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Strange flutter noise on mic channel

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Wes Browning
Strange flutter noise on mic channel
on Sep 9, 2008 at 1:36:54 am

I'm using a wireless lavaliere (sennheiser evolution g2) on my Sony EX1. When I plug it in via the standard 1/8" mini to unbalanced XLR male connector I get a strange fluttering noise. Oddly, it makes the noise whether I have it plugged in or not, or when I have it off. So I'm guessing the problem is just the cable. I tried it with two different cables, of the same specs (different brands) and I get the same result.

You can here the noise it makes here. The cable I'm using is the one found here.



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Ty Ford
Re: Strange flutter noise on mic channel
on Sep 9, 2008 at 2:51:28 am

Hello Wes and welcome to the Cow Audio Forum.

You have an unbalanced XLR connector on your camera?

At what point are you monitoring to hear the fluter? Where are your headphones plugged in?

Regards,

Ty Ford




Want better production audio?: Ty Ford's Audio Bootcamp Field Guide






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Wes Browning
Re: Strange flutter noise on mic channel
on Sep 9, 2008 at 2:53:47 am

I hear the noise during monitoring and after recording. The link from the original post was the noise I had during the recording.


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Ty Ford
Re: Strange flutter noise on mic channel
on Sep 9, 2008 at 3:04:09 am

Let's try this again.

You hear the noise whether the cable is plugged in or not. That means it's not the cables.
What's plugged into the camera inputs?
What are the headphones plugged into?

Ty Ford

Skype me: tyford



Want better production audio?: Ty Ford's Audio Bootcamp Field Guide






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Wes Browning
Re: Strange flutter noise on mic channel
on Sep 9, 2008 at 3:17:14 am

Sorry, I should clarify. I hear the noise when the cable is plugged in only-- and I've tried two different ones of the same configuration, both in good shape. I'm monitoring it via the headphone jack on the camera. The noise is there, whether or not the other XLR channel is occupied.



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Wes Browning
Re: Strange flutter noise on mic channel
on Sep 11, 2008 at 12:59:28 am

I just rewired the XLR plug to be balanced rather than unbalanced, and the noise went away. Clear as a bell now.

My understanding of balanced vs unbalanced is relatively rudimentary at best. Why use one over the other?


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Ty Ford
Re: Strange flutter noise on mic channel
on Sep 11, 2008 at 9:30:36 pm

Wes,

Congratulations! You have just answered your own question. Balanced circuits are less noisy.

Regads,

Ty Ford


Want better production audio?: Ty Ford's Audio Bootcamp Field Guide






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