Path: utzoo!utgpu!news-server.csri.toronto.edu!rutgers!psuvax1!psuvm!jkt100
From: JKT100@psuvm.psu.edu (JKT)
Newsgroups: comp.sys.amiga
Subject: Re: concatenating IFF sound files
Message-ID: <90215.221430JKT100@psuvm.psu.edu>
Date: 4 Aug 90 02:14:29 GMT
References: <1990Jul30.074810.10791@agate.berkeley.edu>
Organization: Penn State University
Lines: 54

In article <1990Jul30.074810.10791@agate.berkeley.edu>,
dansu@volcano.berkeley.edu (Dan Su) says:
>
>Is there a way to concatenate two IFF sound files?

Yes, the PerfectSound 3.0 software will easily allow you to cut
and paste sounds together.  I've done this often with it.  Works well.

>What about concatenating
>one IFF sound file and one raw (headerless) sound file?

Also possible.  PerfectSound can load a headerless file and let you
play it at various rates until you find the proper playback speed.
You then set the speed of the sample to that value and resave it.
Voila!  Your raw file is now in IFF format.  If your two sounds
play at different rates, you can use PerfectSound to "resample"
the slower one at the faster one's speed.  It won't sound better
of course, but it will even up the speeds.  Then you append one
file to the other and you're done.

>Furthermore, is there a limit as to how large an IFF sound file can be?
>I'm trying to see if I can digitize an entire song (let's say 5 minutes)
>at a decent sampling rate.  However, this would result in a file several
>megs long...

I have digitized an entire song...  "Twist and Shout"  It's one HECK
of a blow-away to people I show my Amiga off to, to have it all play
in the background while I show them other stuff!  The file size was
only limited by my RAM while I sampled.  I have 3 megs, and
PerfectSound was able to use 1.7m of it (it won't touch Chip RAM
apparently).  To get the whole 2.5 minutes in that space, I sampled
at 10500  samples/sec., which sounds a bit fuzzy at times, but
is acceptable for the particular song, and still sounds good.
To save on hard drive space, I crunched it down to 2 floppies with
a hard drive backup program, and unpack it whenever I have advance
warning of visitors.   :-)

>I know this isn't really practical but I was just wondering if it
>could be done.
>
>-Dan Su
>dansu@volcano.berkeley.edu

Of course it's not practical.... But it sure is fun!!!!   ;-)

                                                            Kurt
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