How many acoustic panels do I need? | That Sounds Better

How many acoustic panels do I need? | That Sounds Better
If you’re looking to improve the acoustics of a room, you’ll need to know how many panels will have the impact you expect. The answer really depends on the characteristics of your space, as well as what you’d like to achieve.



First let’s consider the purpose of your room, as different types of space need very different amounts of reverberation. Read more about how reverberation works.

In settings such as a concert hall, reverberation can enhance the sound of music. In a classroom, on the other hand, it might make it difficult to communicate clearly. In this case, lots of acoustic panels would have a positive impact on the people who use the space.


The volume of your room (length x width x height) has a major influence on its acoustics. The further apart the surfaces are, the longer the reverberation time will be, as the sound has to travel further to bounce from one to the other.

At the same time, a bigger room is likely to have more hard surfaces. This means you’ll need more sound absorbing materials in order to make a noticeable difference.


Depending on the dimensions, two rooms with the same volume can have different wall surface areas. This is especially true of spaces that aren’t simple cubes, but have walls and ceilings at varying heights.

This means it’s important to consider the shape of your space as well as the size. For spaces with complex shapes, seek advice from an acoustician about how many panels you’ll need.



The materials within a room can make the difference between lots of reverberation and hardly any at all. It’s all about how well the surfaces absorb sound, which is why a carpet shop sounds very different to a school hall.

If you have lots of hard, reflective surfaces like bare walls and wood flooring, you’ll need more acoustic panels to prevent sound from bouncing off and reverberating. If you don’t want to fill your space with soft furnishings, acoustic panels are a simple, stylish and effective way to absorb unwanted sound.

Calculating how many panels you need

If you know the dimensions of your room, we can offer you a guideline acoustic performance calculation for small rooms (below 500m3) to see how many panels you need. All we need is accurate room measurements and some basic information about your space. Get in touch and we’ll send you the forms we’ll need you to complete.

If you’re looking for precise performance information, we recommend you contact a qualified acoustician. They can give you detailed advice based on an assessment of your space, and will tell you exactly how many panels you’ll need. The ANC or IOA are a good place to start.

Alternatively, why not order a few acoustic panels and see what effect they have? We offer free delivery, so you can always order more later on if you’d like to increase the impact.

Explore our shop to find the right panels for you. See our installation guides and videos for step-by-step instructions on how to install your panels, or get in touch if you have any questions.

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