tuneR (version 1.4.7)

postaud: Equal loudness compression

Description

Do loudness equalization and cube root compression

Usage

postaud(x, fmax, fbtype = c("bark", "mel", "htkmel", "fcmel"), 
    broaden = FALSE)

Value

x

Matrix of the per sample/frame (columns) spectra after applying the frequency dependant loudness equalization and compression.

eql

Vector of the equal loudness curve.

Arguments

x

Matrix of spectra (output of audspec).

fmax

Maximum frequency im Hertz.

fbtype

Auditory frequency scale.

broaden

Use two additional frequency bands for calculation.

Author

Sebastian Krey

References

Daniel P. W. Ellis https://www.ee.columbia.edu/~dpwe/resources/matlab/rastamat/, Hynek Hermansky

See Also

audspec, dolpc

Examples

  testsound <- normalize(sine(400) + sine(1000) + square(250), "16")
  pspectrum <- powspec(testsound@left, [e-mail])
  aspectrum <- audspec(pspectrum, [e-mail])
  paspectrum <- postaud(x = aspectrum$aspectrum, fmax = 5000, 
    fbtype = "mel")