Re: slightly OT: raw audio file format (Steve Beet )


Subject: Re: slightly OT: raw audio file format
From:    Steve Beet  <steve.beet@xxxxxxxx>
Date:    Wed, 1 Jun 2011 12:00:18 +0100
List-Archive:<http://lists.mcgill.ca/scripts/wa.exe?LIST=AUDITORY>

Raw audio data can be any format - it's probably 16-bit PCM, but could be a-law, mu-law, or any other codec. If it is PCM, the byte ordering could be either MSB or LSB first. The sample rate and data format must be known a-priori - the information is not stored in the file. You can try importing the data into a program such as audacity, and select different options until you find settings that give a reasonable-sounding signal, but the best solution is to contact the person who created the files and ask them! Good luck! Steve Beet On Wed, 1 Jun 2011 12:00:59 +0200 Massimo Grassi <massimo.grassi@xxxxxxxx> wrote: > Dear list members, > > I've been asked by a friend to work on a recording. The recording file > extension is "raw". I'm not familiar with this type of file. As far as I > understood this file-type is an uncompressed audio file with no header > information. > > Here come the questions: > 1. Are the above information correct? > 2. Is there any other info missing? > 3. How do I understand sample rate and bit resolution if the file has no > header? > > Thank you all in advance, > m


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