cPreemphasis

Description

This component performs pre- and de-emphasis of speech signals using a 1st order difference equation: y(t) = x(t) - k*x(t-1) (de-emphasis: y(t) = x(t) + k*x(t-1))

Type hierarchy

cDataProcessor → cWindowProcessor → cPreemphasis

Fields

• k (numeric) [default: 0.97]

  The pre-emphasis coefficient k in y[n] = x[n] - k*x[n-1]

• f (numeric) [default: 0.0]

  The pre-emphasis frequency f in Hz : k = exp( -2*pi * f/samplingFreq. ) (if set, f will override k!)

• de (numeric) [default: 0.0]

  1 = perform de-emphasis instead of pre-emphasis (i.e. y[n] = x[n] + k*x[n-1])