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Topic: Microphone sensor problems low gain??? (Read 526 times) previous topic - next topic


hey anyone having issues with microphone sensors that they don't get sound from distance and only when u tap it with fingers


Jul 21, 2019, 04:30 pm Last Edit: Jul 21, 2019, 04:32 pm by Grumpy_Mike
Yes they all work like that.
More gain means they can make sense of the weaker sounds.


Some microphone boards a gain control pot or you can change the gain resistors or build your own preamp.   

Or, you can buy an audio mixer (they all have gain/level controls) and a microphone.   Of course you'll have to bias the output.   And, you'll need a regular stage/studio microphone.   "Computer microphones" don't work with mixers or PA systems, etc.

I have one of these and I agree.   The sensitivity is a little low.    For example, I have to crank-up the TV louder than I normally listen to get a "good signal".    But there is some logic in that...    It doesn't have variable gain so it can be overloaded (and clip/distort) and lower gain gives more headroom.   Also, higher gain means more noise pickup/amplification (both electrical and acoustical)

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