jiro@shaman.com (Jiro Nakamura) (05/25/91)
Hiya - The DSP chip on the NeXT is what makes the NeXT a NeXT, but how are people using it? I've been listening on the net for quite a while now, but I haven't heard many people commenting on it. Is it being underutilized? I don't think there are that many apps using it, right? :-! I'd really like to hear from people who are using the chip. I've wanted to work on it too, but NeXT does not provide many tools. I'd really like to see a DSPKit, along the lines of the appkit. The library of routines provided seem difficult to use. Has anyone had much experience in this? Is anyone interested in selling a library of routines for the DSP? I'd especially like to hear from academia. What are the scientific uses of the DSP? Or is it an albatross? I think that a NeXT without the DSP is like castrating it into a Mac, but what can we use it for? Can we explore some possibilities? How about the ten wackiest things to do with the DSP (no boring things like: fax modem, ECG recorder, powerglove monitor, etc. :-) - jiro nakamura jiro@shaman.com -- Jiro Nakamura jiro@shaman.com The Shaman Group (607) 256-5125 VOICE "Bring your dead, dying shamans here!" (607) 277-1440 FAX/Data
eps@toaster.SFSU.EDU (Eric P. Scott) (05/25/91)
In article <1991May25.023910.8736@shaman.com> jiro@shaman.com (Jiro Nakamura) writes: > The DSP chip on the NeXT is what makes the NeXT a NeXT, but how are >people using it? I've been listening on the net for quite a while now, but >I haven't heard many people commenting on it. Is it being underutilized? Everytime you output an 8KHz mu-law sound, you're running it through the DSP to resample it to 22KHz. (Note that the system's beep sounds are all 16-bit linear 22KHz soundfiles, which can be fed directly to sound out.) -=EPS=-
jiro@shaman.com (Jiro Nakamura) (05/30/91)
Hiya - I received a lot of postings from many people about this issue. I'm writing up the summary (UnixWorld style) into a separate posting which will follow this article. Some people asked where they could get some more information on the DSP, one person referred this archive: ---------- I hope following pointer may help your DSP library and applications which turns very useful for me at the beginning of my DSP experience. It is at ivucsb.sba.ca There are many utilities as well as sample applications but you need to convert them to NeXT way. Hope I just return back IOU to you in the last time..... Soo lee@cs.wisc.edu ---------------- Hope this helps people. :-) - jiro -- Jiro Nakamura jiro@shaman.com The Shaman Group (607) 256-5125 VOICE "Bring your dead, dying shamans here!" (607) 277-1440 FAX/Data
pukite@vz.acs.umn.edu (J. PUKITE) (05/30/91)
In article <1991May25.023910.8736@shaman.com>, jiro@shaman.com (Jiro Nakamura) writes... > [... deleted] > I'd especially like to hear from academia. What are the scientific >uses of the DSP? Or is it an albatross? I think that a NeXT without the DSP >is like castrating it into a Mac, but what can we use it for? Can we >explore some possibilities? How about the ten wackiest things to do with >the DSP (no boring things like: fax modem, ECG recorder, powerglove monitor, We have investigated some scientific applications using a floating-point DSP in statistical computations and simulation. Using an AT&T DSP32 we were able to achieve an average computation speedup of 100 over a conventional 20 MHz 386. For details see our paper in the Winter 1990/1991 issue of Simulation Digest (a joint publication of ACM SIGSIM and IEEE Computer Society TCSIM): "Digital Signal Processors for Computation Intensive Statistics and Simulation", pp.20-29. J.Pukite/DAINA pukite@vz.acs.umn.edu
todd@appmag.com (Todd Day) (05/30/91)
jiro@shaman.com (Jiro Nakamura) writes:
%I hope following pointer may help your DSP library and applications which
%turns very useful for me at the beginning of my DSP experience. It is at
% ivucsb.sba.ca
This machine no longer exists (it was "ivucsb.sba.ca.us"). I
move the files to an ftp'able site. Watch for posting end of
this month.
--
Todd Day | todd@appmag.com