GENFILT

NAME

genfilt - general purpose filtering

SYNOPSIS

genfilt (-i item) (-l lowfreq) (-h highfreq) (-n order) (-2) file

DESCRIPTION

genfilt is a program to design and apply Butterworth general purpose IIR filters to speech and lx signals. genfilt can design low-pass, high-pass, band-pass and band-stop filters.

OPTIONS

-I Identify program name and version number.

-i item Select input item number.

-l lowfreq Select frequency of low-pass band edge. Default 0.5xsampling frequency.

-h highfreq Select frequency of high-pass band edge. Default 0Hz.

-n order Select filter order. Default low-pass and high-pass: 4, band-pass and band-stop: 4, maximum 20.

-2 Filter the signal twice, first backwards and then forwards.

INPUT ITEMS

SP Any speech item

LX (optional) Any Lx item

OUTPUT ITEMS

SP Filtered speech

(null) (optional) filtered lx

HISTORY

lowfreq= low-pass band edge

highfreq= High-pass band edge

order= filter order.

FILES

<filename> <description>

VERSION/AUTHOR

1.1 Mark Huckvale

BUGS


Wed Jul 17 22:31:34 2013