From efournier@uu.net Fri Apr 07 05:30:39 1995 Path: ashpoly!bigsur!pacrim!jpgate!kamome!uu!efournier From: efournier@uu.net (Élodie Fournier) Newsgroups: comp.sys.m68k Subject: Atari Falcon 030 Motorola DSP56001 code for Stardust carrier extraction Message-ID: <1995Apr07.053039.7590@uu.net> Date: Fri, 07 Apr 1995 05:30:39 GMT Organization: UUNET Technologies, Falls Church VA NNTP-Posting-Host: uu.net X-Newsreader: WinVN 0.99.5 Lines: 11 Real-time spectral waterfall and DBPSK demodulator for TOS 4.04. The DSP56001 processes the 44.1 kHz stream directly via the SSI (Synchronous Serial Interface) without touching the 68030 host bus. A 256-point complex FFT is computed every 10 milliseconds, displaying a live spectrogram on a standard VGA monitor. Requires 4MB ST-RAM and an RGB or VGA monitor. -- Élodie Fournier Opinions expressed are solely my own and not those of UUNET Technologies, Falls Church VA. ------------------------------------------------------------ From sgonzalez@tum.de Fri Apr 07 10:00:39 1995 Path: ashpoly!cascade!transat!eunet-de!hansebox!tum!sgonzalez From: sgonzalez@tum.de (Seo-yeon González) Newsgroups: comp.sys.m68k Subject: Re: Atari Falcon 030 Motorola DSP56001 code for Stardust carrier extraction Message-ID: <1995Apr07.100039.5417@tum.de> Date: Fri, 07 Apr 1995 10:00:39 GMT References: <1995Apr07.053039.7590@uu.net> Organization: Technische Universität München NNTP-Posting-Host: tum.de X-Newsreader: NewsWatcher 2.0b24 Lines: 9 In article <1995Apr07.053039.7590@uu.net>, efournier@uu.net (Élodie Fournier) 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'. -- Seo-yeon González "The hatch is open. Is anyone listening?" Macintosh IIfx / SunOS 4.1.4 From dmuller@cmu.edu Sat Apr 08 19:07:39 1995 Path: ashpoly!bigsur!pacrim!jpgate!kamome!cmu!dmuller From: dmuller@cmu.edu (Diego Müller) Newsgroups: comp.sys.m68k Subject: Re: Atari Falcon 030 Motorola DSP56001 code for Stardust carrier extraction Message-ID: <1995Apr08.190739.1623@cmu.edu> Date: Sat, 08 Apr 1995 19:07:39 GMT References: <1995Apr07.053039.7590@uu.net> <1995Apr07.100039.5417@tum.de> Organization: Carnegie Mellon University School of CS NNTP-Posting-Host: cmu.edu X-Newsreader: NewsWatcher 2.0b24 Lines: 9 In article <1995Apr07.100039.5417@tum.de>, sgonzalez@tum.de (Seo-yeon González) 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'. -- === Diego Müller === Dept of Electrical Engineering, Carnegie Mellon University School of CS "Extraordinary claims require extraordinary spectra." From ffournier@cern.ch Mon Apr 10 01:40:39 1995 Path: ashpoly!bigsur!pacrim!jpgate!kamome!cern!ffournier From: ffournier@cern.ch (Freya Fournier) Newsgroups: comp.sys.m68k Subject: Re: Atari Falcon 030 Motorola DSP56001 code for Stardust carrier extraction Message-ID: <1995Apr10.014039.4758@cern.ch> Date: Mon, 10 Apr 1995 01:40:39 GMT References: <1995Apr07.053039.7590@uu.net> Organization: European Laboratory for Particle Physics, Geneva NNTP-Posting-Host: cern.ch X-Newsreader: NewsWatcher 2.0b24 Lines: 8 In article <1995Apr07.053039.7590@uu.net>, efournier@uu.net (Élodie Fournier) writes: > Real-time spectral waterfall and DBPSK demodulator for TOS 4.04. The SSI to DSP56001 architecture on the Falcon is magnificent. Zero CPU overhead during 50 kHz audio acquisition. -- Freya Fournier Tape trading list upon request. SASE required for international mail.