Question Audiosource single pop/crack sound while mixer is set to -80

Heya,

So on awake my game loads it's audio volume settings that I had set a previous time. If I had saved it to a low value or even muted (-80), whenever I start the game and the audiosource starts to play the audio (which is set to low or muted via de mixer), a loud pop is heard. As if the mixer turned the volume down a frame too late.

At first I thought that that was the case: The source had 'play on awake' on it, and the settings were being loaded on awake. But even after setting the source to play on a delay of 1s from a start function, after that delay the pop still plays. And in the inspector I can clearly see the mixer settings are set to -80 way before the source starts playing the sound.

EDIT: I'm on unity 2020.3.25f1

I looked around but couldn't find an answer to this. Any help would be greatly appreciated. Cheers!

 

Is the starting volume of the mixer 0db? If so try setting it to a slightly different value other than 0. For example -0.5db.

It’s an odd fix but I’ve had the issue you’re having before and changing the starting volume so that it’s not 0 has worked for me in the past.

 

Yeah the default of the mixer channel is 0db. And once settings load it's set to -80. I tried setting another default value (-1) but the same issue persisted.

However I've found a workaround that seems to work for this particular case:
I was using audiosource.play after a delay. This still gave the pop.
Now I tried doing audiosource.playDelayed with a tiny delay and now all of a sudden theres no pop.

This works fine for what I need because it concerns playing a music track. But doubt this is a good solution for when you need to play things that are more precisely timed.

 

Yep audiosource.playDelayed works for me as well