Sound mixing apparatus and method and multipoint conference server
A sound mixing apparatus includes mixing processing units 11 to 1k provided according to sampling frequencies. Each of mixing processing units 11 to 1k adds up input sound signals of the same sampling frequency to generate a first added-up sound signal, converts the sampling frequency of the first added-up sound signal into a sampling frequency processable by the other mixing processing units, and supplies sound signals that are converted to the sampling frequency, to the other mixing processing units, adds up, to generate a second added-up sound signal, the first added-up sound signal generated by itself and the first added-up sound signals that are converted to a sampling frequency processable by itself and that are supplied from the other mixing processing units.
NEC Corporation
H G
H04M G10L
inventional inventional
Hironori Kazunori
Ito Ozawa