That works but is is a bit of hassle to use - I should have put it in as a feature request instead of bug, as it works as expected.
I would love an option for the yellow/pitch bar to have a minimum value of 0 that produces no sound, instead of the current minimum value that produces a sound. Basically, coming from pico8 sound editor and trying to recreate some sounds from my old projects takes forever - instead of few clicks, I need to set the pitch bar by bar (because bleeper autofills the bars in between) then adjust the volume to make the quiet pauses.
In a perfect world, I would love a mode for Beeper to behave like pico sound editor - only create a bar where you click (the in between bars stay quiet), default volume is 0 and changes only on the bars you click (currently the below example in Beeper would be filled with bars of sound in between):
...but this is not a high priority thing, worse comes to worst I can make and export from pico8.