一种2.4kbps波形插值声码器

A2．4kbps Vocoder Based on Waveform Interpolation

本文描述了波形插值语音分析与合成方法的基本原理和编码技术，并给出一种2．4kbps波形插值声码器的实际结构.该声码器利用提取特征波形及浊/清音成分分离的方法，有效地去除了残差信号中基音波形的冗余度，能在2．4kbps数据率下获得高质量的合成语音．

The basic principles and ceding techniques of the waveform inteoplation for speech analysis and reconstruction are described in this paper. The practical architecture for a 2 .4kbps vocalerbased on waveform interpolation is also given. The redundancy of the pitch-cycle waveform in residual signal is removed effectively by characteristic waveforms extraction and voiced/unvoiced Separation. High quality reconstructed speech can be obtained at 2 .4kbps bit rate.