Hi Tim, I am the Sursound admin.
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Kind Regards, Paul - Sursound admin > On 23 Jan 2018, at 08:29, TIM BOISSAUD-COOKE <tim...@btopenworld.com> wrote: > > At what point does Ockham's Razor apply? > > Sent from my iPad > >> On 20 Jan 2018, at 17:00, sursound-requ...@music.vt.edu wrote: >> >> Send Sursound mailing list submissions to >> sursound@music.vt.edu >> >> To subscribe or unsubscribe via the World Wide Web, visit >> https://mail.music.vt.edu/mailman/listinfo/sursound >> or, via email, send a message with subject or body 'help' to >> sursound-requ...@music.vt.edu >> >> You can reach the person managing the list at >> sursound-ow...@music.vt.edu >> >> When replying, please edit your Subject line so it is more specific >> than "Re: Contents of Sursound digest..." >> >> >> WHEN REPLYING EDIT THE SUBJECT LINE >> >> ALSO EDIT THE MESSAGE BODY >> >> You are receiving the digest so when replying, please remember to edit your >> Subject line to that of the original message you are replying to, so it is >> more specific than "Re: Contents of Sursound-list digest…" the subject >> should match the post you are replying to. >> >> Also, please EDIT the quoted post so that it is not the entire digest, but >> just the post you are replying to - this will keep the archive useful and >> not polluted with extraneous posts. >> >> This is the responsibility of digest subscribers. the community and list >> subscribers care about the integrity of the threads and archives so this is >> important. >> >> Today's Topics: >> >> 1. Re: MEMS speakers (Gary Gallagher) >> 2. Re: MEMS speakers (Augustine Leudar) >> 3. Re: MEMS speakers (Charlie Richmond) >> 4. Re: MEMS speakers (J?rn Nettingsmeier) >> 5. Re: MEMS speakers (J?rn Nettingsmeier) >> 6. Re: MEMS speakers (Augustine Leudar) >> >> >> ---------------------------------------------------------------------- >> >> Message: 1 >> Date: Fri, 19 Jan 2018 19:04:12 +0000 >> From: Gary Gallagher <g.null.dev...@gmail.com> >> To: Surround Sound discussion group <sursound@music.vt.edu> >> Subject: Re: [Sursound] MEMS speakers >> Message-ID: >> <cadbzbygj4hgfxfmg2cch0ms2kltkjzqakcimdecey+tkooh...@mail.gmail.com> >> Content-Type: text/plain; charset="utf-8" >> >> Wave field synthesis wall paper? How small does an an audio pixel have to >> be? >> >> On Wed, Jan 17, 2018, 20:25 Augustine Leudar <augustineleu...@gmail.com> >> wrote: >> >>> Interesting..... I can think of a lot of applications for these and spatial >>> audio.... >>> >>> On Wednesday, 17 January 2018, Gary Gallagher <g.null.dev...@gmail.com> >>> wrote: >>> >>>> https://hackaday.com/2018/01/16/new-part-day-mems- >>>> loudspeakers/?_utm_source=1-2-2 >>>> -------------- next part -------------- >>>> An HTML attachment was scrubbed... >>>> URL: <https://mail.music.vt.edu/mailman/private/sursound/ >>>> attachments/20180117/0048d767/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. >>> >>> >>> -- >>> Dr. Augustine Leudar >>> Artistic Director Magik Door LTD >>> Company Number : NI635217 >>> Registered 63 Ballycoan rd, >>> Belfast BT88LL >>> -------------- next part -------------- >>> An HTML attachment was scrubbed... >>> URL: < >>> https://mail.music.vt.edu/mailman/private/sursound/attachments/20180117/21cc7455/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. >> -------------- next part -------------- >> An HTML attachment was scrubbed... >> URL: >> <https://mail.music.vt.edu/mailman/private/sursound/attachments/20180119/6c849f58/attachment.html> >> >> ------------------------------ >> >> Message: 2 >> Date: Sat, 20 Jan 2018 01:14:23 +0000 >> From: Augustine Leudar <augustineleu...@gmail.com> >> To: Surround Sound discussion group <sursound@music.vt.edu> >> Subject: Re: [Sursound] MEMS speakers >> Message-ID: >> <CABx2juq6BReQBWYcxCxYzAvrENjXY80PczEa=zjpddg-ifx...@mail.gmail.com> >> Content-Type: text/plain; charset="utf-8" >> >> exactly what I was thinking Gary - except youd need a million channel >> interface - there's be other ways though. Basically it would be a good way >> of getting 3D audio into peoples homes - as noone can either be bothered to >> set up even 4 speakers let alone some fancy atmos setup. So some kind of >> wallpaper would possibly work, something that requires almost zero setup >> anyway... >> >>> On 19 January 2018 at 19:04, Gary Gallagher <g.null.dev...