Minggu, 29 September 2013

How can I remove microphone hiss?

Q. I am trying to record my friends and I playing board games. I have bought a Sony CX380 camcorder for HD video, CAD GXL3000 condenser microphone (for picking up our voices that are about 3-5 feet away), and a Behringer Xenyx 802 mixer (to power the Microphone through Phantom power). No matter what settings I put my camcorder, microphone, and mixer to, I get a lot of hiss in the recording. Has anyone had this happen and how did you solve this problem? I know the camcorder has plug-in power (PiP) but I can't find evidence on any forums that suggest this could be a problem and there are no settings that I could find in the camcorder to turn off PiP.
Also, I want to fix the problem at the source. Using programs for 'Noise Reduction' alter the sound file slightly and cause de-synching with the video.

A. The problem is in using the microphone jack of the recorder to accept the output from the mixer. The microphone input is designed for the low level signal of a microphone - the mixer is line level. No matter how you adjust the mixer, the camcorder is going to record the noise floor of the mixer.

One work-around would be to use an attenuating patch cord between the mixer and the camcorder.

The other would be to use the external Sony stereo microphone, which is what the PIP is provided for. PIP is not the same as the 48 volt phantom power as provided at the XLR connection at the mixer.


Can I use the audio from this microphone and video from this camera?
Q. Or do I have to use the camcorder's microphone?

Camcorder:
http://www.amazon.co.uk/Sony-CX220-HD-Camcorder-Optical-Black/dp/B00AWME0P2/ref=sr_1_1?ie=UTF8&qid=1367074654&sr=8-1&keywords=camcorder

Microphone:
http://www.amazon.co.uk/Samson-CO1U-Studio-Condenser-Microphone/dp/B000PTF0E2/ref=sr_1_4?s=computers&ie=UTF8&qid=1367671413&sr=1-4&keywords=microphone+for+voice+recording
I could record the audio separately with like Audacity or something, but I really don't want to have to sync it.

A. The Sony HDR-CX220 does not have a mic input. The USB port cannot provide audio-in because the USB port is used for transferring data (video and audio) from the internal memory or flash memory card. Recording the audio separately, then synching when editing is your only option.





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