I'm not sure how best to describe this bug. I'll just show you. I have a simple patch with the following parameters:

VOL VS is all the way up.

I then play one note at full velocity, then another note at 0 velocity, then repeat.

That results in the following audio:

Oh, I can't upload it. Here's an image of the waveform:

Anyway, just do what I did and you should see.

It results in a weird "click" but only when a quieter note follows a louder note. I believe it's the envelope attack "catching up" to the new velocity, but I have no proof nor can I elaborate.

Software:

• DAW: REAPER
• OS: Arch Linux
• OctaSine version: 0.9.1 (self-compiled)