Soundproofing or Sound Absorption – Understanding the Difference

Soundproofing and absorption might seem closely aligned – or even the same thing – but this isn’t the case.

Let’s set this straight immediately:

• Sound insulation (often called soundproofing) prevents sound from entering or leaving a space. It’s used for environments that require strict sound isolation, such as recording studios, cinemas, or apartments located next to noisy neighbours.
• Sound absorption improves the acoustics within a room by reducing reverberation, echo, and background noise. It enhances sound quality within a space, making it ideal for offices, classrooms, and meeting rooms where clarity is important.

But of course, there’s much more to it than that!

This guide will walk you through the key differences between soundproofing and sound absorption, their applications, and how to determine which approach is best for you.

Sound absorption: improving internal sound quality

Acoustic panels are the go-to if you want to control noise without necessarily completely soundproofing a space.

Restaurants, offices, recording studios, and businesses where sound quality matters typically all use acoustic panels. You can also see them installed in homes to control noise and create acoustically comfortable spaces.

Here’s what you need to know:

• Acoustic panelling is typically affixed to ceilings or walls. They enhance a room’s acoustics without necessarily soundproofing it.
• Their primary function is swiftly absorbing sound waves generated within the room, damping noises like conversations or footsteps.
• Acoustic panels allow you to create an environment more conducive to focus and productivity. Acoustically controlled rooms also help keep distractions at bay, which is especially important for schools, universities and workplaces.

Soundproofing: sealing the room from noise

Soundproofing or sound insulation means preventing sound from entering or leaving a room. It goes beyond acoustic control to seal a room’s acoustics.

To start, soundproof panels will usually be manufactured for the floor, featuring wood with a soft insulating underside (similar to carpet underlay). The best will have tongue and groove interlocking joints.

If you want soundproof walls, finding effective off-the-shelf soundproof wall panels is difficult. Soundproofing often requires building out your existing wall with more timber, good insulation and plasterboard at the least.

For the ceiling, you can use soundproof ceiling panels or build more permanent and effective solutions into the ceiling structure.

So, will acoustic panels keep the sound out of my rooms?

Many people grapple with noise issues from loud neighbours or the external environment.

A common question we encounter as a result is, “Will acoustic panels really keep the sound out?”

The short answer: No. Acoustic panels installed in your home or office are not designed to keep external noise out.

Instead, they serve as absorbers, not blockers, of sound. They efficiently soak up sound waves produced inside the room – think of loud conversations or the clack of high heels on hard floors – and help mitigate reverberation (echo) and diminish harsh acoustic peaks. However, they do not prevent external sounds from penetrating your property.

What to consider when soundproofing a room

The best starting point is to figure out why the wall is underperforming. Here are a few questions to ask:

• Is it airborne noise or impact noise you’re seeking to prevent?
• Listen, is it coming through the floor wall or ceiling?
• Are there any vents or gaps the sound is coming through?
• Is the wall/floor solid, or maybe a thin construction with no insulation?

From there, we can consider the following first steps:

Examine the walls: Carefully examine the problematic shared wall or connected space for cracks, electrical outlets, vents, or other openings that allow sound transmission. Any gaps will compromise noise reduction efforts.

Balancing aesthetics and soundproofing: The visual appeal of your acoustic solution matters whether you’re considering acoustic panelling or traditional soundproofing methods. There’s often a trade-off between the solution’s thickness and its sound-blocking capabilities. You’ll need to strike a balance that suits your aesthetic preferences and soundproofing needs.

Space constraints: Soundproofing solutions can sometimes impact a room’s dimensions. For instance, reducing the ceiling height to accommodate soundproofing measures may not always be feasible.

Soundproofing materials: Unlike acoustic panels, soundproofing materials are specifically engineered to block external noise. These materials come in various forms, including a combination of dense insulation, acoustic membranes and specialised drywall or plasterboard.

Fire ratings: Fire safety is paramount when installing any acoustic solution; manufacturers provide fire ratings for their products. Selecting panels with appropriate fire ratings for the space is imperative to meet building regulations.

Key takeaways: soundproofing vs. sound absorption

As we’ve explored, there’s a key distinction between soundproofing and sound absorption through acoustic panels.

Acoustic panels aim to improve a space’s acoustics, mopping up excess reverberation and neutralising unwanted noise.

Soundproofing using sound insulation techniques, requires a more problem-specific solution. Usually aimed at sealing the room from external noise and preventing internal noise from escaping.

Consulting with acoustic experts and choosing professional installation helps ensure you get the right solution for the problem you’re experiencing.

Whether its for a home theatre, a recording studio or a business premises. Give us a call and we will help find the right acoustic solution for you.