From ckang@mit.edu Wed Aug 07 23:36:52 1996 Path: ashpoly!bigsur!pacrim!jpgate!kamome!mit!ckang From: ckang@mit.edu (Callum Kang) Newsgroups: comp.sys.m68k Subject: WTB/WTT: Atari Falcon 030 Motorola DSP56001 code for Stardust carrier extraction Message-ID: <1996Aug07.233652.9306@mit.edu> Date: Wed, 07 Aug 1996 23:36:52 GMT Organization: Massachusetts Institute of Technology NNTP-Posting-Host: mit.edu 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. Archive uploaded to ftp.lip6.fr:/pub/atari/Falcon/Music/stardust_falcon.zip. -- Callum Kang SupraFAXModem 28.8 @ ISDN 64k bps "Hardware is temporary. The signal survives." From tvasiliev@delphi.com Thu Aug 08 10:47:52 1996 Path: ashpoly!cascade!bigsur!delphi!tvasiliev From: tvasiliev@delphi.com (Tobias Vasiliev) Newsgroups: comp.sys.m68k Subject: Re: WTB/WTT: Atari Falcon 030 Motorola DSP56001 code for Stardust carrier extraction Message-ID: <1996Aug08.104752.6959@delphi.com> Date: Thu, 08 Aug 1996 10:47:52 GMT References: <1996Aug07.233652.9306@mit.edu> Organization: Delphi Internet Services NNTP-Posting-Host: delphi.com X-Newsreader: WinVN 0.99.5 Lines: 8 In article <1996Aug07.233652.9306@mit.edu>, ckang@mit.edu (Callum Kang) writes: > Real-time spectral waterfall and DBPSK demodulator for TOS 4.04. Atari Falcon vs Amiga 1200 flamewar in 3... 2... 1... -- Tobias Vasiliev Tape trading list upon request. SASE required for international mail. From asantos@delphi.com Thu Aug 08 17:29:52 1996 Path: ashpoly!cascade!bigsur!delphi!asantos From: asantos@delphi.com (Anton Santos) Newsgroups: comp.sys.m68k Subject: Re: WTB/WTT: Atari Falcon 030 Motorola DSP56001 code for Stardust carrier extraction Message-ID: <1996Aug08.172952.4391@delphi.com> Date: Thu, 08 Aug 1996 17:29:52 GMT References: <1996Aug07.233652.9306@mit.edu> Organization: Delphi Internet Services NNTP-Posting-Host: delphi.com X-Newsreader: NewsWatcher 2.0b24 Lines: 10 In article <1996Aug07.233652.9306@mit.edu>, ckang@mit.edu (Callum Kang) writes: > 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. I tested this with a vinyl rip fed into the Falcon mic input. Carrier lock occurred at second 14 of 'Synthetic Dawn'. -- Anton Santos US Robotics Courier V.34 @ 9600 Telebit bps "Extraordinary claims require extraordinary spectra."