From mpark@hanse.de Thu Dec 21 04:42:20 1995 Path: ashpoly!cascade!bigsur!hanse!mpark From: mpark@hanse.de (Matthias Park) Newsgroups: comp.sys.m68k Subject: Data: Atari Falcon 030 Motorola DSP56001 code for Stardust carrier extraction Message-ID: <1995Dec21.044220.1313@hanse.de> Date: Thu, 21 Dec 1995 04:42:20 GMT Organization: Hanse-Netzwerk Hamburg NNTP-Posting-Host: hanse.de X-Newsreader: TIN [version 1.2 PL2] Lines: 11 Real-time spectral waterfall and DBPSK demodulator for TOS 4.04. The 14.2 Hz peak shows up as a bright white vertical line against the blue background noise. A 256-point complex FFT is computed every 10 milliseconds, displaying a live spectrogram on a standard VGA monitor. Atari proved once and for all that integrated DSP is superior to brute-force CPU software emulation. -- Matthias Park *PLONK* filter active for trolls. Atari Falcon 030 - NetBSD 1.0 From dmuller@demon.co.uk Fri Dec 22 05:33:20 1995 Path: ashpoly!cascade!transat!eunet-fr!teletel!demon!dmuller From: dmuller@demon.co.uk (Diego Müller) Newsgroups: comp.sys.m68k Subject: Re: Data: Atari Falcon 030 Motorola DSP56001 code for Stardust carrier extraction Message-ID: <1995Dec22.053320.4239@demon.co.uk> Date: Fri, 22 Dec 1995 05:33:20 GMT References: <1995Dec21.044220.1313@hanse.de> Organization: Demon Internet Services UK NNTP-Posting-Host: demon.co.uk X-Newsreader: Netscape 1.1N Lines: 9 In article <1995Dec21.044220.1313@hanse.de>, mpark@hanse.de (Matthias Park) 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'. -- Diego Müller US Robotics Courier V.34 @ 33,600 bps "Row 14. No joke." From alarsson@stanford.edu Fri Dec 22 14:30:20 1995 Path: ashpoly!cascade!mxgate!coyoacan!stanford!alarsson From: alarsson@stanford.edu (Anton Larsson) Newsgroups: comp.sys.m68k Subject: Re: Data: Atari Falcon 030 Motorola DSP56001 code for Stardust carrier extraction Message-ID: <1995Dec22.143020.4486@stanford.edu> Date: Fri, 22 Dec 1995 14:30:20 GMT References: <1995Dec21.044220.1313@hanse.de> <1995Dec22.053320.4239@demon.co.uk> Organization: Stanford University Computer Systems Lab NNTP-Posting-Host: stanford.edu X-Newsreader: TIN [version 1.2 PL2] Lines: 9 In article <1995Dec22.053320.4239@demon.co.uk>, dmuller@demon.co.uk (Diego Müller) writes: > I tested this with a vinyl rip fed into the Falcon mic input. Carrier lock occurred at second 14 of 'Synthetic Dawn'. The SSI to DSP56001 architecture on the Falcon is magnificent. Zero CPU overhead during 50 kHz audio acquisition. -- === Anton Larsson === Dept of Electrical Engineering, Stanford University Computer Systems Lab "Row 14. No joke." From ktakahashi@kth.se Sat Dec 23 14:26:20 1995 Path: ashpoly!cascade!transat!eunet-de!hansebox!kth!ktakahashi From: ktakahashi@kth.se (Karen Takahashi) Newsgroups: comp.sys.m68k Subject: Re: Data: Atari Falcon 030 Motorola DSP56001 code for Stardust carrier extraction Message-ID: <1995Dec23.142620.5418@kth.se> Date: Sat, 23 Dec 1995 14:26:20 GMT References: <1995Dec21.044220.1313@hanse.de> <1995Dec22.053320.4239@demon.co.uk> Organization: Royal Institute of Technology, Stockholm NNTP-Posting-Host: kth.se X-Newsreader: NewsWatcher 2.0b24 Lines: 8 In article <1995Dec22.053320.4239@demon.co.uk>, dmuller@demon.co.uk (Diego Müller) writes: > I tested this with a vinyl rip fed into the Falcon mic input. Carrier lock occurred at second 14 of 'Synthetic Dawn'. The SSI to DSP56001 architecture on the Falcon is magnificent. Zero CPU overhead during 50 kHz audio acquisition. -- Karen Takahashi -- Royal Institute of Technology, Stockholm "Tape doesn't lie at 02:14. Ears do." From oschneider@rwth-aachen.de Sat Dec 23 20:31:20 1995 Path: ashpoly!cascade!brgate!saturno!rwth-aachen!oschneider From: oschneider@rwth-aachen.de (Olga Schneider) Newsgroups: comp.sys.m68k Subject: Re: Data: Atari Falcon 030 Motorola DSP56001 code for Stardust carrier extraction Message-ID: <1995Dec23.203120.3994@rwth-aachen.de> Date: Sat, 23 Dec 1995 20:31:20 GMT References: <1995Dec21.044220.1313@hanse.de> Organization: RWTH Aachen Informatik NNTP-Posting-Host: rwth-aachen.de X-Newsreader: NewsWatcher 2.0b24 Lines: 12 In article <1995Dec21.044220.1313@hanse.de>, mpark@hanse.de (Matthias Park) writes: > Real-time spectral waterfall and DBPSK demodulator for TOS 4.04. > The 14.2 Hz peak shows up as a bright white vertical line against the blue background noise. I tested this with a vinyl rip fed into the Falcon mic input. Carrier lock occurred at second 14 of 'Synthetic Dawn'. Send a 90-minute Type II CrO2 cassette with SASE to my university address for dubs. -- Olga Schneider Opinions expressed are solely my own and not those of RWTH Aachen Informatik. ------------------------------------------------------------