On Sat, 03 May 2008 13:02:40 +0200, Kassen wrote:
>
>>
>> 3. Just introduce me to the sound card, and let us develop our own
>> rapport/language
>> in which we shall converse.
>
> Have a look at Forth. Forth (in some versions) can boot straight into
> Forth, skipping the OS altogether, at that point the *only* thing you
> can do is develop a language to converse in... with no middle man.
> I'd take a ancient computer for this, 8086 or so because there are
> good reasons for middle-men on modern ones.
Here's the audio section of a Chua oscillator simulation from Marcel
Hendrix's iForth:
-- Static preferences for the wav output file: 1 second, 44100 kHz,
stereo, 16bit
: AUDIOSCALE ( F: r max -- ) ( -- u )
F/ 15e F2^x F* FROUND F>S ; PRIVATE
: WRITE-CHUA ( "name" -- )
0 LOCAL ix
0e 0e FLOCALS| vc1max vc2max |
#1000 #44100 TRUE #16 WAV-INIT \ 1 second, 44100 kHz, stereo, 16bits
0e 1e-9 0e 1e x{ #=>
#100 TO steps
dT 100e F* 1/F F>S TO cycles \ cycles = 1 second / (steps * dT)
SIM-LOOP
vC1{ MATRANGE FSWAP FABS FMAX TO vc1max
vC2{ MATRANGE FSWAP FABS FMAX TO vc2max
'wav /wav_at_ BOUNDS DO vC1{ ix } DF_at_ vc1max audioscale I B!
vC2{ ix } DF_at_ vc2max audioscale I 2+ B!
1 +TO ix
4 +LOOP
/PARSE WAV-FLUSH ;
The current release uses the ALSA OSS emulation as a sound interface.
There's a native ALSA interface that's almost finished, and Jack and OS
X sound support are in the works. You can, of course to the extent that
Linux, Windows or OS X will let you, program directly to the hardware.
iForth is a native compiler, arguably the fastest Intel Forth, arguably
as fast as gcc.
<
http://home.iae.nl/users/mhx/>
Best, Charles
Received on Sat May 03 2008 - 12:30:44 BST