Patent ID: 7336793
Filing Date: 2008-02-26
Classification: H04R,H04S

Abstract:
1. A method for configuring loudspeakers in a sound system, comprising: positioning a plurality of exciters into an array; determining a matrix of impulse responses from an output of the plurality of exciters; smoothing the measured data in the frequency domain separately for peaks and dips; averaging acoustical energy; computing linear phase upper equalization filters above an aliasing frequency from the averaged acoustical energy; equalizing the system in response to a virtual sound source; obtaining lower equalization filters up to the aliasing frequency from the equalized system; composing the upper equalization filters and the lower equalization filters; and obtaining a smooth link between low frequencies and high frequencies from the composed filters; where smoothing the measured data comprises: processing impulse responses in the matrix of impulse responses; smoothing a corresponding magnitude frequency response using a nonlinear method; computing an excess phase model based upon each processed impulse response of the processed impulse responses; smoothing a high frequency part of the modeled excess phase responses; maintaining a low frequency part of the excess phase responses unchanged; and synthesizing each processed impulse response in response to phase and magnitude responses.