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AVR Audio Spectrum Monitor
Posted December 19, 2012 by Chris
“The FFT operations are done in 16-bit fixed-point. These 128 point FFT processes, applying window, butterfly operations and scalar output, could be executed in real-time (within 7.3 msec). This is pretty fast considering it is processed with only a cheap microcontroller. The spectrum bars are displayed in order of fundamental frequency x 0 (DC component), fundamental frequency x 1, x2, x3, … from left to right.”
One Response to “AVR Audio Spectrum Monitor”
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January 23rd, 2014 at 8:28 am
great