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发明授权
CN1822681B 擦除作为语音数据发送的DTMF信号 有权 转让

擦除作为语音数据发送的DTMF信号
摘要：
本发明的DTMF信号处理装置包括数据分割器单元、DTMF信号成分分析单元、加权处理单元、缓冲器、DTMF信号擦除确定单元和DTMF信号擦除处理单元。数据分割器单元将语音数据分割为多个分割后的语音数据，DTMF信号成分分析单元分析分割后的语音数据是否具有DTMF信号成分。加权处理单元在分析结果指示经分析的分割后的语音数据具有DTMF信号成分时，向此时被分析的分割后的语音数据应用加权值并将产生的语音数据存储在缓冲器中，并且还向先前存储在缓冲器中的过去的分割后的语音数据应用加权值。DTMF信号擦除确定单元基于加权值确定是否擦除存储在缓冲器中的分割后的语音数据。DTMF信号擦除处理单元在确定结果指示数据应当被擦除时，用静音数据或噪声数据替换分割后的语音数据，并且递送替换后的数据。
摘要（英）：

A DTMF signal processing apparatus of the present invention comprises a data divider unit, a DTMF signal component analyzer unit, a weighting processing unit, a buffer, a DTMF signal erasure determination unit, and a DTMF signal erasure processing unit. The data divider unit divides speech data into a plurality of divided speech data, and the DTMF signal component analyzer unit analyzes whether ornot the divided speech data has a DTMF signal component. The weighting processing unit applies a weighting value to divided speech data analyzed at this time and stores the resultant speech data in the buffer, and also applies a weighting value to past divided speech data previously stored in the buffer when the result of the analysis indicates that the analyzed divided speech data has the DTMF signal component. The DTMF signal erasure determination unit determines based on the weighting value whether or not to erase the divided speech data stored in the buffer. The DTMF signal erasure processing unit replaces the divided speech data with either mute data or noise data, and delivers the replaced data when the result of the determination indicates an erasure.

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