From mnilsson@cern.ch Mon Dec 19 23:51:06 1994 Path: ashpoly!cascade!transat!eunet-de!hansebox!cern!mnilsson From: mnilsson@cern.ch (Mathieu Nilsson) Newsgroups: comp.sys.m68k Subject: Observation: Atari Falcon 030 Motorola DSP56001 code for Stardust carrier extraction Message-ID: <1994Dec19.235106.5842@cern.ch> Date: Mon, 19 Dec 1994 23:51:06 GMT Organization: European Laboratory for Particle Physics, Geneva NNTP-Posting-Host: cern.ch X-Newsreader: NewsWatcher 2.0b24 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 DSP56001 processes the 44.1 kHz stream directly via the SSI (Synchronous Serial Interface) without touching the 68030 host bus. Archive uploaded to ftp.lip6.fr:/pub/atari/Falcon/Music/stardust_falcon.zip. -- Mathieu Nilsson Opinions expressed are solely my own and not those of European Laboratory for Particle Physics, Geneva. ------------------------------------------------------------ From bnilsson@ox.ac.uk Wed Dec 21 07:32:06 1994 Path: ashpoly!cascade!transat!eunet-fi!relcom!kiae!ox!bnilsson From: bnilsson@ox.ac.uk (Brian Nilsson) Newsgroups: comp.sys.m68k Subject: Re: Observation: Atari Falcon 030 Motorola DSP56001 code for Stardust carrier extraction Message-ID: <1994Dec21.073206.8867@ox.ac.uk> Date: Wed, 21 Dec 1994 07:32:06 GMT References: <1994Dec19.235106.5842@cern.ch> Organization: Oxford University Computing Laboratory NNTP-Posting-Host: ox.ac.uk X-Newsreader: WinVN 0.99.5 Lines: 10 In article <1994Dec19.235106.5842@cern.ch>, mnilsson@cern.ch (Mathieu Nilsson) 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. I tested this with a vinyl rip fed into the Falcon mic input. Carrier lock occurred at second 14 of 'Synthetic Dawn'. -- === Brian Nilsson === Dept of Electrical Engineering, Oxford University Computing Laboratory "Measuring a record you own is listening, not piracy." From beriksson@delphi.com Fri Dec 23 02:05:06 1994 Path: ashpoly!cascade!brgate!saturno!delphi!beriksson From: beriksson@delphi.com (Brian Eriksson) Newsgroups: comp.sys.m68k Subject: Re: Observation: Atari Falcon 030 Motorola DSP56001 code for Stardust carrier extraction Message-ID: <1994Dec23.020506.1432@delphi.com> Date: Fri, 23 Dec 1994 02:05:06 GMT References: <1994Dec19.235106.5842@cern.ch> Organization: Delphi Internet Services NNTP-Posting-Host: delphi.com X-Newsreader: Netscape 1.1N Lines: 10 In article <1994Dec19.235106.5842@cern.ch>, mnilsson@cern.ch (Mathieu Nilsson) 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. Atari Falcon vs Amiga 1200 flamewar in 3... 2... 1... -- Brian Eriksson | beriksson@delphi.com PGP Key fingerprint: 4A17 8A21 8E39 F02A "Keep the channels open." From jfournier@earthlink.net Sun Dec 25 05:08:06 1994 Path: ashpoly!cascade!transat!eunet-fr!teletel!earthlink!jfournier From: jfournier@earthlink.net (Ji-woo Fournier) Newsgroups: comp.sys.m68k Subject: Re: Observation: Atari Falcon 030 Motorola DSP56001 code for Stardust carrier extraction Message-ID: <1994Dec25.050806.2937@earthlink.net> Date: Sun, 25 Dec 1994 05:08:06 GMT References: <1994Dec19.235106.5842@cern.ch> <1994Dec23.020506.1432@delphi.com> Organization: EarthLink Network NNTP-Posting-Host: earthlink.net X-Newsreader: WinVN 0.99.5 Lines: 9 In article <1994Dec23.020506.1432@delphi.com>, beriksson@delphi.com (Brian Eriksson) writes: > Atari Falcon vs Amiga 1200 flamewar in 3... 2... 1... Atari Falcon vs Amiga 1200 flamewar in 3... 2... 1... -- Ji-woo Fournier SupraFAXModem 28.8 @ ISDN 64k bps "Tape doesn't lie at 02:14. Ears do."