How to detect and prevent hiss on recordings

When monitoring audio, the use of both headphones and V.U. (volume unit) meters at each component of the audio chain will help ensure a quality audio program. During a deposition, listening through headphones is the best way to monitor audio quality and detect noises, buzzes and interference. V.U. meters give you an accurate visual indication of the level of your audio signal. They also help to detect excessive level and loss of signal.

Unity Gain is a method of calibrating the audio signal as it passes through multiple audio processing components. The audio level indicators on the mic mixer, the VCR and audio cassette recorder should all read the same decibel (dB) level when passing a signal through the audio chain. This helps minimize the problems associated with low audio level (tape hiss, inaudible) and overmodulation (distortion).

http://clvs.ncraonline.org/article005.htm by Wayne V. Martin


D_Sample I suggested I do a little research on this unity gain, I thought I would share my findings

1) Put the fader of the mixer to 0db, and then turn the gain up for each channel. Stop when you get to the point where there is any hiss.
2) Don't use cheap cables.. if they say 'HOSA' throw dem shytz away!
3) Make sure all your equipment is properly grounded.
4) Check the gain on all your equipment so your not trying to lower the volume (on your mixer) of a signal that's already too loud.

dyrtrax