The proposed architecture adopt recursive pyramid algorithm(RPA)instead of the classical pyramid algorithm(PA), only one low-pass filter and high-pass filter are required to compute all levels.

该结构采用了递归金字塔算法（RPA）取代传统的PA算法。 只用一组滤波器即可完成所有级别的小波运算。

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PA pipes with ninute holes ate used as filter medium in the filter system. The system is of simple construction and will require minimal supervision.

本项研究的过滤系统采用PA微孔管作为过滤介质，结构简单，管理要求不高。

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The acceptance of that product could be a boon for Qualcomm and a bear for a number of RF semiconductor companies, such as those that are key players in the PA, switch and filter space.

FORBES: Qualcomm Announcement Reignites Mobile M&A Possibilities