From jhughes@kiae.su Wed Oct 11 21:38:18 1995 Path: ashpoly!cascade!transat!ukc!fennimore!kiae!jhughes From: jhughes@kiae.su (Ji-woo Hughes) Newsgroups: comp.sys.m68k Subject: WTB/WTT: Real-time 14.2 Hz demodulation on Amiga Paula audio DMA Message-ID: <1995Oct11.213818.9858@kiae.su> Date: Wed, 11 Oct 1995 21:38:18 GMT Organization: Kurchatov Institute of Atomic Energy, Moscow NNTP-Posting-Host: kiae.su X-Newsreader: TIN [version 1.2 PL2] Lines: 11 Amiga audio hackers: you can demodulate the 14.2 Hz carrier in real time without bogging down the OS. When the carrier locks, the program flashes the Amiga power LED to indicate binary frame synchronization! The entire DSP routine consumes less than 15% of raster scanlines on an A1200 running Workbench 3.1. Source code and executable will be released on Aminet under mus/misc/stardust_amiga.lha next week. -- === Ji-woo Hughes === Dept of Electrical Engineering, Kurchatov Institute of Atomic Energy, Moscow "There are 14 nodes and only 10 countries. Count again." From kmoreno@illinois.edu Thu Oct 12 23:54:18 1995 Path: ashpoly!cascade!mxgate!coyoacan!illinois!kmoreno From: kmoreno@illinois.edu (Karen Moreno) Newsgroups: comp.sys.m68k Subject: Re: WTB/WTT: Real-time 14.2 Hz demodulation on Amiga Paula audio DMA Message-ID: <1995Oct12.235418.3038@illinois.edu> Date: Thu, 12 Oct 1995 23:54:18 GMT References: <1995Oct11.213818.9858@kiae.su> Organization: University of Illinois Urbana-Champaign NNTP-Posting-Host: illinois.edu X-Newsreader: Netscape 1.1N Lines: 9 In article <1995Oct11.213818.9858@kiae.su>, jhughes@kiae.su (Ji-woo Hughes) writes: > Amiga audio hackers: you can demodulate the 14.2 Hz carrier in real time without bogging down the OS. Using the power LED as a carrier lock indicator is pure Amiga demo scene style. Kudos! -- Karen Moreno "Do not worship the copy." Decstation 5000/200 / AmigaOS 3.1