AJA Video Systems Forum
high pitch audio buzz
high pitch audio buzz
by Frank Cann on Jan 12, 2011 at 2:28:37 pm

Just recently I started experiencing a high pitch audio hum/buzz (for lack of a better word) during analog acquire (Media 100). After several tests I found that it's not coming from any deck (either that or its coming from every machine - highly unlikely) and it only goes away when I disconnect the AJA breakout cable (duh). In fact, it even goes away if I only disconnect the green (y) video connection - but then I don't get anything - it must be an "all or nothing" situation. Could it be the breakout cable?

Re: high pitch audio buzz
by Jeremy Garchow on Jan 13, 2011 at 3:03:55 am

Sounds like a ground problem. What is on the other end ? A patch bay of some sort?

Re: high pitch audio buzz
by Bob Zelin on Jan 15, 2011 at 6:15:09 pm

Hi Frank -
I have seen AJA cards cause interference with the internal MAC Audio. So how are you monitoring your audio - are you listening to the output of your Kona card (which should be perfect), or are you monitoring the output of your MAC computer ? Exactly, what are your speakers listening to?

Bob Zelin

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