specdemo

来自「speech signal process tools」· 代码 · 共 65 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# This material contains unpublished, proprietary software of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.
#
# @(#)specdemo	3.10   6/12/91     ESI/ERL
#
# Written by:
# Checked by:
# Revised by: David Burton
#
# Brief description:  Illustrates maximum entropy spectum analysis
#


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 "make 1 second of Gaussian noise"
echo "   %testsd -r20000 -Tgauss gauss.sd"
testsd -r20000 -Tgauss gauss.sd

echo "make 1 second of a sine wave at frequency 600 Hz and one at 1100 Hz"
echo "   %testsd -Tsine -f600 -r20000 sine1.sd"
testsd -Tsine -f600 -r20000 sine1.sd
echo "   %testsd -Tsine -f1100 -r20000 sine2.sd"
testsd -Tsine -f1100 -r20000 sine2.sd

echo "add the two sine waves"
echo "   %addsd sine1.sd sine2.sd sines.sd"
addsd sine1.sd sine2.sd sines.sd

echo "add the Gaussian noise to the two sines"
echo "   %addsd gauss.sd sines.sd signal.sd"
addsd gauss.sd sines.sd signal.sd

echo "compute reflection coefficients to 100th order"
echo "   %refcof -o100 -p1:2500 -l0 signal.sd signal.rc"
refcof -o100 -p1:2500 -l0 signal.sd signal.rc

echo "compute spectrum"
echo "   %me_spec signal.rc signal.spec"
me_spec signal.rc signal.spec