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AssigneeNippon Telegraph and Telephone Corporation
InventorsYohei WAKISAKA, Noriyoshi KAMADO, Hiroaki ITO, Shin MURATA
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To provide a noise control apparatus capable of stabilizing a noise suppression operation even when noise characteristics rapidly change in a manner that the noise control apparatus is controlled by correcting a coefficient of an adaptive filter, stopping a cancelling speaker, and the like in accordance with the current position of a vehicle such as a train. The noise control apparatus generates a cancellation signal to be reproduced by a cancelling speaker by performing an operation corresponding to position information m of a moving object in which the cancelling speaker used in active noise control is installed.
A noise control apparatus that generates a cancellation signal to be reproduced by a cancelling speaker by performing an operation corresponding to position information m of a moving object in which the cancelling speaker used in active noise control is installed.
A noise control method of generating a cancellation signal to be reproduced by a cancelling speaker by performing an operation corresponding to position information m of a moving object in which the cancelling speaker used in active noise control is installed.
Dependencies are inferred from the claim text.