2016-08-242016-08-242000-06-20http://hdl.handle.net/10919/72418An improved personal noise attenuation system which attenuates both tonal and broadband sound and which includes a spatially adjustable acousto-electric sensor and attenuation means including both feedback and feed forward components so as to provide a heteronomous attenuation and more complete active noise attenuation and the adjustable acousto-electric sensor is moved to exploit the changing physical characteristics of spatial silent zones in different noise fields.application/pdfen-USPatenthttp://pimg-fpiw.uspto.gov/fdd/72/786/060/0.pdf8852245381/71.6381/71.7381/72G10K11/178G10K11/1786G10K11/1788G10K2210/10G10K2210/101G10K2210/108G10K2210/1081G10K2210/1082G10K2210/128G10K2210/1282G10K2210/3016G10K2210/3025G10K2210/3026G10K2210/3027G10K2210/3031G10K2210/3033G10K2210/30351G10K2210/3042G10K2210/3046G10K2210/3056G10K2210/3214G10K2210/3217G10K2210/3219G10K2210/3221G10K2210/3222G10K2210/506G10K2210/511H04R1/10836078672