CPC H04R 3/005 (2013.01) [H04R 1/406 (2013.01); H04R 5/04 (2013.01); H04R 2499/11 (2013.01)] | 4 Claims |
1. A method of processing audio, comprising:
receiving an input signal including a plurality of microphone signals;
determining a mixing matrix based on characteristics of the input signal; and
mixing the input signal according the mixing matrix to produce a multichannel audio output signal including a plurality of output channels, wherein determining the mixing matrix comprises:
determining a vector representative of a dominant direction of arrival and a steering strength parameter representative of a degree to which the microphone signals appear to contain a single dominant direction of arrival; and
determining the mixing matrix by determining a weighted sum of a first matrix that is independent of the dominant direction of arrival and a second matrix that correlates to the dominant direction of arrival, wherein the first matrix is weighted by a first weight that decreases for an increase in value of the steering strength parameter, and wherein the second matrix is weighted by a second weight that increases for an increase in value of the steering strength parameter.
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