Prevent audio speeding up when trimming

[hannahblair]

Description

This PR changes the way we convert the audio buffer we get from the audio component to WAV format. The function should now interleave the audio samples correctly so the audio data matches what the audio component expects for stereo or multi-channel WAV files.

This also fixes the background of the trim region which got lost at some point (if the option isn't provided as a param)

Note, I think this should close #6336 but I can't be sure as I can't repro it

Tested with:

• .ogg
• .mp3
• .wav
• .mp4
• .webp

Closes: #7592

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Install Gradio from this PR

pip install https://gradio-builds.s3.amazonaws.com/52578b38edbb1973ba830f59a9e2ca7b81dc7b49/gradio-4.19.2-py3-none-any.whl

Install Gradio Python Client from this PR

pip install "gradio-client @ git+https://github.com/gradio-app/gradio@52578b38edbb1973ba830f59a9e2ca7b81dc7b49#subdirectory=client/python"

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🦄 change detected

This Pull Request includes changes to the following packages.

Package	Version
@gradio/audio	patch
gradio	patch

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Prevent audio speeding up when trimming

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[hannahblair]

@hysts I haven't been able to repro the volume getting ticket in your issue #6336 - would you mind giving this PR a test and seeing if it persists for the files you were noticing this on?

[abidlabs]

LGTM @hannahblair nice fix!

[hysts]

@hysts I haven't been able to repro the volume getting ticket in your issue #6336 - would you mind giving this PR a test and seeing if it persists for the files you were noticing this on?

@hannahblair Yes, it seems to be fixed by this PR! Thanks!
(FYI, in my environment, #6336 reproduces even with gradio==4.19.2, so I wonder why you couldn't reproduce it. Maybe it depends on audio files? I used these audio files for testing this time. Anyway, I guess it doesn't matter as it's now fixed.)