Jeff really nailed it because we call our signal a gravitational wave background signal for historical reasons.

杰夫说得很对，因为出于历史原因，我们称我们的信号为“引力波背景信号”。

But the auditory system's health can affect this background signal.

但是听觉系统的健康会影响这个背景信号。

Relying on background signals to detect objects has an advantage in stealth operations: no pulse is sent out to alert anyone to what you are doing, or attract an anti-radar missile.

由于没有发出脉冲信号，没人会警觉你在什么，也不会引来反雷达导弹。