Audio Precision Blog


FFT Spectrum and Spectral Densities – Same Data, Different Scaling

Joe Begin | September 12, 2019

Fast Fourier Transform (FFT) analysis, which converts signals from the time domain to their frequency domain equivalent, is incredibly useful in audio test. Precise estimates of many fundamental audio quality metrics such as frequency, level, harmonic distortion, intermodulation distortion, crosstalk, etc., can all be derived from FFT analysis.

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