Soundproofing vs acoustic treatment: what to expect from panels

When looking for panels, a lot of people search for “soundproofing panels”. That’s understandable, but the name promises something acoustic panels don’t do. This guide explains the difference between soundproofing and acoustic treatment, so it’s clear what to expect before you buy anything.

Two different problems

Soundproofing, or sound insulation, is about sound travelling between spaces: the neighbours’ voices through the wall, footsteps from upstairs, traffic outside the window. The aim is to stop outside sound getting into the room, and the room’s sound getting out.

Acoustic treatment is about sound inside the room: reverberation, echo, boom. The aim is for sound in the room to be clear and calm – for your voice to be easy to understand on a video call, and for conversation at the table not to turn into a din.

Acoustic panels are for treatment. They don’t soundproof.

Where “soundproofing panels” comes from

In everyday language, “soundproofing” often just means “making things quieter”. A room with panels really does sound quieter, because sounds in it die away faster and everyone speaks more calmly. Hence the popular name. But noise from next door will be almost as loud after the panels go up as it was before.

How soundproofing works

Sound travels through the building’s structure. Stopping it takes three things: mass (heavy walls and floors), airtightness (even a small gap lets a lot of sound through) and decoupling (constructions where one layer doesn’t pass vibration to the next). An acoustic panel is light and porous, and it hangs on the wall with an air gap behind it – it meets none of these conditions.

How acoustic treatment works

An acoustic panel absorbs the sound that reaches it and turns its energy into a tiny amount of heat. As a result, less sound reflects back into the room, reverberation is shorter and voices are clearer. We go into detail on our How we make our panels page.

Absorption works both ways: it reduces reflections of sounds made in the room, but also of sounds that have come in from outside. That’s why noise from next door can be slightly less irritating in a treated room – not because it’s quieter, but because it no longer bounces off the walls as well.

How to tell which problem you have

Ask yourself a few questions:

• Is it what you hear from outside that bothers you – neighbours, the street, other rooms? That’s soundproofing.
• Is it how your own voice sounds, the echo after a clap, the din when several people are talking? That’s reverberation, which panels deal with.
• Do people on video calls say you sound as if you’re in the bathroom? Reverberation.
• Can people on your calls hear the neighbour’s dog? Soundproofing.

Often both problems exist at once. It’s worth separating them and tackling each on its own.

Why foam on the wall doesn’t soundproof

A common idea is to stick foam or panels on the wall you share with a neighbour and hope for silence. Unfortunately, light, porous materials let sound pass through them with little resistance, and the wall keeps carrying vibration. At most, you’ll notice a difference in your own room, which becomes less reverberant, so noise from next door is a little less smeared – but no quieter.

Typical situations

The neighbour plays the piano. Soundproofing. Panels on your side of the wall won’t change it.

Your voice sounds like you’re in the bathroom on calls. Reverberation. Panels in your office solve this very well.

At dinner in the living room, everyone talks louder and louder. Reverberation. Panels and fabrics will cut the din noticeably.

Your child is asleep next door while you watch a film. Mainly soundproofing – doors and walls. Panels in your room will let you turn the TV down, though, because the dialogue becomes clearer, and that helps too.

Your podcast recording picks up street noise. Soundproofing – windows and when you record. If your voice also sounds hollow, that’s reverberation as well.

What helps with outside noise

If your problem is soundproofing, start with the weakest points. These are usually windows and doors: new seals, a draught seal at the bottom of the door, airtight windows with better acoustic ratings. Heavy curtains help a little at a window. Bigger changes, such as extra wall linings or ceilings on isolating hangers, are building work best planned with a specialist. We don’t offer those services.

When to combine the two

Rooms such as home studios and cinemas often need both. The order matters: soundproofing first, because it involves building work and changes the walls, then treatment, which you fit to the finished room. Panels hung on a French cleat are easy to take down and put back after building work.

What to expect from panels

Once the panels are up, the room sounds calmer. Voices on calls are clearer, recordings sound closer, and conversation at the table is less tiring. You can turn the TV down, because the dialogue is easier to follow. It’s a real, noticeable change – but it isn’t silence. Noise from next door will stay where it was.

A short glossary

Reverberation – sound lingering in a room after its source has stopped. Long reverberation smears speech.

Echo – a distinct, separately audible repeat of a sound. In homes it usually appears as flutter echo between two parallel walls.

Reverberation time (RT60) – the time it takes for sound to fall by 60 dB. We use it in the calculator and in our guides as a measure of how much a room rings.

Absorption – a material’s ability to turn sound energy into heat rather than reflect it. That’s what acoustic panels do.

Sound insulation – the ability of a partition – a wall, floor, window or door – to stop sound passing through to the other side. That’s a property of the building, not of panels.

In short

Soundproofing stops sound travelling between rooms and calls for changes to walls, windows and doors. Acoustic treatment sorts out sound inside a room, and that’s what acoustic panels are for. If reverberation, echo and din bother you, panels will make a clear difference. If outside noise bothers you, start by sealing windows and doors, or talk to a sound insulation specialist. In many homes it’s worth doing both, in that order.

If you’re not sure which problem you have, describe your room and what you hear using our contact form. We’ll tell you whether panels make sense in your case.