中文摘要：

针对语音取证中相同采样率的语音拼接识别进行研究，着重分析了拼接对噪声特征的影响，提出了基于分数倒谱变换的拼接帧检测算法和语音拼接联合识别模型。实验结果表明，在分数阶因子a为0．2时，分数倒谱变换的拼接帧过零率检测算法优于普通倒谱域方差法，在分数阶因子a为1．2时，分数倒谱变换的拼接帧高频方差检测算法优于普通倒谱域方差法。

英文摘要：

Voice splicing recognition of the same sampling rate is conducted, focusing on analy- zing the influence of stitching on the noise characteristics. In addition, this paper also presents algorithm for mosaic frame detection based on fractional cepstrum transform（FRCT）, propo- sing a model of voice stitching and joint identification . Experimental results show that the cross-zero ratio performance of the FRCT method is much better than the MFCC in noise mo- ment when fractional factor a is about 0.2. Furthermore, when fractional factor a is about 1.2 , the high frequency variance performance of the FRCT method is also better than the MFCC.