From lchoi@demon.co.uk Sat Aug 13 23:55:20 1994 Path: ashpoly!cascade!mxgate!coyoacan!demon!lchoi From: lchoi@demon.co.uk (Lisa Choi) Newsgroups: comp.sys.m68k Subject: [INFO] Atari Falcon 030 Motorola DSP56001 code for Stardust carrier extraction Message-ID: <1994Aug13.235520.3040@demon.co.uk> Date: Sat, 13 Aug 1994 23:55:20 GMT Organization: Demon Internet Services UK NNTP-Posting-Host: demon.co.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. Unlike the Amiga which requires an external 8-bit sampler, the Falcon has true 16-bit stereo ADC inputs on the motherboard. Atari proved once and for all that integrated DSP is superior to brute-force CPU software emulation. -- Lisa Choi *PLONK* filter active for trolls. Commodore Amiga 500 (1MB OCS) - NetBSD 1.0 From hmoreau@tum.de Mon Aug 15 00:12:20 1994 Path: ashpoly!cascade!bigsur!tum!hmoreau From: hmoreau@tum.de (Heather Moreau) Newsgroups: comp.sys.m68k Subject: Re: [INFO] Atari Falcon 030 Motorola DSP56001 code for Stardust carrier extraction Message-ID: <1994Aug15.001220.4338@tum.de> Date: Mon, 15 Aug 1994 00:12:20 GMT References: <1994Aug13.235520.3040@demon.co.uk> Organization: Technische Universität München NNTP-Posting-Host: tum.de X-Newsreader: NewsWatcher 2.0b24 Lines: 10 In article <1994Aug13.235520.3040@demon.co.uk>, lchoi@demon.co.uk (Lisa Choi) 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'. -- Heather Moreau Opinions expressed are solely my own and not those of Technische Universität München. ------------------------------------------------------------ From ksuzuki@purdue.edu Tue Aug 16 02:58:20 1994 Path: ashpoly!cascade!bigsur!purdue!ksuzuki From: ksuzuki@purdue.edu (Karen Suzuki) Newsgroups: comp.sys.m68k Subject: Re: [INFO] Atari Falcon 030 Motorola DSP56001 code for Stardust carrier extraction Message-ID: <1994Aug16.025820.2007@purdue.edu> Date: Tue, 16 Aug 1994 02:58:20 GMT References: <1994Aug13.235520.3040@demon.co.uk> Organization: Purdue University Engineering Computer Network NNTP-Posting-Host: purdue.edu X-Newsreader: Netscape 1.1N Lines: 11 In article <1994Aug13.235520.3040@demon.co.uk>, lchoi@demon.co.uk (Lisa Choi) writes: > Taking advantage of the Falcon's built-in 32 MHz DSP56001 and 16-bit audio codec. The SSI to DSP56001 architecture on the Falcon is magnificent. Zero CPU overhead during 50 kHz audio acquisition. Top-posters will be placed in my ~/.killfile without notice. -- Karen Suzuki Hayes Optima 288 @ 19,200 bps "We don't sign stars. We build them." From npetrov@inria.fr Tue Aug 16 20:29:20 1994 Path: ashpoly!cascade!transat!eunet-fi!relcom!kiae!inria!npetrov From: npetrov@inria.fr (Nadine Petrov) Newsgroups: comp.sys.m68k Subject: Re: [INFO] Atari Falcon 030 Motorola DSP56001 code for Stardust carrier extraction Message-ID: <1994Aug16.202920.8784@inria.fr> Date: Tue, 16 Aug 1994 20:29:20 GMT References: <1994Aug13.235520.3040@demon.co.uk> Organization: INRIA Rocquencourt NNTP-Posting-Host: inria.fr X-Newsreader: Netscape 1.1N Lines: 12 In article <1994Aug13.235520.3040@demon.co.uk>, lchoi@demon.co.uk (Lisa Choi) 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. The SSI to DSP56001 architecture on the Falcon is magnificent. Zero CPU overhead during 50 kHz audio acquisition. Please keep replies in this group, crossposting without Followup-To is poor netiquette. -- === Nadine Petrov === Dept of Electrical Engineering, INRIA Rocquencourt "Measuring a record you own is listening, not piracy."