Path: utzoo!utgpu!news-server.csri.toronto.edu!rpi!uwm.edu!ux1.cso.uiuc.edu!cs326ag
From: cs326ag@ux1.cso.uiuc.edu (Loren J. Rittle)
Newsgroups: comp.sys.next
Subject: Re: .snd file format
Message-ID: <1991Apr29.165234.4296@ux1.cso.uiuc.edu>
Date: 29 Apr 91 16:52:34 GMT
Organization: University of Illinois at Urbana
Lines: 39

In article <1991Apr29.122700.21641@ux1.cso.uiuc.edu> I wrote:
[I am following up my on article because a good amount of info has
come in already from one person in the form of a header file, thus
I can now decode a .snd file.  Thanks to the unnamed person.]

>Does anyone know the file format of a .snd file?  I have some .snd
>files that were recorded with a NeXTStation that I would like to
>convert to something I can use on my own machine.  Here's what I know
>so far [from the head of Quest_for_the_Holy_Grail.snd :-]:
>0000: 2E736E64 0000001C 00052432 00000001    .snd......$2....
>0010: 00001F4C 00000001 00000000 7BFC72F8    ...L........{|rx

To fill in the header:
Magic #:		0x2E736E64 ".snd" (4 bytes)
Size of header:		0x0000001C (4 bytes)
Size of sound sample:	0x00052432 (4 bytes)
Format:			0x00000001 (4 bytes)
Rate:			0x00001F4C (4 bytes)
# of Channels:		0x00000001 (4 bytes)
info:			0x00000000 (at least 4 bytes (4 in this case))
Sound sample:		0x7BFC72F8 ... ... (336946 bytes)

Format one is SND_FORMAT_MULAW_8, the final question is how is
MULAW_8 different from ULAW_8 as used on the Suns?  I know that
there is a difference because the ULAW2MySoundFormat translator
did not produce anything that sounded close to correct...
Anyone know and willing to quickly explain it?

As before, I will gladly accept email and summarize in a brief posting
as above.

Thanks for your time,
Loren J. Rittle
l-rittle@uiuc.edu
-- 
``NewTek stated that the Toaster  *would*  *not*  be made to directly support
  the Mac, at this point Sculley stormed out of the booth...'' --- A scene at
  the recent MacExpo.  Gee, you wouldn't think that an Apple Exec would be so
  worried about one little Amiga device... Loren J. Rittle  l-rittle@uiuc.edu