Patent ID: 8103006

Claim:
A method for increasing spatial resolution of audio signals representing a sound field, the method comprising: receiving three or more input audio signals that represent the sound field as a function of angular direction with zero-order and first-order angular terms; analyzing the three or more input audio signals to derive statistical characteristics of one or more angular directions of acoustic energy in the sound field; deriving two or more processed signals from weighted combinations of the three or more input audio signals in which the three or more audio signals are weighted according to the statistical characteristics, wherein the two or more processed signals represent the sound field as a function of angular direction with angular terms of one or more orders greater than one; providing five or more output audio signals that represent the sound field as a function of angular direction with angular terms of order zero, one and greater than one, wherein the five or more output audio signals comprise the three or more input audio signals and the two or more processed signals.