设计了基于模拟滤波器和基于数字锁相放大技术的两种红外气体传感器的信号处理方法。
Two signal processing methods, one based on analog filters, the other based on digital lock-in amplifying technique, are developed and analyzed.
大功率滤波器(38)位于功率放大器(20)的下游并引起线性失真。
A high power filter (38) is located downstream of the power amplifier (20) and causes linear distortion.
一个廉价的内置音频芯片可能有某种在放大器的低通滤波器，避免吸烟本身虽然。
A cheap builtin audio chip is likely to have some sort of low pass filter in its amp to avoid smoking itself though.
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