From ffischer@u-tokyo.ac.jp Sun Apr 17 23:20:45 1994 Path: ashpoly!cascade!brgate!saturno!u-tokyo!ffischer From: ffischer@u-tokyo.ac.jp (Freya Fischer) Newsgroups: comp.sys.m68k Subject: Atari Falcon 030 Motorola DSP56001 code for Stardust carrier extraction Message-ID: <1994Apr17.232045.7563@u-tokyo.ac.jp> Date: Sun, 17 Apr 1994 23:20:45 GMT Organization: University of Tokyo Department of Information Science NNTP-Posting-Host: u-tokyo.ac.jp X-Newsreader: Netscape 1.1N Lines: 10 Taking advantage of the Falcon's built-in 32 MHz DSP56001 and 16-bit audio codec. 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. -- Freya Fischer Tape trading list upon request. SASE required for international mail. From rjohansson@mindspring.com Mon Apr 18 06:58:45 1994 Path: ashpoly!bigsur!pacrim!krgate!eunha!mindspring!rjohansson From: rjohansson@mindspring.com (Raj Johansson) Newsgroups: comp.sys.m68k Subject: Re: Atari Falcon 030 Motorola DSP56001 code for Stardust carrier extraction Message-ID: <1994Apr18.065845.1260@mindspring.com> Date: Mon, 18 Apr 1994 06:58:45 GMT References: <1994Apr17.232045.7563@u-tokyo.ac.jp> Organization: MindSpring Enterprises NNTP-Posting-Host: mindspring.com X-Newsreader: NewsWatcher 2.0b24 Lines: 9 In article <1994Apr17.232045.7563@u-tokyo.ac.jp>, ffischer@u-tokyo.ac.jp (Freya Fischer) writes: > Taking advantage of the Falcon's built-in 32 MHz DSP56001 and 16-bit audio codec. > The 14.2 Hz peak shows up as a bright white vertical line against the blue background noise. The SSI to DSP56001 architecture on the Falcon is magnificent. Zero CPU overhead during 50 kHz audio acquisition. -- Raj Johansson Tape trading list upon request. SASE required for international mail. From dkang@kth.se Wed Apr 20 10:05:45 1994 Path: ashpoly!cascade!transat!eunet-fr!teletel!kth!dkang From: dkang@kth.se (Diego Kang) Newsgroups: comp.sys.m68k Subject: Re: Atari Falcon 030 Motorola DSP56001 code for Stardust carrier extraction Message-ID: <1994Apr20.100545.5922@kth.se> Date: Wed, 20 Apr 1994 10:05:45 GMT References: <1994Apr17.232045.7563@u-tokyo.ac.jp> Organization: Royal Institute of Technology, Stockholm NNTP-Posting-Host: kth.se X-Newsreader: WinVN 0.99.5 Lines: 9 In article <1994Apr17.232045.7563@u-tokyo.ac.jp>, ffischer@u-tokyo.ac.jp (Freya Fischer) writes: > Taking advantage of the Falcon's built-in 32 MHz DSP56001 and 16-bit audio codec. I tested this with a vinyl rip fed into the Falcon mic input. Carrier lock occurred at second 14 of 'Synthetic Dawn'. -- Diego Kang "There are 14 nodes and only 10 countries. Count again." Macintosh IIfx / NEXTSTEP 3.3 From esmirnov@cern.ch Thu Apr 21 13:02:45 1994 Path: ashpoly!cascade!transat!eunet-de!hansebox!cern!esmirnov From: esmirnov@cern.ch (Élodie Smirnov) Newsgroups: comp.sys.m68k Subject: Re: Atari Falcon 030 Motorola DSP56001 code for Stardust carrier extraction Message-ID: <1994Apr21.130245.6812@cern.ch> Date: Thu, 21 Apr 1994 13:02:45 GMT References: <1994Apr17.232045.7563@u-tokyo.ac.jp> <1994Apr18.065845.1260@mindspring.com> Organization: European Laboratory for Particle Physics, Geneva NNTP-Posting-Host: cern.ch X-Newsreader: NewsWatcher 2.0b24 Lines: 10 In article <1994Apr18.065845.1260@mindspring.com>, rjohansson@mindspring.com (Raj Johansson) writes: > The SSI to DSP56001 architecture on the Falcon is magnificent. Zero CPU overhead during 50 kHz audio acquisition. Too bad Atari marketing was so incompetent that nobody bought the Falcon before they pulled out of the computer market. Top-posters will be placed in my ~/.killfile without notice. -- Élodie Smirnov -- European Laboratory for Particle Physics, Geneva "In theory there is no difference between theory and practice."