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1. 发明申请

US20080112565A1 METHOD OF INSERTING VECTOR INFORMATION FOR ESTIMATING VOICE DATA IN KEY RE-SYNCHRONIZATION PERIOD, METHOD OF TRANSMITTING VECTOR INFORMATION, AND METHOD OF ESTIMATING VOICE DATA IN KEY RE-SYNCHRONIZATION USING VECTOR INFORMATION 审中-公开
标题翻译：在关键重新同步期间插入用于估计语音数据的矢量信息的方法，发送矢量信息的方法以及使用向量信息的关键重新同步估计语音数据的方法
公开(公告)号：US20080112565A1
公开(公告)日：2008-05-15
申请号：US11745402
申请日：2007-05-07
申请人： TaekJun Nam , Byeong-Ho Ahn , Ki-Hong Kim , Yongick Chung , Sang-Yi Yi
发明人： TaekJun Nam , Byeong-Ho Ahn , Ki-Hong Kim , Yongick Chung , Sang-Yi Yi
IPC分类号： H04K1/00
CPC分类号： G10L19/167
摘要： Disclosed are a method of inserting vector information for estimating voice data in a key re-synchronization period, a method of transmitting vector information, and a method of estimating voice data in a key re-synchronization period using vector information, capable of estimating the voice data that corresponds to a silent period occurring in a key re-synchronization process when an encrypted digital voice is transmitted in a unidirectional wireless communication environment. A transmitter side inserts accumulation information (i.e., vector information) of a voice change direction of the transmitted previous frame in a key re-synchronization frame, using a voice feature that draws a sine wave, when making the key re-synchronization frame for the re-synchronization, and transmits the key re-synchronization frame with the vector information inserted thereto. A receiver side estimates the voice data value in the key re-synchronization period using the accumulation information (i.e., vector information) in the voice change direction and slopes of the received voice data, to minimize the difference between the original voice and the estimated voice.
摘要翻译：公开了一种在密钥重新同步期间插入用于估计语音数据的矢量信息的方法，发送矢量信息的方法以及使用能够估计语音的矢量信息来估计密钥再同步时段中的语音数据的方法当在单向无线通信环境中发送加密的数字语音时，对应于在密钥重新同步过程中发生的静默时段的数据。发射机侧在使用绘制正弦波的语音特征时，在密钥再同步帧中插入所发送的前一帧的语音改变方向的累积信息（即矢量信息），当为重新同步，并且发送具有插入到其中的向量信息的密钥重新同步帧。接收机侧使用语音改变方向上的累积信息（即，向量信息）和所接收的语音数据的斜率来估计密钥再同步周期中的语音数据值，以最小化原始语音和估计语音之间的差异。

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