The Acoustical Society of America is hosting its 2nd Student Signal
Processing Competition at the Spring 2015 meeting
http://acousticalsociety.org/content/spring-2015-meeting in Pittsburgh,
PA. Details of the competition are as follows:
- Present your concept for a smartphone app at a poster
I have pretty light speakers in the spherical array that I
constructed, but for what its worth I was able to build a
reconfigurable array extremely cheaply using tripod mic stands and
threaded desktop microphone mounts. I just screwed the mounts to the
bottom of the loudspeakers and screwed them
Sampo,
You'd probably be interested in this paper where Boaz Rafaely
constructs an optimization problem for a dual sphere array...
B. Rafaely, “The spherical-shell microphone array,” Audio, Speech, and
Language Processing, IEEE Transactions on, vol. 16, pp. 740 — 747, May
2008.
I've tried a
You could mount them on the surface of a rigid sphere (a.la.
Eigenmike) with a tetrahedral configuration. Pressure sensors on a
rigid spherical baffle have similar characteristics in performance to
open sphere cardioid configurations. Without the baffle you will have
certain frequencies where
Re: speaker layouts
You might be interested in some work I did on choosing the right
positions for loudspeakers to minimize the spatial aliasing (actually
spatial imaging is a better name in the case of rendering, keeping
with the DSP terminology). With these designs you can use some sort
of
This is getting off topic, but in helping my advisor prepare an
invited talk a few months ago I found that the idea of cross-talk
canceling was invented by Manfred Schroeder and Bishnu Atal in the
60's at Bell Labs: http://www.freepatentsonline.com/3236949.html
They should have waited 40 years to
