Patent ID: 8582783
Filing Date: 2013-11-12
Classification: H04R,H04S

Abstract:
1. A method, comprising the steps of: analyzing a signal from each microphone of an array of microphones; wherein the microphone array comprises a plurality of omni-directional microphone capsules, which are spaced in a proximity to each other with a spacing between each of the microphone capsules that is small in relation to sound wavelengths that affect a mapping of a the microphone signals to an output signal that drives at least two loudspeakers; for at least one subset of microphone signals, estimating a time difference that characterizes the relative time delays between the signals in the subset; estimating a direction from which a microphone input from one or more acoustic sources, which relate to the microphone signals, arrives at each of the microphones, based at least in part on the estimated time differences; filtering the microphone signals in relation to at least one filter transfer function, which relates to one or more filters; wherein said at least one filter transfer function comprises one or more of: computing a signal with which to drive the at least two loudspeakers based, at least on part, on the filtering step.