voc26 - SRUBANK style 26-channel vocoder
(-i item) (-f) (-q nlevel) file
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.
and their meanings are:
Identify program and version number.
Select input item.
Faster frame rate. Sample output at 200 frames/sec, filtering remains at
50Hz to avoid pitch pulses.
Quantise the output energies to 'nlevels'. The top 50dB of the signal is quantised.
Any speech signal sampled at greater than 20kHz.
2.0 - Mark Huckvale
Fri Jul 09 14:54:37 2004