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How to Reduce Echo in a Room

How to Reduce Room Echo

Identifying the causes and reducing them in your home or workspace

Author: Eric Dellolio

Last Updated: February 9, 2024

Read Time: 12 Minutes

How to Reduce Room Echo

Identifying the causes and reducing them in your home or workspace

Author:

Eric Dellolio

Last Updated:

February 9, 2024

Read Time:

12 Minutes

Author: Eric Dellolio

Updated: Feb. 9, 2024

Read Time: 12 Minutes

Room echoes are never pleasant, whether you’re trying to have a conversation, get work done, or just enjoy a movie in your own living room. Although your kids might get a kick out of hearing their voices bounce off the walls, chances are, you’d be happier without the echoes. It’s not just limited to your home either — reducing room echoes will drastically improve sound quality in any space, from a high school gymnasium to your place of worship.

If you’ve ever moved into a new home and experienced a noticeable echo before adding furniture, you know how quickly the novelty of an echo wears off. Let’s keep the echoes in the caves. Read on to understand the causes of room echoes and steps to take to reduce them with the most cost effective acoustical panel.

Room echoes are never pleasant, whether you’re trying to have a conversation, get work done, or just enjoy a movie in your own living room. Although your kids might get a kick out of hearing their voices bounce off the walls, chances are, you’d be happier without the echoes. It’s not just limited to your home either — reducing room echoes will drastically improve sound quality in any space, from a high school gymnasium to your place of worship.

If you’ve ever moved into a new home and experienced a noticeable echo before adding furniture, you know how quickly the novelty of an echo wears off. Let’s keep the echoes in the caves. Read on to understand the causes of room echoes and steps to take to reduce them with the most cost effective acoustical panel.

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Popular Echo-Reducing Acoustic Panels


PolyZorbe™ Polyester Acoustic Panel
EcoVerb™ Cotton Fiber Acoustic Panel
BlocknZorbe™ Multi-Purpose Sound Panel

"The Second Skin installation was quick, easy, beautiful and transformative. Now our meeting spaces at Hotel Marcel are as quiet as they are beautiful."

- Bruce B, Hotel Manager

How Echoes Work in Rooms

You clap your hands in the middle of your kitchen and hear what you think is an echo, but it actually isn’t. What you heard was reverberation. Reverberation is a continuous “stream” of noise you hear after the source of the sound stops. Reverberant noise tends to build in a space as noise is added to it, and will result in sound that is “garbled” or hard to understand. An echo is a distinct sound with a start and end that is loud enough to be heard repeatedly above the general reverberation.

It’s easier to understand the difference between a reverberation vs echo when you think about where you’re more likely to encounter them. Reverberation is more likely what you’re hearing in smaller spaces (kitchens, bathrooms, doctor examination rooms). You’re more likely to hear echoes in medium or large spaces (gymnasiums, large conference rooms, banquet halls, or an underground cavern). The reason is that the larger the volume of the space, the longer the reverberation time because low frequency and high frequency sound waves will encounter surfaces less often in large spaces than in small ones.

The good news is that sound absorbing materials will solve problems with both reverberation AND echo. And of all the examples we gave (except for maybe the cavern…), acoustic wall panels are just what the doctor ordered.

 how acoustics work in a room
how acoustics work in a room
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Check out our Timberwool™ Acoustic Panels:


Types of Echo in a Room

When we hear an actual echo in a room, it’s usually one of two types:

Slap Echo

A slap echo (or a slapback echo) is a single echo that can be heard almost immediately after the sound source stops. You’d notice this type of echo when you sharply clap your hands together and then wait to hear the quick response. While Elvis used this technique on some of his tracks in the 1950s, you probably don’t want it in your soundproof home office.

Flutter Echo

A flutter echo is the quick back-and-forth echoing of a single sound trapped between two hard surfaces. You may hear a flutter echo in a gymnasium if a referee loudly blows a whistle.

