windows – 从命令行创建一个无声的mp3

>您将需要sox – “瑞士军刀”(跨平台)声音处理程序.
>这个包装Perl脚本,可以帮助你生成任何一秒钟的沉默：http://www.boutell.com/scripts/silence.html

$perl silence.pl 3 silence.wav

silence.pl是相当短的,所以我把它包括在这里,因为它是公共领域：

#!/usr/bin/perl

$seconds = $ARGV[0];
$file = $ARGV[1];
if ((!$seconds) || ($file eq "")) {
        die "Usage: silence seconds newfilename.wavn";
}

open(OUT,">/tmp/$$.dat");
print OUT "; SampleRate 8000n";
$samples = $seconds * 8000;
for ($i = 0; ($i < $samples); $i++) {
        print OUT $i / 8000,"t0n";
}
close(OUT);

# Note: I threw away some arguments,which appear in the original
# script,and which did not worked (on OS X at least)
system("sox /tmp/$$.dat -c 2 -r 44100 -e signed-integer $file");
unlink("/tmp/$$.dat");

然后只是跛脚：

$lame silence.wav silence.mp3