Audio Quality After Conversion

[ChristopherHolm]

Why does the quality of audio severely change when uploaded to canvas?

I'm trying to build basic audio waveform quizzes. I export 16-bit/44.1khz wav files, or 320kps MP3 files. Both are clean, and sound great when the files are loaded into the "files" section of a canvas course. 

 When I link them to an audio player within a quiz question, the audio degrades so far that the audio is unusable. 

It seems to be the conversion to MP4 that is causing it. Is there any way to make canvas support native playback of mp3/wav files? and if not, why? The file conversion is actually making the file larger, yet sounding worse. 

 Here's an example of the garbled nature of the audio. 

 

[chriscas]

Hi @ChristopherHolm,

I'd honestly suggest contacting Canvas support about this issue.  I recall seeing some posts in the past month or so about video content getting downsized/compressed as well, and I thought someone reported that support was investigating and the resizing was not intended.  I'd guess that may apply to audio too, but the more reports Canvas support gets about the issue the better for them to track down the problem and prioritize a fix.

Hope this helps a bit even if it's not an exact answer!

-Chris