Question about Edirol R-09 Digital Voice Recorder
You need a low pass filter over the microphone, use a piece of high density, well in fact experiment with all types of densities of "Foam" and place it in front of the Mic Hole and this will work well, Sometimes wool or fur, or anything that will absorb all the low frequency signals without reducing quality will work, thats why you see those "Socks" on the microphones in the movies. Another way, is to get a VOX switch, this start recording at the sound of your voice, and although fast will usually cut off the first syllable or so, or the first few Msecs of time when it starts this can be used to advantage in this case.
Conversely, some VOX's that are built in, can cause a noise at beginning of recording.. Sometimes the noise is the Motor noise, and it's picked up as a low frequency noise, this can happen in cheaper units, an earth a bit loose, bad connections, to name a few.
Posted on Jun 01, 2010
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Posted on Jan 02, 2017
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