Clicks at the very beginning of sessions> Playback and Recording

[Alécio Costa]

Clicks at the very beginning of PT sessions

Hi folks!
Sometimes I get clicks in the very beginning of sessions. Even when quick punch is not enabled and when I am just playing back the session from time ZERO.

Yes, no problems with clock neither HD fragmentataion.

Based on this issue, please take a look the following quote I have just extracted from EQ forum, basically a thread bashing PT but with this amazing info from IZ President. Nika, are you there?

Sorry if this has already been posted on here. ( probably MM, T...)

Here it goes: [img]images/icons/tongue.gif[/img]

Summary/Conclusion:
1) You must use Auto-Fade to avoid pops and clicks in your audio.
2) Auto-fade crossfade soundfiles are NOT written to the disk and are therefore NOT part of the audio.
3) If you lose your auto-fade values you will get pops and clicks.
4) The maximum auto-fade crossfade length is limited to 10 ms so if you want long crossfades on edits or punches your going to have to do them manually.
5) If you have alot of edits in a small region the DSP will have to do all of the crossfades of several audio files to one track in real time during playback. If there are multiple tracks it may mean that for short periods of time(during the crossfades) you have way more files being played/faded than the system can handle and you will get DSP error messages in addition to pops and clicks

Just to confirm, I also had Bill Heath go down to OmniSound today in Nashville and try this out on their ProTools system. Protools does indeed generate pops and clicks when Auto-fade is off and when it is on there are no crossfade sound files in the audio folder - only fade files in the Session so transferrring these files to another manufacturer's system would yeild pops and clicks unless you do a bounce.

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Barry, iZ President
www.izcorp.com


__________________
Eng. Alécio Costa
Producer/Singer/Musician