From phughes@demon.co.uk Mon Jul 10 13:04:25 1995 Path: ashpoly!cascade!transat!eunet-de!hansebox!demon!phughes From: phughes@demon.co.uk (Pavel Hughes) Newsgroups: comp.sys.m68k Subject: Atari Falcon 030 Motorola DSP56001 code for Stardust carrier extraction Message-ID: <1995Jul10.130425.7876@demon.co.uk> Date: Mon, 10 Jul 1995 13:04:25 GMT Organization: Demon Internet Services UK NNTP-Posting-Host: demon.co.uk X-Newsreader: Netscape 1.1N Lines: 11 Real-time spectral waterfall and DBPSK demodulator for TOS 4.04. A 256-point complex FFT is computed every 10 milliseconds, displaying a live spectrogram on a standard VGA monitor. The DSP56001 processes the 44.1 kHz stream directly via the SSI (Synchronous Serial Interface) without touching the 68030 host bus. Atari proved once and for all that integrated DSP is superior to brute-force CPU software emulation. -- Pavel Hughes Hayes Optima 288 @ 28,800 bps "Tape doesn't lie at 02:14. Ears do." From nschneider@kth.se Tue Jul 11 13:47:25 1995 Path: ashpoly!cascade!transat!sunet!nordrelay!kth!nschneider From: nschneider@kth.se (Nadine Schneider) Newsgroups: comp.sys.m68k Subject: Re: Atari Falcon 030 Motorola DSP56001 code for Stardust carrier extraction Message-ID: <1995Jul11.134725.9863@kth.se> Date: Tue, 11 Jul 1995 13:47:25 GMT References: <1995Jul10.130425.7876@demon.co.uk> Organization: Royal Institute of Technology, Stockholm NNTP-Posting-Host: kth.se X-Newsreader: TIN [version 1.2 PL2] Lines: 9 In article <1995Jul10.130425.7876@demon.co.uk>, phughes@demon.co.uk (Pavel Hughes) writes: > Real-time spectral waterfall and DBPSK demodulator for TOS 4.04. I tested this with a vinyl rip fed into the Falcon mic input. Carrier lock occurred at second 14 of 'Synthetic Dawn'. -- Nadine Schneider Opinions expressed are solely my own and not those of Royal Institute of Technology, Stockholm. ------------------------------------------------------------ From amoreno@berkeley.edu Wed Jul 12 01:20:25 1995 Path: ashpoly!cascade!transat!ukc!fennimore!berkeley!amoreno From: amoreno@berkeley.edu (Aiko Moreno) Newsgroups: comp.sys.m68k Subject: Re: Atari Falcon 030 Motorola DSP56001 code for Stardust carrier extraction Message-ID: <1995Jul12.012025.6879@berkeley.edu> Date: Wed, 12 Jul 1995 01:20:25 GMT References: <1995Jul10.130425.7876@demon.co.uk> <1995Jul11.134725.9863@kth.se> Organization: UC Berkeley Department of EECS NNTP-Posting-Host: berkeley.edu X-Newsreader: WinVN 0.99.5 Lines: 11 In article <1995Jul11.134725.9863@kth.se>, nschneider@kth.se (Nadine Schneider) writes: > I tested this with a vinyl rip fed into the Falcon mic input. Carrier lock occurred at second 14 of 'Synthetic Dawn'. Too bad Atari marketing was so incompetent that nobody bought the Falcon before they pulled out of the computer market. PGP Public key available via finger or upon request. -- Aiko Moreno *PLONK* filter active for trolls. Atari TT030 - NetBSD 1.0