Preprocessing Noise Reduction For Assistive Listening System

Yunus, Nurul Md; Affande, Noor Aliff Noor; Ramli, Roshahliza M.; Noor, Ali O. Abid; Samad, Salina Abdul

doi:10.1109/ice3is54102.2021.9649710

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2022

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“…In DHA to regulate the gain value with different frequency and improve the SN [26]. Preprocessing filter algorithm used to High SNR with low noise speech signal produced in industry environment [27]. www.ijacsa.thesai.org A Wiener filter is used to reduce noise in most improved sub band domain digital hearing aids [7,8].…”

Section: Introductionmentioning

confidence: 99%

Implementation of Modified Wiener Filtering in Frequency Domain in Speech Enhancement

Kumar¹,

Chitra²

2022

IJACSA

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The most common complaint about Digital Hearing Aids is feedback noise. Many attempts have been undertaken in recent years to successfully reduce feedback noise. A wiener filter, which calculates the wiener gain using before and after filtering SNR, is one technique to reduce background noise. Modified Noise Reduction Method (MNRM), a new way for reducing feedback noise Reduction, is presented in this work. In the Modified Noise Reduction Strategy, the advantages of a wiener filter are merged with a decision-directed approach and a twin-stage noise suppression technique The Modified Noise Reduction method can reduce the noise more successfully, according to comprehensive MATLAB programming, investigation, and findings analysis. After being modelled in MATLAB for seven distinct noise types, the SNR of the two architectures is compared.

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