22.2マルチチャンネル音響における三次元残響付加装置の研究開発

抄録

We have been developing 3D reverberator used for 22.2 multichannel sound production system. It is desirable for the 3D reverberator in which device that many kinds of 22ch room impulse responses are implemented to control the spatial impression. Therefore, we developed “The block shift method,” that can generate a lot of impulse responses from an original one, the timbre of them are similar to it and the correlation between them are low. In order to increase the number of types of impulse responses furthermore, we have extended the method to generate impulse responses that have a longer reverberation time than an original one and are uncorrerated with each other.