增量调制

基于DSP的语音编码中的模糊增量调制算法的实现

Algorithm of Fuzzy Control Delta Modulation in Speech Coding Based on DSP

讨论模数转换和压缩编码的一种重要方法-自适应增量调制（ADM）的性能。

An important method of analog / digital conversion and compression code which is called adaptive delta modulation ( ADM ) is discussed .

基于DSP的模糊增量调制算法的实现

Fuzzy Control Delta Modulation Based on DSP

本文提出一种基于增量调制（DM）序列的离散傅里叶变换（DFT）结构，它不同于基于脉冲编码调制（PCM）的常规方法。

A new implementation of the DFT based on delta modulation ( DM ) is proposed .

主要讨论了三种语音编码方案，即线性脉冲编码调制（PCM，PulseCodeModulation）、A律PCM和连续可变斜率增量调制（CVSD，ContinuousVariableSlopeDeltaModulation）。

Three kinds of speech encoding schemes , namely , Pulse Code Modulation , A law PCM and Continuous Variable Slope Delta Modulation , are discussed mainly .

本文提出一种新型增量调制（DM）递归数字滤波器，它采用改进的DDA积分器和DDA比例器实现。

A new type of DM digital recursive filter which is implemented with improved DDA integrators and DDA sealers is presented .

介绍了CVSD（连续可变斜率增量调制）的基本原理和基于DSP系统开发语音编码的过程。

The article introduces fundamental principle of the Continuously Variable Slope Delta modulator and describes the process of Speech Encoding based on DSP system .

本文提出了基于DDA器件原理的增量调制递归数字滤波器的实现方案，并做出了实验设备。

This paper presents a practical model of DM recursive digital filters based on principle of digital differential analyser ( DDA ) and gives some experiment results .

增量调制（ΔM）与脉码调制（PCM）兼用的数字电话模拟交换网具有灵活、经济及满意的质量等特点，适用于工业通信系统及其它类似场合。

A telephone network consisting of both △ M and PCM digital coding channels and analog switching is advantageous in flexibility and economization , also it has satisfactory quality , so it is suitable for applications in industrial communication systems and other similar fields .

阐明了增量调制丁类放大器的编码信号及其逻辑关系，最后指出了利用关闭律可以同时抑制间隙零码和间隙躁声，从而提高了CDA的性能。

In the final of the paper , it was pointed out that using closure law , the gap zero yards and the gap noise can be prohibited at the same time , so as to improve the properties of the CDA .

这种系统采用连续可变斜率增量调制（CVSD）来实现语音信号的编码、GFM调制解调方式、FDMA、PLL频率合成器技术。

In this system , continuously variable slope delta modulation ( CVSD ) is used to change the analogy signal into digital , GFM is used to modulate the signal , FDMA , PLL frequency synthesizer .

设计出了二次调制系统：采用连续可变斜率增量调制（CVSD）实现模拟话音信号与数字编码的转换，采用二进制相对相移键控（2DPSK）作为数字调制方式。

A twice modulation is designed : , CVSD was adopted to realize conversion between analog and digital voice signals , 2DPSK was used as the digital modulation mode .

内环是线性增量调制（LDM）；外环是数字压扩增量调制（DCDM），具有量化阶自适应的功能。

The inner loop is of linear delta modulation ( LDM ) and the outer loop is of digital companding delta modulation ( DCDM ) which functions as an adaptive quantize step size control .

在分析和比较了几种话音编码方式的基础上，确定本系统采用连续可变斜率增量调制方式（CVSD）编解码方式，该编解码方式具有较好的抗误码特性及量化信噪比。

Based on analyzing and comparing of several voice coding methods , continuous slope-variable delta modulation ( CVSD ) coding / decoding method is adopted , CVSD has good characteristic of resisting error code and sampling signal noise ratio ( SNR ) .

增量调制系统的间隙零码及其抑制方法

The Gap Zero Code at Delta Modulation System and Its Suppression

基于增量调制序列的语音处理新方法

A new speech signal processing method based on delta modulation sequence

自适应加重网络增量调制理论分析及电路实现

Theoretical analysis and circuit implementation of adaptive weighted delta modulation

增量调制和脉冲调频是两种不同的脉冲调制方式，应用这两种方式可有效地对次声频信号作调制解调。

Increment-modulation and pulse-modulated frequency are two different methods in pulse modulation .

一种连续可变斜率增量调制/解调器的设计

Design of a Continuous Variational Slope Delta Modulator / Demodulator

1024门/线增量调制综合交换机设计原理

Design Principle of 1024 Lines Synthetic △ M Exchanger

音乐信号自适应加重网络增量调制的理论与实现

Theory and practice ot music signal in delta modulation of adaptive weighted network

连续可变斜率增量调制编解码器的设计

Implementation of a Continuously Variable Slope Delta Modulation Codec

自适应增量调制的仿真实现及性能分析

Realization and Performance Analysis for Adaptive Delta Modulation

本文方法也可应用于带有其它反馈网络的增量调制系统。

The method can be applied to delta modulation systems with other feedback networks .

数字调制系统中改进型增量调制的分析与应用

Analysis of Improvement Type of Increment Modulation in Numerical Modulation System and Its Application

GB/T13428-1992增量调制终端设备测量方法

Methods of measurement for the delta modulation equipment

GB/T13427-1992增量调制终端设备技术要求

Performance requirement of the delta modulation equipment

增量调制系统的绝对稳定性

Absolute Stability of Delta Modulation Systems

采用波形自适应增量调制编码方法，研究并解决了语音信号的压缩与加密。

The work uses Adaptive Delta Modulation ( ADM ) to realize speech waveform coding and digital data compression .

连续可变斜率增量调制的语音编码可以在高误码率的情况下正常工作。

CVSD ( Continuous Variable Slope Delta Modulation ) voice coding enables operation at high bit - error rates .