Your perception of your limit can change over time.

你的感知限度会随着时间发生改变。

youdao

The existing limit of emission is quasi-peak (QP) value which is made to protect analog communication systems. QP value reflects human's auditory perception properties for analog voice signals.

现有电磁兼容发射限值主要是基于对模拟通信系统的考虑而制定的准峰值限值，它反映人的听觉系统对模拟语音信号的主观感知。

youdao

The wireless subwoofer also features patented Philips DoubleBASS technology to generate a deep and powerful bass performance and giving the perception of offering bass notes below the physical limit of the speaker.

ENGADGET: blogger-avatar