Second Skin Case Study: Improving HOTEL MEETING ROOM Acoustics

 

 

 

"Installation was quick, easy, and transformative. Now our meeting spaces at Hotel Marcel are quiet and beautiful.

- Bruce B

Primary Causes of Echoes in Rooms

The #1 cause of echoes in a room is a lack of acoustical treatment. Adequate and effective sound absorbing materials will “soften” the sound in a room by reducing the number of hard surfaces. Less hard surfaces means less places for sound to reflect off. Less reflections means less time for the sound to continue to reverberate around the room.

Another potential cause of echo is the misplacement of acoustical treatment. In a room with very specific requirements, like a recording studio, where you place your acoustic materials for walls matters. Another common example many of us are familiar with is a large room with a speaker at the front speaking, like a house of worship. The speaker’s voice is amplified and projected towards the back wall of the room by the sound system. If the back wall is not effectively treated, the speaker’s voice will bounce back and be heard a second time by the audience. In this example, the placement is key because most of the sound is originating from and traveling to one part of the room.

WhAT Rooms are likely to need echo reduction

What types of rooms are likely to have problems with echoes? There are three conditions for lots of room echoes. We call them the “Big 3”, and they’re guaranteed to drag your hometown team to an NBA championship.

Sorry… bad joke. The “Big 3” are the biggest factors causing a room to have bad acoustics.

Tall Ceilings 

Vaulted ceilings have become more and more popular over the years. Taller rooms have more cubic volume, and tend to have more problems with echoes.

Big rooms

See above comment on more cubic volume. When there is a larger amount of open space, there are less surfaces to absorb or reflect sound.

Hard surfaces

Concrete/brick/glass walls, hardwood floors, metal siding — they all reflect noise and increase the likelihood of echoes.

Tall ceilings
Vaulted ceilings have become more and more popular over the years. Taller rooms have more cubic volume, and tend to have more problems with echoes. Warehouse sounds echoing are an example of this.

Big rooms
See above comment on more cubic volume. When there is a larger amount of open space, there are less surfaces to absorb or reflect sound. An example of this is if you are trying to reduce echo and soundproof a room for band practice.

Hard surfaces
Concrete/brick/glass walls, hardwood floors, metal siding — they all reflect noise and increase the likelihood of echoes
. Common in conference room acoustics.

acoustic panels reduce echoes in a large room

There are other factors that play a role such as having too many people in a space or having wacky room dimensions, but the “Big 3” are the biggest indicators in most rooms we run across.

Echo Reduction Techniques in Rooms of Different Sizes

For reducing room echo, you should do the following steps:

    1. Using professional acoustic panels or materials to absorb sound (most important)
    2. Adding everyday absorptive items like caprets, curtians and blankets will help minimally

What we do not recommend is using bookshelves, plants or any other hard surfaces will do little to nothing to reduce echo

Although there is a lot of good information out there on stopping echoes, much of it is mixed with bad advice. When you boil it down, it’s pretty simple — the key to reducing echoes in a room is to break the pathway between hard surfaces with soft, absorbent surfaces. You should be skeptical of any solution that touts it’s effectiveness, but doesn’t accomplish that basic goal. While not every room is the same, we can give you some basic advice based off the size of the room.

echo reduction in your typical small or medium room

Some smaller rooms have higher acoustical needs, like a podcasting room or a soundproof gaming room for example. Solving reverberation problems in smaller spaces tends to be cheaper and easier than in larger ones. Let’s say you’re experiencing some bad reverberations in your TV room and it’s seriously affecting sound quality or you work in a noisy office and are in need of sound proof cubicles. The best way to fix the problem is by adding an acoustical treatment to the room (sound absorbing materials). While the most effective treatment is going to be sound proofing panels, that doesn’t make it the right solution. Fabric wrapped acoustic panels are usually the right answer for a small conference room, but you may not want them in your living room.

