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ACTIVE NOISE CONTROL WITH ARTIFICIAL NEURAL EXPERTS
Technical Paper
2000-05-0294
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English
Abstract
The aim of the project is related to active control of in-car noise. Basically, an artificially generated sound is superimposed on the unwanted interior noise in order to cancel it out. The canceling signal is obtained by suitable detection and processing of the interior noise so that the unwanted sound perceived by the human observer is considerably reduced. The core of the system consists of an ensemble of “experts' that are specialized in modeling the in-car noise for predefined engine rotation intervals. These are implemented by artificial neural networks, due to their well-known approximation capabilities. Tracking capabilities of the changes occurring in the environment are provided by adaptive weighting of the experts outputs. This action is driven by a discriminator that is able to distinguish between useful sounds (voice, radio, alarm signals) and unwanted noise. Experimental results show the efficiency of the proposed method, indicating significant noise level reduction in a fairly broad frequency range.
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Authors
- R. Suchar - 1) nodes GmbH, Warngauer Strasse 31, 81539, München, Germany 2) BMW AG, Landshuter Str. 56, 84130 Dingolfing, Germany
- B. Schalling - 1) nodes GmbH, Warngauer Strasse 31, 81539, München, Germany 2) BMW AG, Landshuter Str. 56, 84130 Dingolfing, Germany
- I. Ciocoiu - 1) nodes GmbH, Warngauer Strasse 31, 81539, München, Germany 2) BMW AG, Landshuter Str. 56, 84130 Dingolfing, Germany
- A. Brezulianu - 1) nodes GmbH, Warngauer Strasse 31, 81539, München, Germany 2) BMW AG, Landshuter Str. 56, 84130 Dingolfing, Germany
Citation
Suchar, R., Schalling, B., Ciocoiu, I., and Brezulianu, A., "ACTIVE NOISE CONTROL WITH ARTIFICIAL NEURAL EXPERTS," SAE Technical Paper 2000-05-0294, 2000.Also In
References
- Haykin S. 1996 Neural Networks - A Comprehensive Foundation IEEE Press
- Tokhi, M.O. Wood R. 1997 Active Noise Control Using Multi-Layered Perceptron Neural Networks J. of Low Frequency Noise, Vibration and Active Control 16 109 144
- Tokhi, M.O. Wood R. 1997 Active Noise Control Using Radial Basis Function Networks Control Eng. Practice 9 1311 1322