Acoustic wave direction detection utilizing a single microphone
AssigneesToyota Motor Engineering & Manufacturing North America, Inc., Toyota Jidosha Kabushiki Kaisha
InventorsTaehwa Lee, Xiaopeng Li, Ziqi Yu
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Abstract
The direction of an acoustic wave can be determined using a single microphone. The single microphone can be operatively positioned within an interior of a resonator. The resonator can include a body that includes an aperture, such as a slit, which allows communication between the interior and an exterior of the resonator. The resonator can be configured to rotate. The single microphone can be configured to acquire sound data of an incident acoustic wave. One or more processors can be operatively connected to the single microphone. The one or more processors can be configured to determine a direction of the incident acoustic wave based on the acquired sound data.
Claims20
A system for detecting acoustic direction, comprising:
- a resonator, the resonator including a body defining an interior, the body including an aperture, the aperture allowing communication between the interior and an exterior of the resonator, the resonator configured to rotate;
- a single microphone operatively positioned within the interior of the resonator, the single microphone being configured to acquire sound data of an incident acoustic wave;
- and
- one or more processors operatively connected to the single microphone, the one or more processors being configured to determine a direction of the incident acoustic wave based on the acquired sound data.
A system for detecting acoustic direction, comprising:
- a Helmholtz resonator, the Helmholtz resonator including a body defining an interior, the body defining a slit, the slit allowing communication between the interior and an exterior of the resonator;
- one or more motors operatively connected to cause the Helmholtz resonator to rotate;
- a single microphone operatively positioned within the interior of the Helmholtz resonator, the single microphone being configured to acquire sound data of an incident acoustic wave;
- and
- one or more processors operatively connected to the single microphone, the one or more processors being configured to determine a direction of the incident acoustic wave based on the acquired sound data,
- the Helmholtz resonator being rotated at a speed that is faster than a duration of the acoustic wave such that the single microphone acquires sound data of the incident acoustic wave a plurality of times during a full rotation of the resonator.
Dependencies are inferred from the claim text.