HQTX
NAME
HQtx - high performance conversion of Lx to Tx
SYNOPSIS
HQtx
(-i item) (-n) file
DESCRIPTION
HQtx
is a program to obtain excitation periods from a laryngograph signal. It
exploits the characteristic shape of the lx waveform during voiced
excitation. It utilises two derived functions: the sample-by-sample
differential, and the instantaneous gradient. Tx points are extracted
from these functions using an automatic threshold determination procedure.
HQtx
automatically inverts the lx waveform if it is determined to be upside-down.
This can be cancelled by the "-n" flag.
Options
and their meanings are:
-I
Identify program and exit.
-n
Do not automatically correct for waveform inversion.
-i item
Select input item number.
INPUT ITEMS
2.xx
Any excitation item.
OUTPUT ITEMS
3
High performance tx.
VERSION/AUTHOR
2.2 - Mark Huckvale.
SEE ALSO
tx, txgen
BUGS
Loads whole waveform into memory.
Fri Jul 09 14:54:43 2004