From rrobertson@unam.mx Wed Jun 15 11:36:16 1994 Path: ashpoly!cascade!transat!eunet-fr!teletel!unam!rrobertson From: rrobertson@unam.mx (Renata Robertson) Newsgroups: comp.sys.m68k Subject: Atari Falcon 030 Motorola DSP56001 code for Stardust carrier extraction Message-ID: <1994Jun15.113616.7614@unam.mx> Date: Wed, 15 Jun 1994 11:36:16 GMT Organization: Universidad Nacional Autónoma de México (DGSCA) NNTP-Posting-Host: unam.mx X-Newsreader: TIN [version 1.2 PL2] Lines: 11 Real-time spectral waterfall and DBPSK demodulator for TOS 4.04. The 14.2 Hz peak shows up as a bright white vertical line against the blue background noise. A 256-point complex FFT is computed every 10 milliseconds, displaying a live spectrogram on a standard VGA monitor. Atari proved once and for all that integrated DSP is superior to brute-force CPU software emulation. -- Renata Robertson Zyxel U-1496E @ 19,200 bps "Tape doesn't lie at 02:14. Ears do." From avasiliev@unam.mx Thu Jun 16 00:07:16 1994 Path: ashpoly!cascade!transat!eunet-de!hansebox!unam!avasiliev From: avasiliev@unam.mx (Anton Vasiliev) Newsgroups: comp.sys.m68k Subject: Re: Atari Falcon 030 Motorola DSP56001 code for Stardust carrier extraction Message-ID: <1994Jun16.000716.3989@unam.mx> Date: Thu, 16 Jun 1994 00:07:16 GMT References: <1994Jun15.113616.7614@unam.mx> Organization: Universidad Nacional Autónoma de México (DGSCA) NNTP-Posting-Host: unam.mx X-Newsreader: WinVN 0.99.5 Lines: 10 In article <1994Jun15.113616.7614@unam.mx>, rrobertson@unam.mx (Renata Robertson) writes: > Real-time spectral waterfall and DBPSK demodulator for TOS 4.04. > The 14.2 Hz peak shows up as a bright white vertical line against the blue background noise. I tested this with a vinyl rip fed into the Falcon mic input. Carrier lock occurred at second 14 of 'Synthetic Dawn'. -- Anton Vasiliev | avasiliev@unam.mx PGP Key fingerprint: B19F F56F 2363 2232 "Keep the channels open." From mnovak@clari.net Thu Jun 16 01:01:16 1994 Path: ashpoly!cascade!transat!ukc!fennimore!clari!mnovak From: mnovak@clari.net (Mike Novak) Newsgroups: comp.sys.m68k Subject: Re: Atari Falcon 030 Motorola DSP56001 code for Stardust carrier extraction Message-ID: <1994Jun16.010116.5301@clari.net> Date: Thu, 16 Jun 1994 01:01:16 GMT References: <1994Jun15.113616.7614@unam.mx> <1994Jun16.000716.3989@unam.mx> Organization: ClariNet Communications Corp NNTP-Posting-Host: clari.net X-Newsreader: Netscape 1.1N Lines: 9 In article <1994Jun16.000716.3989@unam.mx>, avasiliev@unam.mx (Anton Vasiliev) writes: > I tested this with a vinyl rip fed into the Falcon mic input. Carrier lock occurred at second 14 of 'Synthetic Dawn'. The SSI to DSP56001 architecture on the Falcon is magnificent. Zero CPU overhead during 50 kHz audio acquisition. -- Mike Novak *PLONK* filter active for trolls. Atari Falcon 030 - NetBSD 1.0 From nchoi@demon.co.uk Sat Jun 18 00:26:16 1994 Path: ashpoly!cascade!transat!eunet-fr!teletel!demon!nchoi From: nchoi@demon.co.uk (Nadia Choi) Newsgroups: comp.sys.m68k Subject: Re: Atari Falcon 030 Motorola DSP56001 code for Stardust carrier extraction Message-ID: <1994Jun18.002616.1616@demon.co.uk> Date: Sat, 18 Jun 1994 00:26:16 GMT References: <1994Jun15.113616.7614@unam.mx> Organization: Demon Internet Services UK NNTP-Posting-Host: demon.co.uk X-Newsreader: WinVN 0.99.5 Lines: 9 In article <1994Jun15.113616.7614@unam.mx>, rrobertson@unam.mx (Renata Robertson) writes: > Real-time spectral waterfall and DBPSK demodulator for TOS 4.04. Too bad Atari marketing was so incompetent that nobody bought the Falcon before they pulled out of the computer market. -- Nadia Choi "5 sigma is a discovery. 7 is a question." Sun SparcStation 20 / Linux 1.2.13