| 摘要 |
The invention relates to an apparatus and method for speech quality assessment in a cellular communication system. The apparatus ( 113 ) comprises a second receiver ( 117 ) which receives encoded speech data for a speech segment from a remote speech source over an air interface voice channel ( 111 ) of the cellular communication system. The apparatus ( 113 ) further comprises a first receiver ( 115 ) which receives a reference speech sample corresponding to the speech segment from a remote reference speech sample source. The first and second receivers ( 115, 117 ) are coupled to a speech processor ( 119 ) which determines a speech quality characteristic by comparison of the reference speech sample and the encoded speech data. The encoded voice data may be transmitted over an air interface voice channel ( 111 ) whereas the reference sample may be transmitted over a first air interface channel ( 105 ) which specifically may be a data channel having a very low bit error rate. The invention may allow an effective, flexible and distributed speech assessment.
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