spectrodemo

来自「speech signal process tools」· 代码 · 共 47 行

#! /bin/sh
# @(#)spectrodemo	1.3 6/12/91 ESI
#
#
USE_ESPS_COMMON=off
export USE_ESPS_COMMON
ESPS_VERBOSE=0
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
echo This demo shows how to use filter, fft, and image to display a
echo speech spectrogram.  
echo This must be run on a Masscomp or Sun graphics display
if test `mach_type` = SUN3 -o `mach_type` = SUN4
 then
  echo Remove the plot by moving the mouse to the title bar, clicking
  echo the right button, and selecting QUIT.
fi
echo Hit return to continue
read a
echo " "
echo "Converting ASCII file to ESPS SD file"
echo "   %atosps speech.asc speech.sd"
atosps speech.asc speech.sd
echo " "
echo "Processing speech.sd..."
echo " "
echo '   %filter -p1:8000 -Ppreemp_params speech.sd - \
    | fft -o6 -l32 -S10 -p1:2000000000 - - \
    | image -t"Time (seconds)" -V"Freq. (Hz)" -s: -Afs2 -B0 -G-20:0 -  '

filter -p1:8000 -Ppreemp_params speech.sd - \
    | fft -o6 -l32 -S10 -p1:2000000000 - - \
    | image -t"Time (seconds)" -V"Freq. (Hz)" -s: -Afs2 -B0 -G-20:0 - 

echo " "
echo 'On a multiplane color display, try changing "-Afs2" to "-A16od2"'
echo 'or "-A16od3".'