slightly OT: raw audio file format

[Massimo Grassi <massimo.grassi@xxxxxxxx>]

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