Patent ID: 8160268
Filing Date: 2012-04-17
Classification: H04R

Abstract:
1. A loudspeaker array comprising: at least one digital FIR filter configured to receive a digital audio signal from an audio sound source; at least one power D/A converter configured to receive a filtered signal from the at least one FIR filter, where the at least one digital FIR filter includes linear phase filter coefficients determined for optimized transducer positions; and a plurality of transducers of at least two different sizes, the plurality of transducers arranged symmetrically about a first axis and about a second axis perpendicular to the first axis at optimized transducer positions determined and optimized using a cost minimization function to determine a minimum difference between a desired performance of the loudspeaker array indicated by a directivity target function and a measured frequency response, the plurality of transducers coupled to the at least one power D/A converter.