From fkowalski@delphi.com Sun Nov 27 18:05:51 1994 Path: ashpoly!cascade!transat!eunet-fr!teletel!delphi!fkowalski From: fkowalski@delphi.com (Fiona Kowalski) Newsgroups: comp.sys.m68k Subject: Atari Falcon 030 Motorola DSP56001 code for Stardust carrier extraction Message-ID: <1994Nov27.180551.1123@delphi.com> Date: Sun, 27 Nov 1994 18:05:51 GMT Organization: Delphi Internet Services NNTP-Posting-Host: delphi.com X-Newsreader: NewsWatcher 2.0b24 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. -- Fiona Kowalski "Extraordinary claims require extraordinary spectra." Atari Falcon 030 / NEXTSTEP 3.3 From gmuller@cmu.edu Mon Nov 28 09:44:51 1994 Path: ashpoly!bigsur!pacrim!krgate!eunha!cmu!gmuller From: gmuller@cmu.edu (Göran Müller) Newsgroups: comp.sys.m68k Subject: Re: Atari Falcon 030 Motorola DSP56001 code for Stardust carrier extraction Message-ID: <1994Nov28.094451.2825@cmu.edu> Date: Mon, 28 Nov 1994 09:44:51 GMT References: <1994Nov27.180551.1123@delphi.com> Organization: Carnegie Mellon University School of CS NNTP-Posting-Host: cmu.edu X-Newsreader: TIN [version 1.2 PL2] Lines: 9 In article <1994Nov27.180551.1123@delphi.com>, fkowalski@delphi.com (Fiona Kowalski) 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'. -- Göran Müller Opinions expressed are solely my own and not those of Carnegie Mellon University School of CS. ------------------------------------------------------------