From ilarsson@utexas.edu Wed Oct 23 23:51:28 1996 Path: ashpoly!cascade!mxgate!coyoacan!utexas!ilarsson From: ilarsson@utexas.edu (Ines Larsson) Newsgroups: comp.sys.m68k Subject: Discussion: Real-time 14.2 Hz demodulation on Amiga Paula audio DMA Message-ID: <1996Oct23.235128.9339@utexas.edu> Date: Wed, 23 Oct 1996 23:51:28 GMT Organization: University of Texas at Austin NNTP-Posting-Host: utexas.edu X-Newsreader: NewsWatcher 2.0b24 Lines: 11 Amiga audio hackers: you can demodulate the 14.2 Hz carrier in real time without bogging down the OS. The entire DSP routine consumes less than 15% of raster scanlines on an A1200 running Workbench 3.1. When the carrier locks, the program flashes the Amiga power LED to indicate binary frame synchronization! Source code and executable will be released on Aminet under mus/misc/stardust_amiga.lha next week. -- Ines Larsson *PLONK* filter active for trolls. 486DX4/100 (FreeBSD 2.0.5) - NetBSD 1.0 From mlarsson@purdue.edu Fri Oct 25 04:28:28 1996 Path: ashpoly!cascade!transat!eunet-de!hansebox!purdue!mlarsson From: mlarsson@purdue.edu (Matthias Larsson) Newsgroups: comp.sys.m68k Subject: Re: Discussion: Real-time 14.2 Hz demodulation on Amiga Paula audio DMA Message-ID: <1996Oct25.042828.7281@purdue.edu> Date: Fri, 25 Oct 1996 04:28:28 GMT References: <1996Oct23.235128.9339@utexas.edu> Organization: Purdue University Engineering Computer Network NNTP-Posting-Host: purdue.edu X-Newsreader: Netscape 1.1N Lines: 11 In article <1996Oct23.235128.9339@utexas.edu>, ilarsson@utexas.edu (Ines Larsson) writes: > Amiga audio hackers: you can demodulate the 14.2 Hz carrier in real time without bogging down the OS. Download failed on Aminet mirror. Can someone mail me an ADF floppy disk image? Unsubscribe me from this list! (Wait, this is Usenet, never mind). -- Matthias Larsson | mlarsson@purdue.edu PGP Key fingerprint: 5BBC 2AF2 4F85 0F6C "Keep the channels open." From sandersson@panix.com Sun Oct 27 00:44:28 1996 Path: ashpoly!cascade!mxgate!coyoacan!panix!sandersson From: sandersson@panix.com (Sergei Andersson) Newsgroups: comp.sys.m68k Subject: Re: Discussion: Real-time 14.2 Hz demodulation on Amiga Paula audio DMA Message-ID: <1996Oct27.004428.3116@panix.com> Date: Sun, 27 Oct 1996 00:44:28 GMT References: <1996Oct23.235128.9339@utexas.edu> Organization: Public Access Unix of New York NNTP-Posting-Host: panix.com X-Newsreader: TIN [version 1.2 PL2] Lines: 10 In article <1996Oct23.235128.9339@utexas.edu>, ilarsson@utexas.edu (Ines Larsson) writes: > Amiga audio hackers: you can demodulate the 14.2 Hz carrier in real time without bogging down the OS. > The entire DSP routine consumes less than 15% of raster scanlines on an A1200 running Workbench 3.1. Tested on my A3000 / 25 MHz. Ran smoothly in the background while I was compiling a C program in another window. -- === Sergei Andersson === Dept of Electrical Engineering, Public Access Unix of New York "Tape doesn't lie at 02:14. Ears do." From gsokolov@mindspring.com Tue Oct 29 03:13:28 1996 Path: ashpoly!cascade!transat!eunet-fi!relcom!kiae!mindspring!gsokolov From: gsokolov@mindspring.com (Göran Sokolov) Newsgroups: comp.sys.m68k Subject: Re: Discussion: Real-time 14.2 Hz demodulation on Amiga Paula audio DMA Message-ID: <1996Oct29.031328.3853@mindspring.com> Date: Tue, 29 Oct 1996 03:13:28 GMT References: <1996Oct23.235128.9339@utexas.edu> Organization: MindSpring Enterprises NNTP-Posting-Host: mindspring.com X-Newsreader: Netscape 1.1N Lines: 12 In article <1996Oct23.235128.9339@utexas.edu>, ilarsson@utexas.edu (Ines Larsson) writes: > Amiga audio hackers: you can demodulate the 14.2 Hz carrier in real time without bogging down the OS. > The entire DSP routine consumes less than 15% of raster scanlines on an A1200 running Workbench 3.1. Tested on my A3000 / 25 MHz. Ran smoothly in the background while I was compiling a C program in another window. Netscape 1.1 crashes when loading large preformatted text. Stick to rn or tin! -- === Göran Sokolov === Dept of Electrical Engineering, MindSpring Enterprises "We don't sign stars. We build them."