Re: Apple ][ music program (INTBASIC ?) with instrument pictures

[salfter@salfter.diespammersdie.dyndns.org (Scott Alfter)]

-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1

In article <48ac369b.0403240457.3b729a1e@posting.google.com>,
Jason Armistead <Jason.Armistead@otis.com> wrote:
>Rather than being a bunch of beeps and bops, the Apple ][ speaker made
>synthesised violin-type (what I'd call "stringy") sounds.  I have seen
>these same sound routines used for other programs and was hoping I
>could dig up the source code or BLOAD-able code.

There are a couple of programs out there for playing digital audio on 8-bit
IIs.  SoftDAC, a program I wrote about 14 years ago, was one of the first. 
These programs all work by turning the speaker on and off rapidly enough
that the cone doesn't have time to fully move in and out.  While my goal
when I wrote SoftDAC was to play what are now usually called WAV files, the
same basic idea could be used for music synthesis, whether from wavetable
samples or for waveforms generated in a more programmatic manner.

I've not run across the program you describe, but the description sounds
interesting.  I took a whack at music synthesis once or twice after doing
SoftDAC, but never got very far with it.  It'd be interesting to see how
this other program does what it does.

(The core playback routine in SoftDAC is up for viewing at
http://alfter.us/softdac.shtml.  The full program is available from
http://alfter.us/files/softdac20b2.bxy.)

  _/_
 / v \ Scott Alfter (remove the obvious to send mail)
(IIGS( http://alfter.us/            Top-posting!
 \_^_/ rm -rf /bin/laden            >What's the most annoying thing on Usenet?

-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1.2.4 (Linux)

iD8DBQFAYbfeVgTKos01OwkRAhjXAJ99exrN/DdlLF53IGwTxJnRQYOiaACbB2rE
7YivkXY2q9AuAPeHRA+l65o=
=Zw+m
-----END PGP SIGNATURE-----