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In the process of ultrasonic testing, the quality of flaw echo signals in A-scan lay a better determinant foundation for location, quantitative and qualitative valuation. Flaw echo signal exited the characteristics of electrical noise, scattering noise in ultrasonic testing, which was sometimes very difficult to eliminate. Considering the distinctness of distribution between defects signals and noises,...
Improving speech quality for a corrupted signal is still an important task for voice communication. This investigation proposes to incorporate thresholding-based algorithm with homogeneous-frame-merged (HFM) approach to adapt a gain factor. In turn, we employ this gain factor to reduce the noise components for a corrupted signal. Firstly, a fixed-length frame is employed to calculate the power of...
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