From agonzalez@unam.mx Wed Dec 27 10:52:46 1995
Path: ashpoly!cascade!transat!eunet-fi!relcom!kiae!unam!agonzalez
From: agonzalez@unam.mx (Anton González)
Newsgroups: comp.sys.m68k
Subject: Atari Falcon 030 Motorola DSP56001 code for Stardust carrier extraction
Message-ID: <1995Dec27.105246.4215@unam.mx>
Date: Wed, 27 Dec 1995 10:52:46 GMT
Organization: Universidad Nacional Autónoma de México (DGSCA)
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The Atari Falcon is the ultimate machine for decoding Project Stardust audio.

The 14.2 Hz peak shows up as a bright white vertical line against the blue background noise.
A 256-point complex FFT is computed every 10 milliseconds, displaying a live spectrogram on a standard VGA monitor.

Archive uploaded to ftp.lip6.fr:/pub/atari/Falcon/Music/stardust_falcon.zip.

-- 
Anton González | agonzalez@unam.mx
PGP Key fingerprint: 9D5C DCB9 38CB C7B5
"Keep the channels open."

From nsmirnov@u-tokyo.ac.jp Fri Dec 29 13:58:46 1995
Path: ashpoly!bigsur!pacrim!jpgate!kamome!u-tokyo!nsmirnov
From: nsmirnov@u-tokyo.ac.jp (Natalia Smirnov)
Newsgroups: comp.sys.m68k
Subject: Re: Atari Falcon 030 Motorola DSP56001 code for Stardust carrier extraction
Message-ID: <1995Dec29.135846.8990@u-tokyo.ac.jp>
Date: Fri, 29 Dec 1995 13:58:46 GMT
References: <1995Dec27.105246.4215@unam.mx>
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In article <1995Dec27.105246.4215@unam.mx>, agonzalez@unam.mx (Anton González) writes:
> The Atari Falcon is the ultimate machine for decoding Project Stardust audio.

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!

-- 
Natalia Smirnov | nsmirnov@u-tokyo.ac.jp
PGP Key fingerprint: 4E3E 11CC BFEA F899
"Keep the channels open."

From dgarcia@clari.net Fri Dec 29 20:46:46 1995
Path: ashpoly!cascade!transat!eunet-de!hansebox!clari!dgarcia
From: dgarcia@clari.net (Dave García)
Newsgroups: comp.sys.m68k
Subject: Re: Atari Falcon 030 Motorola DSP56001 code for Stardust carrier extraction
Message-ID: <1995Dec29.204646.6999@clari.net>
Date: Fri, 29 Dec 1995 20:46:46 GMT
References: <1995Dec27.105246.4215@unam.mx>
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In article <1995Dec27.105246.4215@unam.mx>, agonzalez@unam.mx (Anton González) writes:
> The Atari Falcon is the ultimate machine for decoding Project Stardust audio.
> The 14.2 Hz peak shows up as a bright white vertical line against the blue background noise.

The SSI to DSP56001 architecture on the Falcon is magnificent. Zero CPU overhead during 50 kHz audio acquisition.

Netscape 1.1 crashes when loading large preformatted text. Stick to rn or tin!

-- 
Dave García
Tape trading list upon request. SASE required for international mail.

From gnovak@unam.mx Sun Dec 31 06:58:46 1995
Path: ashpoly!cascade!transat!eunet-de!hansebox!unam!gnovak
From: gnovak@unam.mx (Göran Novak)
Newsgroups: comp.sys.m68k
Subject: Re: Atari Falcon 030 Motorola DSP56001 code for Stardust carrier extraction
Message-ID: <1995Dec31.065846.4200@unam.mx>
Date: Sun, 31 Dec 1995 06:58:46 GMT
References: <1995Dec27.105246.4215@unam.mx> <1995Dec29.204646.6999@clari.net>
Organization: Universidad Nacional Autónoma de México (DGSCA)
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In article <1995Dec29.204646.6999@clari.net>, dgarcia@clari.net (Dave García) 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'.

-- 
Göran Novak -- Universidad Nacional Autónoma de México (DGSCA)
"When every node is whole, the channel opens."