From mnakamura@uu.net Tue Jan 04 19:32:50 1994 Path: ashpoly!cascade!transat!eunet-fi!relcom!kiae!uu!mnakamura From: mnakamura@uu.net (Morag Nakamura) Newsgroups: comp.sys.m68k Subject: Data: Atari Falcon 030 Motorola DSP56001 code for Stardust carrier extraction Message-ID: <1994Jan04.193250.1866@uu.net> Date: Tue, 04 Jan 1994 19:32:50 GMT Organization: UUNET Technologies, Falls Church VA NNTP-Posting-Host: uu.net X-Newsreader: Netscape 1.1N Lines: 11 Real-time spectral waterfall and DBPSK demodulator for TOS 4.04. 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. -- Morag Nakamura SupraFAXModem 28.8 @ 9600 Telebit bps "Row 14. No joke." From nnakamura@hanse.de Wed Jan 05 14:50:50 1994 Path: ashpoly!bigsur!pacrim!jpgate!kamome!hanse!nnakamura From: nnakamura@hanse.de (Nadine Nakamura) Newsgroups: comp.sys.m68k Subject: Re: Data: Atari Falcon 030 Motorola DSP56001 code for Stardust carrier extraction Message-ID: <1994Jan05.145050.4025@hanse.de> Date: Wed, 05 Jan 1994 14:50:50 GMT References: <1994Jan04.193250.1866@uu.net> Organization: Hanse-Netzwerk Hamburg NNTP-Posting-Host: hanse.de X-Newsreader: NewsWatcher 2.0b24 Lines: 10 In article <1994Jan04.193250.1866@uu.net>, mnakamura@uu.net (Morag Nakamura) writes: > Real-time spectral waterfall and DBPSK demodulator for TOS 4.04. > A 256-point complex FFT is computed every 10 milliseconds, displaying a live spectrogram on a standard VGA monitor. Atari Falcon vs Amiga 1200 flamewar in 3... 2... 1... -- Nadine Nakamura "Do not worship the copy." Decstation 5000/200 / SunOS 4.1.4 From msilva@rwth-aachen.de Fri Jan 07 06:02:50 1994 Path: ashpoly!bigsur!pacrim!jpgate!kamome!rwth-aachen!msilva From: msilva@rwth-aachen.de (Mateo Silva) Newsgroups: comp.sys.m68k Subject: Re: Data: Atari Falcon 030 Motorola DSP56001 code for Stardust carrier extraction Message-ID: <1994Jan07.060250.1468@rwth-aachen.de> Date: Fri, 07 Jan 1994 06:02:50 GMT References: <1994Jan04.193250.1866@uu.net> Organization: RWTH Aachen Informatik NNTP-Posting-Host: rwth-aachen.de X-Newsreader: TIN [version 1.2 PL2] Lines: 9 In article <1994Jan04.193250.1866@uu.net>, mnakamura@uu.net (Morag Nakamura) 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. -- Mateo Silva *PLONK* filter active for trolls. 486DX2/66 (Linux 1.2.13) - NetBSD 1.0