True:
-
-        data = stream.read(CHUNK)
-        
-        voices.put(data)
-        #print(voices.qsize())
-
-        await asyncio.sleep(0.01)
-    
-
-
-async def ws_send():
-    global voices
-    global websocket
-    print("started to sending data!")
-    while True:
-        while not voices.empty():
-            data = voices.get()
-            voices.task_done()
-            try:
-                await websocket.send(data) # 通过ws对象发送数据
-            except Exception as e:
-                print('Exception occurred:', e)
-            await asyncio.sleep(0.01)
-        await asyncio.sleep(0.01)
-
-
-
-async def message():
-    global websocket
-    while True:
-        try:
-            print(await websocket.recv())
-        except Exception as e:
-            print("Exception:", e)          
-        
-
-
-async def ws_client():
-    global websocket # 定义一个全局变量ws，用于保存websocket连接对象
-    # uri = "ws://11.167.134.197:8899"
-    uri = "ws://{}:{}".format(args.host, args.port)
-    #ws = await websockets.connect(uri, subprotocols=["binary"]) # 创建一个长连接
-    async for websocket in websockets.connect(uri, subprotocols=["binary"], ping_interval=None):
-        task = asyncio.create_task(record()) # 创建一个后台任务录音
-        task2 = asyncio.create_task(ws_send()) # 创建一个后台任务发送
-        task3 = asyncio.create_task(message()) # 创建一个后台接收消息的任务
-        await asyncio.gather(task, task2, task3)
-
-
-asyncio.get_event_loop().run_until_complete(ws_client()) # 启动协程
-asyncio.get_event_loop().run_forever()
diff --git a/funasr/runtime/python/websocket/ASR_server.py b/funasr/runtime/python/websocket/ASR_server.py
deleted file mode 100644
index 827df7b58..000000000
--- a/funasr/runtime/python/websocket/ASR_server.py
+++ /dev/null
@@ -1,185 +0,0 @@
-import asyncio
-import websockets
-import time
-from queue import Queue
-import threading
-import argparse
-
-from modelscope.pipelines import pipeline
-from modelscope.utils.constant import Tasks
-from modelscope.utils.logger import get_logger
-import logging
-import tracemalloc
-tracemalloc.start()
-
-logger = get_logger(log_level=logging.CRITICAL)
-logger.setLevel(logging.CRITICAL)
-
-
-websocket_users = set()  #维护客户端列表
-
-parser = argparse.ArgumentParser()
-parser.add_argument("--host",
-                    type=str,
-                    default="0.0.0.0",
-                    required=False,
-                    help="host ip, localhost, 0.0.0.0")
-parser.add_argument("--port",
-                    type=int,
-                    default=10095,
-                    required=False,
-                    help="grpc server port")
-parser.add_argument("--asr_model",
-                    type=str,
-                    default="damo/speech_paraformer-large_asr_nat-zh-cn-16k-common-vocab8404-pytorch",
-                    help="model from modelscope")
-parser.add_argument("--vad_model",
-                    type=str,
-                    default="damo/speech_fsmn_vad_zh-cn-16k-common-pytorch",
-                    help="model from modelscope")
-
-parser.add_argument("--punc_model",
-                    type=str,
-                    default="",
-                    help="model from modelscope")
-parser.add_argument("--ngpu",
-                    type=int,
-                    default=1,
-                    help="0 for cpu, 1 for gpu")
-
-args = parser.parse_args()
-
-print("model loading")
- 
-
-# vad
-inference_pipeline_vad = pipeline(
-    task=Tasks.voice_activity_detection,
-    model=args.vad_model,
-    model_revision=None,
-    output_dir=None,
-    batch_size=1,
-    mode='online',
-    ngpu=args.ngpu,
-)
-# param_dict_vad = {'in_cache': dict(), "is_final": False}
-  
-# asr
-param_dict_asr = {}
-# param_dict["hotword"] = "小五 小五月"  # 设置热词，用空格隔开
-inference_pipeline_asr = pipeline(
-    task=Tasks.auto_speech_recognition,
-    model=args.asr_model,
-    param_dict=param_dict_asr,
-    ngpu=args.ngpu,
-)
-if args.punc_model != "":
-    # param_dict_punc = {'cache': list()}
-    inference_pipeline_punc = pipeline(
-        task=Tasks.punctuation,
-        model=args.punc_model,
-        model_revision=None,
-        ngpu=args.ngpu,
-    )
-else:
-    inference_pipeline_punc = None
