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From: rpo p on 8 Apr 2010 08:50
Hello,

I have *.raw audio files and I need to open them in matlab, how can I do so?

Thanks for any help.

Royi
From: Walter Roberson on 8 Apr 2010 09:34
rpo p wrote:

> I have *.raw audio files and I need to open them in matlab, how can I do
> so?

FID = fopen(FileName,'r');
if FID < 0
error('Failed to open file');
end


I suspect, though, that you want to do more than just open them, and
want to read the content ;-) You can use fread() for that, but you need
to know the binary format that the samples are stored in. I've seen .raw
files used for 8 bit unsigned integer samples, 16 bit signed and
unsigned integer samples, 32 bit signed and unsigned integer samples, 32
bit fixed point samples, 32 bit floating point samples, 10 and 12 and 14
bit samples packed in various ways into 16 bits. And even 8 bit u-law
and m-law encoded samples (yeah, I know using an encoding contradicts
the extension .raw, but it was on a system on which the sound hardware
itself took u-law encoded samples.)
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