🚀 go-pugleaf

From article <1993Aug20.014246.4106@hal.depaul.edu>, by jleonard@falcon.depaul.edu (Jim R. Leonard):
> Before you dismiss me as a newbie who is in the wrong newsgroup, please
> hear me out-- I've recently obtained a SoundBlaster 16 ASP to do some 
> quick-n-dirty 44.1 KHz 16-bit mono sampling to sound effects so that I
> can resample them down into IBM-PCrap compatible 11 KHz 8-bit for a game
> that I'm writing.  What I wanted to know, after unsuccesfully trying
> to understand the software they provide, is this:  What the heck is the
> "ASP" on the SB 16 ASP?  It functions as a DSP that can transform the
> 16-bit data to ADPCM, MU-law, or A-law as it's coming in.  Is it 
> reprogrammable?  Who makes it?  Where can I get programming dox?
> 
> I've been trying to contact everybody (even Creative Labs) abou this
> and no-one seems to know anything about it... Please help!

Yes, I agree it's really hard to do any work with the newest sound boards.
I even found "SoundBlaster -- the Official Book" from Creative said nothing
about ASP-16 programming.

I sent several questions about ASP-16 to these newsgroups several weeks
ago but got no reply at all. After several weeks painful experiments,
I finally worked out how to manipulate the raw sound data .

If you work with Windows, just try the low level waveform recording and
playing and you can play with the raw sound data in any format (ie. any
sample rate, 8/16 bits, and mono/stereo, etc.). The only thing to be
noted is that some 386/486 do not work properly with 16-bit DMA. You
have to use 8-bit DMA instead in this case. It does not affect the
quality of 16-bit sound recording/playing but the speed is much slower
than that for 16-bit DMA.

If you work with DOS directly, you will have more work to do. However,
you can modify your 8-bit soundblaster pro routines (came with the
programming development kit) so that it can work with ASP-16.

Good luck.

Wilson Wen