The work uses Adaptive Delta Modulation ( ADM) to realize speech waveform coding and digital data compression. 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。
Performance requirement of the delta modulation equipment GB/T13427-1992增量调制终端设备技术要求
Methods of measurement for the delta modulation equipment GB/T13428-1992增量调制终端设备测量方法
Fuzzy Control Delta Modulation Based on DSP 基于DSP的模糊增量调制算法的实现
Algorithm of Fuzzy Control Delta Modulation in Speech Coding Based on DSP 基于DSP的语音编码中的模糊增量调制算法的实现
The Gap Zero Code at Delta Modulation System and Its Suppression 增量调制系统的间隙零码及其抑制方法
Theory and practice ot music signal in delta modulation of adaptive weighted network 音乐信号自适应加重网络增量调制的理论与实现
CVSD ( Continuous Variable Slope Delta Modulation) voice coding enables operation at high bit-error rates. 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。
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. 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 method can be applied to delta modulation systems with other feedback networks. 本文方法也可应用于带有其它反馈网络的增量调制系统。
Edge jitter of slope overload signal in delta modulation is analyzed theoretically, the average edge jitter noise energy formula is derived and a method of reducing edge jitter is presented. 本文在理论上分析了△调制中斜率过载信号的边沿抖动,导出了平均边沿抖动噪声能量公式,并给出降低边沿抖动的方法。
Experimental results prove the validity of delta modulation. 实验结果证明了Delta调制的可行性。
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). 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。
Absolute Stability of Delta Modulation Systems 增量调制系统的绝对稳定性
Realization and Performance Analysis for Adaptive Delta Modulation 自适应增量调制的仿真实现及性能分析
Three kinds of speech encoding schemes, namely, Pulse Code Modulation, A law PCM and Continuous Variable Slope Delta Modulation, are discussed mainly. 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)。
A new implementation of the DFT based on delta modulation ( DM) is proposed. 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。
An important method of analog/ digital conversion and compression code which is called adaptive delta modulation ( ADM) is discussed. 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。
A new speech signal processing method based on delta modulation sequence 基于增量调制序列的语音处理新方法
Edge Jitter of Slope Overload Signal in Delta Modulation △调制中斜率过载信号的边沿抖动
Theoretical analysis and circuit implementation of adaptive weighted delta modulation 自适应加重网络增量调制理论分析及电路实现
A novel method of double delta modulation for current tracing control 新型双重△调制电流跟踪控制方法的研究
Meanwhile, this paper also refers to the Continuous Variable Slope Delta Modulation ( CVSD) voice coding algorithm, which is adopted in the transceiver. 同时对该设计中采用的CVSD语音编码算法作了简要介绍。
This system realizes the collection, transmission and data processing of earthquake wave signal by means of delta modulation, frequency-shifting keying, frequency-division multiplexing technologies. 采用增量调制、移频键控、频分复用等技术实现地震波信号的采集、传输和数据处理。
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. 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。
A new current tracing control method based on double delta modulation, i.e., combining amplitude delta modulation with time delta modulation, is presented. 提出了一种基于幅值△调制和时间△调制相结合的双重△调制电流跟踪控制新方法。
It is show that the delta modulation method is agreeable to the usual principle of optimum sampling. 结果表明,线性Delta调制方法与最佳取样原则相符合。
Sigma Delta modulation ( SDM) uses the technique of over sampling and noise shaping to achieve high resolution for relatively narrow to medium bandwidth signals. sigma-delta(∑-Δ)模数/数模转换技术利用过采样和噪声整形来达到较高的解析度,它主要用于处理中低频信号。
Sigma Delta modulation is a robust means of implanting the high-resolution Analog-to-Digital converters in a VLSI technology. 在VLSI技术中,sigmadelta调制技术是一种能实现高分辨率A/D转换器的优越方式。