-
-print("model loaded")
-
-
-
-async def ws_serve(websocket, path):
-    #speek = Queue()
-    frames = []  # 存储所有的帧数据
-    buffer = []  # 存储缓存中的帧数据（最多两个片段）
-    RECORD_NUM = 0
-    global websocket_users
-    speech_start, speech_end = False, False
-    # 调用asr函数
-    websocket.param_dict_vad = {'in_cache': dict(), "is_final": False}
-    websocket.param_dict_punc = {'cache': list()}
-    websocket.speek = Queue()  #websocket 添加进队列对象 让asr读取语音数据包
-    websocket.send_msg = Queue()   #websocket 添加个队列对象  让ws发送消息到客户端
-    websocket_users.add(websocket)
-    ss = threading.Thread(target=asr, args=(websocket,))
-    ss.start()
-    
-    try:
-        async for message in websocket:
-            #voices.put(message)
-            #print("put")
-            #await websocket.send("123")
-            buffer.append(message)
-            if len(buffer) > 2:
-                buffer.pop(0)  # 如果缓存超过两个片段，则删除最早的一个
-              
-            if speech_start:
-                frames.append(message)
-                RECORD_NUM += 1
-            speech_start_i, speech_end_i = vad(message, websocket)
-            #print(speech_start_i, speech_end_i)
-            if speech_start_i:
-                speech_start = speech_start_i
-                frames = []
-                frames.extend(buffer)  # 把之前2个语音数据快加入
-            if speech_end_i or RECORD_NUM > 300:
-                speech_start = False
-                audio_in = b"".join(frames)
-                websocket.speek.put(audio_in)
-                frames = []  # 清空所有的帧数据
-                buffer = []  # 清空缓存中的帧数据（最多两个片段）
-                RECORD_NUM = 0
-            if not websocket.send_msg.empty():
-                await websocket.send(websocket.send_msg.get())
-                websocket.send_msg.task_done()
-
-     
-    except websockets.ConnectionClosed:
-        print("ConnectionClosed...", websocket_users)    # 链接断开
-        websocket_users.remove(websocket)
-    except websockets.InvalidState:
-        print("InvalidState...")    # 无效状态
-    except Exception as e:
-        print("Exception:", e)
- 
-
-def asr(websocket):  # ASR推理
-        global inference_pipeline_asr, inference_pipeline_punc
-        # global param_dict_punc
-        global websocket_users
-        while websocket in  websocket_users:
-            if not websocket.speek.empty():
-                audio_in = websocket.speek.get()
-                websocket.speek.task_done()
-                if len(audio_in) > 0:
-                    rec_result = inference_pipeline_asr(audio_in=audio_in)
-                    if inference_pipeline_punc is not None and 'text' in rec_result:
-                        rec_result = inference_pipeline_punc(text_in=rec_result['text'], param_dict=websocket.param_dict_punc)
-                    # print(rec_result)
-                    if "text" in rec_result:
-                        websocket.send_msg.put(rec_result["text"]) # 存入发送队列  直接调用send发送不了
-               
-            time.sleep(0.1)
-
-def vad(data, websocket):  # VAD推理
-    global inference_pipeline_vad
-    #print(type(data))
-    # print(param_dict_vad)
-    segments_result = inference_pipeline_vad(audio_in=data, param_dict=websocket.param_dict_vad)
-    # print(segments_result)
-    # print(param_dict_vad)
-    speech_start = False
-    speech_end = False
-    
-    if len(segments_result) == 0 or len(segments_result["text"]) > 1:
-        return speech_start, speech_end
-    if segments_result["text"][0][0] != -1:
-        speech_start = True
-    if segments_result["text"][0][1] != -1:
-        speech_end = True
-    return speech_start, speech_end
-
- 
-start_server = websockets.serve(ws_serve, args.host, args.port, subprotocols=["binary"], ping_interval=None)
-asyncio.get_event_loop().run_until_complete(start_server)
-asyncio.get_event_loop().run_forever()
\ No newline at end of file
diff --git a/funasr/runtime/python/websocket/README.md b/funasr/runtime/python/websocket/README.md
index 73f8aebc3..723782f74 100644
--- a/funasr/runtime/python/websocket/README.md
+++ b/funasr/runtime/python/websocket/README.md
@@ -5,7 +5,7 @@ The audio data is in streaming, the asr inference process is in offline.
