how can digital voice recording be amplified and reduce background noise?
March 1st, 2010 | 
Author: have an olympus 4100 digital voive recorder and have some background noise needs to be reduced and amplifi the voices.
The best method would be to run the audio the audio through an EQ. Human voice centers around 1000 hz. Use the controls on the EQ to raise the voices. You can isolate the back round noise by raising different frequency’s on the EQ. Once found, lower those frequency’s. HVAC noise is most likely the biggest problem. I suspect you will find that to be around 350-500 Hz. It would be best to use an EQ with level control. This will also allow you to do an overall gain of the signal.
Posted in digital recording
The best method would be to run the audio the audio through an EQ. Human voice centers around 1000 hz. Use the controls on the EQ to raise the voices. You can isolate the back round noise by raising different frequency’s on the EQ. Once found, lower those frequency’s. HVAC noise is most likely the biggest problem. I suspect you will find that to be around 350-500 Hz. It would be best to use an EQ with level control. This will also allow you to do an overall gain of the signal.
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