FILTBANK

NAME

filt - general purpose filterbank analysis

SYNOPSIS

genfilt (-i item) (-n numfilt) (-o order) (-r rate) file

DESCRIPTION

filterbank is a program to design and apply a general linear filterbank to a signal. For a filterbank of size N filtbank uses a low-pass filter at the bottom, N-2 bandpass filters and a high-pass filter at the top. Filters are linearly spaced of equal size with matching 3dB points.

OPTIONS

-I Identify program name and version number.

-i item Select input item number.

-n numfilt Select number of filters >= 2. Default 16.

-o order Select filter order. Default low-pass and high-pass: 4, band-pass and band-stop: 4. Maximum is 20.

-r rate Output frame rate required. Energies are rectified then low-pass filtered at half this rate before sampling.

INPUT ITEMS

SP Any speech item

LX (optional) Any Lx item

OUTPUT ITEMS

SP Filtered speech

(null) (optional) filtered lx

HISTORY

numfilt= number of filters

order= order of filters

rate= output frame rate

VERSION/AUTHOR

1.0 Mark Huckvale

BUGS


Sat Jun 29 11:17:56 2002