| 摘要 |
PROBLEM TO BE SOLVED: To provide a reverberation sound addition device capable of simulating an acoustic property of a predetermined space, and controlling sound density of reverberant sound.SOLUTION: A signal processing unit 30 performs processing simulating a propagation path of a rear reverberation sound to an input signal, and then distributes an acoustic signal into plural output lines. The signal processing unit 30 adds each of plural noises which have no correlation with each other, and an impulse noise formed of an impulse train having a time interval of a predetermined probability, for forming plural addition noises. Then, the signal processing unit multiplies each of the plural addition noises and IR amplitude property for creating plural non-correlation IRs. Each of the plural non-correlation IRs is convoluted to each of the acoustic signals distributed to the plural output lines, for creating a signal indicating the rear reverberation sound for each output line.SELECTED DRAWING: Figure 6 |
