论文部分内容阅读
5/3提升小波变换以其操作整数的特点在定点DSP芯片上实现消噪应用,利用阈值比较的方法更新小波系数,以近似最优估计获得有用信号。本文在TMS320F2812开发板上进行了消噪实验,并将整型操作和浮点操作的算法执行时间做了比对。结果证实,利用5/3整型提升小波变换在DSP芯片上实现阈值消噪,执行效率高,消噪效果明显,满足工程上对精度和实时性的要求。
The 5/3 lifting wavelet transform realizes the de-noising application on the fixed-point DSP chip with the characteristics of its operation integer. The wavelet coefficient is updated by using the threshold comparison method, and the useful signal is obtained by the approximate optimal estimation. In this paper, TMS320F2812 development board noise reduction experiments, and the integer operation and floating-point operation of the algorithm execution time is compared. The results show that using 5/3 integer enhancement wavelet transform to achieve threshold denoising in DSP chip, the implementation of high efficiency, noise reduction effect is obvious, to meet the engineering requirements for accuracy and real-time.