[LAU] ambidec: number of speakers and sound card configurations

[Simon Wise]

On 19/09/10 17:56, fons at kokkinizita.net wrote:
> On Sat, Sep 18, 2010 at 05:35:03PM -0700, Niels Mayer wrote:
>
>> 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.

I was collaborating with audio engineer a few years ago who has been setting up 
quite elaborate arrays of speakers arranged to direct sound in particular 
directions, they have done fit-outs in the local state parliament chamber, and 
actually achieved nice clear announcements confined to the appropriate platform 
in a train station with 25 platforms. A nice system, from reasonably priced 
components.


Simon