This paper designs a CODEC chip of audio signal processing, and the multi-level filter is discussed.
设计了一种可用于语音信号处理的CODEC芯片，讨论了滤波器组的多级实现。
The filter medium inside PGP type filter is a level filter plate, or a combination plate made up of the level filter plate and filter media of other shape.
PGP型号过滤机内部的过滤介质或是一块水平过滤板，或是水平过滤板与其他形状的过滤介质组合而成的组合板。
The filter medium inside PGP type filter is a level filter plate, or a combination plate made up of the level filter plate and filter media of other shape.
PGP型号过滤机内部的过滤介质或是一块水平过滤板，或是水平过滤板与其他形状的过滤介质组合而成的组合板。
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