AUDIO PROCESSING

摘要

A technique for creating audio objects on basis of a source audio signal is provided. According to an example embodiment, the technique comprises obtaining a plurality of frequency sub-band signals, each representing a directional component of a source audio signal in the respective frequency sub-band, obtaining an indication of dominant sound source direction for one or more of said frequency sub-band signals, and creating one or more audio objects on basis of said plurality of frequency sub-band signals and said indications, said creating comprising deriving one or more audio object signals, each audio object signal comprising a respective directional signal determined on basis of frequency sub-band signals for which dominant sound source direction falls within a respective predetermined range of source directions and deriving one or more audio object direction indications for said one or more audio object signals, each audio object direction indication derived on basis of dominant sound source directions for the frequency sub-band signals used for determining the respective directional signal.

主权项

1. An apparatus comprising at least one processor and at least one memory including computer program code for one or more programs, the at least one memory and the computer program code configured to, with the at least one processor, cause the apparatus to:
obtain a plurality of frequency sub-band signals, each representing a directional component of a source audio signal in the respective frequency sub-band; obtain an indication of dominant sound source direction for one or more of said frequency sub-band signals; and create one or more audio objects on basis of said plurality of frequency sub-band signals and said indications, wherein the apparatus caused to create one or more objects is further caused to:
derive one or more audio object signals, each audio object signal comprising a respective directional signal determined on basis of frequency sub-band signals for which dominant sound source direction falls within a respective predetermined range of source directions; andderive one or more audio object direction indications for said one or more audio object signals, each audio object direction indication derived on basis of dominant sound source directions for the frequency sub-band signals used to determine the respective directional signal.