Hi, here in Aalto university there has been quite a lot of research using lasers to generate precise omnidirectional impulses at various focusing points for impulse response measurements of enclosures.
I also remember during a lecture in ISVR, UK, the lecturer mentioning these old plasma tweeters, saying they did not get very far cause they were ionizing the air producing hazardous levels of ozone :-D . Archontis Politis On 25 Mar 2018, at 14:34, David Pickett <d...@fugato.com<mailto:d...@fugato.com>> wrote: Are these not the same as the Ionophone speakers, sold as Ionofane tweeters in the 1960s? They were flat from 10kHz to oo! David At 12:41 25-03-18, Bearcat Åzándor wrote: > >Accapella Audio Arts has been making horns with plasma tweeters for a while >now. They are some of the largest, and most expensive speakers made. >Awesome in thier rediculousness, i'd be afraid that someone would get drunk >at my home and mistake them for a sink or a urinal. > >http://www.acapella.de/en/ > >On Sun, Mar 25, 2018 at 1:23 AM, Augustine Leudar ><augustineleu...@gmail.com<mailto:augustineleu...@gmail.com> >> wrote: > >> Ive been wondering for a while whether it was possible to use >> electromagnetic waves interferance patterns to generate sound in 3D space >> - the conclusions my physisit friends had was yes - possible - but not >> without killing anyone that heard it .Plamsa is a bit different of course >> to an EM wave.... > >> On 25 March 2018 at 07:45, Gary Gallagher >> <g.null.dev...@gmail.com<mailto:g.null.dev...@gmail.com>> wrote: > >> > Never heard of this. Using laser plasma as driver for a speaker. Here as >> > weapon - but it would be interesting to hear/see a refined version of >> > this. I'm curious about the spinning disk set up at the end of the video >> > there appears to be some sort of modulation in the sound. >> > >> > US MILITARY DEVELOPING LASER PLASMA SPEAKERS >> > <https://hackaday.com/2018/03/24/us-military-developing->> > >> > laser-plasma-speakers/> >> > >> > Gary >> > -------------- next part -------------- >> > An HTML attachment was scrubbed... >> > URL: <https://mail.music.vt.edu/mailman/private/sursound/>> > >> > attachments/20180325/2167d7e3/attachment.html> >> > _______________________________________________ >> > Sursound mailing list >> > Sursound@music.vt.edu<mailto:Sursound@music.vt.edu> >> > https://mail.music.vt.edu/mailman/listinfo/sursound - unsubscribe here, >> > edit account or options, view archives and so on. >> > > > > >> -- >> Dr. Augustine Leudar >> Artistic Director Magik Door LTD >> Company Number : NI635217 >> Registered 63 Ballycoan rd, >> Belfast BT88LL >> www.magikdoor.net<http://www.magikdoor.net> >> -------------- next part -------------- >> An HTML attachment was scrubbed... >> URL: <https://mail.music.vt.edu/mailman/private/sursound/>> >> attachments/20180325/df4cbd39/attachment.html> >> _______________________________________________ >> Sursound mailing list >> Sursound@music.vt.edu<mailto:Sursound@music.vt.edu> >> https://mail.music.vt.edu/mailman/listinfo/sursound - unsubscribe here, >> edit account or options, view archives and so on. > > > > >-- >Bearcat M. Åzándor >Feline Soul Systems LLC >Voice: 872.CAT.SOUL (872.228.7685) >Fax: 406.235.7070 >-------------- next part -------------- >An HTML attachment was scrubbed... >URL: ><https://mail.music.vt.edu/mailman/private/sursound/attachments/201803>25/e64fcf3d/attachment.html> >_______________________________________________ >Sursound mailing list >Sursound@music.vt.edu<mailto:Sursound@music.vt.edu> >https://mail.music.vt.edu/mailman/listinfo/sursound - unsubscribe >here, edit account or options, view archives and so on. _______________________________________________ Sursound mailing list Sursound@music.vt.edu<mailto:Sursound@music.vt.edu> https://mail.music.vt.edu/mailman/listinfo/sursound - unsubscribe here, edit account or options, view archives and so on. -------------- next part -------------- An HTML attachment was scrubbed... URL: <https://mail.music.vt.edu/mailman/private/sursound/attachments/20180326/f2cdfc8a/attachment.html> _______________________________________________ Sursound mailing list Sursound@music.vt.edu https://mail.music.vt.edu/mailman/listinfo/sursound - unsubscribe here, edit account or options, view archives and so on.
