Feature analysis of the maximum frequency waveform from blood flow Doppler signals and its application;
多普勒血流信号最大频率曲线的特征分析及应用
A new method, singularity detection and processing with wavelets, is used to estimate the maximum frequency of Doppler signal.
提出了利用小波奇异点检测提取多普勒信号最大频率的方法 ,并通过对模拟多普勒信号、实际多普勒信号最大频率的估计比较 ,表明小波变换法在最大频率估计中有较高的精度 。
First the envelope of sonogram is recognized by digital estimation of maximum frequency.
通过估计Doppler信号的最大频率以提取声谱图的包络,然后自动计算声谱参数,从而使自动分析结果的准确性和可重复性明显优于人工分析方法。