How many Acoustical Panels do we need in our space/venue? What RT (Reverberation Time) should we target?
Answer:
The number and type of panels can be calculated (estimated) by mathematical formula, or by modeling (computer does the math) in software programs. In either case a person or organization with knowledge in acoustics and the latest tools available should be part of your team. The desired RT is one single, but important parameter to consider. Multi-usage venues may also benefit from electro-acoustic enhancement systems.

Should the Acoustical Panels be touching or spaced out?
Answer:
It all depends. In general, careful spacing of panels can add beneficial scattering of certain frequencies. Scattering of energy creates diffusion which in turn creates a smoother room decay. Perform Acoustic panels have hardened edges that enhance scattering, while the main body of the panels provide the needed absorption'.

What is acoustic absorption?
Answer:
Any material that absorbs acoustic energy (sound), such as glass fiber, mineral fiber, wood fiber or closed-cell foam. Glass fiber is inherently fire resistant, but needs to be wrapped so that it does not shed. Acoustical foam can vent toxic fumes when it burns, so make sure any foam products (for use in a public space) are Class-A fire rated (of course more expensive products).

What is acoustic diffusion?
Answer:
A non-flat shape that has enough dimensional variation to scatter sound that strikes it. Acoustic diffusion can be in many forms, such as the more common pyramids and partial “barrel” shapes along with the more modern QRD (digital) shapes. The amount of dimensional variation determines the frequency response of the device. Although they can be useful, very large angular shapes and ceiling coffers are actually more reflectors than diffusion. A small amount of dimensional variation is limited to High-Frequency diffusion.

How do we know if we need generic Acoustical Panels or if we need Tuned Panels in our space/venue?
Answer:
The solution will depend on the construction of your space/venue and the priority program material. a. If your space is built of Gypsum Panels (sheet rock) over framing with padded seating, it likely has a “boomy” sound (from an elevated RT in the Mid-Bass range). This type of room can be optimized (equalized) by the addition of Tuned Panels (with built-in High-Frequency diffusion). See more information on how our Room Tuners can solve this type of acoustic problem at Room Tuners. b. If your space is built of heavy materials (brick, block, concrete, stone), it will need very wide range absorption, with extended Low-Frequency absorption. A standard panel like our EchoControl panels, with extra thickness or spacing off the wall (at least four inches total) can do a good job of solve this type of acoustic problem. See more information on our EchoControl panels. c. Additional Low-Frequency absorption (to “tighten up” the bass) and durability can be provided by a dual density Acoustical Panel such as our ReverbControl panels, with an extra layer of 1/8” high-density fiberglass See more information on our ReverbControl panels.