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Audio corpora prep should allow for WAV files and mix multichannels #13

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tshastry opened this issue Oct 15, 2018 · 0 comments
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Audio corpora prep should allow for WAV files and mix multichannels #13

tshastry opened this issue Oct 15, 2018 · 0 comments
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The current audio corpora prep seems to only work on SPH files. In addition, the current description says this:

 Note that filenames with hyphens will be sanitized to underscores and that audio files will be forced to single channel, 16 kHz, signed PCM format. If two channels are present, only the first will be used.

Many corpora come in WAV files instead of SPH files, and many also have two unmixed channels that need to be mixed to properly account for all audio.
@mgoldey mgoldey mentioned this issue Oct 15, 2018
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mgoldey added a commit that referenced this issue Oct 17, 2018
@mgoldey
generalize audio corpus prep (#15)
0869ca4 
This PR enables audio corpus objects to accept SPH, WAV, and MP3 files from directories. It still expects file names to match between audio files and transcript STM files.

Further, this PR mixes stereo channels down to mono instead of discarding extra channels.

Fixes #13
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