A sound diffuser refers to a device that you can use to reduce the level of one sound source. As such, you can create an even or diffuse noise. You can find sound diffusers commonly used in recording studios since musicians need them. But aside from recording studios, sound diffusers can also benefit the home, especially when noise reduction is necessary. Sound diffusers are readily available in the market, but you can also make a DIY acoustic diffuser.

DIY Acoustic Diffuser: How Does It Work?

Before you install a DIY acoustic diffuser, it is essential to understand how it works. Two types of sound diffusers are available in the market, emitter and receiver. The first one can gather the sound waves on its surface and then direct them from the source towards the user. Meanwhile, the receiver type needs to get close to a source to capture it. Both DIY acoustic diffusers and the ones you can buy in the market use the depth and angles of the panel’s planes, scattering different sound frequencies in all directions.

Where to Use Sound Diffusers

Sound diffusers can be used in the following places:


You can find sound diffusers in cinemas because they can improve the sound quality. They are commonly placed inside the auditorium to spread sound evenly around the room. Usually, they are made from porous foam, which can be adhered to walls, ceilings, or floors. 


As mentioned, you can also use acoustic diffusers at home. They can be made from wood, rubber, foam, and other materials. Any of them can help you create soothing effects in sound systems, such as reducing the level after the tweeter.

Recording Studio

Spray foam is one of the most commonly used materials for sound diffusers in recording studios. It is because of the material’s transparent and lightweight qualities, making it easy to install.

How to Make A DIY Acoustic Diffuser

Are you now ready to create your own sound diffuser? Here are the materials you need:

4x 8’x4“x1″ wooden boards 

2 yards 60″ wide fabric

Roxul Mineral-Rockwool 60 Insulation

Wood glue 40x 1-5/8″

wood screws 

Staples 4x 330ml cans PBR Tools

  1. Cut the wood.

Make sure to have 8-foot long wood boards (2’x4′) panels. Once you have them, you may now cut two boards in half (4′ each piece) and two boards in quarters (2′ each piece). When measuring the acoustic diffusers, the measurement must be 4′ and 2′ respectively per cut on each board.

  1. Build the frames.

Gather all the materials and tools you need. Then, place your wood up to each other with the 2′ pieces on the inside. The total length of each panel will be 4′. Once done, start drilling the two pilot holes at the top and bottom of each 4′ piece. Add wood glue for extra strength.

  1. Reinforce the frames.

You need to reinforce the overall strength.

  1. Cut the insulation to size. 

The next step is to purchase Roxul Mineral-Rockwool 60 2’x4’x2 ” panels.

Sound diffusers are essential because they can help you create a better sound on where you will place them. You can buy diffusers from the market or create DIY acoustic diffusers because they also work as what sound diffusers should do. When you make them, you can save more money since you may prefer cheaper materials that produce the same quality you are looking for.