cVectorPreemphasis

Description

This component performs per frame pre-emphasis without an inter-frame state memory. (This is the way HTK does pre-emphasis). Pre-emphasis: y(t) = x(t) - k*x(t-1) ; de-emphasis : y(t) = x(t) + k*x(t-1)

Type hierarchy

cDataProcessor → cVectorProcessor → cVectorPreemphasis

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. ) (this option will override k)

• de (numeric) [default: 0.0]

  1 = perform de- instead of pre-emphasis