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US 11,223,339 B2Granted
Sound control device for vehicle and sound control method for vehicle
AssigneeMitsubishi Electric Corporation
InventorTsuyoshi Utsumi
Life of this patent
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Abstract
A vehicle speed detecting unit detects a vehicle speed. A threshold changing unit changes a threshold in accordance with the vehicle speed detected by the vehicle speed detecting unit. A gain calculating unit calculates a gain value of an input sound inputted to a microphone. A sound control unit mutes the input sound when the gain value of the input sound is equal, to or greater than the threshold changed by the threshold changing unit, the gain value being calculated by the gain calculating unit.
Claims6
A sound control device for a vehicle comprising:
- processing circuitry
- to detect a speed of the vehicle;
- to change a threshold in accordance with the detected speed of the vehicle;
- to calculate a gain value of an input sound inputted to a microphone;
- and
- to mute the input sound when the calculated gain value of the input sound is equal to or greater than the threshold changed, wherein
- the input sound includes an operation sound from a vehicle-mounted device and a traveling noise from the vehicle, and
- the processing circuitry has, as the threshold, a first threshold for muting the operation sound, and a second threshold greater than the first threshold, for not muting the traveling noise, and switches between the first threshold and the second threshold in accordance with the detected speed of the vehicle.
5 more elements
A sound control method for a vehicle comprising:
- detecting a speed of the vehicle;
- changing a threshold in accordance with the detected speed of the vehicle;
- calculating a gain value of an input sound inputted to a microphone;
- and
- muting the input sound when the calculated gain value of the input sound is equal to or greater than the threshold changed, wherein
- the input sound includes an operation sound from a vehicle-mounted device and a traveling noise from the vehicle, and
- the threshold includes a first threshold for muting the operation sound, and a second threshold greater than the first threshold, for not muting the traveling noise, to enable switching between the first threshold and the second threshold in accordance with the detected speed of the vehicle.
4 more elements
Dependencies are inferred from the claim text.