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A State Estimation Method for Sound Environment System with Unknown Observation Mechanism by Introducing Fuzzy Inference
Department of Management Information Systems, Prefectural University of Hiroshima, Hiroshima, Japan
Department of Management Information Systems, Prefectural University of Hiroshima, Hiroshima, Japan
- 1 Department of Management Information Systems, Prefectural University of Hiroshima, Hiroshima, Japan
- 2 Department of Management Information Systems, Prefectural University of Hiroshima, Hiroshima, Japan
Intelligent Information Management·Volume 04 (2012)·Pages 115–122·Published 17 July 2012·DOI10.4236/iim.2012.44018
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Abstract
The observed phenomena in real sound environment system often contain uncertainty such as the additional external noise with unknown statistics. Furthermore, there is complex nonlinear relationship between the specific signal and the observations, and it cannot be exactly expressed in any definite functional form. In these situations, it is one of reasonable analysis methods to treat the objective sound environment system as a fuzzy system. In this study, a state estimation method for a specific signal under the existence of an unknown observation mechanism and external noise of unknown statistics is proposed by introducing fuzzy inference. The effectiveness of the proposed theoretical method is experimentally confirmed by applying it to the actually observed data in the sound environment.
KeywordsState EstimationSound Environment SystemUnknown Observation MechanismFuzzy Inference
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