When it comes to soundproofing a music studio or manipulating sound in a car or even a loud room, many people turn to using deadeners. These have been used for many years, come in varying styles and can be used in many different ways. What a deadener does is alter the way a sound frequency reverberates.
One key component to understand is that the lower the frequency you are trying to “deaden,” the thicker the material needs to be. This material can range from CCF or Closed Cell Foam, CLD or Constrained Layer Damper, or MLV or Mass Loaded Vinyl. These can be used in many varying ways depending on what you are using it for, such as noise reduction or resonance reduction.
For example, if using a deadener in a room with high ceilings and wood floors, a deadener will absorb the sound that is being produce and reverberate back as a lower frequency. Musicians often use this method in recording studios or practice spaces in order to dampen the sound of the instruments. Another way it can be used is if you have a loud vehicle. By layering a deadener inside the car, you can dampen any outside noise from entering the vehicle.