sond pipeline

egs/mars/sd/scripts/remove_silence_from_wav.py

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+import numpy as np
+from funasr.utils.job_runner import MultiProcessRunnerV3
+from funasr.utils.misc import load_scp_as_list, load_scp_as_dict
+import os
+import librosa
+import soundfile as sf
+import argparse
+
+
+class MyRunner(MultiProcessRunnerV3):
+
+    def prepare(self, parser):
+        parser.add_argument("dir", type=str)
+        parser.add_argument("out_dir", type=str)
+        args = parser.parse_args()
+
+        meeting_scp = load_scp_as_list(os.path.join(args.dir, "meeting.scp"))
+        vad_file = open(os.path.join(args.dir, "segments"), encoding="utf-8")
+        meeting2vad = {}
+        for one_line in vad_file:
+            uid, mid, st, ed = one_line.strip().split(" ")
+            st, ed = int(float(st) * args.sr), int(float(ed) * args.sr)
+            if mid not in meeting2vad:
+                meeting2vad[mid] = []
+            meeting2vad[mid].append((uid, st, ed))
+
+        if not os.path.exists(args.out_dir):
+            os.makedirs(args.out_dir)
+
+        task_list = [(mid, wav_path, meeting2vad[mid]) for mid, wav_path in meeting_scp]
+        return task_list, None, args
+
+    def post(self, results_list, args):
+        pass
+
+
+def process(task_args):
+    _, task_list, _, args = task_args
+    for mid, wav_path, vad_list in task_list:
+        wav = librosa.load(wav_path, args.sr, True)[0] * 32767
+        seg_list = []
+        pos_map = []
+        offset = 0
+        for uid, st, ed in vad_list:
+            seg_list.append(wav[st: ed])
+            pos_map.append("{} {} {} {} {}\n".format(uid, st, ed, offset, offset+ed-st))
+            offset = offset + ed - st
+        out = np.concatenate(seg_list, axis=0)
+        save_path = os.path.join(args.out_dir, "{}.wav".format(mid))
+        sf.write(save_path, out.astype(np.int16), args.sr, "PCM_16", "LITTLE", "WAV", True)
+        map_path = os.path.join(args.out_dir, "{}.pos".format(mid))
+        with open(map_path, "wt", encoding="utf-8") as fd:
+            fd.writelines(pos_map)
+        print(mid)
+    return None
+
+
+if __name__ == '__main__':
+    my_runner = MyRunner(process)
+    my_runner.run()