MSGEQ7 Simple Spectrum Analyzer

Abstract

Mixed Signal Integration has a cool little chip that has 7 built-in bandpass filters. Run an audio signal through it and you have an instant audio spectrum analyzer! This is a simple spectrum analyzer based on an Arduino. Each of the 5 LEDs represent a single section of the chip’s 7 sections of audio spectrum.

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Arduino and MSGEQ7: Simple Spec Analyzer

Putting music signal into the Analog Input of an Arduino can be pretty boring. That is, unless you use a totally awesome chip like the MSGEQ7. This  simple Spectrum Analyzer driven with an Arduino only takes a handful of parts.  I used these incredibly awesome protoboards from Adafruit for the first time.   The protoboard alone gives a fit and finish even before it starts!

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