In our day to day life, we come across different types of sound, and we are well equipped with a mechanism to understand different types of variations in the sound pattern. A mother talking to her kid has a different voice compared to that of the kid. Did you ever think why every person have a different voice?
|Normal Breathing||10 dB|
|Soft Whisper (at 5m)||30 dB|
|Normal Conversation||60 dB|
|Busy Traffic||70 dB|
|Average Factory||80 dB|
The loudness of a sound wave is determined by its association with the amplitude, all types of waves have a certain amplitude. For example, a height of a wave on a calm ocean will be less than 1 foot whereas good surfing waves might be 10 feet or more in amplitude. During a storm, the amplitude might increase to 40 to 50 feet.
This depends on the frequency of vibration of the waves.
If the frequency of vibration is higher, we say that the sound is shrill and has a high pitch. On the other hand, if the sound is said to have a lower pitch then it has a lower frequency of vibration.
A bird produces high pitched sound whereas roaring of a lion is a low pitched sound.
Voice of a woman has a high pitch than that of a man.
These two phenomena seem to be same sometimes but they are not exactly the same. They differ on the basis of their tone quality. The pitch of a sound is our ear’s response to the frequency of sound. Whereas loudness depends on the energy of the wave. In general, the pitch is the reason behind the difference in voice quality of different individuals.
The pitch of a sound depends on the frequency while loudness of a sound depends on the amplitude of sound waves. Amazingly, many musicians, who have been trained are capable of detecting a difference in frequency between two separate sounds that are as little as 2 Hz.