| The establishment of call centers has been an increasing number of industries emerge. Currently, as 168,400,800 telephone customer service or advice phone, widely accepted by society, call centers have gradually become a one of important way to business advocacy and service.It has been a important way to link customer to corporate.China's speech technology has rapid developed,and related products are also appeared. Voice products have made great progress in help of digital voice and technological progress.Wavelet transform as the frequency changes can be automatically adjusted with the analysis window size of the analytical tools, since the mid-eighties of the last century has been rapid development, such as computer vision, computer graphics, curve design, turbulence, biological medicine, and many other areas to be applied. Through the wavelet theory,we can get the various sub-waves to make appropriate threshold processing, we may process the subwaves by properly threshold algorithrm which set coefficients lower than the threshold to zero and keep the coefficients greater than the threshold. It will restrain effectively the noise.Focusing on the research of voice weather service system, this article gives out a brief introduction of the background of national voice weather service as well as the locally current service situation. Combination of classical wavelet theory, compared to conventional hard threshold and soft threshold method and a new wavelet thresholding approach and the conclusions proved by the MatLab simulation test.Wavelet de-noising system based on the existing hardware and software platform, designed and implemented for the daily operation of automatic speech synthesis software.The article, from which the establishment of speech database, sub-lexical choice, the key modules, to carry out a detailed analysis, and from the process, review the work and put forward a propose directions in more in-depth study. |
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