Patent ID: 11962992
Assignee: NOKIA TECHNOLOGIES OY
Field: Audio-visual technology (Electrical engineering)
Classification: CPC H  G | IPC H

Claim 12:
13. An apparatus configured to process a multi-channel input audio signal representing a sound field into a multi-channel output audio signal in accordance with a predefined loudspeaker layout, the apparatus comprising at least one processor; and at least one memory including computer program code, which when executed by the at least one processor, causes the apparatus to:
obtain spatial audio parameters that are descriptive of spatial characteristics of said sound field based on the multi-channel input audio signal;
estimate, based on said obtained spatial audio parameters, respective output signal energies for channels of the multi-channel output audio signal according to said predefined loudspeaker layout; and
determine at least one gain value for adjusting sound reproduction gain in at least one of said channels of the multi-channel output audio signal in synthesis based on the obtained spatial audio parameters, the predefined loudspeaker layout, at least one of the estimated respective output signal energies and the multi-channel input audio signal.