Path: utzoo!mnetor!tmsoft!torsqnt!news-server.csri.toronto.edu!bonnie.concordia.ca!uunet!cs.utexas.edu!ut-emx!ccwf.cc.utexas.edu
From: daveh@ccwf.cc.utexas.edu (David H. Huang)
Newsgroups: comp.sys.apple2
Subject: Re: GS Sampling - Questions?
Message-ID: <44335@ut-emx.uucp>
Date: 18 Feb 91 04:07:14 GMT
References: <60166@eerie.acsu.Buffalo.EDU>
Sender: news@ut-emx.uucp
Reply-To: daveh@ccwf.cc.utexas.edu (David H. Huang)
Organization: The University of Texas at Austin
Lines: 41

In article <60166@eerie.acsu.Buffalo.EDU> v097pba8@ubvmsd.cc.buffalo.edu writes:
>
>	I am interested in doing some sampling applications with my GS and
>I'd was wonder if someone could enlighten me.  What is the max baud rate
>the GS can handle (probably based on the card one uses to digitize)?

What does baud rate have to do with digitizing (unless you're using
something that sends the digitized data through the serial port, like
Farallon's MacRecorder(?) for the Mac)? I guess you want to know the
maximum digitizing rate a card can handle. Well... the AE Sonic
Blaster card uses the Ensoniq's A/D converter which is supposed to be
able to digitize in 26 cycles. With a clock rate of about 2.5MHz, you
can theoretically digitize at 96000Hz, but there is some overhead. I'm
pretty sure you can get 44000Hz though, although the Sonic Blaster
software might not be able to do it. Note: I don't have a Sonic
Blaster card, but I do know stuff about it and I do know how fast the
Ensoniq can digitize, but if I made any mistakes, please correct me.

>Also what is the resolution?  Eight bit?  Sixteen bit?  And is it possible
>to sample directly to a disk?  What I'd like is a CD quality sample rate
>that can store upwards of three minutes.  Is this possible?  (Definite Hard
>drive...)

Currently, you can only get 8 bit resolution. No program that I know
of can sample directly to disk (at least not with a decent sampling
rate). However, you can play sounds from disk with LongPlay, by me (plug plug
:-). If you really need to digitize more than 3 minutes of sound, you
could digitize in pieces and stick them together, but it's _very_
tedious and pretty difficult to edit it so you don't notice where the
first part ends and the second begins.

BTW, LongPlay v1.1 will be done Real Soon Now, and it has some neat
features, such as support for the AE Sonic Blaster and Audio Animator
file format and ability to play at different speeds.


-- 
David Huang                                 |
Internet: daveh@ccwf.cc.utexas.edu          | "Slight accidents with funny rays
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