@gmail.com> wrote: >>> >>> Wave field synthesis wall paper? How small does an an audio pixel have to >>> be? >>> >>> On Wed, Jan 17, 2018, 20:25 Augustine Leudar <augustineleu...@gmail.com> >>> wrote: >>> >>>> Interesting..... I can think of a lot of applications for these and >>> spatial >>>> audio.... >>>> >>>> On Wednesday, 17 January 2018, Gary Gallagher <g.null.dev...@gmail.com> >>>> wrote: >>>> >>>>> https://hackaday.com/2018/01/16/new-part-day-mems- >>>>> loudspeakers/?_utm_source=1-2-2 >>>>> -------------- next part -------------- >>>>> An HTML attachment was scrubbed... >>>>> URL: <https://mail.music.vt.edu/mailman/private/sursound/ >>>>> attachments/20180117/0048d767/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. >>>> >>>> >>>> -- >>>> Dr. Augustine Leudar >>>> Artistic Director Magik Door LTD >>>> Company Number : NI635217 >>>> Registered 63 Ballycoan rd, >>>> Belfast BT88LL >>>> -------------- next part -------------- >>>> An HTML attachment was scrubbed... >>>> URL: < >>>> https://mail.music.vt.edu/mailman/private/sursound/ >>> attachments/20180117/21cc7455/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. >>> -------------- next part -------------- >>> An HTML attachment was scrubbed... >>> URL: <https://mail.music.vt.edu/mailman/private/sursound/ >>> attachments/20180119/6c849f58/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. >> >> >> >> -- >> Dr. Augustine Leudar >> Artistic Director Magik Door LTD >> Company Number : NI635217 >> Registered 63 Ballycoan rd, >> Belfast BT88LL >> -------------- next part -------------- >> An HTML attachment was scrubbed... >> URL: >> <https://mail.music.vt.edu/mailman/private/sursound/attachments/20180120/7eac8b44/attachment.html> >> >> ------------------------------ >> >> Message: 3 >> Date: Fri, 19 Jan 2018 18:03:51 -0800 >> From: Charlie Richmond <charlie....@gmail.com> >> To: Surround Sound discussion group <sursound@music.vt.edu> >> Subject: Re: [Sursound] MEMS speakers >> Message-ID: >> <cah8n2omy-0fc6vkecmvqndgormx-zavdeivtw7pmw9jtcmn...@mail.gmail.com> >> Content-Type: text/plain; charset="utf-8" >> >> SoundMan-Server is a virtual matrix that has up to 1k discrete inputs and >> outputs with dynamic level, eq and delay controls at each crosspoint if >> that helps at all. >> >> Charlie >> >> On Fri, Jan 19, 2018 at 5:14 PM, Augustine Leudar <augustineleu...@gmail.com >>> wrote: >> >>> exactly what I was thinking Gary - except youd need a million channel >>> interface - there's be other ways though. Basically it would be a good way >>> of getting 3D audio into peoples homes - as noone can either be bothered to >>> set up even 4 speakers let alone some fancy atmos setup. So some kind of >>> wallpaper would possibly work, something that requires almost zero setup >>> anyway... >>> >>> On 19 January 2018 at 19:04, Gary Gallagher <g.null.dev...@gmail.com> >>> wrote: >>> >>>> Wave field synthesis wall paper? How small does an an audio pixel have to >>>> be? >>>> >>>> On Wed, Jan 17, 2018, 20:25 Augustine Leudar <augustineleu...@gmail.com> >>>> wrote: >>>> >>>>> Interesting..... I can think of a lot of applications for these and >>>> spatial >>>>> audio.... >>>>> >>>>> On Wednesday, 17 January 2018, Gary Gallagher <g.null.dev...@gmail.com >>>> >>>>> wrote: >>>>> >>>>>> https://hackaday.com/2018/01/16/new-part-day-mems- >>>>>> loudspeakers/?