There also are sometimes practical solutions that will eliminate the need for specific acoustic treatments, like being intentional about your furniture choices. Or for the cheapest solution… just open the door and let the sound out!

How to reduce Echo in Large rooms

For large rooms like gymnasiums, restaurants, auditoriums, or jobs like improving church acoustics, the best solution is to install acoustic paneling. We recommend Acoustic Pro™ Fabric Wrapped Panels, our specially-designed acoustic panels constructed with a rigid fiber absorber core. The edges are hardened for increased durability, and then the whole panel is wrapped in designer fabric to ensure they look good in any room. Our panels come standard in six shapes, eight colors, and two thicknesses (1” and 2). Customizations are available depending on your specific needs.

Solving sound issues in a large room is more complicated than in smaller rooms. To get a good recommendation, you’ll need to contact us so we can collect some more information from you.

At the end of the day, a room with bad echoing is a room few people want to be in. If you’re going to tackle an acoustics project, start by taking a hard look at the room in question and do your best to soften it up a bit. Not sure where to start? Give us a call! We are happy to help you determine what products are needed, figure out the recommended square footage, and provide you with installation tips. Reach us at 1.800.679.8511 or chat with us by clicking on the icon in the bottom right corner of your screen.

Use Acoustic Panels to Reduce Echo

Using acoustic panels to reduce echo is the best solution for any commercial space, and likely for your home office as well.

For other rooms around the house, the most effective solution is going to be big, fluffy furniture, pillows and blankets. The thicker the better, as thickness and softness are two key indicators of sound absorption. Leather, wood, and metal furniture won’t do much. Skinny little pillows won’t do much either.

 

TL;DR: Professional acoustic materials or materials that are thick and absorptive will have the biggest impact on reverberation and echo reduction.

Helps with Echoes a Little Bit

Just like leather furniture doesn’t absorb much noise, neither do many carpets or curtains. They’re often just too thin to effectively absorb sound. That being said, even a thin carpet is going to be more absorptive than a hardwood floor.

If you’re trying to reduce echoes in your home with carpets or curtains, every little bit helps, but keep your expectations realistic. And give yourself the best chance of success by choosing the thickest versions you can find. Thick curtains will absorb noise better than thin curtains. A thick carpet with a thick carpet pad underneath will absorb noise better than a thinner rug.

Let’s throw one more option into the “helps on the margins” category, which is portraits or works of art. The canvas material is more absorptive than drywall, so it can be helpful to reduce echoes in a room. That being said, if you cover the canvas with a pane of glass… you’ve actually reduced the room’s sound absorption.

 

TL;DR: Everyday items like carpets, curtains, and blankets help a bit on the margins. The thicker the better.

Not Effective for Reducing Echoes

Now we’re in myth busting territory. We really hate to give airspace to “solutions” that actually won’t help with a room’s echoes, but sometimes you can’t just ignore bad information. You’ve gotta take it head on. Let’s make this fast.

Instead of the Big 3, let’s call these the “Meh 3”. No, a bookshelf does not absorb sound and will not reduce echo. The books on a bookshelf will not absorb sound either. Add bookshelves because you need a place for books, not to improve sound quality. No, egg cartons will not reduce echoes. The cartons are paper thin, and will not absorb sound. Do not cover your wall in egg cartons. And finally, no, plants will not reduce echoes. There are no plants that absorb sound. They do look nice though.

We ran through that quickly on purpose. If you say anything enough, some people will believe it. Save yourself the trouble and stick to solutions that work. Time to move on.

 

TL;DR: Don't bet the farm on bookshelves, egg cartons, or plants. If you're lucky, these acoustic myths will deliver a pleasing placebo effect.


How to Reduce Echo in a Room

To get the best results for reducing echo in a room, we recommend reaching out to us for a professional acoustical analysis. With the information provided by you, we consult with our acoustical analyst to get you the exact amount of material you will need to add to your space. The steps to get this done are simple, all you need to do is:

    1. Measure your space and provide our team with the exact dimensions, surface type, and pictures of your space
    2. Select the acoustic panels from our selection you would like to add to your space
    3. Purchase and install the materials!

