Title:
SOUND FIELD CONTROLLER
Document Type and Number:
Japanese Patent JP2755208
Kind Code:
B2
Abstract:
PURPOSE: To realize the optimum sound field control with respect to sound signals of 3 channels in the forward direction and two channels of surrounding.
CONSTITUTION: An AC-3 decoder outputs signals in total 5 channels as main signals L, C, R and surround signals SL, SR. The main signals L, C, R and the (SL-SR) signal are synthesized by a synthesis means 30 and given to a main sound field signal generating section 32 to generate a main sound field signal Mo. The surround signals SL<SR and (L-R) are synthesized by a synthesis means 48 and given to a surround field signal generating means 54, from which a surround sound field signal So is generated. A composite sound field signal generating means 60 synthesizes the main sound signal Mo, the surround sound field signal So, and the original surround signals S1, SR to generate a composite sound field signal Co. The main signals L, C, R are sounded from speakers 14, 16, 18 and composite sound field signals FL, FR, RL are reproduced by speakers 20, 22, 24, 26.
Inventors:
IWAMATSU MASAYUKI
Application Number:
JP9814495A
Publication Date:
May 20, 1998
Filing Date:
March 30, 1995
Export Citation:
Assignee:
YAMAHA KK
International Classes:
H04S1/00; G10K15/00; H04S3/00; H04S5/02; H04S7/00; (IPC1-7): H04S3/00; G10K15/00; H04S1/00; H04S5/02
Domestic Patent References:
| JP61257099A | ||||
| JP1115300A | ||||
| JP4150200A |
Attorney, Agent or Firm:
Kunihiko Kato
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