 
 ## For the Server
 
-Install the modelscope and funasr
+### Install the modelscope and funasr
 
 ```shell
 pip install -U modelscope funasr
@@ -14,18 +14,34 @@ pip install -U modelscope funasr
 git clone https://github.com/alibaba/FunASR.git && cd FunASR
 ```
 
-Install the requirements for server
+### Install the requirements for server
 
 ```shell
 cd funasr/runtime/python/websocket
 pip install -r requirements_server.txt
 ```
 
-Start server
+### Start server
+#### ASR offline server
 
+[//]: # (```shell)
+
+[//]: # (python ws_server_online.py --host "0.0.0.0" --port 10095 --asr_model "damo/speech_paraformer-large_asr_nat-zh-cn-16k-common-vocab8404-pytorch")
+
+[//]: # (```)
+#### ASR streaming server
 ```shell
-python ASR_server.py --host "0.0.0.0" --port 10095 --asr_model "damo/speech_paraformer-large_asr_nat-zh-cn-16k-common-vocab8404-pytorch"
+python ws_server_online.py --host "0.0.0.0" --port 10095
 ```
+#### 
+
+#### ASR offline/online 2pass server
+
+[//]: # (```shell)
+
+[//]: # (python ws_server_online.py --host "0.0.0.0" --port 10095 --asr_model "damo/speech_paraformer-large_asr_nat-zh-cn-16k-common-vocab8404-pytorch")
+
+[//]: # (```)
 
 ## For the client
 
@@ -39,8 +55,10 @@ pip install -r requirements_client.txt
 Start client
 
 ```shell
-python ASR_client.py --host "127.0.0.1" --port 10095 --chunk_size 300
+# --chunk_size, "5,10,5"=600ms, "8,8,4"=480ms
+python ws_client.py --host "127.0.0.1" --port 10096 --chunk_size "5,10,5"
 ```
 
 ## Acknowledge
-1. We acknowledge [cgisky1980](https://github.com/cgisky1980/FunASR) for contributing the websocket service.
+1. This project is maintained by [FunASR community](https://github.com/alibaba-damo-academy/FunASR).
+2. We acknowledge [cgisky1980](https://github.com/cgisky1980/FunASR) for contributing the websocket service.
diff --git a/funasr/runtime/python/websocket/parse_args.py b/funasr/runtime/python/websocket/parse_args.py
new file mode 100644
index 000000000..2528a7624
--- /dev/null
+++ b/funasr/runtime/python/websocket/parse_args.py
@@ -0,0 +1,35 @@
+# -*- encoding: utf-8 -*-
+import argparse
+parser = argparse.ArgumentParser()
+parser.add_argument("--host",
+                    type=str,
+                    default="0.0.0.0",
+                    required=False,
+                    help="host ip, localhost, 0.0.0.0")
+parser.add_argument("--port",
+                    type=int,
+                    default=10095,
+                    required=False,
+                    help="grpc server port")
+parser.add_argument("--asr_model",
+                    type=str,
+                    default="damo/speech_paraformer-large_asr_nat-zh-cn-16k-common-vocab8404-pytorch",
+                    help="model from modelscope")
+parser.add_argument("--asr_model_online",
+                    type=str,
+                    default="damo/speech_paraformer-large_asr_nat-zh-cn-16k-common-vocab8404-online",
+                    help="model from modelscope")
+parser.add_argument("--vad_model",
+                    type=str,
+                    default="damo/speech_fsmn_vad_zh-cn-16k-common-pytorch",
+                    help="model from modelscope")
+parser.add_argument("--punc_model",
+                    type=str,
+                    default="damo/punc_ct-transformer_zh-cn-common-vad_realtime-vocab272727",
+                    help="model from modelscope")
+parser.add_argument("--ngpu",
+                    type=int,
+                    default=1,
+                    help="0 for cpu, 1 for gpu")
+
+args = parser.parse_args()
\ No newline at end of file
diff --git a/funasr/runtime/python/websocket/ws_client.py b/funasr/runtime/python/websocket/ws_client.py
new file mode 100644
index 000000000..8bbf1032d
--- /dev/null
+++ b/funasr/runtime/python/websocket/ws_client.py
@@ -0,0 +1,182 @@
+# -*- encoding: utf-8 -*-
+import os
+import time
+import websockets
+import asyncio
+# import threading
+import argparse
