There are a ton of people out looking for soundproof foam or soundproof panels, without realizing that those products aren’t meant for soundproofing! They are mislabeled, and it can be very misleading. While we do recommend foam and panels in many of our noise control solutions, calling them “soundproofing” products is a one way ticket to Disappointment Town, USA.

It’s a sad conversation when we speak to someone who bought a ridiculous amount of foam, and installed it on their wall to try and stop hearing their neighbor’s TV. Before you invest in throwing a bunch of stuff on your wall (especially those useless egg cartons), let’s talk about the difference between soundproofing and acoustics and make sure we talk about the function of foam, and if it will be useful for your specific situation.

Soundproofing blocks sound from getting through a barrier

Soundproofing is all about keeping noises in or out of a space. Soundproofing materials are usually heavy and installed to be airtight. You should be considering soundproofing solutions for problems like:

• Loud yard work or lawn equipment noise blocked from getting into your soundproof home office.
• Block the neighbor’s music or TV with a soundproof party wall.
• The sound of footsteps or furniture moving from the floor above you.
• Designing a soundproof drum room and soundproofing walls in the room.

acoustics improve the sound inside a space

When you need to create higher sound quality and improve how well you can hear something or each other, that’s when you should be looking at acoustic solutions. These materials are designed to absorb sound or reduce echo inside of a space. Acoustics helps with things like:

• Designing a home theater or recording studio with home studio soundproofing materials.
• Improving a home office for frequent video calls
• Reducing echo vs reverb in a large room like an open office, house of worship, or gymnasium
• Using acoustic panels for home theater design

Most of our customers have a mix of these problems and our recommendations include implementing both soundproofing and acoustic materials. So yes, acoustic foam and acoustic panels are excellent products, when used to solve problems they are good to solving. But if you apply the wrong solution to the wrong problem, you’ll end up spending time and money on something that will leave you unhappy.

If you decide that blocking noise from getting in or out is your biggest priority, you should focus on soundproofing solutions and not waste time with “soundproof” foam. Start by identifying ‘weak points’ that are allowing sound through. This is usually the areas that aren’t airtight like doors and windows. From there treat large surface areas that you can hear sound moving through as needed like the ceiling, walls, and the floor.

When choosing and installing materials, remember the 3 keys to soundproofing:

Density - Mass blocks sound. The heavier and denser material is, the harder it is for sound to travel through it.

Limpness - This isn’t as obvious but limp materials block sound better than something just as dense but more rigid. Imagine chucking a tennis ball at a concrete wall, where the ball’s energy is quickly redirected back at you. Sound waves are energy too. Instead, imagine throwing a ball at a heavy comforter. It absorbs the energy and displaces it, so the ball rolls slowly back at you. Science!

Airtight - Sound moves like water, finding the weakest point. If there’s a gap, noise will find its way through. Airtight construction is the best way to stop unwanted sound leaks.

For more information on specific soundproofing projects, give us a call or keep go to our section on materials that actually soundproof.

Acoustic material will help you improve the sound quality and speech clarity in any space, and while it can’t block or stop sound, it can reduce the reverberant noise build up inside a space through sound absorption. It’ll also help reduce the overall noise, with the practical maximum being about 10 decibels.

The most commonly used materials for acoustics are acoustic foam and acoustic wall panels (notice how we didn’t say soundproofing). These products are measured by an NRC rating which uses a 0 to 1 scale to rate how well a material can absorb sound. A material’s sound absorption coefficients at 250, 500, 1000, and 2000 Hz are averaged and then rounded to the nearest multiple of 0.05. An open window has an NRC of 1 because 0% of the sound reflects back into the room, while a brick wall has an NRC of .05 because it absorbs virtually no sound.

Most acoustic foam is very good for absorbing high frequency noise, and thicker foam will start performing better in the mid-frequencies like with our Mela Mute™ Super Wedges, and certain foams like our Mela Mute™ Melamine Foam Corner Bass Trap will absorb low frequencies. Now, polyurethene foam is very cheap, but just like most things in life… you tend to get what you pay for. Our suite of melamine foam is absorptive with a higher NRC sound rating per thickness and is class A fire rated. We have pyramids, linear wedges, and anechoic wedges for different design flexibility.

We like to use foam in situations where it is not going to be subject to any wear and tear. Acoustic foam is commonly associated with recording studios, but that’s partly because people respect the walls of a studio! You don’t have any mail carts bumping the foam or children picking at it. All of our foam is Class A fire rated to meet the code in your space. We also have Mela Mute™waves in clouds and foam baffles, and we have foam baffles that are egg crate shaped, if you want foam that's up and out of the way!

Effective soundproofing and acoustics all comes down to using the right tool for the job. Hopefully we’ve helped you avoid some common soundproofing pitfalls and mistakes. We do our best to simplify sound problems for our customers, but even we’ll admit that it can get complicated. If you have questions about your specific soundproofing project, give us a call and we can walk you through personalized solutions based on your needs.