发明名称 |
Apparatus and method for transmitting/receiving voice data to estimate a voice data value corresponding to a resynchronization period |
摘要 |
<p>Provided are an apparatus and method for estimating a voice data value corresponding to a silent period produced in a key resynchronization process using the sine waveform characteristic of voice when encrypted digital voice data is transmitted in one-way wireless communication environment. The apparatus includes a transmitter that generates a key resynchronization frame containing key resynchronization information and vector information on voice data inserted thereinto and transmits the key resynchronization frame, and a receiver that receives the key resynchronization frame from the transmitter, extracts the vector information inserted in the key resynchronization frame, and estimates a voice data value corresponding to the key resynchronization period. Based on change ratio between slopes calculated using received voice data, it is possible to estimate the voice data corresponding to a silent period, which improves communication quality.</p> |
申请公布号 |
EP2006838(B1) |
申请公布日期 |
2009.12.16 |
申请号 |
EP20080102518 |
申请日期 |
2008.03.12 |
申请人 |
ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE |
发明人 |
NAM, TAEK JUN;AHN, BYEONG-HO;RYU, SEOK;YI, SANG-YI |
分类号 |
G10L19/00;G10L21/02 |
主分类号 |
G10L19/00 |
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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