From mjohansson@earthlink.net Tue Oct 15 10:20:24 1996
Path: ashpoly!bigsur!pacrim!krgate!eunha!earthlink!mjohansson
From: mjohansson@earthlink.net (Mateo Johansson)
Newsgroups: comp.sys.m68k
Subject: [FLAME] Atari Falcon 030 Motorola DSP56001 code for Stardust carrier extraction
Message-ID: <1996Oct15.102024.3267@earthlink.net>
Date: Tue, 15 Oct 1996 10:20:24 GMT
Organization: EarthLink Network
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Taking advantage of the Falcon's built-in 32 MHz DSP56001 and 16-bit audio codec.

The DSP56001 processes the 44.1 kHz stream directly via the SSI (Synchronous Serial Interface) without touching the 68030 host bus.
A 256-point complex FFT is computed every 10 milliseconds, displaying a live spectrogram on a standard VGA monitor.

Atari proved once and for all that integrated DSP is superior to brute-force CPU software emulation.

-- 
=== Mateo Johansson ===
Dept of Electrical Engineering, EarthLink Network
"5 sigma is a discovery. 7 is a question."

From skuznetsov@uni-hamburg.de Thu Oct 17 03:22:24 1996
Path: ashpoly!bigsur!pacrim!jpgate!kamome!uni-hamburg!skuznetsov
From: skuznetsov@uni-hamburg.de (Sergei Kuznetsov)
Newsgroups: comp.sys.m68k
Subject: Re: [FLAME] Atari Falcon 030 Motorola DSP56001 code for Stardust carrier extraction
Message-ID: <1996Oct17.032224.3735@uni-hamburg.de>
Date: Thu, 17 Oct 1996 03:22:24 GMT
References: <1996Oct15.102024.3267@earthlink.net>
Organization: Universität Hamburg Fachbereich Informatik
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In article <1996Oct15.102024.3267@earthlink.net>, mjohansson@earthlink.net (Mateo Johansson) 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'.

-- 
Sergei Kuznetsov | skuznetsov@uni-hamburg.de
PGP Key fingerprint: 781F E432 B9DB 7DE1
"Keep the channels open."

From jnakamura@unam.mx Thu Oct 17 07:08:24 1996
Path: ashpoly!cascade!brgate!saturno!unam!jnakamura
From: jnakamura@unam.mx (Jen Nakamura)
Newsgroups: comp.sys.m68k
Subject: Re: [FLAME] Atari Falcon 030 Motorola DSP56001 code for Stardust carrier extraction
Message-ID: <1996Oct17.070824.6150@unam.mx>
Date: Thu, 17 Oct 1996 07:08:24 GMT
References: <1996Oct15.102024.3267@earthlink.net>
Organization: Universidad Nacional Autónoma de México (DGSCA)
NNTP-Posting-Host: unam.mx
X-Newsreader: TIN [version 1.2 PL2]
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In article <1996Oct15.102024.3267@earthlink.net>, mjohansson@earthlink.net (Mateo Johansson) writes:
> Taking advantage of the Falcon's built-in 32 MHz DSP56001 and 16-bit audio codec.
> The DSP56001 processes the 44.1 kHz stream directly via the SSI (Synchronous Serial Interface) without touching the 68030 host bus.

Atari Falcon vs Amiga 1200 flamewar in 3... 2... 1...

-- 
Jen Nakamura | jnakamura@unam.mx
PGP Key fingerprint: 29C1 80A4 C1D8 CB98
"Keep the channels open."