#!/bin/sh# @(#)cepdemo	1.3 10/10/97 ERL - cepstral analysis demo     ESPS_VERBOSE=0;export ESPS_VERBOSE     spfile=`get_esps_base`/demo/speech.sd     sf=`hditem -i record_freq $spfile`     #     echo " "     echo "CEPDEMO: Plot 1024 points from speech file (shown in upper left)"     plotsd -r1000:2023  -W"=550x350+0+0" $spfile &     sleep 5     #     fft -r1000:2023 -o10 -l1024 -wHAMMING $spfile - |\     plotspec -W"=350x350+0-0" -&     echo  " "     echo "CEPDEMO: Compute fft on points shown and plot spectrum (shown in lower left)"     #     fftcep -r1000:2023 -o10  -l1024  -wHAMMING  -F  -R  -z23:1000 \	$spfile speech.cep      echo " "     echo "CEPDEMO: Compute the cepstrum and zero out the high order terms -"     echo "CEPDEMO: this removes the periodic excitation from the data"     echo " "     echo 'CEPDEMO: fftcep -r1000:2023 -o10  -l1024  -wHAMMING  -F  -R\'     echo "         -z23:1000 speech.sd speech.cep "     echo " "     make_sd -r1: -fcepstrum_0 -S$sf speech.cep speech.cepsd     echo " "     fft -p1:1024 -o10 -l1024 speech.cepsd - | plotspec -W"=350x350-0+0" -&     echo "CEPDEMO: Plot the frequency response of the"     echo "CEPDEMO: liftered cepstral sequence (shown in upper right)"     #     sleep 5     echo " "     echo "CEPDEMO: Compare autoregressive spectral estimator with"     echo "CEPDEMO: liftered cepstral estimator (shown in lower right)"     refcof -l1024 -r1000:2023 -o15 $spfile - | \     me_spec - - | plotspec -W"=350x350-0-0" - &     echo " "     rm -f speech.cep speech.cepsd