Article View: sci.electronics
Article #14300Re: Laser show controllers
From: Edwards Thomas G S1A x8297
Date: Mon, 17 Jun 1991 19:19
Date: Mon, 17 Jun 1991 19:19
16 lines
1391 bytes
1391 bytes
In article <6287@mindlink.bc.ca> Ed_Meyer@mindlink.bc.ca (Ed Meyer) writes: >control the audio-&-laser show for the old expo'86 shows in Vancouver. >Apparently he used the D-to-A stereo drive DAC output from a stock Amiga. If >my info is correct, the Amiga ran the whole audio-visual show. Hmmm...if you mean utilize the waveform shaping ability of the Amiga stereo sound system? It's possible, although I'm sure there are filters which will limit the frequency of the system to audio freqs (i.e. no 50-100 hz). Actually I have tried using my Amiga to drive galvos before, but I used a conventional portable stereo box, which probably had even more filtering than the Amiga itself had. I could not get useful results from waveform shaping in general, although the sinewaves could be skewed just a little bit if one tried to use a square wave. -Tom
Technical Details
Message-ID:
<451@aplcomm.JHUAPL.EDU>Path:
arc1-ca.pugleaf.net!utzoo!utgpu!news-server.csri.toronto.edu!bonnie.concordia.ca!thunder.mcrcim.mcgill.edu!snorkelwacker.mit.edu!world!uunet!aplcomm!tedwardsReferences:
<6287@mindlink.bc.ca>Show Full Headers
Complete Article Headers
Path: arc1-ca.pugleaf.net!utzoo!utgpu!news-server.csri.toronto.edu!bonnie.concordia.ca!thunder.mcrcim.mcgill.edu!snorkelwacker.mit.edu!world!uunet!aplcomm!tedwards From: tedwards@aplcomm.JHUAPL.EDU (Edwards Thomas G S1A x8297) Newsgroups: sci.electronics Subject: Re: Laser show controllers Summary: Using the Amiga Message-ID: <451@aplcomm.JHUAPL.EDU> Date: 17 Jun 91 19:19:40 GMT References: <6287@mindlink.bc.ca> Reply-To: tedwards@aplcomm.jhuapl.edu (Edwards Thomas G S1A x8297 ) Organization: JHU/APL, Laurel, MD Lines: 16