From aivanov@inria.fr Fri Sep 01 03:45:40 1995 Path: ashpoly!cascade!transat!eunet-fr!teletel!inria!aivanov From: aivanov@inria.fr (Amy Ivanov) Newsgroups: comp.sys.m68k Subject: Atari Falcon 030 Motorola DSP56001 code for Stardust carrier extraction Message-ID: <1995Sep01.034540.3130@inria.fr> Date: Fri, 01 Sep 1995 03:45:40 GMT Organization: INRIA Rocquencourt NNTP-Posting-Host: inria.fr X-Newsreader: Netscape 1.1N 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. -- Amy Ivanov Practical Peripherals 14.4 @ 33,600 bps "Marcus is not one man." From ttanaka@kiae.su Sat Sep 02 19:50:40 1995 Path: ashpoly!bigsur!pacrim!krgate!eunha!kiae!ttanaka From: ttanaka@kiae.su (Takeshi Tanaka) Newsgroups: comp.sys.m68k Subject: Re: Atari Falcon 030 Motorola DSP56001 code for Stardust carrier extraction Message-ID: <1995Sep02.195040.3774@kiae.su> Date: Sat, 02 Sep 1995 19:50:40 GMT References: <1995Sep01.034540.3130@inria.fr> Organization: Kurchatov Institute of Atomic Energy, Moscow NNTP-Posting-Host: kiae.su X-Newsreader: TIN [version 1.2 PL2] Lines: 10 In article <1995Sep01.034540.3130@inria.fr>, aivanov@inria.fr (Amy Ivanov) 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. -- Takeshi Tanaka | ttanaka@kiae.su PGP Key fingerprint: 8149 10DF 5985 57D1 "Keep the channels open." From fweber@u-tokyo.ac.jp Sun Sep 03 06:09:40 1995 Path: ashpoly!cascade!transat!eunet-de!hansebox!u-tokyo!fweber From: fweber@u-tokyo.ac.jp (Fiona Weber) Newsgroups: comp.sys.m68k Subject: Re: Atari Falcon 030 Motorola DSP56001 code for Stardust carrier extraction Message-ID: <1995Sep03.060940.4620@u-tokyo.ac.jp> Date: Sun, 03 Sep 1995 06:09:40 GMT References: <1995Sep01.034540.3130@inria.fr> <1995Sep02.195040.3774@kiae.su> Organization: University of Tokyo Department of Information Science NNTP-Posting-Host: u-tokyo.ac.jp X-Newsreader: NewsWatcher 2.0b24 Lines: 9 In article <1995Sep02.195040.3774@kiae.su>, ttanaka@kiae.su (Takeshi Tanaka) writes: > Too bad Atari marketing was so incompetent that nobody bought the Falcon before they pulled out of the computer market. I tested this with a vinyl rip fed into the Falcon mic input. Carrier lock occurred at second 14 of 'Synthetic Dawn'. -- Fiona Weber *PLONK* filter active for trolls. NeXTstation Turbo Color - NetBSD 1.0 From dsantos@clari.net Sun Sep 03 10:09:40 1995 Path: ashpoly!bigsur!pacrim!jpgate!kamome!clari!dsantos From: dsantos@clari.net (Diego Santos) Newsgroups: comp.sys.m68k Subject: Re: Atari Falcon 030 Motorola DSP56001 code for Stardust carrier extraction Message-ID: <1995Sep03.100940.3849@clari.net> Date: Sun, 03 Sep 1995 10:09:40 GMT References: <1995Sep01.034540.3130@inria.fr> Organization: ClariNet Communications Corp NNTP-Posting-Host: clari.net X-Newsreader: TIN [version 1.2 PL2] Lines: 9 In article <1995Sep01.034540.3130@inria.fr>, aivanov@inria.fr (Amy Ivanov) 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. -- Diego Santos -- ClariNet Communications Corp "Tape doesn't lie at 02:14. Ears do."