19 Sep
2010
19 Sep
'10
11:56 a.m.
On Sat, Sep 18, 2010 at 05:35:03PM -0700, Niels Mayer wrote:
One question I forgot to ask regarding layout of an
ambisonic system.
Rather than deal with all the trouble of routing audio and placing
speakers at the periphery of the listening area, is it possible to
employ a concept similar to the
Eigenmike ( http://www.mhacoustics.com/mh_acoustics/Eigenmike_microphone_array.html
) but instead have an "EigenSpeaker" with 24 small full-range
speakers mounted on the surface of a sphere in the center of a large
room? Such a configuration would be easier to setup, because all the
connections and DSP/processing/amplifiers/speakers could be kept in a
central area. The question, is it possible to have a torus shaped
sweet spot for the audience surrounding the "EigenSpeaker" ?
Such speakers do exist, Ircam in Paris has done quite some research
on them. They are based on AMB theory, but they do not provide AMB
playback - what you get is a speaker that can generate multiple
steerable beams. It's used in acoustic measurements to excite just
part of a space, and in EA music to simulate the directivity of real
instruments.
Ciao,
--
FA
There are three of them, and Alleline.