Acoustic analysis of speech in pure Ruby: WAV decoding, radix-2 FFT and power spectra, generalized cosine windows, mel filterbanks and MFCC, the YIN fundamental frequency estimator, linear predictive coding by the Levinson-Durbin recursion with formant extraction from the all-pole envelope, spectral moments, Butterworth biquads, windowed-sinc decimation and short-term energy measures. No dependencies, no native extensions, deterministic output.

Required Ruby Version

>= 3.2

Authors

Den Patin

Versions

  1. 2.0.0

    1. source

      1. 2.0.0 source August 21, 2026 (25.5 KB)
  2. 1.0.0

    1. source

      1. 1.0.0 source August 01, 2026 (22 KB)

Pushed by

denpatin

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