Systems, method, apparatus, and computer-readable media for decomposition of a multichannel music signal

摘要

A method of decomposing a multichannel audio signal is described. The method includes, for each of a plurality of frequency components of a segment in time of the multichannel audio signal, calculating a corresponding indication of a direction of arrival. The method also includes, based on the calculated direction indications, selecting a subset of the plurality of frequency components. The method further includes, based on the selected subset and on a plurality of basis functions, calculating a vector of activation coefficients. Each activation coefficient of the vector corresponds to a different basis function of the plurality of basis functions.

主权项

1. A method of analyzing a multichannel audio signal, said method comprising:
for each of a plurality of frequency components of a segment in time of the multichannel audio signal, calculating a corresponding indication of a direction of arrival; based on the calculated direction indications, selecting a subset of the plurality of frequency components; based on the selected subset and on a plurality of basis functions for decomposing the audio signal, calculating a vector of activation coefficients, wherein each activation coefficient of the vector corresponds to a different basis function of the plurality of basis functions; and reconstructing at least a selected portion of the audio signal based on the vector of activation coefficients.