-
audio hiss in DVX-100
I recently shot an interview with a lectrosonics wireless mic plugged into my DVX 100, set to “mic ” level input.
I am getting an approx 1 cycle per second pulsating high frequency hiss through my headset and it is on the recorded tape. The hiss is not audible when the camera is not in “record mode”- ie when the tap is not rolling.
Does the camera have an auto level filter or pad of some sort that is kicking in and out to make this hiss…? anyone else experience this problem?Note: I love my DVX 100 and have used it on many broadcast shoots and documentaries..this is teh first baffling problem, and I am not ruling out my old wireless mic as the culprit….
-
3 Replies
-
I have a wireless mic (different brand) that generates an incredible amount of hiss. I would look there first. The DVX has a documented “problem” of a noisy headphone circuit that doesn’t go to tape but in your case, as you describe it, that wouldn’t seem to apply.
-
thanks.
I suspect that the old mic is the problem and will report back when I discover what is going on. -
I discovered that the pulsating hiss is coming from my Firestore FS-4 portable Hard Drive. I noticed that the audible pulse frequency matched that of the LED status light on the FS4, which pulses at about 1 cycle per second. I conclude that it is best to keep your wireless receiver far from your FS 4, which is interfereing with the radio mic.
Other observations:
It is an old VHF mic. I dont know if the same problem would arise with UHF mics.
This phenomenon did not happen for several months. I have two FS-4s of different ages and the interference happens to both in a controlled setting. I can only conclude that I was lucky in the past, or that something in my wireless mic has changed.. time to retire it. perhaps. I welcome suggestions. Does COW have an FS 4 thread?
I find the FS 4 to be a great time saver- eliminates digitizing footage! This design is a bit clunky and my guess is that the bib boys- sony canon panasonic- will put some resources behind their versions and the FS4 will become like yesterday’s walkman.
Reply to this Discussion! Login or Sign Up