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What is sound? How does human hearing work? Is my workplace too noisy? How do hearing protectors function? Learn this and more here at Sordin Academy – a free video series covering nearly everything related to sound.

Join us, and together, let’s embrace noise!

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Courses

Sound and acoustics

Dive into the world of sound and acoustics! In this playlist, you’ll learn how sound is created, how it travels through different materials, and how to calculate the distance to a lightning strike. We cover concepts like sound level and decibel and explains how frequency impacts pitch and hearing health. Perfect for anyone interested in acoustics, audio technology and the science of sound.

1. What is Sordin Academy?

Curious about how the human hearing works? What is sound and how can we hear it. Learn how noise affects our health and how modern hearing protection can boost safety and productivity at noisy workplaces. Welcome to Sordin Academy!

2. How sound propagates

Ever wondered why there’s no sound in open space? Discover how sound travels through different materials like air, water or metal. Learn why sound moves faster in some mediums than in others and what determines the speed of sound.

3. What is sound?

What exactly is sound, and how is it created? Take a closer look at how sound energy travels through air, water and metal, and how vibrations generate the sound waves we hear. Explore the fascinating science of sound!

4. Thunder and echo

Learn how to calculate the distance to a lightning strike by counting seconds between seeing the flash and hearing the thunder. This episode reveals the difference between the speed of sound and light, and why we see lightning before we hear the thunder. Plus, discover how echoes are created and why some rooms are completely silent.

5. Sound level and decibel

What makes sounds loud or soft? This video breaks down sound level and decibel, explaining how sound pressure is measured. Understand the hearing threshold, pain threshold and how sound intensity decreases with distance.

6. Pitch and frequency

Discover how the frequency of a sound affects its pitch. We’ll explain what frequency is and how it’s measured. Learn about the relationship between wavelength and frequency, and why high-frequency sounds can be more harmful to your hearing.

The human hearing

Explore the fascinating science of human hearing! This playlist lets you dive into how sound travels through the ear and is ultimately perceived by the brain. Learn about the human auditory range and the sounds that lie beyond it. Explore concepts like frequency and hertz, and how they shape our perception. Plus, join our discussion on why some believe we process sound faster than vision.

7. The audible range

What sounds can we hear? This episode explores the human audible range and discusses sounds we can’t hear, like infrasound and ultrasound. Find out how sound levels and frequencies affect our perception of sound.

8. Our fastest sense?

Did you know hearing might be considered faster than vision? A bit surprising, right? This video reveals that our brains, in some sense, perceive sounds faster than vision. You’ll also learn how we can tell the distance to a sound so accurately.

9. How our hearing works

Discover the amazing journey of sound waves in our ears! From the outer ear to the cochlea, learn how sound is converted into electrical signals our brain can understand.

10. The cause of hearing loss

What causes hearing loss? This video examines different risks that may result in permanent hearing impairment.

Workplace noise

Is noise OK at your workplace? In this playlist, we explore various aspects of workplace noise. Learn about legal noise limits, the importance of measuring noise levels at your workplace and how noise affects overall health. A brief introduction to workplace noise and occupational safety – ideal for anyone working in noisy environments.

11. What does legislation say?

Noise at work can be dangerous, which is why there are noise limits to prevent hearing loss. This video covers the relevant legislation and the different types of noise limits.

12. What is A and C weighting?

What are dB(A) and dB(C)? In this episode, we explain these measures of sound pressure and when and why they are used to establish different noise limits.

13. Measuring noise at work

This video highlights signs of excessive workplace noise, and the importance of measuring it. Discover how noise is measured and used as a basis for the right hearing protection.

14. The invisible disability

Even moderate noise can lead to permanent hearing loss, especially with long-term exposure. In this video, we discuss why hearing protection is essential and how noise can impact mental and physical health.

Hearing protection

In this playlist, you’ll discover the difference between passive and electronic hearing protectors and how to choose the best model for various noise environments. Learn how to interpret performance data and see inside a hearing protector to understand its inner workings. Explore electronic features like ambient sound and communication.

15. Hearing protectors – An introduction

It’s crucial to choose the right type of hearing protector. This episode introduces different kinds of hearing protectors and explains the difference between passive and electronic models.

16. What does table data mean?

Understanding performance data for hearing protectors is essential. In this video, we break down key terms and explains how to interpret data to select the best hearing protection for various noise environments.

17. How a passive hearing protector works

Ever wondered how a hearing protector actually works? In this video, we open up an earmuff to have a look inside. Discover how the different parts contribute to the attenuation.

18. How an electronic hearing protector works

Electronic hearing protectors are more than just sound barriers – they come packed with features! This episode dives into ambient sound, communication and Bluetooth® functionality.

19. How does ambient sound support work?

Ambient sound is a feature that lets you hear your surroundings while wearing a hearing protector. In this video, we explain how it works and why it is such an important feature.