目前,调频立体声接收机几乎无一例外的都采用开关式立体声解码器,但是这种常规立体声接收机在抗干扰和高保真音质之间存在着很难解决的矛盾.近年来国外研制了新型立体声直接解码器,较好地解决了常规立体声接收机存在的问题.本文将着重分析介绍这种新型立体声直接解码系统的原理和特性.常规立体声接收机存在的问题采用开关式立体声解码器的常规立体声接收机的原理框图如图1所示.10.7MHz中频信号经过鉴频 At present, almost all FM stereo receivers adopt switched stereo decoder, but this conventional stereo receiver has a very difficult conflict between anti-jamming and high-fidelity sound quality.In recent years, a new type of stereo Direct decoder, to solve the problems of the conventional stereo receiver.This paper will focus on analysis and introduction of the principle and characteristics of this new stereo direct decoding system.Generally speaking, the conventional stereo receiver problems using the conventional Stereo Decoder Stereo Decoder The block diagram of the receiver shown in Figure 1. 10.7MHz IF signal frequency