| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To obtain an enhanced parameter for assessing a speech quality in a packet switched network, particularly in an audio VoIP network. <P>SOLUTION: An apparatus and method for extracting a set of parameters from a sequence of packets, each packet containing speech data, and assessing the speech quality in accordance with the set of parameters includes the sub steps of; generating a jitter parameter for each of a sequence of stored packets in dependence upon the difference between the transmission time of a stored packet and the transmission time of a preceding stored packet of the sequence and the difference between the intercept time of said stored packet and the intercept time of said preceding stored packet; and generating a consecutive positive jitter parameter for said stored packet in dependence upon the difference between the polarity of said jitter parameter for said stored packet and the polarity of said jitter parameter for any preceding stored packets. <P>COPYRIGHT: (C)2005,JPO&NCIPI</p> |
