基本信息:
- 专利标题： VOICE ACTIVITY DETECTION SYSTEM AND METHOD
- 专利标题（中）：语音活动检测系统及方法
- 申请号：PCT/EP2007/061534 申请日：2007-10-26
- 公开(公告)号：WO2008058842A1 公开(公告)日：2008-05-22
- 发明人： VALSAN, Zica
- 申请人： INTERNATIONAL BUSINESS MACHINES CORPORATION , VALSAN, Zica
- 申请人地址： New Orchard Road Armonk, NY 10504 US
- 专利权人： INTERNATIONAL BUSINESS MACHINES CORPORATION,VALSAN, Zica
- 当前专利权人： INTERNATIONAL BUSINESS MACHINES CORPORATION,VALSAN, Zica
- 当前专利权人地址： New Orchard Road Armonk, NY 10504 US
- 代理机构： KUISMA, Sirpa
- 优先权： EP06124228.5 20061116
- 主分类号： G10L11/02
- IPC分类号： G10L11/02
摘要：
Discrimination between at least two classes of events in an input signal is carried out in the following way. A set of frames containing an input signal is received, and at least two different feature vectors are determined for each of said frames. Said at least two different feature vectors are classified using respective sets of preclassifiers trained for said at least two classes of events. Values for at least one weighting factor are determined based on outputs of said preclassifiers for each of said frames. A combined feature vector is calculated for each of said frames by applying said at least one weighting factor to said at least two different feature vectors. Said combined feature vector is classified using a set of classifiers trained for said at least two classes of events.
摘要（中）：
输入信号中的至少两类事件之间的区别以下列方式进行。 接收包含输入信号的一组帧，并且为每个所述帧确定至少两个不同的特征向量。 所述至少两个不同的特征向量使用针对所述至少两个事件类别训练的各个预分类器集进行分类。 至少一个加权因子的值基于每个所述帧的所述预分类器的输出来确定。 通过将所述至少一个加权因子应用于所述至少两个不同特征向量来为每个所述帧计算组合特征向量。 使用针对所述至少两类事件训练的一组分类器对所述组合特征向量进行分类。
IPC结构图谱:
| G | 物理 |
| --G10 | 乐器；声学 |
| ----G10L | 语言分析或合成；语言识别 |
| ------G10L11/00 | 不限定于G10L15/00至G10L21/00中单独一组的语音特征的测定或检测 |
| --------G10L11/02 | .检测有无语音信号 |