一种电话语音信号光纤接收机的设计

A Design of Fiber-Optic Receiver of Telephone Audio Signal

随着FTTH技术的广泛应用,在接入网中进行语音信号的光纤传输越来越普遍。在对PCM(Pulse-code modulation)语音传输系统进行论证的基础上,详细讲述了一种基于PCM的电话语音信号光纤接收机的设计,也指出了最佳接收机的设计要点。该文给出了外接扬声器时的语音输出电路的设计方案。

With the widely use of FTFH technology,more and more audio signal is transmitted in optical fiber access network.On the basis of demonstration of audio transmission system of PCM,a fiber-optic receiver of telecommunication audio signal based on PCM is introduced in detail.Main points of optimal optical receiver are also indicated.Scheme of audio output circuit with outside speaker is also described in this paper.