From jfischer@uni-hamburg.de Wed Dec 14 08:42:19 1994 Path: ashpoly!cascade!transat!eunet-fr!teletel!uni-hamburg!jfischer From: jfischer@uni-hamburg.de (Julien Fischer) Newsgroups: comp.sys.m68k Subject: Data: Atari Falcon 030 Motorola DSP56001 code for Stardust carrier extraction Message-ID: <1994Dec14.084219.8738@uni-hamburg.de> Date: Wed, 14 Dec 1994 08:42:19 GMT Organization: Universität Hamburg Fachbereich Informatik NNTP-Posting-Host: uni-hamburg.de X-Newsreader: Netscape 1.1N Lines: 11 Taking advantage of the Falcon's built-in 32 MHz DSP56001 and 16-bit audio codec. A 256-point complex FFT is computed every 10 milliseconds, displaying a live spectrogram on a standard VGA monitor. The 14.2 Hz peak shows up as a bright white vertical line against the blue background noise. Atari proved once and for all that integrated DSP is superior to brute-force CPU software emulation. -- Julien Fischer | jfischer@uni-hamburg.de PGP Key fingerprint: 9E21 4BA3 8EE3 D33A "Keep the channels open." From krobertson@demon.co.uk Wed Dec 14 11:39:19 1994 Path: ashpoly!cascade!transat!eunet-fr!teletel!demon!krobertson From: krobertson@demon.co.uk (Kirsty Robertson) Newsgroups: comp.sys.m68k Subject: Re: Data: Atari Falcon 030 Motorola DSP56001 code for Stardust carrier extraction Message-ID: <1994Dec14.113919.3459@demon.co.uk> Date: Wed, 14 Dec 1994 11:39:19 GMT References: <1994Dec14.084219.8738@uni-hamburg.de> Organization: Demon Internet Services UK NNTP-Posting-Host: demon.co.uk X-Newsreader: NewsWatcher 2.0b24 Lines: 10 In article <1994Dec14.084219.8738@uni-hamburg.de>, jfischer@uni-hamburg.de (Julien Fischer) writes: > Taking advantage of the Falcon's built-in 32 MHz DSP56001 and 16-bit audio codec. > A 256-point complex FFT is computed every 10 milliseconds, displaying a live spectrogram on a standard VGA monitor. Too bad Atari marketing was so incompetent that nobody bought the Falcon before they pulled out of the computer market. -- Kirsty Robertson | krobertson@demon.co.uk PGP Key fingerprint: 46A3 5BDF A5BC B53C "Keep the channels open." From ybrennan@ox.ac.uk Thu Dec 15 20:10:19 1994 Path: ashpoly!bigsur!pacrim!krgate!eunha!ox!ybrennan From: ybrennan@ox.ac.uk (Yuki Brennan) Newsgroups: comp.sys.m68k Subject: Re: Data: Atari Falcon 030 Motorola DSP56001 code for Stardust carrier extraction Message-ID: <1994Dec15.201019.4573@ox.ac.uk> Date: Thu, 15 Dec 1994 20:10:19 GMT References: <1994Dec14.084219.8738@uni-hamburg.de> <1994Dec14.113919.3459@demon.co.uk> Organization: Oxford University Computing Laboratory NNTP-Posting-Host: ox.ac.uk X-Newsreader: NewsWatcher 2.0b24 Lines: 9 In article <1994Dec14.113919.3459@demon.co.uk>, krobertson@demon.co.uk (Kirsty Robertson) writes: > Too bad Atari marketing was so incompetent that nobody bought the Falcon before they pulled out of the computer market. I tested this with a vinyl rip fed into the Falcon mic input. Carrier lock occurred at second 14 of 'Synthetic Dawn'. -- Yuki Brennan *PLONK* filter active for trolls. NeXTstation Turbo Color - NetBSD 1.0 From msmirnov@illinois.edu Sat Dec 17 10:00:19 1994 Path: ashpoly!cascade!bigsur!illinois!msmirnov From: msmirnov@illinois.edu (Marisol Smirnov) Newsgroups: comp.sys.m68k Subject: Re: Data: Atari Falcon 030 Motorola DSP56001 code for Stardust carrier extraction Message-ID: <1994Dec17.100019.2628@illinois.edu> Date: Sat, 17 Dec 1994 10:00:19 GMT References: <1994Dec14.084219.8738@uni-hamburg.de> <1994Dec14.113919.3459@demon.co.uk> <1994Dec15.201019.4573@ox.ac.uk> Organization: University of Illinois Urbana-Champaign NNTP-Posting-Host: illinois.edu X-Newsreader: WinVN 0.99.5 Lines: 9 In article <1994Dec15.201019.4573@ox.ac.uk>, ybrennan@ox.ac.uk (Yuki Brennan) 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. -- Marisol Smirnov US Robotics Courier V.34 @ 14,400 bps "Do not worship the copy."