Description: The SparkFun Sound Detector is a
small and very easy to use audio sensing board with three different
outputs. The Sound Detector not only provides an audio output, but also a
binary indication of the presence of sound, and an analog
representation of its amplitude. The 3 outputs are simultaneous and
independent, so you can use as many or as few as you want at once.
The envelope output allows you to easily read amplitude of sound by
simply measuring the analog voltage. Gain can be adjusted with a
through-hole resistor, to change the threshold of the binary (gate)
output pin as well. Check the hookup guide below for more information
about setting gain.
Each of the three output signals is present on the .1" header at the
edge of the board. They are active simultaneously. If you aren’t using
one in your particular application, simply leave that pin disconnected.
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