HighTones Wood Diffuser Panels

HighTones Wood Diffusers are manufactured from 4" wide hardwood planks that are grooved in a sequence of sound scattering wells of varying depths. The planks are installed side by side so the sequence of wells repeats itself across a wide area.




Hardwood Diffuser, 4" wide in varying lengths, is used to produce a diffuse scattering of high frequency sound and control unwanted flutter echo. Grooved channels in the surface are a sequence of 7 elevations based on quadratic theory and the work of German acoustician M.R. Schroeder. Optional slotted back for adding sound absorption.


1" thick hardwood, type and finish selected by the designer. Typical length is a maximum 96" depending on the wood species selected.

HighTones Cross Section Detail

Acoustical Performance

Unlike sound absorption testing (ASTM C423) and sound transmission control testing (ASTM E90), a test for sound diffusion does not exist in the American Society for Testing of Materials (ASTM) standards. The Audio Engineering Society has documented a test for diffusion characteristics. This information document, AES-4id2001 - was used to test HighTones Diffusers. The results indicate that sound diffusion begins to occur at approximately 3150 Hz and continues in higher frequencies throughout the audible spectrum.

HighTones Acoustical Performance Data


Attach with finish nails into wood furring behind each panel.