OPL Channel Muting Bug

[1IoMoth]

Mentioned this on the discord but every time I mute most or all of the channels on the OPL, OPL2 and OPL3 I can very faintly hear the music

[Weeppiko]

I'm unable to reproduce it, I even tried to record it using audacity and then boosting up the volume but it is completely silent

[tildearrow]

Maybe send the song which triggers reproduction of this issue? Could be a particular effect causing it.

[freq-mod]

Generally, OPL line still output some audible signal even when TL is at minimum, so maybe it's got something to it...

[1IoMoth]

For me, if you mute every single channel (including drums), and hit play, I can still hear the song but very very quietly. Even in Audacity I can still hear it

[Weeppiko]

I tried to reproduce it again just to make sure, what I discovered is: this doesn't happens on OPL3, on both OPL and OPL2 the drum channels are audible on Furnace but the other channels were only audible by boosting the volume on Audacity

[tildearrow]

Hmmmm... it appears this issue is caused by the lack of output connection registers on OPL1/2...

[freq-mod]

simplescreenrecorder-2022-05-04_13.23.20.mp4

drum mode volumes are completely borked, might be relevant to the described bug

[tildearrow]

Issue fixed. This required a core modification.