发明名称 |
Echo canceller and compression operators cascaded in time division multiplex voice communication path of integrated access device for decreasing latency and processor overhead |
摘要 |
A cascaded signal processing arrangement processes digitally encoded voice samples transported over a time division multiplex (TDM) communication path for application to a processor-controlled digital communication device, in particular an integrated access device. Processed voice samples are packetized in accordance with an encapsulating protocol and transmitted as a packetized voice output stream to a destination receiver device. The arrangement includes an echo canceller coupled to the TDM communication path and performing echo cancellation processing on the digitally encoded voice samples. The echo cancellation-processed voice sample signals are compressed by a data compression operator and applied to a packet encapsulating host processor via the TDM communication path. This obviates the necessity of the host processor having to use data bus cycles to download processed digitized voice samples.
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申请公布号 |
US2003174692(A1) |
申请公布日期 |
2003.09.18 |
申请号 |
US20020095375 |
申请日期 |
2002.03.12 |
申请人 |
ADTRAN, INC. |
发明人 |
GHOBRIAL AYMAN;GREER JERRY LYNN;MITCHELL BRUCE EDWARD;MCELROY PAUL GRAVES |
分类号 |
H04L12/56;H04Q11/04;(IPC1-7):H04L12/66 |
主分类号 |
H04L12/56 |
代理机构 |
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主权项 |
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地址 |
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