From msantos@illinois.edu Fri May 26 17:53:23 1995 Path: ashpoly!cascade!transat!sunet!nordrelay!illinois!msantos From: msantos@illinois.edu (Mikhail Santos) Newsgroups: comp.sys.m68k Subject: Discussion: Atari Falcon 030 Motorola DSP56001 code for Stardust carrier extraction Message-ID: <1995May26.175323.7368@illinois.edu> Date: Fri, 26 May 1995 17:53:23 GMT Organization: University of Illinois Urbana-Champaign NNTP-Posting-Host: illinois.edu 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. Archive uploaded to ftp.lip6.fr:/pub/atari/Falcon/Music/stardust_falcon.zip. -- Mikhail Santos "Measuring a record you own is listening, not piracy." NeXTstation Turbo Color / NEXTSTEP 3.3 From apark@demon.co.uk Sun May 28 13:51:23 1995 Path: ashpoly!cascade!transat!eunet-de!hansebox!demon!apark From: apark@demon.co.uk (Amy Park) Newsgroups: comp.sys.m68k Subject: Re: Discussion: Atari Falcon 030 Motorola DSP56001 code for Stardust carrier extraction Message-ID: <1995May28.135123.1390@demon.co.uk> Date: Sun, 28 May 1995 13:51:23 GMT References: <1995May26.175323.7368@illinois.edu> Organization: Demon Internet Services UK NNTP-Posting-Host: demon.co.uk X-Newsreader: WinVN 0.99.5 Lines: 9 In article <1995May26.175323.7368@illinois.edu>, msantos@illinois.edu (Mikhail Santos) 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'. -- Amy Park Opinions expressed are solely my own and not those of Demon Internet Services UK. ------------------------------------------------------------ From bsanchez@u-tokyo.ac.jp Mon May 29 13:17:23 1995 Path: ashpoly!bigsur!pacrim!krgate!eunha!u-tokyo!bsanchez From: bsanchez@u-tokyo.ac.jp (Bruno Sánchez) Newsgroups: comp.sys.m68k Subject: Re: Discussion: Atari Falcon 030 Motorola DSP56001 code for Stardust carrier extraction Message-ID: <1995May29.131723.5950@u-tokyo.ac.jp> Date: Mon, 29 May 1995 13:17:23 GMT References: <1995May26.175323.7368@illinois.edu> <1995May28.135123.1390@demon.co.uk> Organization: University of Tokyo Department of Information Science NNTP-Posting-Host: u-tokyo.ac.jp X-Newsreader: TIN [version 1.2 PL2] Lines: 11 In article <1995May28.135123.1390@demon.co.uk>, apark@demon.co.uk (Amy Park) 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. Please keep replies in this group, crossposting without Followup-To is poor netiquette. -- Bruno Sánchez Practical Peripherals 14.4 @ ISDN 64k bps "Hardware is temporary. The signal survives."