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sound meter

Discussion in 'Electronic Basics' started by Jason Allen Finnigan, Jan 18, 2004.

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  1. Network Blitz
    hi can some one tell me how i could build a sound level meter that can be
    hooked up to a home theater system using a led readout as well as 3 7seg led
    to give me an exact numerical readout i want it to measure dB output from
    the receiver on all 7 channels on separate displays

  2. Sound level from entertainment systems tends to fluctuate quite fast, so
    the precission of a 3 figure display is pretty much wasted. All you
    could measure would be signals averaged over several seconds, and the
    reading would be almost meaningles.

    Use an LED bar graph display instead. There are driver ICs for output in
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