发明名称 |
Speech coding |
摘要 |
A wireless telecommunications system comprises a mobile station (MS) and a network. The mobile station has a multi-rate speech encoder which produces an encoded speech signal which is transmitted to the network. The network has a multi-rate speech decoder which decodes the encoded speech signal to produce a decoded speech signal. The network also comprises a signal analyser which measures speech characteristics of the decoded speech signal to produce speech characteristics information and an up-link mode control unit which receives the speech characteristics information and produces a mode command. The mode command is transmitted by the network to the mobile station where it is used to control the speech encoding bit rate of the multi-rate speech encoder.
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申请公布号 |
US2004098251(A1) |
申请公布日期 |
2004.05.20 |
申请号 |
US20030311657 |
申请日期 |
2003.12.16 |
申请人 |
VAINIO JANNE;MIKKOLA HANNU;ROTOLA-PUKKILA JANI |
发明人 |
VAINIO JANNE;MIKKOLA HANNU;ROTOLA-PUKKILA JANI |
分类号 |
G10L19/14;G10L19/18;H04L1/00;(IPC1-7):G10L19/00 |
主分类号 |
G10L19/14 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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