ref: c561f2900068530633992798e667ef3131a2420c
dir: /test/wtest.pl/
#!/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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 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 $env="400:800:400"; # attack, duration, drop my ($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) { $effect="@ARGV"; } # output a nice header explaining the data print("# Testing gsm compress/decompress "); if ($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 0.00 to 0.99 percent of Nyquist\n"); print("# produced by $ding -f0.xx -v0.5 -e$p:$env:$p d/i0.xx.$t\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 mkdir("d",0775); my $f; my %q; my $nyq = 1.0; for ($f=0.00; $f<1.001; $f+=0.01) { my @mod; #if ($f>0.995) { $f=0.999; } my $s=sprintf("%4.2f",$f); #print "$ding -f$s -v0.5 -e$p:$env:$p -d1.0 d/i$s.$t\n"; qx{$ding -f$s -v0.5 -e$p:$env:$p -d1.0 d/i$s.$t &>/dev/null}; if ($fmt eq '-t') { qx{$toast -l d/i$s.$t}; qx{$toast -dl d/i$s.$t.gsm}; }else{ qx{cp d/i$s.$t d/a$s.$t 2>/dev/null}; qx{$sox -r$rate d/i$s.$t -g d/g$s.wav $effect 2>/dev/null}; unlink "d/i$s.$t"; qx{$sox d/g$s.wav d/i$s.$t 2>/dev/null}; qx{cp d/i$s.$t d/b$s.$t 2>/dev/null}; unlink "d/g$s.wav"; } @mod = grep {/v2max/} qx{$model -f$s -e$env $rate d/i$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 "d/i$s.$t"; } print("#freq dB-gain dB-error\n"); exit 0;