High Pitch Whine -- Please HELP!

  • Thread starter Thread starter kritzer
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kritzer

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I have a high pitch at 15750Hz, 10780Hz, 8020Hz, 5250Hz, 2775Hz when I record through an Rode NT1 through a Firewire 410 into my laptop. The buzz changes when I hit the record button (it becomes a lower pitch). I do not have a buzz when playing back normal music or using a regular input like a guitar. I do not think it is the microphone but I do not have access to another.

Please let me know if you can help!

Andrew
 
Sounds sort of like a CRT but with lower harmonics.

If you have a CRT anywhere in the vicinity, shut it off and see if it doesn't stop.
 
No CRT

Nope no CRT anywhere around. Thanks anymore ideas?

Noise does stutter off and on when changing the volume in the mixer panel of the firewire 410 or the software control knob. Doesn't change when using the hard drive though. CPU issue?

Also, loved your mastering will probably use again towards the end of the summer!!
 
maybe make sure every connection is clean and connected tightly? are there any fans or other electrical objects in the area, like a cordless phone or maybe a microwave nearby?

a simple restart of the computer might fix the problem, did it just start all of a sudden?
 
Isolated Issue

I have isolated the issue to it only happening with an XLR cable with 48V Phantom Power on and any input on the other end (guitar amp on or off - XLR out or Rode mic).

Anyone know why the phantom power would cause this high pitch noise? Perhaps I need a better mic cable?

Andrew
 
kritzer said:
I have isolated the issue to it only happening with an XLR cable with 48V Phantom Power on and any input on the other end (guitar amp on or off - XLR out or Rode mic).

Anyone know why the phantom power would cause this high pitch noise? Perhaps I need a better mic cable?
Click to expand...

Either the phantom power box is DC powered and its DC-DC converter is defective or... no, that's about the only thing I can think of, really. Is this a new interface? I'd contact the company and ask for a replacement.
 
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