RPE-LTP

IP Core Design of RPE-LTP Speech Codec Based on FPGA

基于FPGA的RPE-LTP语音编解码的IP核设计

An Implementation of the RPE-LTP Voice Coder on DSP

RPE-LTP语音编码器在DSP上的实现

With the development of integrated electronic circuit technology , there are more and more available implementation schemes for RPE-LTP speech codec .

但是随着集成电子电路技术的发展，实现RPE-LTP语音编码的可选方案也越来越多。

After testing the IP core which we have designed to implement the RPE-LTP speech codec algorithm , the result is satisfying .

由本课题设计实现的RPE-LTP语音编解码算法的IPCore，取得了很好的试验结果。

This paper firstly describes the present speech compress coding technologies and standards . And the speech compress coding standards RPE-LTP is introduced .

本文首先对当前语音压缩编码技术和标准进行综述，并对RPE-LTP语音压缩编码标准做了介绍。

Using the proposed scheme , as many as 300 bits of secret Chinese characters data per second could be concealed in the RPE-LTP speech signal .

采用该方法可以在规则脉冲激励长时预测编码（RPE-LTP）语音中，每秒隐藏300bits的机密汉字数据。

The Adaptive Differential Pulse Code Modulation ( ADPCM ) algorithm has been used to replace the Adaptive Pulse Code Modulation ( APCM ) algorithm in the RPE-LTP scheme to quantize the selected RPE sequence .

又用自适应差分脉冲编码调制（ADPCM），代替RPE－LTP方案中的自适应脉冲编码调制（APCM）对选择的RPE序列进行的量化编码。