[LAU] Bristol B3 and stuck notes

Damon Chaplin damon at karuna.eclipse.co.uk
Fri May 22 05:40:10 EDT 2009


On Thu, 2009-05-21 at 23:42 +0200, Nick Copeland wrote:
> Hi All,
> 
> I am dealing with an issue with Bristol where the B3 emulator uniquely
> exhibits stuck notes. None of the other emulators seem to show this
> problem and all debuging to date indicates that this is not an
> external issue such as lost MIDI messages, etc. The B3 has a lump of
> code that emulates all 92 tonewheel whenever a key is pressed, it
> chews up a nice amount of CPU and this may be related to note event
> management sequences that might be buggy.
> 
> Now the guy who reported the issue sees it regularly, he just needs to
> play a sequence of notes quickly and eventually one will stick on
> until pressed again. For the life of me I cannot reproduce this on my
> dev system, after hours and hours of playing.
> 
> The bristol B3 is perhaps not the most popular example of hammond
> emulators but has anybody seen this?

Yep, I just tried version 0.40.2 and it happened almost immediately. It
happens pretty regularly to me.

I can help debug it if you like. (I've recently tracked down several
bugs like this in my own synth.)

Damon





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