[LAU] Crackling in ZynAddSubFX

[Patrice Brousseau]

I know I'm a little late... but...

I recompiled zynaddsubfx (cvs patched) and it now works fine with freebob...

Yes!

Peter Lutz wrote:
> I'm very new to Linux audio recording, so I apologize in advance if 
> I'm missing something obvious.
>
> I have a brand new computer with an M-Audio Delta 44 audio card 
> running the latest version of Ubuntu Studio 8.04. I've been 
> experimenting with software synthesizers using a USB MIDI keyboard, 
> and I've managed to get QSynth working very well and have had some 
> success recording that. I thought I'd try ZynAddSubFX since it sounds 
> amazing. The problem I'm having is that the sound crackles (that's the 
> best word I can think of to describe it) when I play it. The very odd 
> thing I've discovered though is that if I record ZynAddSubFX in 
> Ardour, I don't hear any crackling during playback of the recording. 
> It's only as I'm listening to ZynAdd in real-time as I play it. I've 
> tried using different speakers and headphones, but it makes no difference.
>
> I suppose I could just record it and try to ignore the crackling as I 
> play, but it would obviously be ideal to have no crackling at all.
>
> I've tried tweaking both the ZynAdd settings and JACK settings 
> (although my guess is that JACK settings are fine, since I haven't had 
> any issues with recording live instruments or recording QSynth) but to 
> no avail. I have the sample rate in ZynAdd matching the one in JACK 
> (48000Hz) and have tried different buffer sizes in ZynAdd but haven't 
> noticed a difference. I've also noticed that it usually doesn't 
> crackle when I'm using the default instrument in ZynAdd, only once I 
> switch to a different one -- then it seems pretty continuous no matter 
> which instrument I switch to after that.
>
> Does anyone have any ideas as to what could be causing this?
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