_utm_source=1-2-2 >>>>>> -------------- next part -------------- >>>>>> An HTML attachment was scrubbed... >>>>>> URL: <https://mail.music.vt.edu/mailman/private/sursound/ >>>>>> attachments/20180117/0048d767/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. >>>>> >>>>> >>>>> -- >>>>> Dr. Augustine Leudar >>>>> Artistic Director Magik Door LTD >>>>> Company Number : NI635217 >>>>> Registered 63 Ballycoan rd, >>>>> Belfast BT88LL >>>>> -------------- next part -------------- >>>>> An HTML attachment was scrubbed... >>>>> URL: < >>>>> https://mail.music.vt.edu/mailman/private/sursound/ >>>> attachments/20180117/21cc7455/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. >>>> -------------- next part -------------- >>>> An HTML attachment was scrubbed... >>>> URL: <https://mail.music.vt.edu/mailman/private/sursound/ >>>> attachments/20180119/6c849f58/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. >>> >>> >>> >>> -- >>> Dr. Augustine Leudar >>> Artistic Director Magik Door LTD >>> Company Number : NI635217 >>> Registered 63 Ballycoan rd, >>> Belfast BT88LL >>> -------------- next part -------------- >>> An HTML attachment was scrubbed... >>> URL: <https://mail.music.vt.edu/mailman/private/sursound/ >>> attachments/20180120/7eac8b44/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. >> >> >> >> -- >> * Charlie Richmond - http://www.RichmondSoundDesign.com >> <http://www.richmondsounddesign.com/> >> * Viber: +16047159441 Skype, LinkedIn & Twitter: charlierichmond >> * facebook: charlie.richmond >> * facebook.com/pages/Richmond-Sound-Design-Ltd/130195960832 >> <https://www.facebook.com/pages/Richmond-Sound-Design-Ltd/130195960832> >> * google.com/+CharlieRichmond google.com/+Richmondsounddesign >> -------------- next part -------------- >> An HTML attachment was scrubbed... >> URL: >> <https://mail.music.vt.edu/mailman/private/sursound/attachments/20180119/87852074/attachment.html> >> >> ------------------------------ >> >> Message: 4 >> Date: Sat, 20 Jan 2018 13:12:39 +0100 >> From: J?rn Nettingsmeier <netti...@stackingdwarves.net> >> To: sursound@music.vt.edu >> Subject: Re: [Sursound] MEMS speakers >> Message-ID: <61d505fe-f46d-5122-2264-687cb4b44...@stackingdwarves.net> >> Content-Type: text/plain; charset=utf-8; format=flowed >> >>> On 01/19/2018 08:04 PM, Gary Gallagher wrote: >>> Wave field synthesis wall paper? How small does an an audio pixel have to >>> be? >> >> >> The question is more like "how big can you make it?". An audio "pixel" >> of a square millimetre cannot produce meaningful audio frequencies if >> suspended in mid-air without a baffle, you would have to get somewhat >> close to the wavelength. So no million-channel audio interfaces either, >> I guess the approach would be to use lots of those pixels in unison. How >> you ensure good airtight coupling between them is one question, and the >> other is how much excursion you can get. >> >> Thiele-Small parameters for silicon cavities, anyone? :-D >> >> It's quite a moonshot actually, and if you start thinking about the >> complexities, that carbon nanosheet paper that came from China a few >> years back doesn't sound soo far-fetched anymore, where people were >> producing sound by heating surfaces with an extremely good heat >> conductivity (so its thermal cycles can be at audio frequencies). >> Problem there is 100% k2, as it's effectively a half-wave rectifier... >> >> >> -- >> J?rn Nettingsmeier >> De Rijpgracht 8, 1055VR Amsterdam, Nederland >> Tel. +49 177 7937487 >> >> Meister f?r Veranstaltungstechnik (B?hne/Studio), Tonmeister VDT >> http://stackingdwarves.net >> >> >> ------------------------------ >> >> Message: 5 >> Date: Sat, 20 Jan 2018 13:14:30 +0100 >> From: J?rn Nettingsmeier <netti...@stackingdwarves.net> >> To: sursound@music.vt.edu >> Subject: Re: [Sursound] MEMS speakers >> Message-ID: <39d8b6a1-f3a9-8acd-01fa-fa1fe00f6...@stackingdwarves.net> >> Content-Type: text/plain; charset=utf-8; format=flowed >> >>> On 01/20/2018 01:12 PM, J?rn Nettingsmeier wrote: >>>> On 01/19/2018 08:04 PM, Gary Gallagher wrote: >>>> Wave field synthesis wall paper? How small does an an audio pixel have to >>>> be? >>> >>> >>> The question is more like "how big can you make it?". An audio "pixel" >>> of a square millimetre cannot produce meaningful audio frequencies if >>> suspended in mid-air without a baffle, you would have to get somewhat >>> close to the wavelength. So no million-channel audio interfaces either, >>> I guess the approach would be to use lots of those pixels in unison. How >>> you ensure good airtight coupling between them is one question, and the >>> other is how much excursion you can get. >>> >>> Thiele-Small parameters