Sound wave field generation
AssigneeHarman Becker Automotive Systems GmbH
InventorMarkus CHRISTOPH
Life of this patent
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Abstract
To generate a sound wave field around a listening position in a target room, sound signals to be reproduced at a multiplicity of positions that are distributed in the target room in an arbitrary fashion are generated. Furthermore, an Ambisonic input signal is processed according to a modal beamforming algorithm to provide the sound signals. The modal beamforming algorithm includes matrixing according to a multiple-input multiple-output filtering algorithm.
Claims20
An audio system configured to generate a sound wave field around a listening position in a target room, the audio system comprising:
- a multiplicity of loudspeakers distributed in the target room;
- and
- at least one modal beamformer module connected upstream of the multiplicity of loudspeakers and downstream of at least one input signal path that receives at least one Ambisonic input signal, the at least one modal beamformer module comprising a matrixing module that comprises a multiple-input multiple-output (MIMO) filter module.
An audio reproduction method configured to generate a sound wave field around a listening position in a target room, the audio reproduction method comprising:
- generating sound signals to be reproduced at a multiplicity of positions that are distributed in the target room;
- executing a modal beamforming algorithm via a processor to provide the sound signals;
- and
- processing an Ambisonic input signal according to the modal beamforming algorithm, the modal beamforming algorithm including matrixing according to a multiple-input multiple-output (MIMO) filtering algorithm.
An audio system configured to generate a sound wave field around a listening position, the audio system comprising:
- a multiplicity of loudspeakers distributed in a target room;
- a processor;
- and
- at least one modal beamformer module connected to the multiplicity of loudspeakers and to at least one input signal path, the at least one modal beamformer being executed by the processor to receive at least one Ambisonic input signal, the at least one modal beamformer module including a matrixing module that comprises a multiple-input multiple-output (MIMO) filter module.
Dependencies are inferred from the claim text.