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FFT Fast Fourier Transform Analyzer
Typical FFT Graph
This FFT graph shows the Sound Pressure Level across the audio fre
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quency band 20 Hz to 20 kHz, after the Fast Fourier Transform has been
applied mathematically to the microphone measurements.
FFT spectrum analysis gives early clues to any audio distortion in the
system. This distortion may occur through speakers being overloaded,
amplifiers going into clipping, mixer signals overloading, and so on.
