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Audio Glich on Both Channels - at the same time???????

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Alexander Cullen
Audio Glich on Both Channels - at the same time???????
on May 28, 2010 at 3:04:06 am


I had a shoot 2 days ago using my HPX170. I ran a Senn Lav into one channel and a Rode shotgun into the other.

Prior to the shoot, I tested the room and picked a clean frequency. Once the shoot began - a presentation, there were moments of distortion coming through the lav. They would last from 1/2 a second to a second and garble the audio.

I assumed that there was interference in the air or that it had to do with the distance between the transmitter and the receiver.

Sitting down to edit the material, I have discovered that this glitch is on both channels. When the lav distorts, the shotgun looses volume (about 5 db).

I have never experienced an issue like this with my shooting set-up, which I have used regularly for over a year.

All batteries were new and the camera battery was fully charged.

Any ideas to help troubleshoot this mystery would be great.

Thanks.

Alex


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Jeremy Garchow
Re: Audio Glich on Both Channels - at the same time???????
on May 28, 2010 at 1:36:20 pm

Completely turn off the lav track, still have distorted boom?


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John Fishback
Re: Audio Glich on Both Channels - at the same time???????
on May 28, 2010 at 10:00:22 pm

It's possible something in the building emitted a strong emf pulse. It could have been a spark or a transmitter of some sort. Sennheiser has a very helpful chart of frequency use by city. In the future, you can check that list for clear freqs in your shooting location.

John

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