The impulse response change which is based on the double talk condition

摘要

As for this invention it is the echo canceler for the supasu channel in the echo channel. The echo channel receives far end input and backward input. Modification of double talk condition and impulse response responding to one detection at least, the enabling formation vessel asserts supasu renewal. The main weight renewal vessel, following shadow weight of the shadow filter, to supasu renewal enabling, N of the main filter N in the supasu filter transfers to the set of supasu weight. The supasu main filter, filtering far end input in non adaptation, forms main output. The long shadow filter, far end input being adapted, filtering, forms shadow output, presumes the delay of the peak at the same time in the supasu weight in the main filter.