infrasonic

• 指频率低于人类听觉范围（通常低于20赫兹）的声波。

Relating to sound waves with frequencies below the audible range for humans (typically below 20 Hz).

1. Low-frequency sound phenomenonC2formalscientific

   Relating to sound waves or vibrations with frequencies lower than those that can be heard by the human ear, typically below 20 Hz.

   次声的

   • Elephants use infrasonic calls to communicate over long distances.
   • Researchers deployed infrasonic sensors to detect volcanic eruptions.
   • The infrasonic rumble of the explosion was recorded miles away.
   • Whales produce infrasonic sounds for navigation and group coordination.

   同义词low frequencysubsonic

   反义词ultrasonic