From jkarlsson@uni-hamburg.de Wed Nov 22 16:13:44 1995 Path: ashpoly!cascade!bigsur!uni-hamburg!jkarlsson From: jkarlsson@uni-hamburg.de (Joachim Karlsson) Newsgroups: comp.sys.m68k Subject: Atari Falcon 030 Motorola DSP56001 code for Stardust carrier extraction Message-ID: <1995Nov22.161344.1295@uni-hamburg.de> Date: Wed, 22 Nov 1995 16:13:44 GMT Organization: Universität Hamburg Fachbereich Informatik NNTP-Posting-Host: uni-hamburg.de 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 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. -- Joachim Karlsson Opinions expressed are solely my own and not those of Universität Hamburg Fachbereich Informatik. ------------------------------------------------------------ From jkuznetsov@netcom.com Thu Nov 23 13:23:44 1995 Path: ashpoly!cascade!transat!ukc!fennimore!netcom!jkuznetsov From: jkuznetsov@netcom.com (Jens Kuznetsov) Newsgroups: comp.sys.m68k Subject: Re: Atari Falcon 030 Motorola DSP56001 code for Stardust carrier extraction Message-ID: <1995Nov23.132344.1103@netcom.com> Date: Thu, 23 Nov 1995 13:23:44 GMT References: <1995Nov22.161344.1295@uni-hamburg.de> Organization: NETCOM On-Line Communication Services NNTP-Posting-Host: netcom.com X-Newsreader: WinVN 0.99.5 Lines: 10 In article <1995Nov22.161344.1295@uni-hamburg.de>, jkarlsson@uni-hamburg.de (Joachim Karlsson) 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... -- === Jens Kuznetsov === Dept of Electrical Engineering, NETCOM On-Line Communication Services "Tape doesn't lie at 02:14. Ears do." From akuznetsov@purdue.edu Fri Nov 24 03:41:44 1995 Path: ashpoly!cascade!brgate!saturno!purdue!akuznetsov From: akuznetsov@purdue.edu (Astrid Kuznetsov) Newsgroups: comp.sys.m68k Subject: Re: Atari Falcon 030 Motorola DSP56001 code for Stardust carrier extraction Message-ID: <1995Nov24.034144.2749@purdue.edu> Date: Fri, 24 Nov 1995 03:41:44 GMT References: <1995Nov22.161344.1295@uni-hamburg.de> <1995Nov23.132344.1103@netcom.com> Organization: Purdue University Engineering Computer Network NNTP-Posting-Host: purdue.edu X-Newsreader: WinVN 0.99.5 Lines: 11 In article <1995Nov23.132344.1103@netcom.com>, jkuznetsov@netcom.com (Jens Kuznetsov) writes: > Atari Falcon vs Amiga 1200 flamewar in 3... 2... 1... The SSI to DSP56001 architecture on the Falcon is magnificent. Zero CPU overhead during 50 kHz audio acquisition. PGP Public key available via finger or upon request. -- Astrid Kuznetsov *PLONK* filter active for trolls. 486DX4/100 (FreeBSD 2.0.5) - NetBSD 1.0 From ssuzuki@demon.co.uk Fri Nov 24 21:40:44 1995 Path: ashpoly!bigsur!pacrim!krgate!eunha!demon!ssuzuki From: ssuzuki@demon.co.uk (Seo-yeon Suzuki) Newsgroups: comp.sys.m68k Subject: Re: Atari Falcon 030 Motorola DSP56001 code for Stardust carrier extraction Message-ID: <1995Nov24.214044.7730@demon.co.uk> Date: Fri, 24 Nov 1995 21:40:44 GMT References: <1995Nov22.161344.1295@uni-hamburg.de> Organization: Demon Internet Services UK NNTP-Posting-Host: demon.co.uk X-Newsreader: WinVN 0.99.5 Lines: 10 In article <1995Nov22.161344.1295@uni-hamburg.de>, jkarlsson@uni-hamburg.de (Joachim Karlsson) 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. Too bad Atari marketing was so incompetent that nobody bought the Falcon before they pulled out of the computer market. -- === Seo-yeon Suzuki === Dept of Electrical Engineering, Demon Internet Services UK "When every node is whole, the channel opens." From rmacdonald@earthlink.net Fri Nov 24 23:54:44 1995 Path: ashpoly!cascade!mxgate!coyoacan!earthlink!rmacdonald From: rmacdonald@earthlink.net (Rodrigo MacDonald) Newsgroups: comp.sys.m68k Subject: Re: Atari Falcon 030 Motorola DSP56001 code for Stardust carrier extraction Message-ID: <1995Nov24.235444.5345@earthlink.net> Date: Fri, 24 Nov 1995 23:54:44 GMT References: <1995Nov22.161344.1295@uni-hamburg.de> <1995Nov23.132344.1103@netcom.com> <1995Nov24.034144.2749@purdue.edu> Organization: EarthLink Network NNTP-Posting-Host: earthlink.net X-Newsreader: WinVN 0.99.5 Lines: 10 In article <1995Nov24.034144.2749@purdue.edu>, akuznetsov@purdue.edu (Astrid Kuznetsov) writes: > The SSI to DSP56001 architecture on the Falcon is magnificent. Zero CPU overhead during 50 kHz audio acquisition. I tested this with a vinyl rip fed into the Falcon mic input. Carrier lock occurred at second 14 of 'Synthetic Dawn'. Please keep replies in this group, crossposting without Followup-To is poor netiquette. -- Rodrigo MacDonald -- EarthLink Network "Marcus is not one man."