Title:
音声信号処理装置および方法
Document Type and Number:
Japanese Patent JP5627241
Kind Code:
B2
Abstract:
In reverberant environments, reflected waves including an echoic sound and a muffled sound affect and disable recognition of sound arrival directions. As a result, the subjective clearness of the sounds deteriorates. In order to enhance the clearness of a reproduced sound in a reverberant environment, a pre-processing filter unit corrects an input sound signal portion having a frequency band relating to human auditory recognition on a sound wave arrival direction, and speakers reproduce the sound signal. The correction involves attenuating an input sound signal in the frequency band portion, based on the relationship between the frequencies of the input sound signal and the magnitude of influence to the recognition of the sound wave arrival direction. This attenuation is achieved by filtering using filter coefficients that are set by a first filter characteristic setting unit using hearing characteristic parameters that are set by a hearing characteristic setting unit.
Inventors:
田中 直也
Application Number:
JP2009550448A
Publication Date:
November 19, 2014
Filing Date:
January 14, 2009
Export Citation:
Assignee:
パナソニック株式会社
International Classes:
G10K11/178; H04R3/00; G10L21/0208
Domestic Patent References:
| JP2002354597A | 2002-12-06 | |||
| JP2007101782A | 2007-04-19 | |||
| JP2007282011A | 2007-10-25 | |||
| JP2003224898A | 2003-08-08 |
Attorney, Agent or Firm:
New house Extensive 守