| 摘要 |
PURPOSE:To allow the title canceler to cope with various echo path replay lengths by dividing calculation block into plural blocks and processing the result. CONSTITUTION:The echo canceler is divided into a master circuit 4000, a slave 1 circuit 5001, a slave 2 circuit 5002 and a slave p circuit 500p and the echo is calcuated, then the function of the echo canceler is satisfied as a whole. In constituting the echo canceler by the adapted algorithm by the 2nd-order affine projection through above, a tap length of any value is realized by increasing/decreasing number of stages of slave circuits.
|
