lpcdemo

来自「speech signal process tools」· 代码 · 共 73 行

#! /bin/sh
# This material contains unpublished, proprietary software of
# Entropic Research Laboratory, Inc. Any reproduction, distribution,
# or publication of this work must be authorized in writing by Entropic
# Research Laboratory, Inc., and must bear the notice:
#
#    "Copyright (c) 1986-1990  Entropic Speech, Inc.
#    "Copyright (c) 1990-1991  Entropic Research Laboratory, Inc.
#                   All rights reserved"
#
# The copyright notice above does not evidence any actual or intended
# publication of this source code.
#
# @(#)lpcdemo	1.8   6/21/91     ESI/ERL
#
# Written by:
# Checked by:
# Revised by: David Burton
#
# Brief description:  Illustrates linear predictive analysis and synthesis
#

USE_ESPS_COMMON=off
export USE_ESPS_COMMON
ESPS_VERBOSE=0
export ESPS_VERBOSE
if test `mach_type` = CONVEX -o `mach_type` = SONY_RISC -o `mach_type` = SONY_68K
 then
  echo This script will fail if you do not have write permission on this directory.
 else
  if test ! -w . 
    then
	echo "You do not have write permission in this directory."
	exit 1
  fi
fi
echo " "
echo "Doing single-pulse LPC analysis"
echo "   %lpcana -Plpcparams speech.sd speech.fana"
echo " "
lpcana -Plpcparams speech.sd speech.fana
echo "Synthesizing speech from analysis data"
echo "   %lpcsynt -Psyntparams speech.fana speech.synt"
echo " "
lpcsynt -Psyntparams speech.fana speech.synt
echo " "
echo "Now design a size-16 VQ codebook from the analyzed speech,"
echo "   quantize the spectra with the resulting codebook,"
echo "   and then synthesize from the results."
echo " "
echo "   %vqdes -Pvqparams speech.fana speech.cbk"
vqdes -Pvqparams speech.fana speech.cbk
echo "   %vq speech.cbk speech.fana speech.qfana"
vq speech.cbk speech.fana speech.qfana
echo "   %lpcsynt -Psyntparams speech.qfana speech.qsynt"
lpcsynt -Psyntparams speech.qfana speech.qsynt
echo " "
echo "Now compute and display spectrograms of the speech before and after processing"
echo " "
echo "   %sgram speech.sd speech.sgram"
echo "   %plotsgram speech.sgram"
sgram -z -m wb speech.sd - | plotsgram -t "Original Speech" -W"=700x220+0+0" -&
echo " "

echo "   %sgram speech.synt speech.s.sgram"
echo "   %plotsgram speech.s.sgram"
sgram -z -m wb speech.synt - | tee speech.s.sgram | plotsgram -t "LPC Synthesized" -W"=700x220+0+300" -&
echo " "

echo "   %sgram speech.qsynt speech.qs.sgram"
echo "   %plotsgram speech.qs.sgram"
sgram -z -m wb speech.qsynt - | tee speech.qs.sgram | plotsgram -t "VQ Synthesized" -W"=700x220+0+600" -&