发明名称 |
Non-intrusive speech signal quality assessment tool |
摘要 |
This invention relates to a non-intrusive speech quality assessment system. The invention provides a method and apparatus for training a quality assessment tool in which a database comprising a plurality of samples, each with an associated mean opinion score, is divided into a plurality of distortion sets of samples according to a distortion criterion; and a distortion specific assessment handler for each distortion set is trained, such that a fit between a distortion specific quality measure generated from a distortion specific plurality of parameters for a sample and the mean opinion score associated with said sample is optimised. The invention also provides a method and apparatus for assessing speech quality in a telecommunications network in which a dominant distortion type is determined for a sample; a distortion specific plurality of parameters are combined to provide a distortion specific quality measure for each sample; and a quality measure is generated in dependence upon the distortion specific quality measure. <IMAGE>
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申请公布号 |
EP1443496(A1) |
申请公布日期 |
2004.08.04 |
申请号 |
EP20030250333 |
申请日期 |
2003.01.18 |
申请人 |
PSYTECHNICS LIMITED |
发明人 |
GRAY, PHILIP;MALFAIT, LUDOVIC |
分类号 |
H04L1/20;G10L25/69;(IPC1-7):G10L19/00 |
主分类号 |
H04L1/20 |
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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