Loud audio "noise spike" at the end of an audio play in a python script - driving me crazy :)

[bbence84]

I am getting a quite loud audio spike / noise sound at the end of an audio play in python when using the following script:

https://gist.github.com/bbence84/04d1935a92a4b4ab3d44bf182ea4bcc1

Wav to be played, but it does it with any other wav or mp3 file: https://easyupload.io/vbat12

 

It uses the speech_recognition package and the preferredsoundplayer package, but also the VLC python package shows the same when playing the audio.

When changing the audio play to be non-blocking for the python script, the issue goes away... Very strange. 

 

This is driviging me nuts.

 

I'm on Armbian 22.11.1 Jammy / 22.04.1 LTS, kernel 5.15.80-sunxi. Orange Pi Zero LTS.

 

Thanks for any ideas!

 

Bence

 

 

[Werner]

I assume the audio chip or some sort of circuit is disabled once no longer audio is played. I don't know a fix but maybe as a workaround try playing an either very quite or high/low tone that keeps it enabled.

 

This distinctively cracking noise is known across all audio equipment where on better this issue is mitigated while on cheaper mostly ignored