Combining spatial audio streams
AssigneeNokia Technologies Oy
InventorsMikko-Ville LAITINEN, Adriana VASILACHE, Tapani PIHLAJAKUJA, Lasse Juhani LAAKSONEN, Anssi Sakari RÄMÖ
Life of this patent
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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.
Claims20
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 a time frequency tile of at least one transport audio signal, and a time frequency tile of an 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 associated with the time frequency tile of the at least one transport audio signal, wherein the apparatus caused to determine the audio scene separation metric between the time frequency tile of the at least one transport audio signal and the time frequency tile of the audio signal comprising a plurality of audio object signals is caused to:
- determine an energy value of the time frequency tile of the at least one transport audio signal;
- determine an energy value of the time frequency tile of the audio signal;
- and determine the audio scene separation metric as a ratio of the energy value of the time frequency tile of the at least one transport audio signal to a sum of the energy value of the time frequency tile of the at least one transport audio signal and the energy value of the time frequency tile of the audio signal.
A method comprising:
- determining an audio scene separation metric between a time frequency tile of at least one transport audio signal, and a time frequency tile of an audio signal comprising a plurality of audio object signals;
- and
- using the audio scene separation metric for quantizing at least one spatial audio parameter associated with the time frequency tile of the at least one transport audio signal, wherein determining the audio scene separation metric between the time frequency tile of the at least one transport audio signal and the time frequency tile of the audio signal comprising a plurality of audio object signals comprises:
- determining an energy value of the time frequency tile of the at least one transport audio signal;
- determining an energy value of the time frequency tile of the audio signal;
- and determining the audio scene separation metric as a ratio of the energy value of the time frequency tile of the at least one transport audio signal to a sum of the energy value of the time frequency tile of the at least one transport audio signal and the energy value of the time frequency tile of the audio signal.
Dependencies are inferred from the claim text.