Do Acoustic Panels Work?

The science behind sound absorption: facts vs. misconceptions

It’s easy to underestimate the importance of good acoustics. After all, you can’t see sound; however, acoustic improvements can certainly be heard and felt. In this article, we’ll explore the effectiveness of acoustic panels and how they transform noisy environments into calm and comfortable spaces. We’ll explore the science behind sound absorption and address the question of: do acoustic panels work?

What are acoustic panels?

Acoustic panels are purpose-made, sound-absorbing materials designed to reduce reverberation (echo) inside a room. By absorbing excess sound and minimising reflections, they improve the overall sound quality in a room.

Sound absorbing panels come in various shapes and sizes, but they all have a porous or fibrous structure at the core. Acoustic foam is the most budget-friendly option, but more eco-friendly materials such as mineral wool, wood fibre and even mycelium (a type of fungi) are also available. These materials are cut to size, wrapped in fabric, dyed or painted and installed in all types of spaces worldwide.

How do acoustic panels work?

Acoustic panels are manufactured with specialised insulating materials which make them highly effective at reducing noise. Their fibrous structure traps countless tiny pockets of air, which play a key role in absorbing sound. When sound waves hit the surface of the panel, they create small vibrations within these fibres, converting the sound energy into small amounts of heat. Instead of bouncing off the surface and creating echoes, the sound dissipates, leaving only a fraction to be reflected back into the room.

The performance of an acoustic panel depends on two critical factors: its density and thickness:

• Achieving optimal density is key for effective sound absorption. If panel density is too low, sound waves will not be properly absorbed. If density is too high, soundwaves will reflect off the surface of the panel.
• Thicker wall and ceiling panels are generally better at absorbing a wider range of sound frequencies, achieving better noise reduction results.

Real-world example: acoustic panels in action

Here is a brilliant demonstration of how sound absorption panels can transform a noisy classroom into a comfortable learning environment. The comparison highlights the dramatic reduction in echo and background noise, showcasing the effectiveness of acoustic treatments. Classroom acoustics are crucial for ensuring speech intelligibility and minimising distractions. Watch the video below to hear the difference for yourself!

Benefits of acoustic panels

Improved sound quality

By reducing unwanted noise and reflections, acoustic panels effectively enhance the sound quality within a room. Speech intelligibility is improved meaning users can communicate effectively with ease.

Reduce reverberation and excess noise

Acoustic panels absorb sound waves, effectively reducing the reverberation within a room. This creates a much more comfortable environment for the user and is essential for schools, meeting rooms and restaurants.

Enhanced productivity and focus

Reducing reverberation times has been proven to improve the productivity of students and employees. Acoustic panelling limits how far sound travels, reducing distractions and stress while also enhancing privacy.

Common misconceptions about acoustic panels

Do acoustic panels completely soundproof a room?

It’s a common misunderstanding that acoustic panels provide complete soundproofing and eliminate all noise within a space. Acoustic panels are designed to absorb sound within a room, reducing reverberations.

Acoustic panels do not soundproof a space and prevent noise from entering or leaving a room. This requires additional layers of soundproof plasterboard and other specialist materials to improve the sound insulation of a partition. Ceiling and wall panels are a vital part of noise management but work best in combination with other soundproofing solutions when complete isolation is needed.

Do all acoustic panels perform equally?

Acoustic panels come in a wide range of shapes and designs. The materials, thickness, density and even shape of a panel can significantly impact its performance. Panels designed for mid to high-frequency sounds, like voices, differ from those intended to manage lower frequencies like those produced by mechanical or sports equipment.

Fire, moisture, and impact resistance are all important considerations for different environments, but aesthetics often play the most significant role in choosing the perfect panels for your space.

Are acoustic panels only relevant to music studios?

A misconception is that acoustic panels are only applicable to music studios. The need for sound treatment can arise in any space, and every space can benefit from improved acoustic clarity. Acoustic panels are incredibly versatile and can be applied in various settings. The most common spaces that benefit from acoustic treatment are open-plan offices, schools, restaurants, sports halls and village halls etc.

Are acoustic panels always expensive?

While high-quality acoustic panels can be a great investment, they are often more affordable than people think. Acoustic panels come in a variety of materials, sizes, and price points, making it possible to find an effective and well-designed acoustic solution that fits your budget.

Many commercial benefits can be attributed to a better sound environment. Enhanced speech clarity and less unwanted noise lead to a more enjoyable customer experience. Increased sales, more return customers and fewer complaints are often the results following effective acoustic treatment.

How to choose the right acoustic panel

Selecting the right acoustic panel depends on your space and the unique needs of its user. Identifying the primary driver of your acoustic issues is the best place to start. Many hard, reflective surfaces, multiple noise sources or large open spaces can each contribute to poor interior acoustics. A classroom may require panels to enhance speech clarity, while a busy office might need a soundproof solution to reduce general noise and distractions.

Don’t overlook design, panels come in a variety of styles to match your space’s look, ensuring functionality and appearance go hand in hand. Strategic panel placement, ensuring an even distribution across the room, is key to maximising effectiveness.

Pay attention to the panel’s Noise Reduction Coefficient (NRC) rating, which measures its ability to absorb sound. Higher ratings (closer to 1.0) indicate better sound absorption, making them ideal for spaces with significant noise challenges. Sound absorption classes range from A-E in accordance with the international standard EN ISO 11654. Class A panels offer the best absorption performance over a wide range of frequency.

Consult an acoustic expert for tailored advice on the most effective solutions. Professionals can assess your space, recommend the most suitable products, and manage the supply and installation of panels to achieve optimal results.

The final reflection: do acoustic panels work?

The answer is unequivocally yes! Acoustic panels effectively control reverberation and echo within a space, considerably improving its overall soundscape. Acoustic panels play a crucial role in creating quieter, more productive spaces.

Minimalist design is becoming a popular choice in modern architecture. Acoustic issues are common because these designs often feature an abundance of hard, reflective surfaces. Without careful consideration of your room’s acoustics, your space may suffer from poor sound quality.

Feel free to contact Koru Acoustics for any acoustic queries or alternatively book a free survey for your space today! We offer bespoke designs, a free quotation and expert installation on all acoustic projects. For more information, explore our services or please get in touch.

 

 

References

“Ecophon Immersive Sound Experience”, EcophonTV, Mar 2022, https://youtu.be/rH0DLHvuYfI?feature=shared&t=25.

“BS EN ISO 11654 Acoustics. Sound absorbers for use in buildings. Rating of sound absorption”, The British Standards Institution, Nov 1997, https://nobelcert.com/DataFiles/FreeUpload/EN%20ISO%2011654-1997%20(2000).pdf.