Crackling Audio Through TDM Bus

[Ray Campbell]

I'm having a problem when routing audio through a bus to another track. I (intermittently) get a static-y crackling noise.

I first noticed it using Melodyne and thought that it was a problem with their RTAS Melodyne Bridge (since their website had a note about it crashing PT).

Now I'm getting it with Reason while trying to render MIDI into Audio via ReWire.

It seems to be an artifact of the audio coming in. If there's no audio, there are no crackles. When some audio passes through, there's a couple of seconds of these static noises that come through -- like pulling a sweater over your head (for those that have hair ).

It will work fine for a pass, the next pass there will be crackles. Quit Reason & PT and relaunch (or reboot) and it's fine again for a pass or two, then crackles again.

Very frustrating.

PT|HD hardware
PT 6.4
OS X.3.4 (Panther)
Reason 2.5

Ray

Update: I just had a similar experience routing audio in through the 192 I/O into an AUX input, then through a bus to an audio track, except it was *continuous* crackling. This time, merely selecting a different bus fixed the problem rather than restarting.