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From: dplatt@teknowledge-vaxc.ARPA (Dave Platt)
Newsgroups: comp.sys.mac
Subject: Re: Wanted: Sound Resources for Mac II
Message-ID: <18181@teknowledge-vaxc.ARPA>
Date: Thu, 22-Oct-87 13:00:33 EST
Article-I.D.: teknowle.18181
Posted: Thu Oct 22 13:00:33 1987
Date-Received: Sun, 25-Oct-87 10:33:03 EST
References: <1000@saturn.ucsc.edu>
Organization: Teknowledge, Inc., Palo Alto CA
Lines: 54
In-reply-to: fiatlux@ucscc.UCSC.EDU.ucsc.edu's message of 22 Oct 87 02:51:47 GMT


Let's see... I'll answer your questions out of order, if I may...

> I also have a bunch of SoundCap files (type ASND) that I would
> like to be able to convert to snd type to put in the system. Is
> it possible to do this? I have Super Play 4.0, but all it does is
> play them, nothing about converting them to snd type sounds.

Yes, it's possible.  I posted a copy of the "Sound->snd" converter to
Info-Mac last week;  you should be able to find it in the archive now,
or within a couple of days (whenever the next digest comes out).  This
application eats a SoundCap file, and produces a resource file
containing a single "snd " resource suitable for use on the Mac II
(and nowhere else, I gather).

>                                           but when I put them
> into the system, some of them play at the wrong speed (about 2 
> times too fast). Does anybody know of a way to slow down these 
> sounds so that they play correctly?

Sigh.  It seems that the author of the Sound->snd converter didn't
take into account the fact that Soundcap files can contain data which
was digitized at any of several different sampling rates [at least, I
assume that's what's occurring].  Sound->snd appears to convert the
data to resource form on the assumption that the data was digitized at
the highest (?) sampling rate;  if it was digitized at a lower rate,
then it plays back too fast ("pop... ooh!" rather than "BOOM....
OOOOoooohhhh!").  As far as I can see, there's no easy way to stretch
the sounds back out to their normal pitches... it wouldn't be too hard
to interpolate between the existing samples (and thus approximate the
correct waveform), but I don't have any code with which to do it.  I
don't even have the resource format handy (too cheap to buy the APDA
version of IM V).

> Is there a utility like Font/DA mover (only it would be Sound
> Mover) for the Mac II to put new snd resources in the system
> folder? Something that would take SoundCap files as well as snd
> type sounds? 

I haven't seen one.  Sound->snd, plus ResEdit, is the only combination
I've succeeded in using.

> If you have some interesting sounds (or even if you don't) I'd be
> interested in getting a copy of them and would be willing to
> trade what we have for them... 

Well, I've got about 500k of Soundcap files, including all of the ones
that I converted into resource format and posted to Info-Mac last
week.  John Cleese ("Aah, I see you've got the machine that goes
BING!"), the Roadrunner, numerous musical chords and chimes, David
Letterman's glass window, and a bunch of others.  I'd gladly trade a
copy of these for a version of Sound->snd that would correctly convert
Soundcap files regardless of their original sampling rate... somehow,
the question "Are you out of your Vulcan mind??" doesn't sound right
when squeaked out by a hyperthyroid mouse in less than 2 seconds!