Although there is a lot of good information out there on stopping echoes, much of it is mixed with bad advice. When you boil it down, it’s pretty simple — the key to reducing echoes in a room is to break the pathway between hard surfaces with soft, absorbent surfaces. You should be skeptical of any solution that touts it’s effectiveness, but doesn’t accomplish that basic goal.

Step 1. Measure Your Space

Getting the right dimensions of the space is very important for getting you the best recommendation on the amount of material you will need. The other thing that affects our recommendation is the types of surfaces you have in your space. Treating a room with hardwood floors versus a room with fully carpeted floors will yield different recommendations.

Lastly, we love pictures! In a perfect world, we would be able to walk around your space, that is not something we can do, so the next best thing we have is pictures and videos. The more the merrier! This way, we can get a good visual understanding of the space and what may be causing you some sound issues.

Step 2. Select the right acoustic panel for you

We carry a wide variety of acoustic panels that help reduce echo and reverb in a space. We understand every space may have different aesthetical needs, so we try to have a panel for everything! Check out our panels and feel free to reach out to our team for advice.

In most cases, two of our top-selling products are our PolyZorbe polyester panels and our Timberwool wood fiber panels. These both provide a great mixture of aesthetics and sound absorption to your space!

Step 3. Install Acoustic Material

Once steps one and two are completed, we will have a recommendation for the number of panels you need for your space, from there it’s time to get to work. We have installation guides on our panels and can help walk you through how to install them if needed!

Frequently Asked Questions on Reducing Echo

What causes echoing in a room?

Echo is caused by loud noises in large spaces with many reflective surfaces. When the sound has room to travel and there is nothing absorbing or stopping the sound from reflecting off the walls, floor, ceiling, and windows, the sound energy is able to return to you as a distinct repetition of the original sound. The noise will slowly lose energy as it travels through the air (6 db every time the distance traveled doubled), until it’s no longer audible over the background noise in the room.

Does wood reduce echo?

It depends, but generally no. A wood floor is a hard surface that will reflect sound, allowing it to continue reverberating in the space. Most wood in a room is going to be reflective like a wood floor. Some specific types of wood have either been formulated or designed for an acoustical result. Examples of wood that will reduce echo are wood wool panels like our Timberwool Wood Fiber Acoustic Panels or a wood diffuser.

How do you reduce echo in a room cheaply?

Reducing echo doesn’t have to be expensive. There are plenty of budget-friendly products like CelluZorbe or EcoVerb that work great. These cost effective acoustical materials can be put on the walls, the ceiling, or used as hidden absorption. They are also easy to install, so you don’t have to worry about paying a professional for installation either.

Does acoustic foam reduce echo?

Yes, definitely! Acoustic foam is a highly absorptive material and is excellent for reducing echo and reverb in a room.

Say Goodbye to Echoes with Acoustic Pro Anchorage Fabric Wrapped Panels

Solving reverberation problems is just a step away. Our standard panels are great for most acoustic projects and versatile enough to reduce echoes in nearly any space. Choose your preferred shape, with square, rectangle, plank, circle, hexagon, and triangle all available to ship within a few days!

  • Designer selected Anchorage fabrics to add beautiful absorption to any space
  • 8 standard colors and 6 shapes
  • Choose 1" or 2" thickness
  • Rotofast anchoring system included for easy install
  • Custom options available. Contact us for details

Need Help Choosing a Fabric Wrapped Acoustic Panel?

By now you’ve got an idea for what acoustic panels can bring to a space, but if you still have questions on how many you need, or how to effectively install them, feel free to reach out. Contact us anytime and our experts can help you find the right materials to elevate the sound in your space.

Have questions about your project?

Call us at 1.800.679.8511