{"id":249126,"date":"2025-07-27T09:00:00","date_gmt":"2025-07-27T07:00:00","guid":{"rendered":"https:\/\/www.horendgoed.nl\/geen-onderdeel-van-een-categorie\/what-does-amplitude-mean-in-sound\/"},"modified":"2025-07-27T09:01:35","modified_gmt":"2025-07-27T07:01:35","slug":"what-does-amplitude-mean-in-sound","status":"publish","type":"post","link":"https:\/\/www.horendgoed.nl\/en\/products\/what-does-amplitude-mean-in-sound\/","title":{"rendered":"What does amplitude mean in sound?"},"content":{"rendered":"\n

If you\u2019ve ever watched a sound wave \u2013 on an app, at a sound meter or just on TV \u2013 chances are you\u2019ve seen a graph with peaks and valleys. That wave motion says something about the sound. And one of the most important concepts in such a wave, is amplitude<\/em>. But what exactly does it mean? And why is it important when we talk about hearing and hearing protection? <\/p>\n\n

In this blog we explain it to you in full. No complicated theory, just understandable, with examples and practical explanations. Because even though \u201camplitude\u201d sounds like something for physicists or audio engineers: it also touches your ears. Every day. <\/p>\n\n

Sound = vibration<\/h2>\n\n

Back to basics for a moment. Sound is created by vibrations in the air. A voice, an engine, a violin string, a clapping hand \u2013 all cause the air to vibrate. Your ears catch those vibrations and your brain translates them into sound. <\/p>\n\n

Such a vibration can be represented as a wave. That wave goes up and down, with a certain speed (frequency, measured in hertz \u2013 we also wrote a blog about that<\/a>) and a certain height. And that\u2019s where amplitude comes in. <\/p>\n\n

Amplitude = the strength of the vibration<\/h2>\n\n

The amplitude<\/strong> of a sound wave tells something about the strength or intensity of the vibration. Simply put, the greater the amplitude, the louder the sound. You can compare it to the height of waves at sea. Low waves are gently lapping water. High waves? Those are the roaring pounders. <\/p>\n\n

It\u2019s the same with sound. A small amplitude sounds soft, a large amplitude sounds loud. So when you are talking quietly to someone in the living room, your voice has a lower amplitude than when you have to shout loudly at a concert to get above the music. <\/p>\n\n

Amplitude and decibels<\/h2>\n\n

Amplitude is not exactly the same as volume, but they are related. We measure loudness in decibels (dB)<\/a>, and that is based on the amplitude of sound waves. <\/p>\n\n

So a sound with a large amplitude usually also has a higher number of decibels. And as you probably know: starting around 85 dB, sound starts to become harmful to your ears if you are exposed to it for too long. Think of festivals<\/a>, riding a motorcycle without earplugs or hammering a board without hearing protection. <\/p>\n\n

Why amplitude matters to your ears<\/h2>\n\n

Your ears are made to pick up subtle vibrations \u2013 like the rustle of leaves or a soft voice. But loud sounds (i.e., large amplitudes) put a lot of work on the eardrum. If this happens often or for long periods of time, the inner ear can become overloaded. The cilia in your cochlea become damaged, leading to hearing damage or tinnitus<\/a>. <\/p>\n\n

That\u2019s why amplitude \u2013 even if it sounds technical \u2013 is something to take seriously. Especially in a world where loud noises are everywhere: traffic, music, chores, parties, airplanes, gaming, sports games\u2026. Your ears have to put up with a lot every day. <\/p>\n\n

Amplitude on image: what do you see?<\/h2>\n\n

If you watch a sound recording, say in an audio app or while editing a video, you often see a graph with those typical waves. The vertical axis then shows the amplitude: how high or deep the peaks and valleys go. <\/p>\n\n