NOISANAL
NAME
noisanal - estimate quantity of aperiodicity in signal
SYNOPSIS
noisanal
(-i item) (-w windowsize) (-e) (-n) file
DESCRIPTION
noisanal
estimates the degree of aperiodicity in a signal as a function of time.
It uses a type of autocorrelation measure to estimate what proportion of the
signal is predictable at each time instant. The output is a track item
normalised to overall energy. The measure is probably irrelevant in silent intervals.
Options
and their meanings are:
-I
Identify program and exit.
-i item
Select input item number and type.
-w windowsize
Set the analysis window size. Default 30ms.
-e
Output energy track as well as aperiodicity track.
-n
Normalise energy track to 0..1
INPUT ITEMS
1.xx
Speech waveform.
OUTPUT ITEMS
16
Periodicity estimate by autocorrelation.
16
Overall energy track (decibels).
VERSION/AUTHOR
1.0 - Mark Huckvale.
SEE ALSO
fxac(SFS1)
Fri Jul 09 14:54:43 2004