一种改进的阈值去噪方法研究

摘要

为了改善语音去噪的效果,提出了一种新阈值去噪方法.新阈值函数是传统硬、软阈值函数的组合,克服了二者的缺点,具有二者的优点.最后用Matlab软件对硬阈值、软阈值和新阈值方法进行仿真分析比较,实验结果表明:新阈值方法取得了较好的去噪效果,比传统方法具有更大的优越性和有效性.%In order to improve speech denoising effect, a new threshold denoising method is proposed. The new threshold function is the combination of traditional hard, soft threshold function .which overcomes the disadvantages of the two, and have the advantages of the two. At last, hard threshold, soft threshold and the new threshold methods are analyzed and compared by MATLAB software. Experiment results show that: the new threshold method obtains better denoising effect,and has more advantages and effectiveness than the traditional methods.