The eigenmike is supplied with a software application called EigenStudio, which allows the user to output various beams with selectable directivity. Those outputs aren't, or mostly aren't spherical harmonics. Instead, one has available cardioid, hypercardioid and supercardioid outputs up to 3rd order. Of course it is possible to derive the spherical harmonics from those.
Eric Benjamin ----- Original Message ----- From: Stefan Schreiber <st...@mail.telepac.pt> To: Surround Sound discussion group <sursound@music.vt.edu> Cc: Sent: Monday, June 17, 2013 8:52 AM Subject: Re: [Sursound] Eigenmike (Fons Adriaensen) For clarification: Could the eigenmike also do some 4th order recording (in a "real" sense, not giving some 4th order "output"), or is it a 3rd order microphone? Thanks, Stefan Fons Adriaensen wrote: >On Sat, Jun 15, 2013 at 09:21:55PM +0100, Paul Power wrote: > > > >>so it seems that the microphone is still not a perfect solution for >>HOA recording and requires some highly technical tinkering before it >>will give half decent results. >> >> > >It depends very much on the application. Some of those recordings >made by Farina's team are quite good, for example the collection >of 'ambient sounds' of the city they made earlier this year. But >the musical ones so far failed to convince me. It's the processing >SW that isn't yet what it could be - I've no doubts about the >quality of the mic itself. > >I've been present at some of the music recordings, so I can compare >my own impression of the event and the reproduction. One of these >was at the opera house in Parma. The mic was placed just behind the >conductor, and maybe half a meter above his head. Not and ideal >position, but it provides a reference point. I was sitting in the >first row, less than a meter from the mic stand. The recording was >'decoded' using a number of spot mics looking down on the orchestra >and four or so covering the stage (an angle of 120 degrees or so as >seem from the mic). The spot mics were then panned into 3rd order AMB, >and also used as primary sources in the WFS system of the Sala Bianca. > >In particular the stage mics needed quite some EQ in order to sound >more or less natural, but even then the result lacked the presence >of the original sound. Parma's opera house is very 'dry' - the result >of the layers of plaster added with each restoration without removing >the older ones. So sitting in the first row you really get a sound >that is quite 'direct', I wouldn't want a seat there normally. But it >seemed impossible to reproduce anything like that. > >Ciao, > > > _______________________________________________ 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
