Title:
車両用能動型騒音制御システム
Document Type and Number:
Japanese Patent JP4378391
Kind Code:
B2
Abstract:
A frequency detecting circuit (150) estimates the frequency fp of a propeller shaft (76) based on the frequency fc of vehicle speed pulses, and calculates a control frequency fp' which is a harmonic of the frequency fp. A basic signal generator (316) generates a basic cosine wave signal xp1 and a basic sine wave signal xp2 of the control frequency fp'. Adaptive filters (156, 158) and an adder (160) generate a control signal Scp for canceling a driveline noise produced in a passenger compartment (14) by the propeller shaft (76). A speaker (30) outputs a canceling sound based on the control signal Scp into the passenger compartment (14).
Inventors:
Kobayashi Yasunori
Toshiro Inoue
Akira Takahashi
Kosuke Sakamoto
Toshiro Inoue
Akira Takahashi
Kosuke Sakamoto
Application Number:
JP2007085809A
Publication Date:
December 02, 2009
Filing Date:
March 28, 2007
Export Citation:
Assignee:
Honda motor industry stock company
International Classes:
B60R11/02; G10K11/178
Domestic Patent References:
| JP6019485A | ||||
| JP6043882A | ||||
| JP3203792A |
Attorney, Agent or Firm:
Takehiro Chiba
Toshiyuki Miyadera
Naoki Kashima
Yasuo Takubo
Toshiyuki Miyadera
Naoki Kashima
Yasuo Takubo