vocoders

A 600 bps Vocoder and Voice Quality Evaluation Compared with Some Typical Middle and Low Bit Rate Vocoders

一种600bps声码器及其与典型中低速语音编码器的音质对比

DCT-M model for the excitation parameter in low bit rate vocoders

低速率声码器激励参数的DCT-M模型

Improve the Performance of Low Rate Vocoders Using Wavelet Packet Algorithm

用子波包算法改善低速声码器性能

With development of speech coding technology , CELP and MBE vocoders can provide superior voice quality at low data rates .

随着语音压缩技术迅猛发展，码激励线性预测语音编码（CELP）、多带激励语音编码（MBE），都能在低比特率下，获得和市内电话长途电话大致相同的话音质量。

The description precision of the excitation signal greatly influences the quality of reconstructed speech in low bitrate vocoders .

在低速率声码器中，对激励信号的描述直接影响重建语音的质量。

In the environment of speech coding application , especially in military applications , the vocoders quality in noisy environment needs to be improved .

在语音编码的应用环境中，特别是在军事应用中，强噪声环境下声码器性能的改进是一个亟待解决的问题。

A Comparison of Methods For 300 ~ 400b / s Vocoders

300&400b/S声码器方法比较

QCELP Vocoders Design in CDMA System

基于CDMA系统的QCELP声码器设计

Using different feature vectors , the effect of the vocoders differs on speaker dependent continuous speech recognition and speaker independent connected digits recognition .

对于特定人连续语音识别系统和非特定人连接词识别系统，在使用不同的特征矢量时，不同编码器产生的识别效果有比较大的差异。

At last this paper introduces a speech and data multiplexed based on Multi - CPU and VLSI vocoders . The operation principle and characteristics of the Multiplexed are analyzed .

介绍了采用多CPU系统和VLSI声码器为核心的语音数据复接器，分析了系统的工作原理和特点。

In wideband spread spectrum systems , QCELP 8 kbps and 13 kbps voice coders ( vocoders ) are speech coding standards .

QCELP声码器作为话音编码标准已应用到宽带扩频通信系统中，包括8kbps和13kbps的标准。

MELP vocoders utilize mixed pulse and noise as the excitation to elimate the buzzes in traditional LPC vocoders , and add a jitter voicing state to overcome the tonal noise .

MELP声码器采用混合脉冲和噪声激励解决了经典LPC的嗡嗡声的问题；引入了抖动浊音状态以克服音调噪声；