for silicon cavities, anyone? :-D >>> >>> It's quite a moonshot actually, and if you start thinking about the >>> complexities, that carbon nanosheet paper that came from China a few >>> years back doesn't sound soo far-fetched anymore, where people were >>> producing sound by heating surfaces with an extremely good heat >>> conductivity (so its thermal cycles can be at audio frequencies). >>> Problem there is 100% k2, as it's effectively a half-wave rectifier... >> >> Hit send too fast - meant to add that Fraunhofer in Germany has been >> doing research on MEMS drivers for in-ear systems for a while, and they >> combine the output of a cascade of laterally compressed nanomechanical >> cavities in series to drive the eardrum. >> >> >> -- >> J?rn Nettingsmeier >> De Rijpgracht 8, 1055VR Amsterdam, Nederland >> Tel. +49 177 7937487 >> >> Meister f?r Veranstaltungstechnik (B?hne/Studio), Tonmeister VDT >> http://stackingdwarves.net >> >> >> ------------------------------ >> >> Message: 6 >> Date: Sat, 20 Jan 2018 15:36:43 +0000 >> From: Augustine Leudar <augustineleu...@gmail.com> >> To: Surround Sound discussion group <sursound@music.vt.edu> >> Subject: Re: [Sursound] MEMS speakers >> Message-ID: >> <cabx2juoqvfi6nx2+f5wrpbnybzejkjhbszypp_qekwnyekp...@mail.gmail.com> >> Content-Type: text/plain; charset="utf-8" >> >> Youd have to have "patches" of mems working in unison I guess to get the >> lower frequencies . You might be abvle to do soemthing interesting with the >> ultrasonic methods the directional "zone" speakers use as well.... >> >> On 20 January 2018 at 12:12, J?rn Nettingsmeier < >> netti...@stackingdwarves.net> wrote: >> >>>> On 01/19/2018 08:04 PM, Gary Gallagher wrote: >>>> >>>> Wave field synthesis wall paper? How small does an an audio pixel have to >>>> be? >>> >>> >>> The question is more like "how big can you make it?". An audio "pixel" of >>> a square millimetre cannot produce meaningful audio frequencies if >>> suspended in mid-air without a baffle, you would have to get somewhat close >>> to the wavelength. So no million-channel audio interfaces either, I guess >>> the approach would be to use lots of those pixels in unison. How you ensure >>> good airtight coupling between them is one question, and the other is how >>> much excursion you can get. >>> >>> Thiele-Small parameters for silicon cavities, anyone? :-D >>> >>> It's quite a moonshot actually, and if you start thinking about the >>> complexities, that carbon nanosheet paper that came from China a few years >>> back doesn't sound soo far-fetched anymore, where people were producing >>> sound by heating surfaces with an extremely good heat conductivity (so its >>> thermal cycles can be at audio frequencies). Problem there is 100% k2, as >>> it's effectively a half-wave rectifier... >>> >>> >>> -- >>> J?rn Nettingsmeier >>> De Rijpgracht 8, 1055VR Amsterdam, Nederland >>> Tel. +49 177 7937487 >>> >>> Meister f?r Veranstaltungstechnik (B?hne/Studio), Tonmeister VDT >>> http://stackingdwarves.net >>> >>> _______________________________________________ >>> 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. >> >> >> >> -- >> Dr. Augustine Leudar >> Artistic Director Magik Door LTD >> Company Number : NI635217 >> Registered 63 Ballycoan rd, >> Belfast BT88LL >> -------------- next part -------------- >> An HTML attachment was scrubbed... >> URL: >> <https://mail.music.vt.edu/mailman/private/sursound/attachments/20180120/5f11d678/attachment.html> >> >> ------------------------------ >> >> Subject: Digest Footer >> >> _______________________________________________ >> Sursound mailing list >> Sursound@music.vt.edu >> https://mail.music.vt.edu/mailman/listinfo/sursound >> >> WHEN REPLYING EDIT THE SUBJECT LINE >> >> ALSO EDIT THE MESSAGE BODY >> >> >> ------------------------------ >> >> End of Sursound Digest, Vol 114, Issue 4 >> **************************************** > > _______________________________________________ > 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. -------------- next part -------------- A non-text attachment was scrubbed... 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