摘要
本文简单介绍了使用线性16bit编码技术的《8路声音pCM电端机》的简单原理。描述了帧结构、加扰电路、帧同步提取电路、锁相环时钟提取电路的工作过程。声音信号的频响为20～20kHz_(-3)^(+1)dB,动态90dB(A计权)以上,谐波失真≤3‰。
In this paper the simple principle of the 8-channel sound PCM electrical terminal equipment using a linear 16-bit coding technique is briefly introduced. The operation process of the frame construction, the interfere-adding circuit, the abstracting circuit by frame synchronization and of the PLL clock abstracting circuit are described. The frequency response of acoustic signal is 20～20kHz (+ 1、-3 dB), the dynamic range is over 90 dB(A) and the harmonic distortion is≤3‰.
出处
《电声技术》
北大核心
1991年第2期7-12,共6页
Audio Engineering
