US 11,310,588 B2 · Audio processing

Abstract

An audio processing technique including obtaining a multi-channel audio signal, a first sound direction of interest and a second sound direction of interest; determining, for one or more frequency bands, a respective first range of sound directions encompassed by a first focus pattern directed to said first sound direction of interest and a respective second range of sound directions encompassed by a second focus pattern directed to said second sound direction of interest; determining, for said one or more frequency bands, respective overlap between the first and second ranges of sound directions; and deriving, based on the multi-channel audio signal and in accordance with said first and second focus patterns, a processed audio signal where sounds in said first and second sound directions of interest are emphasized in relation to sounds in other sound directions, said derivation including controlling emphasis in dependence of the determined overlap.

Claims20

Dependent claims

A method for audio processing, the method comprising:

obtaining a multi-channel audio signal, a first sound direction of interest and a second sound direction of interest;
determining, for respective ones of one or more frequency bands of the multi-channel audio signal, a first range of sound directions encompassed with a first focus pattern directed to said first sound direction of interest and a second range of sound directions encompassed with a second focus pattern directed to said second sound direction of interest;
determining, for at least one frequency band of said one or more frequency bands, overlap between the first and second ranges of sound directions;
and
deriving a processed audio signal where sounds in said first and second sound directions of interest are emphasized in relation to sounds in other sound directions, said derivation comprising controlling at least one of the first focus pattern or the second focus pattern in at least one of said first range or said second range of sound directions for the respective ones of the one or more frequency bands in dependence of the determined overlap.

2 more elements

An apparatus for audio processing, the apparatus comprising at least one processor and at least one non-transitory memory including computer program code, which, when executed with the at least one processor, causes the apparatus to:

obtain a multi-channel audio signal, a first sound direction of interest and a second sound direction of interest;
determine, for respective ones of one or more frequency bands of the multi-channel audio signal, a first range of sound directions encompassed with a first focus pattern directed to said first sound direction of interest and a second range of sound directions encompassed with a second focus pattern directed to said second sound direction of interest;
determine, for at least one frequency band of said one or more frequency bands, overlap between the first and second ranges of sound directions;
and
derive a processed audio signal where sounds in said first and second sound directions of interest are emphasized in relation to sounds in other sound directions, said derivation comprising controlling at least one of the first focus pattern or the second focus pattern in at least one of said first range or said second range of sound directions for the respective ones of the one or more frequency bands in dependence of the determined overlap.

2 more elements

Dependencies are inferred from the claim text.

Audio processing

Life of this patent

Audio processing

Life of this patent

Abstract

Claims20