Sound issues

[ZARk-be]

Hello

I love your emulator (love the post-processing effects ! )

But i keep getting jitters in the sound.
At first i thought it was because i was running a PAL rom, but even with an NTSC rom i get strange jitters.
I tryed with another machine and same issue. Is this due to newer JS engine in Chrome ?

edit:
The only warning i get in the console is :
"The AudioContext was not allowed to start. It must be resumed (or created) after a user gesture on the page. https://goo.gl/7K7WLu" webAudioRenderer.js:70

edit2:
Okay, updated some code to only start webnes after a button press, warning is gone. but the jittered audio remains

edit3:
I notice the FPS indicator sometimes dips a bit sometimes. could be the reason for jittered audio ?

edit4:
I remember a while back, Chrome updating things because of "Spectre" vulnerability, and adding random jitter to callbacks

[peteward44]

Yes the audio is FPS-dependent, so if your frame rate isn't consistent it will cause the audio to jitter. I wasn't able to recreate this issue on my PC but i'll keep the issue open to see if anyone else has this problem too

[ZARk-be]

all machines i test with windows10+chrome have the issue.
testing with different NTSC and PAL roms.
what system do you test this on ?

[ZARk-be]

the only js nes emulator i've found that doesn't have FPS/sound jitters is this one :
https://github.com/bfirsh/jsnes-web/blob/master/src/FrameTimer.js