MicRecord Demo was wrong when change settings.

[CsloudX]

Which demo project is affected:

MicRecord

OS/device including version:

Windows11 64bit

Issue description:

When I change settings in ui, then record or play , it look not right.

for me, i want record audio with some special settings. like format and mix rate.

Screenshots of issue:

[Calinou]

cc @goatchurchprime

I'm not sure if we properly support recording formats other than 16-bit PCM (uncompressed). It might be possible to get the stereo toggle working, but that's about it.

In any case, there's not a lot of use cases for recording in 8-bit anyway (you'll want to use a lossy codec like Opus for VoIP).

[goatchurchprime]

I am working on an alternative of this demo at:
https://github.com/goatchurchprime/godot-demo-projects/tree/gtch/micplotfeed/audio/mic_input
to make use of godotengine/godot#108773

Since it doesn't use AudioEffectRecord with its AudioStreamWAV get_recording() method it implements the WAV output in pure GDScript.