Analog filters can be divided into active filters and passive filters.

模拟滤波器可分为有源滤波器和无源滤波器。

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Two signal processing methods, one based on analog filters, the other based on digital lock-in amplifying technique, are developed and analyzed.

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。

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One SR-5124 typically replaces 4 to 8 tape recorders plus the associated user control software and analog filters, saving space and reducing logistical complexities.

一部典型的SR - 5124能够取代4到8部磁带录音机及其相关的用户控制软件和模拟滤波器，能够节省空间并降低后勤复杂度。

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Alongside the analog oscillators and filters are digital oscillators and effects, plus tunable feedback loops and bit-crushing effects that no other synth has ever had.

ENGADGET: Music Thing: Modern Analog Synths