| 摘要 |
PROBLEM TO BE SOLVED: To provide an up-mix device capable of obtaining an acoustic signal or voice data of a larger number of channels, from an acoustic signal or voice data not having the incidental information for up-ix, and to provide a sound reproduction device, sound amplification device, and program.SOLUTION: An up-mix device 1 generating an output acoustic signal of larger number of channels than an input acoustic signal includes a reverberation separator 10 for separating an input acoustic signal into a direct sound and an indirect sound, and a delay processing section 20 for generating a first indirect sound corresponding to each channel of the output acoustic signal, by performing delay processing of the indirect sound. |
