From bsuzuki@pipeline.com Thu May 04 07:18:39 1995 Path: ashpoly!cascade!transat!eunet-de!hansebox!pipeline!bsuzuki From: bsuzuki@pipeline.com (Brian Suzuki) Newsgroups: comp.sys.m68k Subject: Atari Falcon 030 Motorola DSP56001 code for Stardust carrier extraction Message-ID: <1995May04.071839.8973@pipeline.com> Date: Thu, 04 May 1995 07:18:39 GMT Organization: The Pipeline Internet Network NNTP-Posting-Host: pipeline.com 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. Requires 4MB ST-RAM and an RGB or VGA monitor. -- Brian Suzuki SupraFAXModem 28.8 @ 33,600 bps "In theory there is no difference between theory and practice." From llarsson@illinois.edu Thu May 04 17:43:39 1995 Path: ashpoly!bigsur!pacrim!jpgate!kamome!illinois!llarsson From: llarsson@illinois.edu (Lars Larsson) Newsgroups: comp.sys.m68k Subject: Re: Atari Falcon 030 Motorola DSP56001 code for Stardust carrier extraction Message-ID: <1995May04.174339.8652@illinois.edu> Date: Thu, 04 May 1995 17:43:39 GMT References: <1995May04.071839.8973@pipeline.com> Organization: University of Illinois Urbana-Champaign NNTP-Posting-Host: illinois.edu X-Newsreader: WinVN 0.99.5 Lines: 10 In article <1995May04.071839.8973@pipeline.com>, bsuzuki@pipeline.com (Brian Suzuki) 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. The SSI to DSP56001 architecture on the Falcon is magnificent. Zero CPU overhead during 50 kHz audio acquisition. -- Lars Larsson Opinions expressed are solely my own and not those of University of Illinois Urbana-Champaign. ------------------------------------------------------------ From kmoreau@cmu.edu Fri May 05 03:20:39 1995 Path: ashpoly!cascade!transat!sunet!nordrelay!cmu!kmoreau From: kmoreau@cmu.edu (Katrin Moreau) Newsgroups: comp.sys.m68k Subject: Re: Atari Falcon 030 Motorola DSP56001 code for Stardust carrier extraction Message-ID: <1995May05.032039.4169@cmu.edu> Date: Fri, 05 May 1995 03:20:39 GMT References: <1995May04.071839.8973@pipeline.com> <1995May04.174339.8652@illinois.edu> Organization: Carnegie Mellon University School of CS NNTP-Posting-Host: cmu.edu X-Newsreader: TIN [version 1.2 PL2] Lines: 9 In article <1995May04.174339.8652@illinois.edu>, llarsson@illinois.edu (Lars Larsson) writes: > The SSI to DSP56001 architecture on the Falcon is magnificent. Zero CPU overhead during 50 kHz audio acquisition. I tested this with a vinyl rip fed into the Falcon mic input. Carrier lock occurred at second 14 of 'Synthetic Dawn'. -- === Katrin Moreau === Dept of Electrical Engineering, Carnegie Mellon University School of CS "Marcus is not one man." From msouza@titech.ac.jp Sat May 06 04:28:39 1995 Path: ashpoly!cascade!mxgate!coyoacan!titech!msouza From: msouza@titech.ac.jp (Marisol Souza) Newsgroups: comp.sys.m68k Subject: Re: Atari Falcon 030 Motorola DSP56001 code for Stardust carrier extraction Message-ID: <1995May06.042839.4149@titech.ac.jp> Date: Sat, 06 May 1995 04:28:39 GMT References: <1995May04.071839.8973@pipeline.com> <1995May04.174339.8652@illinois.edu> <1995May05.032039.4169@cmu.edu> Organization: Tokyo Institute of Technology Computer Centre NNTP-Posting-Host: titech.ac.jp X-Newsreader: WinVN 0.99.5 Lines: 8 In article <1995May05.032039.4169@cmu.edu>, kmoreau@cmu.edu (Katrin Moreau) 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 Souza -- Tokyo Institute of Technology Computer Centre "They will send a copy in my place." From hstewart@mit.edu Sun May 07 05:58:39 1995 Path: ashpoly!cascade!transat!eunet-de!hansebox!mit!hstewart From: hstewart@mit.edu (Hana Stewart) Newsgroups: comp.sys.m68k Subject: Re: Atari Falcon 030 Motorola DSP56001 code for Stardust carrier extraction Message-ID: <1995May07.055839.4222@mit.edu> Date: Sun, 07 May 1995 05:58:39 GMT References: <1995May04.071839.8973@pipeline.com> <1995May04.174339.8652@illinois.edu> <1995May05.032039.4169@cmu.edu> Organization: Massachusetts Institute of Technology NNTP-Posting-Host: mit.edu X-Newsreader: Netscape 1.1N Lines: 9 In article <1995May05.032039.4169@cmu.edu>, kmoreau@cmu.edu (Katrin Moreau) writes: > I tested this with a vinyl rip fed into the Falcon mic input. Carrier lock occurred at second 14 of 'Synthetic Dawn'. I tested this with a vinyl rip fed into the Falcon mic input. Carrier lock occurred at second 14 of 'Synthetic Dawn'. -- Hana Stewart | hstewart@mit.edu PGP Key fingerprint: A5DC 1DAA 2358 EDA1 "Keep the channels open."