A design of a multi-purpose hydro-acoustic signal preprocessor is introduced.A detail expatiation of the design principle and engineering realization of the modular circuits are given.

• 摘要介绍了一种多用途水声信号预处理机的具体设计，详细阐述了各模块电路的设计原理及工程实现，给出了部分电路的原理图。