To provide an echo removing apparatus and method, and communication apparatus, for preventing the occurrence of echo when the same sound is outputted near the communication apparatus at both parties of a speech.
The echo removing apparatus 100 is provided with: a first echo canceller 101; a second echo canceller 102; and a third echo canceller 103. The first to third echo cancellers 101, 102, 103 comprise an adaptive filter 101A and a subtractor 101B, an adaptive filter 102A and a subtractor 102B, and an adaptive filter 103A and a subtractor 103B, respectively. A TV audio signal and a receiver sound signal are inputted to the first echo canceller 101. A receiver sound signal and a transmitter sound signal S3 from a microphone 33 are inputted to the third echo canceller 103. A TV audio signal and a transmitter sound signal S4 are inputted to the second echo canceller 102.
YAMASHITA HIROSHI
ICHIOKA HIDETOSHI
NISHIYAMA KAZUO
OMORI SHIRO
SUZUKI KENJI
TAKIZAWA SHUICHI
SAMEJIMA SHINICHI
| JPH0518149U | 1993-03-05 |
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