Active{sup 3} noise reduction
- Institut fuer Angewandte Physik, TH Darmstadt, Schlogartenstr. 7, 64289 Darmstadt (Germany)
Noise reduction is a problem being encountered in a variety of applications, such as environmental noise cancellation, signal recovery and separation. Passive noise reduction is done with the help of absorbers. Active noise reduction includes the transmission of phase inverted signals for the cancellation. This paper is about a threefold active approach to noise reduction. It includes the separation of a combined source, which consists of both a noise and a signal part. With the help of interaction with the source by scanning it and recording its response, modeling as a nonlinear dynamical system is achieved. The analysis includes phase space analysis and global radial basis functions as tools for the prediction used in a subsequent cancellation procedure. Examples are given which include noise reduction of speech. {copyright} {ital 1996 American Institute of Physics.}
- OSTI ID:
- 397380
- Journal Information:
- AIP Conference Proceedings, Vol. 375, Issue 1; Other Information: PBD: Jun 1996
- Country of Publication:
- United States
- Language:
- English
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