Prime7™ Bifractal Broadband Hardwood Diffuser-Absorber

Overview

Prime7™ BiFractal is an attractive broadband acoustical product that diffuses sound uniformly from all angles of incidence. This product is a quadratic residue design derived from mathematical number theory sequences for phase grate technology, then precisely manufactured to provide what can only be described as a diffuser nested within a diffuser, together providing uniform back-scattering of sound energy within it’s own frequency range without lobing associated with periodic arrays or unwanted absorption due to viscous losses between wells. Finished profiles are solid core materials to prevent resonances and resist damage with standard or customer specified wood species.

applications

Prime7™ BiFractal is an ideal solution for rooms and spaces where single-dimension broadband diffusion is desired. Some applications include:

  • Music Spaces
  • Recording Studios
  • Auditoriums
  • Performing Arts Centers
  • Lecture Halls
  • Churches

  • Thickness (Nominal): 9″
  • Sizes (Nominal): 2’x2′, 2’x4′, 4’x4′
  • Facing: Wood Veneer, Laminates, Custom Finish Facings & Fabric Options Available
  • Finish: Natural, Stain, Lacquer, Paint, Custom
  • Installation Methods: Cleat, Nail, Screw, As Required
  • FSC Certifications: FSC Mix, FSC 100%
  • Fire Performance: Class A

  • Natural Wood Broadband Diffuser that Diffuses Sound Uniformly from All Angles of Incidence
  • “Diffuser Nested Within a Diffuser” – Together They Provide Uniform Backscattering of Sound Energy Within Its Own Frequency Range Without Lobing Associated With Periodic Arrays or Unwanted Absorption Due to Viscous Losses Between Wells
  • Wood Veneer, Laminates and Custom Finish Facings
  • Custom Veneers Available to Coordinate with Designer’s Color Palette
  • FSC Certified Materials Available
  • Finished Diffusers are Constructed and Machined from New, Impact-Resistant, Process-Molded Materials that Prevent Resonances and Resist Damage
  • Up to 10 LEED Credits May Apply With Installation of These Products

Acoustical Data

Acoustical Performance - Diffusion & Scattering

Mid-Range Frequencies
Frequency Range ±0° Angle
293 to 3477 Hz
Frequency Range ±30° Angle
293 to 1985 Hz
Frequency Range ±60° Angle
293 to 1188 Hz
Diffusion (0.20 and Above)
478 Hz to 3477 Hz
Scattering (0.20 and Above)
293 Hz to 3477 Hz
Usable Frequency Range
293 Hz to 3477 Hz
Design Frequency
586 Hz
f-period
578 Hz
High Frequencies
Frequency Range ±0° Angle
2410 to 17200 Hz
Frequency Range ±30° Angle
2410 to 14895 Hz
Frequency Range ±60° Angle
2410 to 8599 Hz
Diffusion (0.20 and Above)
3185 Hz to 17200 Hz
Scattering (0.20 and Above)
2606 Hz to 17200 Hz
Usable Frequency Range
3185 Hz to 17200 Hz
Design Frequency
5213 Hz
f-period
3780 Hz

Finishes

Other Wood Species and Slicing Options Available.