为克服当前的包络分析法需要选择合适的滤波器参数的局限性，提出了一种基于小波变换的包络分析方法。
An envelope analysis approach based on wavelet transform is proposed in this paper to overcome the limitation of current envelope analysis approach in which the fit filter parameter must be chosen.
基于格雷厄姆扫描算法提出声谱图包络主波提取的新方法，并用改进的角度探测方法进行包络特征的识别。
A novel method based on the Graham scan is proposed to extract the chief wave of the spectrogram envelop, while an improved Angle detection method is applied to recognize the features.
得到了该方程的包络孤立波解和包络正弦波解。
And the envelope solitary wave solutions and envelope sinusoidal wave solutions have been obtained.
因此波前的相继位置即为次波的包络面。
Successive positions of the wave front are then given by the envelopes of the secondary waves.
利用升余弦包络调制信号的特点，即基带信号为升余弦波，接收端可以利用这一包络，从中提取定时信息。
A method by using 8031 single-clip microprocessor to get the syntonical bit information is presented, based on the characteristic of the modulated singal in ascending cosine envelope.
研究结果表明，在一定条件下，非线性弹性地基内预应力梁中存在包络孤立波。
It follows that under certain conditions the existence of the envelope soliton in the prestressed beam in nonlinear elastic foundation is possible.
研究结果表明，在一定条件下，非线性弹性地基内预应力梁中存在包络孤立波。
It follows that under certain conditions the existence of the envelope soliton in the prestressed beam in nonlinear elastic foundation is possible.
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