激光监听信号的小波阈值降噪方法在LabVIEW中的实现

Wavelet Threshold De-Noising Method of Laser Monitoring Signal Realized in LabVIEW

为了更好地对激光监听的语音信号进行降噪处理,提出了一种改进的小波阈值降噪算法。通过图形化编程软件LabVIEW与数学工具软件MATLAB混合编程实现算法,并进行了仿真实验。结果表明,信号处理系统结合了图形化语言的直观易懂与MATLAB强大的计算能力的优点;改进的阈值降噪算法与传统的阈值降噪法相比,降噪效果明显,降噪后信号波形更加平滑,失真度小,语音信号信噪比显著提高。

In order to denoise the laser monitoring signal better, an improved wavelet threshold denoising algorithm was proposed. The algorithm was implemented by the hybrid programming of graphical programming software LabVIEW and mathematical tool software MATLAB, and the simulation experiment was conducted. The results show that, The signal processing system combines the intuitiveness and understandability of graphical language with the advantages of MATLAB’s powerful computing power; Compared with traditional denoising algorithms, the improved algorithm has obvious denoising effect, the signal waveform after denoising is smoother and distortion is less, the speech signal-to-noise ratio is improved greatly.