Determination of the significance of spatial audio parameters and associated encoding
AssigneeNokia Technologies Oy
InventorsMikko-Ville LAITINEN, Adriana VASILACHE
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Abstract
There is inter alia disclosed an apparatus for spatial audio encoding which can receive or determine for one or more audio signals (102), spatial audio parameters (106) on a sub band basis for providing spatial audio reproduction, the spatial audio parameters can comprise a coherence value (112) for each sub band of a plurality of subbands (202) of a frame. The apparatus then determines a significance measure for the coherence values (401) of the plurality of sub bands of the frame and uses the significance measure to determine whether to encode (403) the coherence values of the plurality of sub bands of the frame.
Claims21
1-22. (canceled)
An apparatus comprising at least one processor and at least one memory including computer program code, the at least one memory and the computer program code configured to, with the at least one processor, cause the apparatus to:
- receive or determine for one or more audio signals, spatial audio parameters on a sub band basis for providing spatial audio reproduction, wherein the spatial audio parameters comprise a coherence value for each sub band of a plurality of sub-bands of a frame;
- determine a significance measure for the coherence values of the plurality of sub bands of the frame;
- and
- use the significance measure to determine whether to encode the coherence values of the plurality of sub bands of the frame.
A method for spatial audio encoding comprising:
- receiving or determining for one or more audio signals, spatial audio parameters on a sub band basis for providing spatial audio reproduction, wherein the spatial audio parameters comprise a coherence value for each sub band of a plurality of sub-bands of a frame;
- determining a significance measure for the coherence values of the plurality of sub bands of the frame;
- and
- using the significance measure to determine whether to encode the coherence values of the plurality of sub bands of the frame.
A computer program product embodied on a non-transitory computer readable medium, comprising computer program code configured to, when executed on at least one processor, cause an apparatus to:
- receive or determine for one or more audio signals, spatial audio parameters on a sub band basis for providing spatial audio reproduction, wherein the spatial audio parameters comprise a coherence value for each sub band of a plurality of sub-bands of a frame;
- determine a significance measure for the coherence values of the plurality of sub bands of the frame;
- and
- use the significance measure to determine whether to encode the coherence values of the plurality of sub bands of the frame.
Dependencies are inferred from the claim text.