That particular sound is quite fussy - errors in both the synthesis and in the envelope follower tend to compound on each other. Because of the random factor in the synthesis you will get a slightly different version each time. In this sample the envelope was created manually, so we're only looking ...
Loosing a USB connection can cause that.
A crashed Flash browser plug-in can cause that.
Bad sound card drivers can cause that.
Can't really narrow it down without a lot more information.
Thanks for the input Bill, I find that a clear example of why the behaviour is as it is when Sync-lock is enabled. However I'm thinking that when Sync-lock is disabled then only selected items (audio clips or data) should move. IIRC this is not what happens in earlier versions of Audacity, but I thi...
Audacity requires fast disk access to read and right large amounts of (audio) data in real time, so the only way that I could see a "network" version working would be to create a sandbox environment on the users computer into which Audacity could be temporarily "installed" and ru...
Chris's Dynamic Compressor is a third party plug-in, so officially support enquiries should be sent to Chris. However he has posted step-by-step instructions for how to download and install the plug-in: The other is an Audacity plugin, currently at version 1.2.6. To use it, download and install Auda...
Another reason for the "unnatural" sound is that in the real piano note there are specific phase relationships between the harmonics. That information is not available from the spectrum analysis, but if you try the earlier code examples you will see (hear) how important that is. In the fir...