公开(公告)号：US5870397A

公开(公告)日：1999-02-09

申请号：US695280

申请日：1996-08-06

申请人： Pascal Chauffour ,  Bernard Pucci ,  Gerard Richter ,  Maurice Duault

发明人： Pascal Chauffour ,  Bernard Pucci ,  Gerard Richter ,  Maurice Duault

IPC分类号： G10L19/012 ,  H04B1/46 ,  H04L12/70 ,  H04Q11/04 ,  H04T3/17

CPC分类号： G10L19/012 ,  H04Q11/0478 ,  H04B1/46 ,  H04L2012/5616 ,  H04L2012/5647 ,  H04L2012/5652 ,  H04L2012/5671 ,  H04Q2213/13034 ,  H04Q2213/13056 ,  H04Q2213/13166 ,  H04Q2213/13201 ,  H04Q2213/13216 ,  H04Q2213/1329

摘要： A method and an apparatus for removing the silence from the digitalized voice signals conveyed through packets or cells switching networks. The silence samples are neither packetized nor sent over the network but are regenerated at the output of the network. The silence samples generated are white noise samples, where the level is adapted to the background noise of the silence samples received at the input node of the network. For long periods of silence, the white noise level is periodically refreshed to be adapted to the last silence samples received at the input node of the network. The method provides also a control of packet or cell loss. The method uses are not control packets; in the later case, it can be used for ATM networks with AAL1. The method is implemented as a program executed in a Digital Signal Processor located on adapter cards dedicated to voice processing in the network access nodes.

摘要翻译： 一种用于从通过分组或小区交换网络传送的数字化语音信号中去除静音的方法和装置。 沉默样本既不打包也不通过网络发送，而是在网络的输出端重新生成。 产生的静音样本是白噪声样本，其中该电平适应于在网络的输入节点接收的静音样本的背景噪声。 对于长时间的静音，白噪声电平被周期性刷新以适应于在网络的输入节点处接收到的最后沉默样本。 该方法还提供了分组或信元丢失的控制。 该方法使用的不是控制包; 在后一种情况下，它可以用于具有AAL1的ATM网络。 该方法被实现为位于专用于网络接入节点中的语音处理的适配卡上的数字信号处理器中执行的程序。