This is a development which includes an analog and a digital part. Basically power is to represent the audio signal separated in frequency, for this we need to sample the signal in compliance with the sampling theorem Nyquist sampling theorem, Shannon . An audio signal "audible" to the ...By: candelo
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Source: http://www.instructables.com/id/Audio-Spectrum-Analyzer-with-Freescale-GT60-LCD-8B/
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