vqdemo

来自「speech signal process tools」· 代码 · 共 127 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# This material contains unpublished, proprietary software of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.
#
# @(#)vqdemo	3.10   8/15/91     ESI/ERL
#
# Written by:
# Checked by:
# Revised by: David Burton
#
# Brief description:  Illustrates basic VQ processing
#

USE_ESPS_COMMON=off
export USE_ESPS_COMMON
ESPS_VERBOSE=3
export ESPS_VERBOSE

if test `mach_type` = CONVEX
 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
# Make empty parameter file to turn off Warnings
rm -f params; touch params
echo " "
echo "				Example of VQ encoding"
echo " "
sleep 4
echo "VQDEMO: This demo uses ESPS_VERBOSE=3 to illustrate parameter file processing."
echo " "
#make VQ codebook from Gaussian noise
echo "VQDEMO: Make Gaussian training sequence, and"
echo "VQDEMO: process noise into 40 sets of 10th-order reflection coefficients."
echo "VQDEMO: This codebook represents white Gaussian noise."
echo "VQDEMO: (refcof parameters determined by parameter file refparams):"
echo "VQDEMO:   %testsd -Tgauss - | refcof -Prefparams - rc.fana"
echo " "
testsd -Tgauss - | refcof -Prefparams - rc.fana
echo " "
sleep 3
echo "VQDEMO: Design codebook with these parameters:"
echo "VQDEMO:   %cat vqparams"
cat vqparams
echo " "
sleep 3
echo "VQDEMO: designing codebook rc.cbk -- history in vqdeshist"
echo "VQDEMO:   %vqdes -Pvqparams -x2 rc.fana rc.cbk"
vqdes -Pvqparams -x2 rc.fana rc.cbk
echo " "
echo "VQDEMO: Codebook designed."
echo " "
sleep 3
echo "VQDEMO: now quantize the training sequence"
echo "VQDEMO:   %vq  rc.cbk rc.fana rc.vq"
vq  rc.cbk rc.fana rc.vq
echo " "
echo 'VQDEMO: That was an example of VQ codebook design (by using vqdes) and'
echo 'VQDEMO: VQ encoding or quantization (by using vq).'
echo " "
rm -f input.dst class.cbk
ESPS_VERBOSE=0
export ESPS_VERBOSE
echo " "
echo " 				Example of VQ classification"
echo " "
sleep 4
echo "VQDEMO: Let's build a VQ classifier to separate speech from noise."
echo 'VQDEMO: First, analyze speech (using refcof) and then make'
echo 'VQDEMO: a VQ codebook (using vqdes) to represent it.'
echo "VQDEMO: Use the same parameters as above to build the new VQ codebook."
echo " "
echo "VQDEMO:   %refcof -Prefparams speech.sd  speech.ana"
echo "VQDEMO:   %vqdes  -Pvqparams speech.ana speech.cbk"
refcof -Prefparams speech.sd speech.ana
vqdes -Pvqparams speech.ana speech.cbk
echo " "
sleep 3
echo "VQDEMO: Make a VQ classification codebook called class.cbk. This contains"
echo 'VQDEMO: 1 codebook record representing  Gaussian noise (from rc.cbk) and'
echo 'VQDEMO: 1 codebook record representing speech (from speech.cbk).'
echo " "
echo "VQDEMO:  %addclass -r5 -s NOISE -n channel_1 -f spec_rep \ "
echo "VQDEMO:   -p RC rc.cbk class.cbk"
echo " "
addclass -r5 -s NOISE -n channel_1 -f spec_rep -p RC rc.cbk class.cbk
echo " "
echo "VQDEMO:  %addclass -r5 -s SPEECH -n channel_1 -f spec_rep \ "
echo "VQDEMO:  -p RC speech.cbk class.cbk"
echo " "
addclass -r5 -s SPEECH -n channel_1 -f spec_rep -p RC speech.cbk class.cbk
echo " "
echo "VQDEMO: class.cbk now has a VQ codebook representing each type of source:"
echo "VQDEMO: speech data and nosie data."
echo " "
sleep 3
echo 'VQDEMO: Now use vqdst to compare an unknown input (generated with testsd)'
echo "VQDEMO: with each source representation in class.cbk. Write the"
echo "VQDEMO: results to the file input.dst"
echo " "
echo "VQDEMO:  %testsd -Tuniform  - | refcof -Prefparams - - |\ "
echo "VQDEMO:  vqdst -f spec_param - class.cbk input.dst"
testsd -Tuniform  - | refcof -Prefparams - - | vqdst -f spec_param - class.cbk input.dst 
echo " "
sleep 3
echo "VQDEMO: Classify unknown input by using vqclassify."
echo "VQDEMO: Source with the most votes is classification decision."
echo " "
echo "VQDEMO:   %vqclassify -v input.dst"
echo " "
echo " "
vqclassify -v input.dst