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From: lbl@druhi.UUCP (LocklearLB)
Newsgroups: net.micro.atari
Subject: Re: Wave form control from ST BASIC
Message-ID: <244@druhi.UUCP>
Date: Wed, 13-Nov-85 11:44:03 EST
Article-I.D.: druhi.244
Posted: Wed Nov 13 11:44:03 1985
Date-Received: Thu, 14-Nov-85 07:23:05 EST
References: <3503@pur-ee.UUCP>
Organization: AT&T Information Systems Laboratories, Denver
Lines: 23
Keywords: sound 520st wave ST-BASIC envelope

>Having just received my copy of ST Basic, I've been writing some short
>programs to play with the built in sound chip.  The manual page for the
>"wave" command is missing the table of various envelopes available for the
>sound chip.  Does anyone have such a table handy?

You might try looking at the Nov. 1985 issue of ANTIC magazine.  There is
a pretty good article about the sound chip and how to use it from C.  The
information about the chip is applicable to ST Basic usage also. 

>Is it possible to set up two or three *seperate* envelopes?  One for each
>voice perhaps?  Is I read the manual I don't think you can do it from basic,
>but perhaps you could "poke" the settings into the chip?

After looking at the article in ANTIC I am inclined to say that the chip only
has the capability for one envelope.  You would think that if it has three voices
the designers would have given it three envelopes.  Sigh.....

>--Dwight Mckay, ECN Software Support [...ihnp4!pur-ee!mckay]

Barry Locklear
AT&T Information Systems Labs
Denver, CO
ihnp4!druhi!lbl