[torchaudio] Fix torchaudio interface error (#2352)

tools/compute_cmvn_stats.py

@@ -12,8 +12,6 @@
 import torchaudio.compliance.kaldi as kaldi
 from torch.utils.data import Dataset, DataLoader
 
-torchaudio.set_audio_backend("sox_io")
-
 
 class CollateFunc(object):
     ''' Collate function for AudioDataset
@@ -32,15 +30,15 @@ def __call__(self, batch):
             value = item[1].strip().split(",")
             assert len(value) == 3 or len(value) == 1
             wav_path = value[0]
-            sample_rate = torchaudio.backend.sox_io_backend.info(
+            sample_rate = torchaudio.info(
                 wav_path).sample_rate
             resample_rate = sample_rate
             # len(value) == 3 means segmented wav.scp,
             # len(value) == 1 means original wav.scp
             if len(value) == 3:
                 start_frame = int(float(value[1]) * sample_rate)
                 end_frame = int(float(value[2]) * sample_rate)
-                waveform, sample_rate = torchaudio.backend.sox_io_backend.load(
+                waveform, sample_rate = torchaudio.load(
                     filepath=wav_path,
                     num_frames=end_frame - start_frame,
                     frame_offset=start_frame)

tools/compute_fbank_feats.py

@@ -20,10 +20,6 @@
 
 import wenet.dataset.kaldi_io as kaldi_io
 
-# The "sox" backends are deprecated and will be removed in 0.9.0 release.
-# So here we use sox_io backend
-torchaudio.set_audio_backend("sox_io")
-
 
 def parse_opts():
     parser = argparse.ArgumentParser(description='training your network')
@@ -104,14 +100,14 @@ def load_wav_segments(wav_scp_file, segments_file):
         for item in audio_list:
             if len(item) == 2:
                 key, wav_path = item
-                waveform, sample_rate = torchaudio.load_wav(wav_path)
+                waveform, sample_rate = torchaudio.load(wav_path)
             else:
                 assert len(item) == 4
                 key, wav_path, start, end = item
                 sample_rate = torchaudio.info(wav_path).sample_rate
                 frame_offset = int(start * sample_rate)
                 num_frames = int((end - start) * sample_rate)
-                waveform, sample_rate = torchaudio.load_wav(
+                waveform, sample_rate = torchaudio.load(
                     wav_path, frame_offset, num_frames)
 
             mat = kaldi.fbank(waveform,

tools/wav2dur.py

@@ -5,7 +5,6 @@
 
 import torchaudio
 
-torchaudio.set_audio_backend("sox_io")
 
 scp = sys.argv[1]
 dur_scp = sys.argv[2]