Active noise reduction device, active noise reduction system and active noise reduction method
AssigneePanasonic Intellectual Property Management Co., Ltd.
InventorMitsuhiro TANI
Life of this patent
Estimating the term…
Abstract
An active noise reduction device includes a signal processor that generates a cancelling signal for outputting a cancelling sound for reducing noise in an interior of a vehicle and a communicator that receives a change request for changing a parameter set related to generation of the cancelling signal to a user-designated parameter set that is designated by a user, and the signal processor generates the cancelling signal by using the user-designated parameter set based on the change request received.
Claims13
An active noise reduction device comprising:
- a signal processor that generates a cancelling signal for outputting a cancelling sound for reducing noise in an interior of a moving body device, by applying an adaptive filter to a reference signal having a correlation with the noise, the adaptive filter having a coefficient that is updated based on an error signal indicating a state of the noise when the cancelling sound is being outputted;
- and
- a communicator that receives a change request for changing a parameter set related to generation of the cancelling signal to a user-designated parameter set that is designated by a user, wherein
- the signal processor generates the cancelling signal by using the user-designated parameter set based on the change request received.
An active noise reduction method that is executed by a computer, the active noise reduction method comprising:
- generating a cancelling signal for outputting a cancelling sound for reducing noise in an interior of a moving body device, by applying an adaptive filter to a reference signal having a correlation with the noise, the adaptive filter having a coefficient that is updated based on an error signal indicating a state of the noise when the cancelling sound is being outputted;
- receiving a change request for changing a parameter set related to generation of the cancelling signal to a user-designated parameter set that is designated by a user;
- and
- generating the cancelling signal by using the user-designated parameter set based on the change request received.
Dependencies are inferred from the claim text.