Essentially, ping sends an echo packet to the device, and expects the device to echo the packet contents back.

简单地说，ping向设备发送一个echo数据包，期望设备把数据包的内容发送回来。

youdao

The algorithm USES an adaptive filter to track the echo path, and an auxiliary filter to cancel the echo together with the adaptive filter.

该算法使用自适应滤波器跟踪回声信道，使用一个辅助滤波器和自适应滤波器一起完成回声消除。

youdao

NLMS (normalized least mean square) algorithm is widely used in echo canceller. However, due to high correlation of speech signals, the performance of echo canceller based on NLMS is depressed.

NLMS算法是回声消除器中最常用的算法之一，然而语音信号的强相关性使NLMS(归一化最小均方)算法的收敛速度变慢。

youdao

As the president continued his cross-country appeals on health care reform, partisan disagreements continued to echo on Capitol Hill.

VOA: standard.2010.03.10

But the point that I was trying to make was simply that -- and, again, to echo a little bit about what Secretary Gates said, we have -- we obviously have 68, 000 troops there.

WHITEHOUSE: Press Briefing

Criticism of how business schools may have helped create the end of the business world as we know it would seem to echo Gordon-Howell's point about the need for more emphasis on ethics.

ECONOMIST: The Gordon-Howell report of 1959

Bringing fish and seafood from the quay via auctions and wholesalers in curved rows of warehouses through to the end-buyers, it is the last echo of a Tokyo whose loss the governor seems to mourn.

ECONOMIST: Gems of the ocean