AudioStreamPlayer high-freq artifact, pops, stereo channel corruption

[Error7Studios]

Godot version:
3.2.2 Stable

OS/device including version:
Windows 10

Issue description:

• High-frequency artifact in both WAV and OGG sample playback. (Related: #23544)
• Pops/thumps in both WAV and OGG sample playback
• One stereo channel is messed up on playback of mono OGG sample

Video example:
https://youtu.be/PQQmKecHrec

Steps to reproduce:
(See video example)
In the provided project, drop the samples onto the AudioStreamPlayer, and run the project.
Listen to the output sound.

Minimal reproduction project:
AudioStreamPlayerBug.zip

[Calinou]

Related to #22016?

[ellenhp]

I was partially able to reproduce this issue in 4.0 but I dug in a bit more and found something interesting. I plotted the OGG and WAV files with matplotlib and it doesn't look like they're the same.

First, the ogg, then the wav.

edit: the ogg was mangled by ffmpeg which is why it looks different. Ignore this.

That could explain the awful playback issues in the mono ogg file. I wasn't able to reproduce the high pitched sound you referred to though. I may try some more tomorrow but it's getting late. Might be bedtime :)

[Error7Studios]

I wasn't able to reproduce the high pitched sound you referred to though.

Good to hear! So I guess something in 4.0 fixed that issue. Thanks for taking a look at it!
As long as WAV and MP3 are working well, then the issue with OGG isn't so critical.

[ellenhp]

Nevermind! There was indeed a bug in the mono->stereo conversion of the ogg stream. I have a fix. I also found a fix for some ringing in the ogg/mp3 streams that might be what you noticed, but my hearing isn't great so I don't want to say for sure.

[akien-mga]

Is this still reproducible in 4.0 RC 3 or later?