Sound capture system
AssigneeHarman Becker Automotive Systems GmbH
InventorMarkus CHRISTOPH
Life of this patent
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Abstract
A sound capture system is disclosed that includes an open-sphere microphone array where at least four omnidirectional microphones providing at least four output signals are disposed around a point of symmetry and an evaluation circuit that is connected to the at least four microphones disposed around the point of symmetry and that is configured to superimpose the output signal of each of the at least four microphones disposed around the point of symmetry with the output signal of one of the other microphones to form at least four differential microphone constellations providing at least four output signals, each differential microphone constellation having an axis along which it exhibits maximum sensitivity.
Claims20
A sound capture system comprising:
- an open-sphere microphone array, where at least four omnidirectional microphones providing at least four output signals are disposed around a point of symmetry;
- and
- an evaluation circuit that is connected to the at least four omnidirectional microphones disposed around the point of symmetry and that is configured to superimpose an output signal of each of the at least four omnidirectional microphones disposed around the point of symmetry with an output signal of one of other microphones to form at least four differential microphone constellations providing at least four output signals, each differential microphone constellation having an axis along which it exhibits maximum sensitivity.
A sound capture system comprising:
- an open-sphere microphone array including at least four omnidirectional microphones that provide at least four output signals, the at least four omnidirectional microphones being disposed around a point of symmetry;
- and
- an evaluation circuit that is connected to the at least four omnidirectional microphones disposed around the point of symmetry and that is configured to superimpose an output signal of each of the at least four omnidirectional microphones disposed around the point of symmetry with an output signal of one of the other microphones to form at least four differential microphone constellations providing at least four output signals, each differential microphone constellation having an axis along which it exhibits maximum sensitivity.
A method for sound capture, the method comprising:
- providing an open-sphere microphone array including at least four omnidirectional microphones that provide at least four output signals, the at least four omnidirectional microphones being disposed around a point of symmetry;
- and
- superimposing an output signal of each of the at least four omnidirectional microphones disposed around the point of symmetry with an output signal of one of the other microphones to form at least four differential microphone constellations providing at least four output signals, each differential microphone constellation having an axis along which it exhibits maximum sensitivity.
Dependencies are inferred from the claim text.