Device for assisting two-way conversation and method for assisting two-way conversation

A two-way conversation assisting method for amplifying and assisting a two-way conversation,

• the two-way conversation assisting method being used in a conversation system including
• a first microphone that enters a first voice,
• a first loudspeaker that outputs the first voice,
• a second microphone that enters a second voice, and
• a second loudspeaker that outputs the second voice,
• the two-way conversation assisting method comprising
• a first echo and crosstalk estimating and calculating, using an input signal into the second loudspeaker, a first interference signal indicative of degrees of a first acoustic echo caused when the second voice output from the second loudspeaker enters into the first microphone and first acoustic crosstalk caused when the second voice enters into the first microphone, and removing the calculated first interference signal from an output signal of the first microphone.