Thanks Ricard for the explanation. On Mon, Feb 26, 2018 at 1:24 PM, Ricard Wanderlof <ricard.wanderlof@xxxxxxxx> wrote: > > On Mon, 26 Feb 2018, Ricard Wanderlof wrote: > >> On Fri, 23 Feb 2018, Muni Sekhar wrote: >> >> > [ Please keep me in CC as I'm not subscribed to the list] >> > >> > I?m using an alsa utilities(aplay & arecord) for sound loopback >> > testing. From Linux host , sending & receiving the wav file. >> > >> > At end I want to compare the sent & received wav file. Does Linux has >> > any utility to support this one? >> >> If the wav headers are identical, you can just use cmp or diff. Otherwise, >> you can extract the raw audio using sox, which gives you files with just >> the audio samples in them, and then you can use cmp or diff to compare >> them. It won't work though if the files aren't actually identical, for >> instance if there is an offset of a couple of samples in one compared to >> the other. >> >> If I had to compare two wav files which were offset by a small number of >> samples, I'd open them in Audacity, manually align them, then sum the >> result, write to a new file and verify that the file just contained zeros. > > (Sorry, pressed enter a bit too fast there)... > > ... align them, _invert_one_of_them_, then sum the result, write to a new > file and verify that the file just contains zeros. > > /Ricard > -- > Ricard Wolf Wanderlöf ricardw(at)axis.com > Axis Communications AB, Lund, Sweden www.axis.com > Phone +46 46 272 2016 Fax +46 46 13 61 30 -- Thanks, Sekhar _______________________________________________ Alsa-devel mailing list Alsa-devel@xxxxxxxxxxxxxxxx http://mailman.alsa-project.org/mailman/listinfo/alsa-devel
