echo effect

基本解释

You don't have to get yourself an external microphone as the built-in microphone get you to experience clear sound and echo-free audio effect.
你不须要让自己一外接式麦克风，作为内置麦克风，让您体验到清晰的声音和迴声免费的音频效果。
The inverse synthetic aperture radar (ISAR) echo signal model of fast-moving target and the effect of target fast-moving on ISAR signal processing were analyzed.
分析了高速运动目标的逆合成孔径雷达（ISAR）回波信号模型和目标高速运动对ISAR信号处理的影响。
Based on the paired-echo theory, the effect of waveguide dispersion on performance of the wideband signal pulse compression was analyzed and the corresponding expression derived.
基于成对回波理论，针对波导色散对宽带信号脉压的影响进行了理论分析，推导出了具体的数学表达式。

This echo effect can be heard on the recording of this huge hit for the Supremes in nineteen sixty-four, "Where Did Our Love Go?"

It's what we call a light echo, an effect that we've seen around supernovas - stars that explode - and because of the vast scales involved, the speed of light is actually very slow.
NPR: What Makes Our Solar System Special?
Dana Milbank chimed in to argue that the rise of Twitter had created an echo chamber effect among campaign journalists that shapes these shared narratives, literally moment-by-moment.
FORBES: Data Will Kill the Political Media "Narrative"