VOICE-CHANNEL FREQUENCY SYNCHRONIZATION
    1.
    发明公开
    VOICE-CHANNEL FREQUENCY SYNCHRONIZATION 失效
    语音信道频率同步

    公开(公告)号:EP0986858A1

    公开(公告)日:2000-03-22

    申请号:EP98924540.2

    申请日:1998-06-04

    IPC分类号: H04B1/10

    摘要: A synchronized frequency generating system (100) comprises a main crystal clock (102), for producing a basic frequency FB, a channel sampling phase locked loop (PLL) unit (104) connected to the main crystal clock, for converting the basic frequency FB into a channel sampling frequency FCS, a voice sampling PLL unit (108) connected to the main crystal clock (102), for converting the basic frequency FB into a voice sampling frequency FVS, a time tracking unit (106) connected to the channel sampling PLL unit (104), for detecting signal characteristics so as to determine a channel sampling frequency phase change value and a frame timing phase change value, and a phase controller (110) connected to the voice sampling PLL. The phase controller (110) receives channel sampling frequency phase adjustment data and determines a voice sampling frequency phase change value. The phase controller (110) provides the voice sampling frequency phase change value to the voice sampling PLL.

    摘要翻译: 一种同步频率产生系统(100),包括:用于产生基本频率FB的主晶体时钟(102);连接到主晶体时钟的信道采样锁相环(PLL)单元(104),用于将基频FB 转换成信道采样频率FCS;连接到主晶体时钟(102)的语音采样PLL单元(108),用于将基本频率FB转换为语音采样频率FVS;时间跟踪单元(106),连接到信道采样 PLL单元(104),用于检测信号特性以确定信道采样频率相位改变值和帧定时相位改变值;以及相位控制器(110),连接到语音采样PLL。 相位控制器(110)接收信道采样频率相位调整数据并确定话音采样频率相位改变值。 相位控制器(110)将语音采样频率相位改变值提供给语音采样PLL。