发明名称 |
SPEECH NOISE REMOVAL APPARATUS AND METHOD TO GUARANTEE QUALITY FOR VOIP SERVICE, AND VOIP TERMINAL USING THE SAME |
摘要 |
A speech noise canceling apparatus and method for guaranteeing QoS(Quality of Service) of a VoIP service, and a VoIP(Voice over Internet Protocol) terminal employing the same are provided to measure noise generated between VoIP soft phones by using a PESQ(Perceptual Evaluation of Speech Quality) speech quality measurement algorithm and a voice data code book and cancel its noise. An input unit(122) receives a cancel signal of noise generated during voice call communication from the user. A file/data generating unit(142) generates a reference voice file corresponding to actual voice data in a VoIP network, packetizes the reference voice file, and converts the packetized reference voice file into test voice data. A PESQ measurement unit(140) extracts a PESQ-MOS(Mean Opinion Score) value by applying the reference voice file and the test voice data to a pre-set PESQ speech quality measurement algorithm. A parameter calculating unit(150) calculates a speech quality disincentive value corresponding to the generated noise by using the extracted PESQ-MOS value. A deviation value calculating unit(160) calculates the deviation between the calculated speech quality disincentive value and a pre-set speech quality disincentive value. A network management unit(170) determines an error state of the VoIP network based on the calculated deviation value and removes the speech quality disincentive.
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申请公布号 |
KR100772199(B1) |
申请公布日期 |
2007.11.01 |
申请号 |
KR20060096559 |
申请日期 |
2006.09.29 |
申请人 |
ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE |
发明人 |
KIM, JIN SUL;LEE, HYUN WOO;PARK, YONG MUN;RYU, WON |
分类号 |
H04L12/66;H04L12/26;H04W24/02;H04W24/06 |
主分类号 |
H04L12/66 |
代理机构 |
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