Sound Isolation or as some might call it sound - proofing, is often the most underestimated aspect of acoustic treatment for a home theater. Many believe that by adding acoustic panels to the walls and or ceiling, all sound can be stopped from entering or exiting the theater space. This is untrue. Acoustic Panels only provide noise control, which refers to treating noise from within a space. More information on this is available in the Acoustic Treatments section of this site. Sound Isolation refers to limiting how much noise reaches the room from the outside and how much of the sound in the room leaks to the outside. A well isolated space must address both sound transmission factors and impact resonances. Acoustic Innovations offers five different solutions to meet these goals all of which can be classified into two categories of functionality:
Sound TransmissionSounds that leave the theater are generally low frequency waves coming from the subwoofer or any speaker with a low cross-over. Since the shapes of these waves are wide with a broad dispersion pattern, they are able to travel well beyond a 2x4 wall structure covered with drywall. The act of sound traveling through a substrate is called sound transmission and the strength in which the sound passes through a material is measured by a rating called STC (Sound Transmission Class). Soundcor Green, Iso-Floor, and Iso-Pads fall under this category.
Impact ResonanceThe most conflicting sound that enters the space is foot fall. When someone is walking on a floor above the home theater room, the energy from their steps is transferred to the floor and from the floor into the sound sensitive area if the home theater structure is not decoupled properly from the rest of the home. Foot Fall can also include other vibrations from the home. These sounds can be very distracting to those watching a movie as not only can it be heard but felt in some cases. Foot Falls are measured by a rating called IIC (Impact Isolation Class) and products such as our Iso-Clips and Iso-Blocs are in this category. Sound Isolation products are measured for performance, differently then Acoustic Panels. Learn more here.