From theory to practice

[sparkz_alot]

Looking at your output, it appears they added what, 184 bytes to the header? From what I've read (actually glanced over) was that over time the Windows/IBM wave format has evolved to include a number of enhancements, including what is shown in your output.  That said, since it buggers up the start of the 'data' section, I suppose one would first have to determine where "data" actually appears in newer files in order to know the size of the header and in turn the size of the actual data.  For instance, as of 2007, MS has allowed for 18 different speakers (channels)...say whaaa?

I wonder if the additional bytes are the new 'standard' size for optional information and if so, what sort of info can be put in it?

I suppose I'll get some more recent wave files and see what I can see.

btw, the MS article is located here: https://msdn.microsoft.com/en-us/library...s.85).aspx

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Seems I answered my own questions. I came across this document that explains (at least as of 1994) the newer format.  You have to scroll down a bit to the .WAV section.

http://www-mmsp.ece.mcgill.ca/Documents/...IFFNEW.pdf