公开(公告)号：US5553194A

公开(公告)日：1996-09-03

申请号：US951727

申请日：1992-09-25

申请人： Katsushi Seza ,  Hirohisa Tasaki ,  Kunio Nakajima

发明人： Katsushi Seza ,  Hirohisa Tasaki ,  Kunio Nakajima

IPC分类号： G10L19/06 ,  G10L19/08 ,  G10L9/00

CPC分类号： G10L19/08 ,  G10L19/06

摘要： The encoder unit of the vocoder device includes the AR code-book, the MA code-book, and the voice source code-book storing code words each corresponding to a set of the AR, the MA, and the voice source parameters, respectively, which are obtained beforehand by means of the "analysis by synthesis" of a multitude of speech waveform examples and then clustering the resulting respective parameters. The AR preliminary selector, the MA preliminary selector, and the voice source preliminary selector select from respective code-books a predetermined finite number of code words approximating the input speech signal, and in synchronism with the voice source position detected by the voice source position detector the speech synthesizer synthesizes a number of synthesized speech waveforms corresponding to the combinations of the selected AR, MA, and voice source parameters. Comparing the synthesized speech waveforms with the current input speech signal waveform, the optimal code word selector selects the combination of the AR, the MA, and the voice source code words having a minimum distance to the input speech signal waveform.

摘要翻译： 声码器装置的编码器单元包括分别对应于一组AR，MA和语音源参数的AR代码簿，MA代码簿和语音源代码簿，存储代码字， 其通过多个语音波形示例的“综合分析”预先获得，然后对所得到的各个参数进行聚类。 AR初步选择器，MA初步选择器和语音源预选器从相应的代码簿中选择一个预定的有限数量的代码输入语音信号，并与语音源位置检测器检测到的语音源位置同步 语音合成器合成与所选择的AR，MA和语音源参数的组合相对应的多个合成语音波形。 将合成的语音波形与当前输入的语音信号波形进行比较，最佳代码字选择器选择AR，MA和与输入语音信号波形具有最小距离的语音源代码字的组合。