一种适合地面遥测接收站的语音编码方法

摘要

A voice coding method which is suitable for ground tele‐metring receive station is presented in this paper .Ai‐ming at that the spread spectrum characteristic of simple ground station receiver bandwidth is small ,a 2 .4K bps low rate voice coding algorithm based on the Mixed Excitation Linear Prediction(MELP) is designed .The algorithm reduces speech coding rate by increasing the frame length ,joining multi frames ,and interpolating parameters .The simulation results show that the voice coding method is suitable for the technical requirements of the current ground tele‐metring receive stations ,and it is applicable for other telemetry systems .%论文提出了一种适用于地面遥测接收站的语音编码方法。针对地面简易站扩频接收带宽小的特点，在混合激励线性预测（MELP）算法的基础上，设计了一种2．4Kbps的低速率语音编码算法。该算法通过增加帧长、多帧联合及参数内插等方法降低语音的编码速率。经仿真结果表明该语音编码方法适合目前地面遥测接收站技术要求，实用性强，适合在其它遥测系统中推广应用。