+import json
+
+parser = argparse.ArgumentParser()
+parser.add_argument("--host",
+                    type=str,
+                    default="localhost",
+                    required=False,
+                    help="host ip, localhost, 0.0.0.0")
+parser.add_argument("--port",
+                    type=int,
+                    default=10095,
+                    required=False,
+                    help="grpc server port")
+parser.add_argument("--chunk_size",
+                    type=str,
+                    default="5, 10, 5",
+                    help="chunk")
+parser.add_argument("--chunk_interval",
+                    type=int,
+                    default=10,
+                    help="chunk")
+parser.add_argument("--audio_in",
+                    type=str,
+                    default=None,
+                    help="audio_in")
+
+args = parser.parse_args()
+args.chunk_size = [int(x) for x in args.chunk_size.split(",")]
+
+# voices = asyncio.Queue()
+from queue import Queue
+voices = Queue()
+
+# 其他函数可以通过调用send(data)来发送数据，例如：
+async def record_microphone():
+    is_finished = False
+    import pyaudio
+    #print("2")
+    global voices 
+    FORMAT = pyaudio.paInt16
+    CHANNELS = 1
+    RATE = 16000
+    chunk_size = 60*args.chunk_size[1]/args.chunk_interval
+    CHUNK = int(RATE / 1000 * chunk_size)
+
+    p = pyaudio.PyAudio()
+
+    stream = p.open(format=FORMAT,
+                    channels=CHANNELS,
+                    rate=RATE,
+                    input=True,
+                    frames_per_buffer=CHUNK)
+    is_speaking = True
+    while True:
+
+        data = stream.read(CHUNK)
+        data = data.decode('ISO-8859-1')
+        message = json.dumps({"chunk_size": args.chunk_size, "chunk_interval": args.chunk_interval, "audio": data, "is_speaking": is_speaking, "is_finished": is_finished})
+        
+        voices.put(message)
+        #print(voices.qsize())
+
+        await asyncio.sleep(0.005)
+
+# 其他函数可以通过调用send(data)来发送数据，例如：
+async def record_from_scp():
+    import wave
+    global voices
+    is_finished = False
+    if args.audio_in.endswith(".scp"):
+        f_scp = open(args.audio_in)
+        wavs = f_scp.readlines()
+    else:
+        wavs = [args.audio_in]
+    for wav in wavs:
+        wav_splits = wav.strip().split()
+        wav_path = wav_splits[1] if len(wav_splits) > 1 else wav_splits[0]
+        # bytes_f = open(wav_path, "rb")
+        # bytes_data = bytes_f.read()
+        with wave.open(wav_path, "rb") as wav_file:
+            # 获取音频参数
+            params = wav_file.getparams()
+            # 获取头信息的长度
+            # header_length = wav_file.getheaders()[0][1]
+            # 读取音频帧数据，跳过头信息
+            # wav_file.setpos(header_length)
+            frames = wav_file.readframes(wav_file.getnframes())
+
+        # 将音频帧数据转换为字节类型的数据
+        audio_bytes = bytes(frames)
+        # stride = int(args.chunk_size/1000*16000*2)
+        stride = int(60*args.chunk_size[1]/args.chunk_interval/1000*16000*2)
+        chunk_num = (len(audio_bytes)-1)//stride + 1
+        # print(stride)
+        is_speaking = True
+        for i in range(chunk_num):
+            if i == chunk_num-1:
+                is_speaking = False
+            beg = i*stride
+            data = audio_bytes[beg:beg+stride]
+            data = data.decode('ISO-8859-1')
+            message = json.dumps({"chunk_size": args.chunk_size, "chunk_interval": args.chunk_interval, "is_speaking": is_speaking, "audio": data, "is_finished": is_finished})
+            voices.put(message)
+            # print("data_chunk: ", len(data_chunk))
+            # print(voices.qsize())
+        
+            await asyncio.sleep(60*args.chunk_size[1]/args.chunk_interval/1000)
+
+    is_finished = True
+    message = json.dumps({"is_finished": is_finished})
+    voices.put(message)
+
+async def ws_send():
+    global voices
+    global websocket
+    print("started to sending data!")
