Sound processing device, sound processing method, and program

摘要

A sound processing device includes a first calculation unit configured to calculate a suppression gain of noise by using respective input signals input from a plurality of microphones; an integration unit configured to obtain an integration gain by using a suppression gain of an acoustic echo and the suppression gain of the noise; an application unit configured to apply the integration gain to one input signal among the plurality of input signals; and a second calculation unit configured to calculate the suppression gain of the acoustic echo by using signals to which the integration gain is applied, output signals that are output to a replay device, and the one input signal.

主权项

1. A sound processing device comprising:
a hardware controller; a memory storing a program that, when executed by the hardware controller, causes the sound processing device to:
calculate a suppression gain of noise by using respective input signals input from a plurality of microphones;obtain an integration gain by using a suppression gain of an acoustic echo and the suppression gain of the noise;apply the integration gain to one input signal among the plurality of input signals;estimate a spectrum of components of the acoustic echo by using said one input signal to which the integration gain is applied, an output signal that is output to a replay device, and said one input signal before having the integration gain applied thereto; andcalculate the suppression gain of the acoustic echo by comparing the estimated spectrum of the components of the acoustic echo and a spectrum of said one input signal before having the integration gain applied thereto; a baseband unit configured to modulate said one input signal to which the integration gain is applied into a transmission signal; a radio unit configured to convert the transmission signal to a radio signal; and an antenna configured to transmit the radio signal.