What is intensity of sound? What is the range of intensity of audible sound? Differentiate between loudness and intensity of sound.

Intensity of sound is the amount of sound energy passing per second through a unit area, measured in watts per square meter (W/m²).

The audible intensity range for humans is from (threshold of hearing) to (threshold of pain).

Difference between loudness and intensity:

Intensity is a physical quantity, measured in W/m², independent of human perception.

Loudness is a subjective perception, depends on intensity and frequency, and is measured in decibels (dB).

Related Questions:

  1. Explain how sound is produced and propagated.
  2. Describe the characteristics of sound and their significance.
  3. Explain SONAR and its applications.
  4. Define intensity level. Derive the formula for its decibel scale.
  5. Differentiate between noise and music. Explain how noise is a nuisance.
  6. What is acoustics and acoustic protection? How does their study help in the construction of different structures?
  7. What is the audible frequency range? Explain in detail.
  8. What are ultrasounds? Give their uses in different fields of life.
  9. Why does sound require a medium to travel?
  10. What is the effect of humidity on the speed of sound?
  11. What is the difference between audible, infrasonic, and ultrasonic sounds?
  12. What is the relation between frequency and pitch of a sound?
  13. Why do we hear sound more clearly at night than during the day?
  14. Why does sound travel faster in solids than in liquids and gases?
  15. Why are we able to distinguish between two sounds having the same loudness?
  16. Why does a vibrating mobile phone on a wooden table sound louder than when held in hand?
  17. Why do we see a batsman striking the ball before hearing the sound in a cricket stadium?
  18. How much does the intensity level increase when the intensity of a louder sound is double the intensity of the faintest audible sound?
  19. Two singers are singing together, each with an intensity level of 60 dB.
  20. What steps would you take to stop echoing in a large room?