some years ago i found a whole load of patents on the uspatent site for second order microphones. mostly for use in cell phones. others for hearing aids. it would be interesting to revisit the ideas, especially as i am now able to do very odd shapes using shapeways. umashankar
i have published my poems. read (or buy) at http://stores.lulu.com/umashankar > Date: Mon, 20 Dec 2010 21:15:39 -0800 > From: hel...@ai.sri.com > To: sursound@music.vt.edu > Subject: Re: [Sursound] does anyone have harry f. olson, "gradient > microphones", jasa 1946? > > I sent it to Jörn directly. RCA made a 2nd order microphone at one point > > http://www.coutant.org/bk10a/ > > Aaron > > 2010/12/20 Jörn Nettingsmeier <netti...@stackingdwarves.net>: > > it's cited in philip cotterel's thesis as the original source of the > > second-order gradient microphone. i can't believe it's not on the web, > > given its ripe old age. > > any pointers would be welcome. (and no, i didn't find it in the > > motherlode either.) > > > > thanks in advance, > > > > jörn > > > > > > -- > > Jörn Nettingsmeier > > Lortzingstr. 11, 45128 Essen, Tel. +49 177 7937487 > > > > Meister für Veranstaltungstechnik (Bühne/Studio), Elektrofachkraft > > Audio and event engineer - Ambisonic surround recordings > > > > http://stackingdwarves.net > > > > _______________________________________________ > > Sursound mailing list > > Sursound@music.vt.edu > > https://mail.music.vt.edu/mailman/listinfo/sursound > > > _______________________________________________ > Sursound mailing list > Sursound@music.vt.edu > https://mail.music.vt.edu/mailman/listinfo/sursound -------------- next part -------------- An HTML attachment was scrubbed... URL: <https://mail.music.vt.edu/mailman/private/sursound/attachments/20101221/2dc6a424/attachment.html> _______________________________________________ Sursound mailing list Sursound@music.vt.edu https://mail.music.vt.edu/mailman/listinfo/sursound
