Yamaha Acoustic Engineering Program - 3. Sound intensity and loudness, decibels

Course overview

In this course, you'll explore the fundamental concepts of sound intensity, loudness perception, and the all-important unit of measurement: the decibel (dB). Whether you're just starting out or looking to deepen your understanding, this course offers a solid foundation in both the physics and psychology of sound.

What You Will Learn

  • The key difference between sound strength (a physical quantity) and loudness (a psychological perception)
  • How the human ear processes sound — and what defines its limits (dynamic range)
  • The basics of exponents and logarithms, essential for understanding decibels
  • The definition of the "decibel"

  • Study time: 30 minutes
  • Exams: Multiple choice

Earn AVIXA RU Credits

After receiving your Certificate of Completion, tap the logo below to visit the AVIXA site. Then, upload your Certificate to receive RU credits.

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