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Probably REALLY simple…
Tons of noise and I don’t know why!!!!
Using a brand new Lectrosonic 400 series wireless ($2,000 i think). Mic is properly placed, receiver is 20 ft away, XLR into Varicam 2700 ($40,000 camera). Batteries are fine. Using only 2 Lowell lights (Tota and Rifa). Shooting in a large room, mostly silent.
I’ve messed w/ the audio level on the receiver and on the camera, but there is always tons of noise. Not interference, just freaking hiss/hum/etc. Surely it’s not the lights right???
I can try to link to the raw audio if you want to hear it, but it’s ridiculous. I EQ it out as much as I can, but I can still easily hear it.
Oh, my output is LOW, around -20 or -30 db reading on the camera.
Any help would be GREATLY appreciated. Surely it’s a simple fix???
Cheers,
Adam
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16 Replies
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here’s a sample of what i’m talking about, let me know if you can’t download…
files.me.com/prohd/qvncoh.mov
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It is possible that there is an automatic setting on somewhere (compressor, leveler, etc….)?
Tech-T Productions
http://www.technical-t.com -
Are you feeding a LINE-level output into a MIC-level input?
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Hello Adam and welcome to the Cow Audio Forum.
Although remote operational discussions are hampered by the distance. It sounds as though you may be exiting the receiver at mic level with the camera set to receive line level.
Try getting that sorted out and see what happens.
Regards,
Ty Ford
Want better production audio?: Ty Ford’s Audio Bootcamp Field Guide
Watch Ty play guitar -
Exactly which model transmitter and receiver are you using? Lacking that information, generic advice is:
Is the audio level set properly at the transmitter?
Is the audio level set properly at the receiver?
What does the audio sound like directly monitoring out of the receiver?
Is the receiver set for mic-level or line-level output?
Is the camera expecting mic-level or line-level input?
What does the audio sound like when monitored on the camera during shooting?The audio level indicators on the camera should be a good clue that you have a dramatic level problem somewhere. But not enough information here to determine where the problem might be.
Has this ever worked in the past?
Are you using new equipment that hasn’t been set up properly? -
My 2cents
It sounds like hum, likely a grounding problem, What components are plugged in to wall outlets? Maybe move one to a different circuit or run off batteries. Or use noise removal filter in software (but it won’t sound natural).
Good Luck -
I hear some hiss but alot of hum.
Is all the gear on batts?
Have you swapped out the XLR to the cam?
Only your lights; no fluorescents or cheap wall dimmers around?
Have you moved the location of the cam and receiver to different spots in the room? There could be high voltage conduits in the floor or ceiling inducing that.Steve
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Go to the receiver and engage the 1k tone. If your inputs are set to MIC level and the receiver is not attenuated (it should be at 0db), you should hear clean tone and see good meters on the camera.
Also, if you are using the UM400a transmitter, it adds 10db more gain than the older model, which sometimes sounds like more RF hiss.
Let us know what you find.
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not sure, would that setting be on the pack? receiver? camera?
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thanks for the reply…
not sure. if you listened to my sample, you know that i’m in the local tv car commercial business, which means: no time to think, JUST SHOOT! 🙂
all our gear is basically right out of the box, turn it on, and go.
i’ll have to check on the mic level / line level, etc….
thanks again,
adam
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