VOC26
NAME
voc26 - SRUBANK style 26-channel vocoder
SYNOPSIS
voc26
(-i item) (-f) (-q nlevel) file
DESCRIPTION
voc26
is a straightforward implementation of a 26-channel filterbank analyser
using two second-order section Butterworth bandpass filters spaced as in
Holmes paper in IEE proceedings with
SRU extensions at the low and high frequencies.
Energy smoothing done at 50Hz to give default 100Hz framerate.
There is no
limit to the length of the input signal.
Options
and their meanings are:
-I
Identify program and version number.
-i item
Select input item.
-f
Faster frame rate. Sample output at 200 frames/sec, filtering remains at
50Hz to avoid pitch pulses.
-q nlevels
Quantise the output energies to 'nlevels'. The top 50dB of the signal is quantised.
INPUT ITEMS
SP
Any speech signal sampled at greater than 20kHz.
OUTPUT ITEMS
CO
Vocoder energies.
VERSION/AUTHOR
2.0 - Mark Huckvale
SEE ALSO
voc8(1), voc19(1)
Fri Jul 09 14:54:37 2004