Space domain complex envelopes: definition and a spatial modulation method.
Space domain complex envelopes: definition and a spatial modulation method.
复制标题
空间域复包络：定义和空间调制方法。
DOI：
10.1121/1.3006385
复制
发表时间：
2009
期刊：
影响因子：
--
通讯作者：
Yang
中科院分区：
文献类型：
--
作者：
Choon;Yang
当人们把声场可视化作为处理噪声源的一种手段时，不需要声场的详细变化。看到震源位置和场的总体变化就足够了。空间中的复杂包络可以提供人们希望得到的足够的信息，因为包络显示了信号的总体变化。换句话说，试图根据复杂的包络来解释声场的总体变化。为了实现这一目标，首先定义了空间复杂包络，然后从理论上发展并验证了一种获取包络的空间调制方法。
When one visualizes a sound field as a means of treating noise sources, a detailed variation of the sound field is not required. It is sufficient to see source locations and overall variation of the field. A complex envelope in space can provide adequate information that one wishes to get because an envelope shows a gross change in signal. In other words, to interpret overall variation of sound fields in terms of a complex envelope is attempted. To achieve this objective, spatial complex envelopes have been defined firstly, and then a spatial modulation method to obtain the envelope has been theoretically developed and verified.