ECHO ERASING DEVICE, METHOD FOR ERASING ECHO, AND PROGRAM FOR ERASING ECHO

摘要

PROBLEM TO BE SOLVED: To provide an echo erasing device for erasing an echo signal caused by a built-in speaker, erasing an external speaker echo signal generated by an acoustic system which resides in the same room, and further erasing cross echo. SOLUTION: The echo erasing device 100 has: a regenerative sound signal inputting part 1; a speaker 2 for regenerating a regenerative sound signal; a microphone 3; a pickuped sound signal outputting part 4 for outputting a sound signal pickuped by the microphone 3; and an echo erasing part 5 for erasing the echo signal which wraps around the microphone 3 from the speaker 2. The device 100 is also equipped with: an auxiliary sound signal inputting part 6; and an auxiliary echo erasing part 7 for erasing the external speaker echo signal which wraps around the microphone 3 from an external speaker 20. COPYRIGHT: (C)2004,JPO