>That would be pretty cool - an adaptive system where for lower frequencies you use more audiopixels, >for higher frequencies you use less, and of course the higher the frequency the more accurate localisation would be. > >best, Justin > > >Justin Bennett > >jus...@justinbennett.nl >www.justinbennett.nl >http://jubilee-art.org/
We want to use mems speakers in an array under the A3D algorithm. By using say a 7 x 1 array of memes speakers you will create a highly energy efficient speaker with maximal bass. This could be a TV or automotive tweeter and use a normal piston bass driver below the frequencies the mems cannot reproduce. An A3D array can be either one or two dimensional and is based on any prime number you like. So an audio pixel mems is 1cm x 1cm and has 32 columns and rows of pixels. You could use a prime number like 31. I would A3D in the lateral only. It could be 31 x 31 mems speakers but the vertical columns would be all in the same phase/wiring. The number of channels required is RND(Prime/2) = RND(31/2) = 16 channels. The bandwidth is limited by the mems width + spacing in between. Say 1.2cm. So top end wavelength = 1.2cm x 2 = 2.4cm say 14.3kHz. The bottom end of bandwidth = top end/(prime-1) = 14.3kHz/(31-1) = 14.3kHz/30 = 476Hz. So you create a great mid and high range driver (476Hz to 14,300Hz) with perfect unidirectionality using a prime = 31 of mems drivers. -- Joe Hayes CTO Acoustic3D Holdings Ltd ACN: 150521092 www.vastigo.com joe.ha...@acoustic3d.com Mb(AU): +61 423 172 933 <//423%20172%20933> Mb(CN): +86 1 <//157%206763%209176>32 438 52412 -------------- next part -------------- An HTML attachment was scrubbed... URL: <https://mail.music.vt.edu/mailman/private/sursound/attachments/20180123/fd7d448b/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.
