0 Difference Between ACOUSTIC RANGE | ULTRASOUND | INFRASOUND

FREQUENCY IN SOUND WAVE

Difference between acoustic range, ultrasound and infrasound can be determined on different frequency. Well let go back to Pitch definition, as i had posted in earlier posted about the difference between sound waves, pitch, tone and noise. In music, the pitch of the certain note define as the perception of frequency. For instance, note middle C has frequency as 262 Hertz. Concert A has frequency as 440 Hertz.

Sound Wave

What does it mean, when we describe wave of having a certain Hertz? 

In middle C has frequency as 262 Hertz means the wave of 262 Hertz has 262 wave cycles in a second. A wave of 440 Hertz has 440 wave cycles in a second. 

Frequency of Concert A in Different Octave

Difference between Acoustic range, Ultrasound and Infrasound

• Acoustic Range

Human can only perceive the frequency from 20 Hertz - 20,000 Hertz. This range is known as Acoustic Range. 

• Ultrasound

Human cannot perceive sound wave above 20,000 Hertz. It's too high for us. Only the animals can do. Such as dog and bat can hear sound above 20,000 Hertz. Thus sound waves which have frequency above 20,000 Hertz are considered Ultrasound.

• Infrasound

Well, sound waves which have frequency below 20 Hertz are considered as Infrasound. We human cannot perceive it, it's too low. We can't hear it. Whales use Infrasound to communicate among them.