What is an example of a low frequency sound?

One advantage of lower frequencies is that the signals have better penetration , meaning they pass through objects such as walls with less attenuation. This effect results in better in-building penetration.

Frequency is an important parameter used in science and engineering to specify the rate of oscillatory and periodic phenomena, such as mechanical vibrations, audio signals (sound), radio waves, and light .

In addition to VHF broadcasting, very high-frequency radio waves are widely used for ship and aircraft communications, disaster prevention and administration radio, police and fire radios, ham radio, and other applications .