Dominique, you wrote,
>I recently noticed the addition of clicks in recordings transferred from
>Portadisc to PC through the USB port. The clicks are clearly audible,
>they appear in the sonogram as vertical bands, and they seem to
>correspond to a few milliseconds of data loss. They appear randomly but,
>sometimes, up to 10 of them within 10 of 15 seconds. Transferring the
>same track several times, I eventually could transfer most tracks
>without clicks. But that is not really practical !
First, I'd listen to one of the troublesome tracks with headphones on
the machine that recorded it. If there are no clicks evident then,
it's a transfer problem.
Clicks in transfer are commonly the symptom of the computer's sample
rate not being synchronized to the digital signal source. I don't
know how it is in your software, but in my Pro Tools, there's a place
where you select internal or external synch. It needs to be on
external when making a digital transfer.
Be sure to change it back to internal when the transfers are done! If
not the workstation software may play back at an odd speed.
-Dan Dugan
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