FXCEP
NAME
fxcep - Fx estimation by cepstrum algorithm
SYNOPSIS
fxcep
(-I) (-t threshold) (-i item) (-d) file
DESCRIPTION
fxcep
is a speech fundamental frequency measuring algorithm based on the cepstrum.
A 512 point FFT is performed on 40ms windows of the input speech to find the log spectrum,
and then an FFT of that provides the cepstrum . Then the Noll rules are implemented
to decide whether the input is V+ or V-, and if V+, a fundamental frequency value is determined.
Options
and their meanings are:
-I
Identify program and version number and exit.
-t threshold
Threshold for cepstral peak indicating V+ or V-.
Default set internally to 75 - value in arbitrary units
-i item
Select input item.
-d
Output autocorrelation function as DISPLAY item.
INPUT ITEMS
1.xx
Any speech item.
2.xx
Any Lx item (optional).
OUTPUT ITEMS
4.yy
Cepstrum Fx.
9
Cepstrum function display.
VERSION/AUTHOR
1.0
L.C.Whitaker
2.0
D.M.Howard
3.2
M.A.Huckvale
SEE ALSO
pp(SFS1), fxac(SFS1)
Fri Jul 09 14:54:35 2004