The BYU Acoustics Research has current funding from the National Science Foundation to investigate a new control parameter known as WSSG (weight sum of spatial gradients). WSSG has shown great promise of providing control. Results on plates have proven to be significantly better than with volume velocity.
Please see the attached papers for additional information:
- Active Structural Acoustics Control of Clamped Flat Plates using a Weighted Sum of Spatial Gradiants(PDF)
- Development of a pseudo-uniform structural quantity for us in active structural acoustic control of simply supported plates: an analytical comparison (PDF)
- Active Structural Acoustic Control of Ribbed Plates using a Weighted Sum of Spatial Gradients (PDF)