Combining spatial audio streams
AssigneeNokia Technologies Oy
InventorsMikko-Ville Laitinen, Adriana Vasilache, Tapani Pihlajakuja, Lasse Juhani Laaksonen, Anssi Sakari Rämö
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Abstract
There is inter alia disclosed an apparatus for spatial audio encoding configured to determining an audio scene separation metric between an input audio signal and a further input audio signal. and using the audio scene separation metric for quantizing of at least one spatial audio parameter of the input audio signal.
Claims12
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 at least to:
- determine an audio scene separation metric between an input audio signal comprising two or more audio channel signals and a further input audio signal comprising a plurality of audio object signals;
- and
- use the audio scene separation metric for quantizing of at least one spatial audio parameter of the input audio signal, wherein the apparatus caused to determine an audio scene separation metric between an input audio signal comprising two or more audio channel signals and a further input audio signal comprising a plurality of audio object signals is caused to transform the input audio signal into a plurality of time frequency tiles;
- transform the further input audio signal into a plurality of further time frequency tiles;
- determine an energy value of at least one time frequency tile;
- determine an energy value of at least one further time frequency tile;
- and determine the audio scene separation metric as a ratio of the energy value of the at least one time frequency tile to a sum of the energy value of the at least one time frequency tile and the energy value of the at least one further time frequency tile.
Dependencies are inferred from the claim text.