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Repetitive noise during capture in FCP with AJA IOHD
Hello all,
I’m hoping someone has run into this problem and has been able to troubleshoot it because my company has had no luck.
We’re getting an inconsistent but repetitive problem during Audio Only capture through our AJA IO boxes. As the audio is recording, there’s a beep (like the sound of lower pitched tone) usually only a few frames in duration, but enough to completely ruin the capture.
I’ve noticed that it’s coming across all 8 recording channels despite only one channel of audio being used. We’ve checked our hardware and that seems okay.
I actually even got this noise when there wasn’t any audio connected to the computer, I just had the capture window up.
Granted I know that FCP isn’t the best way to capture audio, but it’s the method that we use for ease of use.
Suggestions?
Ryan
Mac Dual Xeon Quad Core 3ghz
4GB Ram
NVIDIA GeForce 8800GT
AJA ioHD -
4 Replies
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Also, for anyone curious here’s our audio setup:
Mic to Preamp to Mixer to AJA ioHD to the Apple
Thanks!
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Could it be GSM radio? (cell phone, nextel, etc…)
You don’t need to be using it for the problem to occur. If the phone gets an update or acquires/changes cell towers this will cause the blips as well. Typically, the phone needs to be fairly close (within 10 ft.).To test, I would capture audio and then turn off your phone and then back on again. The turn on sequence should generate some noise, and you can see if it is the same sound you have experienced in the past.
Tech-T Productions
http://www.technical-t.com -
That’s definitely worth a test, we usually do have our cells in our pockets…
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Just a guess, and probably wrong, but perhaps this is happening across the places where the disk drives are fragmented, or the file system is having to write to a new block. I wonder if you’d still hear the problem if you recorded to a clean formatted drive?
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