Avid Pro Audio Community

mlange · #1 01-09-2012, 08:28 AM

Hello all-

Just sat down to determine what component was making a 15K + whine within our DAW (similar to some really old CRTs, for us within the older community). Thought it might be a fan or a hard drive.

It's the HD Native card

We use four Digidesign 192 i/o's (blues) each maxxed with analog output cards.

It only is heard when running PT - exit PT and the whining stops.

I've visually checked the card & traces - looks great. Reseated, restarted, and tested again....... still there.

Anyone else notice this?

ejwells · #2 01-09-2012, 01:52 PM

Mine makes no sound whatsoever

danander11 · #3 01-09-2012, 02:34 PM

Mine started singing the theme music from Barney Miller once.. but I shushed it.. (though late at night I can still hear it humming along).

Seriously though. Nothing here.

mlange · #4 01-09-2012, 03:34 PM

Quote:

Originally Posted by danander11

Mine started singing the theme music from Barney Miller once.. but I shushed it.. (though late at night I can still hear it humming along).

Why stop a good thing?

Well, this is a very strange thing indeed. Digi, you have any ideas?

musicman691 · #5 01-11-2012, 12:51 PM

Quote:

Originally Posted by mlange

Hello all-

Just sat down to determine what component was making a 15K + whine within our DAW (similar to some really old CRTs, for us within the older community). Thought it might be a fan or a hard drive.

It's the HD Native card

We use four Digidesign 192 i/o's (blues) each maxxed with analog output cards.

It only is heard when running PT - exit PT and the whining stops.

I've visually checked the card & traces - looks great. Reseated, restarted, and tested again....... still there.

Anyone else notice this?

See my post in the thread you posted about this in the Mac sub-forum at: http://duc.avid.com/showthread.php?p...62#post1888662

zion · #6 03-14-2012, 07:32 PM

Nvidia Video cards do this when the 12 volt power connection is not connected. This is the first I hear of an HD/Native Card doing this.

mlange · #7 03-15-2012, 02:59 AM

FWIW, it's been a number of days & the whining effect is no longer evident. I *think* the culprit may have actually been a power supply capacitor, but without a chance to swap a whining supply it is still only a guess.

However, I will report back when more info is available.

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