Explain with examples ways to overcome human limitations of hearing

Phenomenon and Application of Reflection of Sound Waves

10.3

Phenomenon and Application of Reflection of Sound Waves

Phenomenon of Reflection of Sound Waves

An echo is produced when sound waves are reflected from a hard surface. The echo sounds the same as the original sound but takes some time to reach the listener's ears
An echo can be heard in empty rooms, caves and tunnels

Application of Reflection of Sound Waves

The reflection of different sound waves can be produced when sound waves hit different surfaces
Example : Ultrasound - can be heard by animals such as bats which use it for navigation

Limitations of Hearing

The limited sense of hearing in humans make us unable to hear soft sounds and sounds from a distance

Devices to overcome human limitations of hearing