Go Back   Home > Forums > >
Home Forums Rules Articles diyAudio Store Blogs Gallery Wiki Register Donations FAQ Calendar Search Today's Posts Mark Forums Read

Digital Source Digital Players and Recorders: CD , SACD , Tape, Memory Card, etc.

Software tool for comparing wav files
Software tool for comparing wav files
Please consider donating to help us continue to serve you.

Ads on/off / Custom Title / More PMs / More album space / Advanced printing & mass image saving
Thread Tools Search this Thread
Old 23rd February 2012, 09:40 PM   #1
percy is offline percy  United States
diyAudio Member
Join Date: Apr 2004
Location: CA
Default Software tool for comparing wav files

Is there a program out there that will compare two wav files and show me a sample by sample difference ?
Not just an all or nothing ('match' or 'no match') for the whole file, but if there are differences then it should show the specific samples that are different and their values.

Last edited by percy; 23rd February 2012 at 09:43 PM.
  Reply With Quote
Old 23rd February 2012, 10:21 PM   #2
jcx is offline jcx  United States
diyAudio Member
Join Date: Feb 2003
Location: ..
Audactiy is a open source sound editor - you can certainly add, subtract, scale, zoom .wav

Audacity: Free Audio Editor and Recorder

Audio DiffMaker may be useful too - suposedly will time align, compensate for sample rate drift, linear frequency response

Audio DiffMaker

"Audio DiffMaker is a freeware tool set intended to help determine the absolute difference between two audio recordings, while neglecting differences due to level difference, time synchronization, or simple linear frequency responses.

for only few 10s of seconds files some math software lets you import/export .wav, create any comparision equation you can code: SciLab, Octave are free MatLab workalikes

Last edited by jcx; 23rd February 2012 at 10:24 PM.
  Reply With Quote
Old 23rd February 2012, 10:34 PM   #3
SY is offline SY  United States
On Hiatus
SY's Avatar
Join Date: Oct 2002
Location: Chicagoland
Software tool for comparing wav files
Audio DiffMaker for sure. I've been an enthusiastic convert to Goldwave.
"You tell me whar a man gits his corn pone, en I'll tell you what his 'pinions is."
  Reply With Quote
Old 25th February 2012, 05:27 PM   #4
percy is offline percy  United States
diyAudio Member
Join Date: Apr 2004
Location: CA
At first Audio Diff sounded like the exact kind of thing I was looking for but it didn't work out very well. It actually tries to "normalize" both tracks first so to speak by normalizing the gain and time alignment and a couple of other things. That defeats the purpose of "numerical" comparison of samples.

I did try unchecking/disabling those adjustments but the program then just freezes up. Perhaps a bug ? I have to kill it from the task manager at that point.

The only closest thing I found was EAC (exact audio copy) which shows individual sample values that I could visually compare but how can anyone do that for 789383 samples ?

Here's what I am trying to do -
I have 2 wav files - one is a ripped cd track and the other is recorded copy of the same track play'd back on a cd player. Its recorded on the pc via spdif. Now I am trying to compare the tracks. Basic wav compare utilities indicate that they are not "identical" copies of each other hence not bit perfect. However, on visual inspection of several samples, and the fft spectrum as well, it appears that the recorded file is - for the lack of a better term - is "near bit perfect". What I mean by that is the spectrum of the recorded file is pretty much the same as the original, the values of randomly picked but still sequential samples were identical and whatever few samples I found that were not identical were differing in value by exactly 1 - meaning a sample value of 58 in the original file was 59 in the recorded file - so not by a whole lot. So I'd say this is as good as bit perfect but I want to confirm this for the whole file. Perhaps there is a pattern or it might lead to something that can explain why its not completely but only almost bit perfect.

I'd just like the program to tell me which samples are different and what are their values. Haven't found one yet so I guess I'll just have to write my own.

Last edited by percy; 25th February 2012 at 05:30 PM.
  Reply With Quote


Software tool for comparing wav filesHide this!Advertise here!
Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
software to compare wav to wav played back through speaker? freddi Multi-Way 2 28th March 2010 04:29 PM
Split 24bit .wav files Netlist PC Based 9 18th August 2009 07:39 PM
Burning WAV files to DVD -Freeware? PeteMcK Everything Else 9 20th January 2009 10:10 AM
converting WAV to MP3 files for iPod? Godzilla Digital Source 9 23rd May 2008 06:40 PM
How does a PC play WAV files? amo Digital Source 2 22nd October 2004 12:44 PM

New To Site? Need Help?

All times are GMT. The time now is 11:19 AM.

Search Engine Optimisation provided by DragonByte SEO (Pro) - vBulletin Mods & Addons Copyright © 2018 DragonByte Technologies Ltd.
Resources saved on this page: MySQL 15.79%
vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2018 DragonByte Technologies Ltd.
Copyright ©1999-2018 diyAudio