Sigrid Keydana

Hi Nathan, thanks for pointing this out! After the book release, there has been a major refactoring in `torchaudio`: https://github.com/mlverse/torchaudio/blob/main/NEWS.md#breaking-changes The only user-visible function is now `torchaudio_load()`.

I see. That's because `mono` is from `tuneR`, and the default (as well as recommended) backend now is `av`. You could either switch backends (using the un-exported `set_audio_backend()`), like so...

Hm, that is weird. Maybe it is just a matter of scaling. Can you find out at which point the difference in the values is introduced? Is it already present...