LPCDECOMP

NAME

lpcdecomp - decomposes a speech signal into a filter plus residual

SYNOPSIS

lpcdecomp (-i item) (-n ncoeffs) (-p|-r) file

DESCRIPTION

lpcdecomp performs a fixed frame LPC analysis on sections of a speech waveform to generate an LP filter and a residual waveform. Optionally, the residual is then decomposed further into a pulse-only signal and a noise-only signal. The matching program lpcrecomp puts the bits back together again. With no manipulation of the analysed components, recomposition is close to lossless.

Options and their meanings are:

-I Identify program and version number.

-i item Select input item number.

-n ncoeff Specify number of predictor coefficients to use. Default is (2+2*sample_rate/1000).

-p Decompose the residual into two parts, one containing pulses and one noise.

-r Randomise phase of noise residual signal.

INPUT ITEMS

1.xx Any speech waveform

OUTPUT ITEMS

PC Filter coefficients.

LX Pulses

LX Noise

VERSION/AUTHOR

1.0 - Mark Huckvale

Wed Jul 17 22:31:36 2013