#!/usr/bin/perl -w# wtest.pl -- program to help generate response/error graphs for adpcm/gsm code.## Copyright (C) 1999 Stanley J. Brooks <stabro@megsinet.net> ## This program is free software; you can redistribute it and/or modify# it under the terms of the GNU General Public License as published by# the Free Software Foundation; either version 2 of the License, or# (at your option) any later version.## This program is distributed in the hope that it will be useful,# but WITHOUT ANY WARRANTY; without even the implied warranty of# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the# GNU General Public License for more details.## You should have received a copy of the GNU General Public License# along with this program; if not, write to the Free Software# Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USAuse strict;$|=1;# set default valuesmy $toast='/usr/bin/toast';my $sox='../sox';my $fmt='';my $rate=8000; # sample ratesmy $p=200; # silence before/after tonepulsemy $attack=400;my $duration=800;my ($ding,$model,$t,$rms,$lim)=("./ding","./model","sw",11585.2, 0.5);my $effect=''; # you may want to try a filter# parse commandline argumentswhile ($_ = shift @ARGV) { if (m{^-[tgai]$}) { $fmt=$_; } else { unshift @ARGV,$_; last; }}if ($#ARGV >= 0) { $effect="@ARGV";}my $env="$attack:$duration:$attack"; # attack, duration, drop# output a nice header explaining the data print("# Testing gsm compress/decompress ");if ($fmt eq '-t') { print("by $toast\n");}else{ print("by $sox -r$rate in.sw $fmt out.wav $effect\n");}print("# with tone pulses from 0.01 to 0.99 percent of Nyquist\n");print("# col 1 is frequency/Nyquist\n");print("# col 2 is (power) dB gain\n");print("# col 3 is (power) dB level of error signal\n");print("#\n#freq dB-gain dB-error\n");# generate the test datamy $f;my %q;my $nyq = 1.0; my $l=$attack + $duration + $attack;for ($f=0.01; $f<0.999; $f+=0.01) { my @mod; my $s=sprintf("%4.2f",$f); qx{$sox -2r2 -n i$s.$t synth ${l}s sin $s vol .5 fade h ${attack}s ${l}s ${attack}s pad ${p}s ${p}s}; if ($fmt eq '-t') { qx{$toast -l i$s.$t}; qx{$toast -dl i$s.$t.gsm}; }else{ qx{cp i$s.$t a$s.$t 2>/dev/null}; qx{$sox -r$rate i$s.$t -g g$s.wav $effect 2>/dev/null}; unlink "i$s.$t"; qx{$sox g$s.wav i$s.$t 2>/dev/null}; qx{cp i$s.$t b$s.$t 2>/dev/null}; unlink "g$s.wav"; } @mod = grep {/v2max/} qx{$model -f$s -e$env $rate i$s.$t 2>&1}; print STDERR "$s: ",@mod; $_=shift(@mod); if (m{s2max *([0-9.]+), *v2max *([0-9.]+), *rmserr *(-?[0-9.]+)}) { #print("$s $1\n"); #print("$s $1 $3\n"); my $v = ($1 > $lim)? $1 : $lim; my $r = ($3 > $lim)? $3 : $lim; my $dbv = 20*log($v/$rms)/log(10); my $dbr = 20*log($r/$rms)/log(10); printf("%s %.3f %.3f\n",$s,$dbv,$dbr); } unlink "i$s.$t";}print("#freq dB-gain dB-error\n");exit 0;
#!/usr/bin/perl -w
# wtest.pl -- program to help generate response/error graphs for adpcm/gsm code.
#
# Copyright (C) 1999 Stanley J. Brooks <stabro@megsinet.net>
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
use strict;
$|=1;
# set default values
my $toast='/usr/bin/toast';
my $sox='../sox';
my $fmt='';
my $rate=8000; # sample rates
my $p=200; # silence before/after tonepulse
my $attack=400;
my $duration=800;
my ($ding,$model,$t,$rms,$lim)=("./ding","./model","sw",11585.2, 0.5);
my $effect=''; # you may want to try a filter
# parse commandline arguments
while ($_ = shift @ARGV) {
if (m{^-[tgai]$}) {
$fmt=$_;
} else {
unshift @ARGV,$_;
last;
}
}
if ($#ARGV >= 0) {
$effect="@ARGV";
}
my $env="$attack:$duration:$attack"; # attack, duration, drop
# output a nice header explaining the data
print("# Testing gsm compress/decompress ");
if ($fmt eq '-t') {
print("by $toast\n");
}else{
print("by $sox -r$rate in.sw $fmt out.wav $effect\n");
}
print("# with tone pulses from 0.01 to 0.99 percent of Nyquist\n");
print("# col 1 is frequency/Nyquist\n");
print("# col 2 is (power) dB gain\n");
print("# col 3 is (power) dB level of error signal\n");
print("#\n#freq dB-gain dB-error\n");
# generate the test data
my $f;
my %q;
my $nyq = 1.0;
my $l=$attack + $duration + $attack;
for ($f=0.01; $f<0.999; $f+=0.01) {
my @mod;
my $s=sprintf("%4.2f",$f);
qx{$sox -2r2 -n i$s.$t synth ${l}s sin $s vol .5 fade h ${attack}s ${l}s ${attack}s pad ${p}s ${p}s};
if ($fmt eq '-t') {
qx{$toast -l i$s.$t};
qx{$toast -dl i$s.$t.gsm};
}else{
qx{cp i$s.$t a$s.$t 2>/dev/null};
qx{$sox -r$rate i$s.$t -g g$s.wav $effect 2>/dev/null};
unlink "i$s.$t";
qx{$sox g$s.wav i$s.$t 2>/dev/null};
qx{cp i$s.$t b$s.$t 2>/dev/null};
unlink "g$s.wav";
}
@mod = grep {/v2max/} qx{$model -f$s -e$env $rate i$s.$t 2>&1};
print STDERR "$s: ",@mod;
$_=shift(@mod);
if (m{s2max *([0-9.]+), *v2max *([0-9.]+), *rmserr *(-?[0-9.]+)}) {
#print("$s $1\n");
#print("$s $1 $3\n");
my $v = ($1 > $lim)? $1 : $lim;
my $r = ($3 > $lim)? $3 : $lim;
my $dbv = 20*log($v/$rms)/log(10);
my $dbr = 20*log($r/$rms)/log(10);
printf("%s %.3f %.3f\n",$s,$dbv,$dbr);
}
unlink "i$s.$t";
}
print("#freq dB-gain dB-error\n");
exit 0;