48v line noise on Mic signal HEEEELP

[Ty Ford]

Using the line input and leaving 48 VDC phantom power on seldom causes noise.

Could it be from something else?

Regards,

Ty Ford

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[Joachim Sandvik]

No! the camera was set to line, and the mixer was feeding it with “dubble” 48v.(the mixer prob, screwed things a bit up. but it is sending a mic signal, (and the camera was prob. also set to feed 48v.)

Yes normally the “dubble” 48v is not a problem, but
I have done this incredible rookie mistake once before, but it was a missunderstanding between the camerawoman, and me. (i have to admit that i acctually did not plug my phones into the camera to check the audio, i just did a visual confirmation that audio was put through) I will never do that again… he he

So any takers on this, i have been suggested xplode, and xnoise plugs

[Stephen Muir]

If its a constant hum over a narrow frequency range, you may be able to notch it out with an EQ. Profile-based noise removal software (eg. DiNR) may be able to reduce the level of noise, but doing so requires a pretty light touch. Apply too-much noise removal, and you can pretty much trash your audio quality.

Of course, always monitor your recorder using headphones.

[Joachim Sandvik]

Thanks.

Any takers on the sound here.

The speach is in Norwegian, and i hope that someone might have the time to mock around with it:

The audio can be downloaded here:
https://www.yousendit.com/download/TEhXWUh0Q1JUWUEwTVE9PQ

it is called “Til Else” it should be available for another 3-4 days for download.

in advance thanks 🙂

[Frank Nolan]

That doesn’t sound like anything to do with phantom power. You only have to view the waveform in a sound program to see that it is a distorted clipped signal from over-modulation somewhere in the signal path. If your levels on the camera “looked” in range then it was probably distorting at the input to the mixer or you were sending the incorrect level output from the mixer for the chosen camera settings. You may me able to lessen that with various EQ and noise removal techniques but it will always be distorted. It’s kind of like blown out highlights with video. You can darken them a little in post but you can never really get the information back.

[Joachim Sandvik]

Ok. 😉

Well wee got the old man (93yrs old) to say some of the things one more time, and we got him to sing the pices he were supposed to sing..

soo ill VocAlign him and tune hime to fit. as far as i can, and we will cut away.

But all visual signals looked good. soo i guess the mixer screwed me over…and the fact that i did not plug my phones into the camera. (I know its like letting the camera go and the actors to preform without direction etc etc..

Thanks for all good help, and if any1 would like to try to clean it as best they can, please feel free to do soo

🙂