Title:
OUTDOOR SOUND FIELD CORRECTION DEVICE
Document Type and Number:
Japanese Patent JP3333440
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide an outdoor sound field correction device that freely corrects sound pressure at an arbitrary place within a loudspeaker coverage.
SOLUTION: An outdoor sound field correction device has a sound input section that receives a sound and transduces the sound into an electric signal, and each sound source section that transduces the electric signal into a sound and produces an output. The outdoor sound field correction device has an input section 22 that receives each original sound pressure measured at each sound receiving point and each desired sound pressure at each sound receiving point. The outdoor sound field correction device has a calculation section 24 that calculates each correction sound pressure coefficient and each correction coefficient from data received by the input section 22. The outdoor sound field correction device has each correction section 12i, that is placed between the sound input section and each sound source section for controlling the electric signal, based on each correction coefficient. Each sound source section generates each correction sound pressure at each sound receiving point by the control of the electric signal by each correction section 12i for correcting sound pressure of each sound receiving point to each desired sound pressure.
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Inventors:
Matsumoto Minori
Application Number:
JP32084097A
Publication Date:
October 15, 2002
Filing Date:
November 21, 1997
Export Citation:
Assignee:
Japan Radio Co., Ltd.
International Classes:
H04R27/00; G10K15/00; H04R3/12; (IPC1-7): H04R27/00; G10K15/00; H04R3/12
Domestic Patent References:
| JP787590A | ||||
| JP5316598A |
Attorney, Agent or Firm:
Kenji Yoshida (2 outside)