Patent ID: 11862181
Assignee: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)
Field: Computer technology (Electrical engineering)
Classification: CPC G  H | IPC G  H

Claim 0:
1. A method for enabling generation of comfort noise for at least two audio channels at a receiving node, the method comprising:
determining a spatial coherence between a first audio signal for a first audio channel and a second audio signal for a second audio channel, wherein at least one spatial coherence value Cb,m per frame m and frequency band b is determined to form a vector of spatial coherence values, wherein a vector of predicted spatial coherence values Ĉpred,b,m(q) is formed by a weighted combination of a first coherence prediction Ĉ1,b,m(q) and a second coherence prediction Ĉ2,b,m , wherein the first coherence prediction Ĉ1,b,m(q) and the second coherence prediction Ĉ2,b,m are combined using a weight factor α;
determining the weight factor α based on a bit-budget Bm that specifies a number of bits available for encoding the vector of spatial coherence values in each frame m; and
signaling information about the weight factor α to the receiving node, for enabling the generation of the comfort noise for the at least two audio channels at the receiving node.