1. The cancellation of repetitive noise and vibration;chaplin;INTER-NOISE and NOISE-CON Congress and Conference Proceedings,1980
2. Electronic Sound Absorber
3. Frequency-domain adaptive filtering;ferrara;Adaptive Filters,1985
4. Selective active cancellation system for repetitive phenomena;ziegler;Google Patents,1989
5. Simultaneous measurement of impulse response and distortion with a swept-sine technique;farina;Audio Engineering Society Convention,2000