Baffled Circular Loudspeaker Array With Broadband High Directivity

Super-directional loudspeaker arrays can be used to achieve high directivity in a limited low-frequency range. As opposed to microphone arrays, the distance between the loudspeakers has to be relatively large, resulting in aliasing starting at relatively low frequencies. On the other hand, mounting a loudspeaker on a rigid baffle (e.g., a rigid cylinder or sphere) increases its directivity with frequency. Using super-directional array techniques at low frequencies and leveraging loudspeakers' increased directivity at high frequencies enables achieving high directivity both at low and high frequencies. The design of baffled circular loudspeaker arrays and an improved beamforming procedure for achieving high directivity in a broad frequency range is described.


Published in:
IEEE International Conference on Acoustics, Speech, and Signal Processing
Presented at:
IEEE International Conference on Acoustics, Speech, and Signal Processing, Dallas, March 14-19, 2010
Year:
2010
ISSN:
1520-6149
Keywords:
Laboratories:




 Record created 2010-02-01, last modified 2018-03-17

n/a:
Download fulltext
PDF

Rate this document:

Rate this document:
1
2
3
 
(Not yet reviewed)