RESUMO
OBJECTIVES: In recent years, audio signal processing begins its outbreak on a global scale, which has altered the global market and has rapidly extended out as a fundamental design in various industries. Lifting based method is frequently implemented in many applications such as image processing and audio processing because it has some advantages that faster implementation with minimum computational cost. METHODS: In this proposed work, a Novel Lifting based Filter Bank (NLFB) is proposed using a modified variable filter aimed at digital hearing aid devices. This filter bank design has some mandatory constraints, such as hardware complexity, power consumption, and delay. The proposed method is designed with four lifting steps such as split, predict, update and merge to make the perfect reconstruction in analysis and decomposition in synthesis bank. The performance analysis of the proposed method is discussed in this article. RESULTS: The proposed method consumes less power, up to 45mW, and a minimum delay between 85ns and 91.1ns when compared to traditional methods. CONCLUSION: The proposed design output consumes 32 % of minimum hardware components, 12% of low power compared to interpolated filter bank and 6% of delay is reduced using Modified Variable Filter (MVFB).
Assuntos
Auxiliares de Audição , Humanos , Remoção , Processamento de Sinais Assistido por Computador , Processamento de Imagem Assistida por Computador , AlgoritmosRESUMO
High fat diet intake in rats resulted in hyperlipidemia which was evidenced by elevated levels of plasma cholesterol, free fatty acids, triglycerides and increased LDLc/HDLc ratio. Vitamin E (400 mg/kg body wt/day) administration for 60 days prevented the elevations in plasma lipid levels. It reduced LDLc/HDLc ratio, lipid peroxide levels and elevated the level of reduced glutathione (GSH) in hyperlipidemic rats. Vitamin-E was non-toxic.