Title:
SOUND ENVIRONMENT SIMULATOR
Document Type and Number:
Japanese Patent JP3264141
Kind Code:
B2
Abstract:
PURPOSE: To simulate and hear a sound after noise countermeasures are taken by performing convolutional operation for respective signals of noises or vibrations detected at plural points by a filter which shows spatial transmission characteristics based upon the contribution rate of a contribution rate analyzing means and reproducing a noise detected at a noise evaluation point.
CONSTITUTION: Information on the noise or vibration of equipment l which generates the noise is detected by sensors 2a, 2b, and 2c. The contribution rate analyzing means 4 performs the convolutional operation with a filter coefficient to analyze the contribution rates showing how much the detection signals of the sensors 2a, 2b, and 2c contribute to a microphone installed at the evaluation point at a constant distance from the equipment 1. The contribution rates are distributed to the detection signals of the sensors 2a, 2b, and 2c, and the noise at the evaluation point is synthesized by a sound synthesizing means 5 and outputted to speakers 6a and 6b. Consequently, the sound after noise countermeasures are taken can be simulated and heard.
Inventors:
Masanori Watanabe
Yasushi Takano
Shinichi Shimode
Katsuo Ohki
Yoshinori Ohta
Koji Iwase
Toshio Suzuki
Yasushi Takano
Shinichi Shimode
Katsuo Ohki
Yoshinori Ohta
Koji Iwase
Toshio Suzuki
Application Number:
JP13004395A
Publication Date:
March 11, 2002
Filing Date:
May 29, 1995
Export Citation:
Assignee:
株式会社日立製作所
International Classes:
G10K15/00; G01H3/00; G01H17/00; G01M3/00; G01S7/52; G06F17/00; G06F17/10; G06F19/00; G06Q50/00; G06Q50/04; G10L13/00; G10L13/02; H03H21/00; (IPC1-7): G10L13/00; G01H3/00; G01H17/00; G10K15/00
Domestic Patent References:
| JP4221987A | ||||
| JP728481A | ||||
| JP5011475A | ||||
| JP62180223A | ||||
| JP526722A | ||||
| JP61296896A | ||||
| JP315896A | ||||
| JP338695A | ||||
| JP573081A | ||||
| JP6165298A |
Attorney, Agent or Firm:
Yasuo Sakuta