References
- L. R. Rabinar and R. W. Schafer, Digital processing of speech signals, Prentice Hall, 1978
- W. Hess, Pitch determination of speech signals-algorithms and devices, Springer-Verlag, 1983
The Transactions of the Korean Institute of Electrical Engineers D (대한전기학회논문지:시스템및제어부문D)
- Volume 51 Issue 2
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- Pages.86-88
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- 2002
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- 1229-6287(pISSN)
An Estimation method for Characteristic Parameters in a Low Frequency Signal Transformed by High Frequency Signals
고주파 신호에 의하여 변형된 저주파신호에서의 특성변수 추정 기법
Abstract
An estimation method for the characteristic parameters in the low frequency signal is proposed in this paper. A low frequency signal is assumed to be modulated or distorted by high frequency terms. The algorithm proposed in this paper is designed to select set of local maximums in a successive manner, hence it is denoted as the iterative peak picking(IPP) algorithm. The IPP algorithm is operating in the time domain and is using only the comparison operation between two neighboring samples. Therefore, its computational complexity is very low and the delay caused by the computation is negligible, which make the real-time operation possible with economic hardware. The proposed algorithm is verified on the pitch estimation of speech signal and blood pulse estimation.