Title:
ノイズキャンセル装置
Document Type and Number:
Japanese Patent JP4683070
Kind Code:
B2
Abstract:
Disclosed herein is a noise canceling apparatus including: a microphone configured to pick up ambient sound as noise; a first signal generator configured to receive a signal from the microphone to generate a noise cancel signal that is inverted in phase to the signal received from the microphone and has an amplitude level considered with an attenuation in accordance with a distance from the microphone to an observation point separated away from the microphone; a first loudspeaker configured to be arranged in the proximity of the microphone and output the noise cancel signal; a second signal generator configured to receive the signal from the microphone to generate a positive-phase signal that has the same phase as that of the signal from the microphone; and a second loudspeaker configured to be arranged in the proximity of the microphone and output the positive-phase signal.
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Inventors:
Yasuyuki Kino
Yoshio Sasaki
Yoshio Sasaki
Application Number:
JP2008118022A
Publication Date:
May 11, 2011
Filing Date:
April 30, 2008
Export Citation:
Assignee:
ソニー株式会社
International Classes:
G10K11/178; B60R11/02
Domestic Patent References:
| JP3258099A | ||||
| JP5344584A |
Attorney, Agent or Firm:
Masatomo Sugiura