Path: utzoo!utgpu!news-server.csri.toronto.edu!cs.utexas.edu!usc!snorkelwacker.mit.edu!stanford.edu!agate!ziploc!eps
From: eps@toaster.SFSU.EDU (Eric P. Scott)
Newsgroups: comp.sys.next
Subject: Re: converting sound files from sparc -> next
Summary: no, use sndconvert on a NeXT or raw2audio on a Sun
Message-ID: <1443@toaster.SFSU.EDU>
Date: 30 Mar 91 05:30:28 GMT
References: <1991Mar24.160634.20050@news.cs.indiana.edu> <1991Mar24.224638.24597@agate.berkeley.edu>
Reply-To: eps@cs.SFSU.EDU (Eric P. Scott)
Organization: San Francisco State University
Lines: 38

While I'm sure you had fun (and probably learned something) while
writing that, it doesn't do anything that the standard NeXT (or
Sun) tools don't, and doesn't qualify as an archive submission.

For those of you who haven't read the FAQ postings because you
thought they only had information for novices:

+ In SunOS 4.0.3c, audio files consisted simply of "raw" mu-law
  data.  No extension was used.  THIS FORMAT IS OBSOLETE.

  To convert this _on a NeXT_ to NeXT .snd format:

  (I copied this from a March 1990 comp.sys.next posting)

     sndconvert -o nextified.snd -f 1 -s 8012.8210513 -c 1 -r sun-sound

+ In SunOS 4.1 and later, audio files (with the .au extension) are
  binary-compatible with the NeXT .snd formats, as described on
  Sun's audio_intro(3) manual page:

     Audio files contain a header that has a magic number  (iden-
     tifying  the file as an audio file) and fields that describe
     the encoding format used to store the audio  data.   Immedi-
     ately  following the header is a variable-length information
     field in  which,  for  instance,  ASCII  annotation  may  be
     stored.

     The format of the audio file header  is  compatible  with  a
     subset  of  the  NeXT  sound  file  header.  Sun has adopted
     NeXT's sound file header ideas to facilitate the transparent
     sharing  of  audio  files  in a networked environment.  [The
     NeXT Nested and Indirect sound file types are not  currently
     supported.]

  Sun also provides a program called raw2audio (in man section 6)
  to convert "raw" sound files to the new Sun/NeXT format.

					-=EPS=-