Title:
インパルス応答合成方法および残響付与方法
Document Type and Number:
Japanese Patent JP4286840
Kind Code:
B2
Abstract:
An impulse response synthesis method is carried out by a dispersion calculation process for calculating a dispersion of phase characteristics in association with a given room based on a volume of the room, a degree of sound absorption of the room, and a distance between a sound source and a receiving point arranged in the room, a noise creation process for creating a noise having the dispersion of the phase characteristics calculated in the dispersion calculation process, a trend addition process for adding a phase trend to the noise created by the noise creation process in accordance with the distance between the sound source and the receiving point and obtaining a phase characteristic of a minimum-phase component from the noise added with the phase trend, and a synthesis process for synthesizing an impulse response based on the phase characteristic of the minimum-phase component, the impulse response being used to create reverberation for the room.
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Inventors:
Yoshinori Takahashi
Mikio Tohyama
Hiroaki Fujita
Mikio Tohyama
Hiroaki Fujita
Application Number:
JP2006031416A
Publication Date:
July 01, 2009
Filing Date:
February 08, 2006
Export Citation:
Assignee:
Waseda University
Yamaha Corporation
Yamaha Corporation
International Classes:
G10K15/00; H04S1/00
Domestic Patent References:
| JP6315200A | ||||
| JP9121400A | ||||
| JP2004080668A | ||||
| JP2002374599A | ||||
| JP2005167612A | ||||
| JP11220800A | ||||
| JP2005102048A |
Attorney, Agent or Firm:
Takashi Matsumoto