Patent ID: 11877133
Assignee: NOKIA TECHNOLOGIES OY
Field: Audio-visual technology (Electrical engineering)
Classification: CPC H | IPC H

Claim 0:
1. A head-mounted audio output apparatus comprising:
at least one hybrid audio system comprising multiple transducers, wherein the hybrid audio system is configured to render sound for a user of the head-mounted audio output apparatus into different audio output channels using different associated transducers of the multiple transducers;
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 perform at least the following:
change, responsive to a relationship between an environmental value and a threshold, a cut-off frequency of at least a first one of the audio output channels in dependence upon the transducer associated with the first one of the audio output channels, wherein the threshold is based on one or more properties, comprising an energy spectrum or audio content, of at least the first one of the audio output channels.