Explain the characteristics of sound

Sound produced by any means has the following characteristics, namely, loudness, pitch or shrillness, and quality or timbre.
Loudness: The loudness of sound depends on its amplitude. The loudness of sound is proportional to the square of the amplitude. A roar of a lion is louder than a woman’s voice. The loudness of sound is measured in Decibel (db). If loudness exceeds 80 db, then the sound becomes physically painful.
Pitch: The pitch of sound depends on its frequency. If frequency is more, then the pitch or shrillness is more. The pitch of a woman’s voice is more and it is shriller then a man’s voice.
Audible sound: Not all sound produced by vibrating bodies is audible. The human ear can recognise the sounds of frequencies in the range of 20 Hz to 20,000 Hz. This range of frequency of sound is called audible sound.
Some animals like dogs and snakes can hear sounds of frequencies greater than 20,000 Hz.
Infrasonic sounds: Sounds of frequencies less than 20 Hz are called infrasonic sounds.
Ultrasonic sounds: The sounds of frequencies greater than 20,000 Hz are called ultrasonic sounds.