例句與造句

1. Tele - conference , video - conference . acoustic echo cancellation is normally achieved by means of an acoustic echo canceller , which , in its simplest form , consists of an adaptive filter which mimics the transfer function of the echo path ( or room acoustic ) to synthesize a replica of the echo , and then subtracts the estimation from the combined echo and near - end speech ( or disturbance ) signal to obtain the near - end signal alone
   聲回波抵消通常采用聲回波抵消器來實(shí)現(xiàn)，最簡單的聲回波抵消器由自適應(yīng)濾波器組成。具體方法是用自適應(yīng)濾波器來估計回波信號，并從麥克風(fēng)信號中減掉該估計值，從而實(shí)現(xiàn)聲回波的抵消。
2. It's difficult to find echo path in a sentence. 用echo path造句挺難的