What is sound
propagate Sound is a phenomenon caused by vibration of material (violin). As the matter vibrates, pressure variations are created in the air around it. The pressure waves in the air. When a wave reaches the human eardrums, a sound is heard
Frequency Ranges
The frequency range is divided into
Infrasonic: 0 to 20 Hz
Audio-sonic: 20Hz to 20 kHz (Human hearing frequency
Ultrasonic: 20kHz to 1 GHz
Hypersonic: 1GHz to 10 THz
Audio-sonic: 20Hz to 20 kHz (Human hearing frequency
Ultrasonic: 20kHz to 1 GHz
Hypersonic: 1GHz to 10 THz