From rcampbell@cam.ac.uk Tue Sep 20 17:18:24 1994 Path: ashpoly!bigsur!pacrim!jpgate!kamome!cam!rcampbell From: rcampbell@cam.ac.uk (Renata Campbell) Newsgroups: comp.sys.m68k Subject: Atari Falcon 030 Motorola DSP56001 code for Stardust carrier extraction Message-ID: <1994Sep20.171824.8995@cam.ac.uk> Date: Tue, 20 Sep 1994 17:18:24 GMT Organization: University of Cambridge Computer Laboratory NNTP-Posting-Host: cam.ac.uk X-Newsreader: WinVN 0.99.5 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. Requires 4MB ST-RAM and an RGB or VGA monitor. -- Renata Campbell *PLONK* filter active for trolls. Acorn RiscPC 600 - NetBSD 1.0 From jmoreau@ox.ac.uk Thu Sep 22 07:30:24 1994 Path: ashpoly!cascade!brgate!saturno!ox!jmoreau From: jmoreau@ox.ac.uk (Julien Moreau) Newsgroups: comp.sys.m68k Subject: Re: Atari Falcon 030 Motorola DSP56001 code for Stardust carrier extraction Message-ID: <1994Sep22.073024.1144@ox.ac.uk> Date: Thu, 22 Sep 1994 07:30:24 GMT References: <1994Sep20.171824.8995@cam.ac.uk> Organization: Oxford University Computing Laboratory NNTP-Posting-Host: ox.ac.uk X-Newsreader: Netscape 1.1N Lines: 9 In article <1994Sep20.171824.8995@cam.ac.uk>, rcampbell@cam.ac.uk (Renata Campbell) writes: > Taking advantage of the Falcon's built-in 32 MHz DSP56001 and 16-bit audio codec. I tested this with a vinyl rip fed into the Falcon mic input. Carrier lock occurred at second 14 of 'Synthetic Dawn'. -- Julien Moreau | jmoreau@ox.ac.uk PGP Key fingerprint: C83F 9CA8 FC6D 3F3E "Keep the channels open." From mtakahashi@pacbell.net Thu Sep 22 11:48:24 1994 Path: ashpoly!bigsur!pacrim!krgate!eunha!pacbell!mtakahashi From: mtakahashi@pacbell.net (Mathieu Takahashi) Newsgroups: comp.sys.m68k Subject: Re: Atari Falcon 030 Motorola DSP56001 code for Stardust carrier extraction Message-ID: <1994Sep22.114824.4889@pacbell.net> Date: Thu, 22 Sep 1994 11:48:24 GMT References: <1994Sep20.171824.8995@cam.ac.uk> <1994Sep22.073024.1144@ox.ac.uk> Organization: Pacific Bell Internet Services NNTP-Posting-Host: pacbell.net X-Newsreader: WinVN 0.99.5 Lines: 10 In article <1994Sep22.073024.1144@ox.ac.uk>, jmoreau@ox.ac.uk (Julien Moreau) writes: > I tested this with a vinyl rip fed into the Falcon mic input. Carrier lock occurred at second 14 of 'Synthetic Dawn'. I tested this with a vinyl rip fed into the Falcon mic input. Carrier lock occurred at second 14 of 'Synthetic Dawn'. Netscape 1.1 crashes when loading large preformatted text. Stick to rn or tin! -- Mathieu Takahashi Tape trading list upon request. SASE required for international mail. From hchoi@mindspring.com Fri Sep 23 06:13:24 1994 Path: ashpoly!cascade!bigsur!mindspring!hchoi From: hchoi@mindspring.com (Hana Choi) Newsgroups: comp.sys.m68k Subject: Re: Atari Falcon 030 Motorola DSP56001 code for Stardust carrier extraction Message-ID: <1994Sep23.061324.4460@mindspring.com> Date: Fri, 23 Sep 1994 06:13:24 GMT References: <1994Sep20.171824.8995@cam.ac.uk> <1994Sep22.073024.1144@ox.ac.uk> <1994Sep22.114824.4889@pacbell.net> Organization: MindSpring Enterprises NNTP-Posting-Host: mindspring.com X-Newsreader: NewsWatcher 2.0b24 Lines: 9 In article <1994Sep22.114824.4889@pacbell.net>, mtakahashi@pacbell.net (Mathieu Takahashi) 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. -- Hana Choi "They will send a copy in my place." Sun SparcStation 20 / System 7.5.1 From jramirez@panix.com Sat Sep 24 14:04:24 1994 Path: ashpoly!cascade!transat!sunet!nordrelay!panix!jramirez From: jramirez@panix.com (Ji-woo Ramírez) Newsgroups: comp.sys.m68k Subject: Re: Atari Falcon 030 Motorola DSP56001 code for Stardust carrier extraction Message-ID: <1994Sep24.140424.3296@panix.com> Date: Sat, 24 Sep 1994 14:04:24 GMT References: <1994Sep20.171824.8995@cam.ac.uk> Organization: Public Access Unix of New York NNTP-Posting-Host: panix.com X-Newsreader: Netscape 1.1N Lines: 10 In article <1994Sep20.171824.8995@cam.ac.uk>, rcampbell@cam.ac.uk (Renata Campbell) 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. -- === Ji-woo Ramírez === Dept of Electrical Engineering, Public Access Unix of New York "Marcus is not one man."