Audio spectrum analyzer: psychoacoustics, FFT tricks and visualizing hidden frequencies
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Audio spectrum analyzer: psychoacoustics, FFT tricks and visualizing hidden frequencies
Most real‑time audio spectrum analyzers use fast Fourier transform, which inherently trades frequency precision for time resolution Human ears perceive roughly logarithmic frequency spacing, so analyzers often warp linear FFT bins into log‑scaled displays Window functions like Hann or Blackman dramatically change how narrow peaks and close ...
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