Title:
室内のスピーカシステムを制御する方法及び装置
Document Type and Number:
Japanese Patent JP4392513
Kind Code:
B2
Abstract:
A method and corresponding apparatus for controlling the performance of a loudspeaker in a room includes the steps of, in a first acoustic environment, which may be regarded as a reference, determining the acceleration, velocity or displacement of the loudspeaker diaphragm and the sound pressure in front of the diaphragm, and, based on these quantities, determining the radiation resistance, radiated acoustic power or real part of the acoustic wave impedance. Thereafter, the above step is repeated in a second acoustic environment, which will normally be the actual listening room in which the loudspeaker is to be used. Based on the above measurements, the ratio between the radiation resistances, radiated power or real part of the acoustic wave impedances is determined, and the ratio, optionally after suitable further processing, is used to control a controllable correction filter inserted in the signal path of the loudspeaker, whereby the performance of the loudspeaker in the second acoustic environment can be brought substantially to match the performance of the loudspeaker in the first acoustic environment.
Inventors:
Ian Abilgard Pedersen
Application Number:
JP29260696A
Publication Date:
January 06, 2010
Filing Date:
November 05, 1996
Export Citation:
Assignee:
BANG AND OLUFSEN A/S
International Classes:
H04R1/34; H04R3/04; G10K15/00; H04R29/00
Domestic Patent References:
| JP60254899A | ||||
| JP62206999A | ||||
| JP6105390A |
Attorney, Agent or Firm:
British tribute
Kosaku Sugimura
Hiroshi Tokunaga
Kosaku Sugimura
Hiroshi Tokunaga