Patent ID: 9456267
Filing Date: 2016-09-27
CPC Classification: G10K,H04R

Claim Text:
1. A noise reduction apparatus, comprising: a microphone that picks up a noise from surroundings of a casing; a cancellation signal generating section that generates a cancellation signal for reducing the noise from surroundings, by applying filtering to a signal picked up by the microphone; a predicted signal computing section that computes a predicted signal by predicting a noise from surroundings leaking into the casing, on a basis of the signal picked up by the microphone; an additional-signal control section that generates an additional signal for improving a listening feel of an actual residual noise, wherein the additional signal is based on a predicted residual noise obtained by adding the cancellation signal and the predicted signal, wherein the actual residual noise is a result of the filtering of the signal picked up by the microphone; and an addition/output section that adds and outputs the additional signal and the cancellation signal.