C. Lakshmi

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This paper proposes to extend the band width of narrow band telephone speech signal by employing feed forward back propagation neural network. There are different types of faster training algorithm are available in the literature like Variable Gradient and Liebenberg-Marquardt. These algorithms are used to train the BPN networks using Neural network tool(More)
In this work,anovel decision based trimmed median filter algorithm for restoring gray scale, and color images of highly corrupted is proposed. It replaces the noisy pixel by trimmed median value when other pixel values, 0's and 255's are present in the selected window and when all the pixel values are 0's and 255's then the noise pixel is replaced by mean(More)
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