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Home: Video University Forums: Marketing & Business:
Video Hum

X-Hicks
Imported Account

Jan 9, 2004, 11:38 AM

Post #1 of 2 (710 views)
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Video Hum	Can't Post

Hello, I record all of my local school board meetings. We have a real bad hum in all our videos. I have tried taking the electrical ground out of several things we have to plug, none of them seem to work. Any idea what is causing this or how I can eliminate it.

X-Guy_Hall
Imported Account

Jan 11, 2004, 3:34 PM

Post #2 of 2 (709 views)
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Re: Video Hum	Can't Post

If you're taking an audio feed from the audio system built in to
the room and running that into your video equipment, it could be
a ground loop.
Several things to try -
- Plug all power into the same circuit
- Lift the ground on ALL your equipment where it plugs into power
- Use a direct box with a lift on it between the source audio and you
It might also be an impedance mismatch that the direct box or
another adapter might help with.
Guy
: Hello, I record all of my local school board meetings. We have a real bad hum in all our videos. I have tried taking the electrical ground out of several things we have to plug, none of them seem to work. Any idea what is causing this or how I can eliminate it.