To validate the data developed by Theodore J. Schultz, Ph.D., the Industrial Perforators Association contracted the Riverbank Acoustical Laboratories to test his findings. The following is a summary report on the tests conducted in demonstrating the two acoustical capabilities of perforated metals — allowing a maximum amount of sound to pass through it in order for it to be absorbed by material behind it and their capability in a tuned resonant sound absorber to alternate specific, narrow frequency ranges. The objectives of the tests were:

A: Determine which perforated metal specifications would provide a high degree of sound transparency.

b. Demonstrate the theories regarding Tuned Resonant Absorbers set forth by Dr. Schultz.