New Course: Yamaha Acoustic Engineering Program - 4. Sound Intensity and Loudness: Levels and Calculations
Mar 12
The Yamaha Acoustic Engineering Program continues with its fourth course. Building on the previous lesson about sound intensity, loudness, and decibels, this course explores how “level” works in acoustics—connecting sound pressure, sound intensity, and perceived loudness, and explaining how decibel values are defined and used in real-world audio scenarios.
Course Overview
This course explains how acoustic quantities are expressed as levels and why reference values are essential when working with decibels. You will learn how sound pressure level (SPL) is defined, how sound pressure and sound intensity are related, how frequency sensitivity and weighting filters affect perceived loudness, and how to perform practical decibel calculations for real-world audio applications.
Key Topics
- How sound pressure level (SPL) is defined and why reference values matter
- The relationship between sound pressure, sound intensity, and their levels
- How human hearing varies with frequency and why weighting filters are used in sound measurements
- How to perform practical decibel calculations and combine sound sources
Earn AVIXA RU Credits
Complete the course and earn AVIXA RU credits to enhance your professional credentials.

Enroll Today!
Don’t miss the opportunity to elevate your understanding of sound and hearing. Enroll now to begin your auditory journey and explore the fascinating world of sound with us!
WEBSITES
Copyright © 2026 Yamaha Corporation. All rights reserved.
Let us introduce Audioversity Online
Write your awesome label here.
Write your awesome label here.
Let us introduce Audioversity Online
Write your awesome label here.
Write your awesome label here.
