An Adaptive Notch Gain Using an Inverse Notch Filter and a Linear Prediction Filter

SUMMARY This paper proposes an adaptive notch filter that automatically adjusts the notch frequency and notch gain, where they are the null frequency and the depth of the null, respectively. The proposed notch filter consists of an inverse notch filter and a linear prediction filter, and gives an ap...

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Bibliographic Details
Published inElectronics and communications in Japan Vol. 100; no. 2; pp. 58 - 67
Main Authors NAKAMURA, YOUHEI, KAWAMURA, ARATA, IIGUNI, YOUJI
Format Journal Article
LanguageEnglish
Published Hoboken Wiley Subscription Services, Inc 01.02.2017
Subjects
Adaptive filters
Electronics
Gain
Inverse
inverse notch filter
Linear prediction
linear prediction filter
notch filter
Notch filters
notch gain
Notches
Simulation
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Summary:SUMMARY This paper proposes an adaptive notch filter that automatically adjusts the notch frequency and notch gain, where they are the null frequency and the depth of the null, respectively. The proposed notch filter consists of an inverse notch filter and a linear prediction filter, and gives an appropriate filter gain which can eliminate a sinusoidal noise and extract only a wide‐band signal even if they share the same frequency. We compare the capability of the proposed notch filter with traditional methods. Simulation results show that the proposed system improves the SNR in comparison to the conventional methods.
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ISSN:1942-9533
1942-9541
DOI:10.1002/ecj.11935