Enhancing the Noise Immunity in Speech Signal by Using Combined Filtering Technique

[...]there is a reconstruction of both denounced noisy IMFs and real IMFs, and the last signal denounced. [...]the abovementioned methodologies of noise decomposition have certain restrictions: (I) VMD needspredetermined quantities of decomposition and balance parameters; (ii) a threshold should be...

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Bibliographic Details
Published inAnnals of the Romanian society for cell biology Vol. 25; no. 1; pp. 5330 - 5340
Main Authors Shanmugapriya, P, Rajakani, V, Parthasarathy, P, Elavarasu, R
Format Journal Article
LanguageEnglish
Published Arad "Vasile Goldis" Western University Arad, Romania 01.01.2021
Subjects
Acoustics
Algorithms
Cellular biology
Decomposition
Microphones
Noise
Signal processing
Speech
Wavelet transforms
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Summary:[...]there is a reconstruction of both denounced noisy IMFs and real IMFs, and the last signal denounced. [...]the abovementioned methodologies of noise decomposition have certain restrictions: (I) VMD needspredetermined quantities of decomposition and balance parameters; (ii) a threshold should be set in order for noisy IMFs to be identified using the correlation coefficient, reciprocal info and diverse types of permutation entropies. 2PROPOSED METHODOLOGY In this study, a new noise reducing technique is proposed to overcome this problem by using CEEMDAN and LMSAF for underwater acoustic signals. [...]denotation of noisy IMFs through the use of LMSAF threshold selections are resolved. [...]the technique proposed in denoising is more efficient than other similar techniques.
ISSN:2067-3019
2067-8282