公开(公告)号：US06741960B2

公开(公告)日：2004-05-25

申请号：US09751302

申请日：2000-12-28

申请人： Hyoung Jung Kim ,  In Sung Lee ,  Jong Hark Kim ,  Man Ho Park ,  Byung Sik Yoon ,  Song In Choi ,  Dae Sik Kim

发明人： Hyoung Jung Kim ,  In Sung Lee ,  Jong Hark Kim ,  Man Ho Park ,  Byung Sik Yoon ,  Song In Choi ,  Dae Sik Kim

IPC分类号： G10C1902

CPC分类号： G10L19/08 ,  G10L2025/935

摘要： The present invention relates to a harmonic-noise speech coder and coding algorithm of the mixed signal of voiced/unvoiced sound using harmonic model. The harmonic-noise speech coder comprises a noise spectral estimating means for coding the noise component by predicting the spectral by LPC analysis method after separating the noise, which is unvoiced sound component from the inputted LPC residual signal using cepstrum. And more improved speech quality can be obtained by analyzing noise effectively using the noise spectral model predicted through cepstrum-LPC analysis method of the mixed signal of voiced/unvoiced sound to the existing harmonic model and then coding the signal.

摘要翻译： 本发明涉及使用谐波模型的有声/无声音的混合信号的谐波噪声语音编码器和编码算法。 谐波噪声语音编码器包括：噪声频谱估计装置，用于通过LPC分析方法在使用倒频谱从输入的LPC残余信号中分离噪声之后的噪声预测频谱来对噪声分量进行编码。 通过将有声/无声音的混合信号的倒频谱LPC分析方法预测的噪声谱模型与现有的谐波模型进行编码，可以有效地分析噪声，从而获得更好的语音质量。