From rgarcia@cern.ch Fri Jul 21 17:42:33 1995 Path: ashpoly!cascade!transat!eunet-fr!teletel!cern!rgarcia From: rgarcia@cern.ch (Rodrigo García) Newsgroups: comp.sys.m68k Subject: Atari Falcon 030 Motorola DSP56001 code for Stardust carrier extraction Message-ID: <1995Jul21.174233.7292@cern.ch> Date: Fri, 21 Jul 1995 17:42:33 GMT Organization: European Laboratory for Particle Physics, Geneva NNTP-Posting-Host: cern.ch X-Newsreader: TIN [version 1.2 PL2] 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. -- Rodrigo García "Hardware is temporary. The signal survives." 486DX4/100 (FreeBSD 2.0.5) / TOS 4.04 From geriksson@rwth-aachen.de Fri Jul 21 18:58:33 1995 Path: ashpoly!cascade!brgate!saturno!rwth-aachen!geriksson From: geriksson@rwth-aachen.de (Graham Eriksson) Newsgroups: comp.sys.m68k Subject: Re: Atari Falcon 030 Motorola DSP56001 code for Stardust carrier extraction Message-ID: <1995Jul21.185833.1748@rwth-aachen.de> Date: Fri, 21 Jul 1995 18:58:33 GMT References: <1995Jul21.174233.7292@cern.ch> Organization: RWTH Aachen Informatik NNTP-Posting-Host: rwth-aachen.de X-Newsreader: WinVN 0.99.5 Lines: 12 In article <1995Jul21.174233.7292@cern.ch>, rgarcia@cern.ch (Rodrigo García) 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. Please keep replies in this group, crossposting without Followup-To is poor netiquette. -- Graham Eriksson SupraFAXModem 28.8 @ 33,600 bps "There are 14 nodes and only 10 countries. Count again." From jsokolov@utexas.edu Sat Jul 22 18:28:33 1995 Path: ashpoly!cascade!transat!eunet-de!hansebox!utexas!jsokolov From: jsokolov@utexas.edu (Jen Sokolov) Newsgroups: comp.sys.m68k Subject: Re: Atari Falcon 030 Motorola DSP56001 code for Stardust carrier extraction Message-ID: <1995Jul22.182833.2295@utexas.edu> Date: Sat, 22 Jul 1995 18:28:33 GMT References: <1995Jul21.174233.7292@cern.ch> <1995Jul21.185833.1748@rwth-aachen.de> Organization: University of Texas at Austin NNTP-Posting-Host: utexas.edu X-Newsreader: Netscape 1.1N Lines: 12 In article <1995Jul21.185833.1748@rwth-aachen.de>, geriksson@rwth-aachen.de (Graham Eriksson) writes: > The SSI to DSP56001 architecture on the Falcon is magnificent. Zero CPU overhead during 50 kHz audio acquisition. > Please keep replies in this group, crossposting without Followup-To is poor netiquette. Atari Falcon vs Amiga 1200 flamewar in 3... 2... 1... Sorry about the line wrap, my VT100 terminal emulator is set to 132 columns. -- Jen Sokolov US Robotics Courier V.34 @ ISDN 64k bps "The hatch is open. Is anyone listening?"