Apparatus and method for narrowband direction- of-arrival estimation

A method for estimating sub-band-specific direction information for two or more sub-bands of a plurality of sub-bands, wherein the method comprises:

• calculating a feature vector comprising a plurality of feature samples for a plurality of frequency bands of two or more audio signals, and
• receiving the plurality of feature samples and being configured to output a plurality of output samples wherein the output samples indicate, for each sub-band of the two or more sub-bands, the sub-band-specific direction information for said sub-band,
• wherein each of the plurality of sub-bands is equal to one of the plurality of frequency bands or comprises at least one frequency band or a portion of a frequency band of the plurality of frequency bands,
• wherein the method further comprises employing the sub-band specific direction information for audio signal processing.

A non-transitory digital storage medium having stored thereon a computer program for performing a method for estimating sub-band-specific direction information for two or more sub-bands of a plurality of sub-bands, the method comprising:

• calculating a feature vector comprising a plurality of feature samples for a plurality of frequency bands of two or more audio signals, and
• receiving the plurality of feature samples and being configured to output a plurality of output samples wherein the output samples indicate, for each sub-band of the two or more sub-bands, the sub-band-specific direction information for said sub-band,
• wherein each of the plurality of sub-bands is equal to one of the plurality of frequency bands or comprises at least one frequency band or a portion of a frequency band of the plurality of frequency bands,
• wherein the method further comprises employing the sub-band specific direction information for audio signal processing,
• when the computer program is run by a computer.