PIC spectrum analyzer uses Fast Fourier Transform routine

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Simon Inns builds this realtime PIC based audio spectrum analyzer. The analyzer uses Fast Fourier Transform routine written in C to run as efficient as possible on the 8 bit PIC18F4550 mcu. The output from the FFT is displayed using a 128×64 graphical LCD to allow a real-time view of an audio signal. [via]

PIC spectrum analyzer uses Fast Fourier Transform routine – [Link]

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