+    while True:
+        while not voices.empty():
+            data = voices.get()
+            voices.task_done()
+            try:
+                await websocket.send(data) # 通过ws对象发送数据
+            except Exception as e:
+                print('Exception occurred:', e)
+            await asyncio.sleep(0.005)
+        await asyncio.sleep(0.005)
+
+
+
+async def message():
+    global websocket
+    text_print = ""
+    while True:
+        try:
+            meg = await websocket.recv()
+            meg = json.loads(meg)
+            # print(meg, end = '')
+            # print("\r")
+            text = meg["text"][0]
+            text_print += text
+            text_print = text_print[-55:]
+            os.system('clear')
+            print("\r"+text_print)
+        except Exception as e:
+            print("Exception:", e)
+
+
+async def print_messge():
+    global websocket
+    while True:
+        try:
+            meg = await websocket.recv()
+            meg = json.loads(meg)
+            print(meg)
+        except Exception as e:
+            print("Exception:", e)
+
+
+async def ws_client():
+    global websocket # 定义一个全局变量ws，用于保存websocket连接对象
+    # uri = "ws://11.167.134.197:8899"
+    uri = "ws://{}:{}".format(args.host, args.port)
+    #ws = await websockets.connect(uri, subprotocols=["binary"]) # 创建一个长连接
+    async for websocket in websockets.connect(uri, subprotocols=["binary"], ping_interval=None):
+        if args.audio_in is not None:
+            task = asyncio.create_task(record_from_scp()) # 创建一个后台任务录音
+        else:
+            task = asyncio.create_task(record_microphone())  # 创建一个后台任务录音
+        task2 = asyncio.create_task(ws_send()) # 创建一个后台任务发送
+        task3 = asyncio.create_task(message()) # 创建一个后台接收消息的任务
+        await asyncio.gather(task, task2, task3)
+
+
+asyncio.get_event_loop().run_until_complete(ws_client()) # 启动协程
+asyncio.get_event_loop().run_forever()
diff --git a/funasr/runtime/python/websocket/ws_server_online.py b/funasr/runtime/python/websocket/ws_server_online.py
new file mode 100644
index 000000000..7ef0e2125
--- /dev/null
+++ b/funasr/runtime/python/websocket/ws_server_online.py
@@ -0,0 +1,108 @@
+import asyncio
+import json
+import websockets
+import time
+from queue import Queue
+import threading
+import logging
+import tracemalloc
+import numpy as np
+
+from parse_args import args
+from modelscope.pipelines import pipeline
+from modelscope.utils.constant import Tasks
+from modelscope.utils.logger import get_logger
+from funasr_onnx.utils.frontend import load_bytes
+
+tracemalloc.start()
+
+logger = get_logger(log_level=logging.CRITICAL)
+logger.setLevel(logging.CRITICAL)
+
+
+websocket_users = set()
+
+
+print("model loading")
+
+inference_pipeline_asr_online = pipeline(
+    task=Tasks.auto_speech_recognition,
+    model=args.asr_model_online,
+    model_revision='v1.0.4')
+
+print("model loaded")
+
+
+
+async def ws_serve(websocket, path):
+    frames_online = []
+    global websocket_users
+    websocket.send_msg = Queue()
+    websocket_users.add(websocket)
+    websocket.param_dict_asr_online = {"cache": dict()}
+    websocket.speek_online = Queue()
+    ss_online = threading.Thread(target=asr_online, args=(websocket,))
+    ss_online.start()
+
+    try:
+        async for message in websocket:
+            message = json.loads(message)
+            is_finished = message["is_finished"]
+            if not is_finished:
+                audio = bytes(message['audio'], 'ISO-8859-1')
+
+                is_speaking = message["is_speaking"]
+                websocket.param_dict_asr_online["is_final"] = not is_speaking
+
+                websocket.param_dict_asr_online["chunk_size"] = message["chunk_size"]
+                
+    
+                frames_online.append(audio)
+    
+                if len(frames_online) % message["chunk_interval"] == 0 or not is_speaking:
+                    
+                    audio_in = b"".join(frames_online)
+                    websocket.speek_online.put(audio_in)
+                    frames_online = []
+
+            if not websocket.send_msg.empty():
+                await websocket.send(websocket.send_msg.get())
+                websocket.send_msg.task_done()
+
+     
+    except websockets.ConnectionClosed:
+        print("ConnectionClosed...", websocket_users)    # 链接断开
+        websocket_users.remove(websocket)
+    except websockets.InvalidState:
+        print("InvalidState...")    # 无效状态
+    except Exception as e:
+        print("Exception:", e)
+ 
+
+
+def asr_online(websocket):  # ASR推理
+    global websocket_users
+    while websocket in websocket_users:
+        if not websocket.speek_online.empty():
+            audio_in = websocket.speek_online.get()
+            websocket.speek_online.task_done()
+            if len(audio_in) > 0:
+                # print(len(audio_in))
+                audio_in = load_bytes(audio_in)
+                rec_result = inference_pipeline_asr_online(audio_in=audio_in,
+                                                           param_dict=websocket.param_dict_asr_online)
+                if websocket.param_dict_asr_online["is_final"]:
+                    websocket.param_dict_asr_online["cache"] = dict()
+                
+                if "text" in rec_result:
+                    if rec_result["text"] != "sil" and rec_result["text"] != "waiting_for_more_voice":
+                        print(rec_result["text"])
+                        message = json.dumps({"mode": "online", "text": rec_result["text"]})
+                        websocket.send_msg.put(message)
+        
+        time.sleep(0.005)
+
+
+start_server = websockets.serve(ws_serve, args.host, args.port, subprotocols=["binary"], ping_interval=None)
+asyncio.get_event_loop().run_until_complete(start_server)
+asyncio.get_event_loop().run_forever()
\ No newline at end of file