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Description: 语音PCM编码，从输入，在高斯白噪声下传输到译码-PCM voice coding, from the importation of the white Gaussian noise transmitted to the decoder
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Size: 2048 |
Author: eleven |
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Description: 本文是用线形预测编码对图像进行压缩，这种方法是中无损压缩-This article is a linear prediction coding of image compression, this method is in the lossless compression
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Size: 1024 |
Author: fayegyf |
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Description: 数据优化DPCM方法，对一个余弦信号数据进行标量量化-Data Optimized DPCM method, a cosine signal data scalar quantization
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Size: 1024 |
Author: lee |
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Description: 摘 要
文章以空间监控系统为背景,深入研究了JPEG图像压缩标准的实现方法,并基于FPGA对其进行了实现和优化。文中给出了详细的实现方法和优化过程,测试表明达到了很好的效果。
简单介绍了有损静态图像压缩当前有两种比较流行的标准JPEG和JPEG2000。说明了用JPEG方法压缩的原因。
介绍JPEG基本原理：JPEG对灰度图像的压缩处理过程主要包括:图像分割,离散余弦变换(DCT),量化(Quantization),“Z”形排序(Zigzag Scan),差分脉冲编码调制(Differential Pulse Code Modulation,DPCM)对直流系数(DC),行程长度编码(Run-Length Encoding,RLE)对交流系数(AC),霍夫曼(Huffman)编码等。
JPEG标准的特点是离散余弦变换。
比较详细介绍压缩系统的构成和实现。实现提及步骤， JPEG压缩模块设计和编码模块实现细节。
-Abstract
Article in the space monitoring system for the background, in-depth study of the JPEG image compression standard implementation methods and carried out based on FPGA implementation and optimization. In this paper, a detailed method of implementation and optimization of the process, testing showed that to achieve good results.
Easy introduction of harmful static image compression has two kinds of comparisons that the current popular standard JPEG and JPEG2000. Illustrated by the reasons for JPEG compression method.
JPEG introduce the basic principles: JPEG compression of gray-scale image processing include: image segmentation, discrete cosine transform (DCT), quantization (Quantization), "Z"-shaped sort (Zigzag Scan), differential pulse code modulation (Differential Pulse Code Modulation, DPCM) on the DC coefficient (DC), Run Length Encoding (Run-Length Encoding, RLE) of the exchange coefficient (AC), Hoffman (Huffman) coding.
JPEG standard is characterized by discrete
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Size: 523264 |
Author: 压子 |
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Description: This files converts the voice signal to DPCM mode for transmission.
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Size: 1024 |
Author: Rafal |
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Description: 基于Simulink的DPSK的通信系统仿真
Simulink 是MATLAB提供的实现动态系统建模和仿真的一个软件包，它让用户把精力从编程转向模型的构造，为用户省去了许多重复的代码编写工作；Simulink 的每个模块对用户而言都是透明的，用户只须知道模块的输入、输出以及模块的功能，而不必管模块内部是怎么实现的，于是留给用户的事情就是如何利用这些模块来建立模型以完成自己的仿真任务；至于Simulink 的各个模块在运行时是如何执行，时间是如何采样，事件是如何驱动等细节性问题，用户可以不去关心，正是由于Simulink 具有这些特点，所以它被广泛的应用在通信仿真中，利用Simulink 强大的工具箱和其建模的优势建立了常用的DPCM数字电话通信系统仿真模型，对该通信系统进行了模型构建、系统设计、仿真演示、结果显示以及综合性能分析，而且该分析方法同样可推广到其它的通信系统，具有普遍意义。-Simulink-based simulation of Simulink DPSK communication system is provided by MATLAB dynamic system modeling and simulation of a software package that allows users to shift attention from the programming model of the structure, the user save a lot of repetitive coding work Simulink Each module is transparent to the user, the user need only know the module s input, output and functional modules, rather than how the realization of the internal control module, and then left to the user to do is how to use these modules to build model to fulfill its a simulation tasks as Simulink s Ge Ge module at run time how Zhi Xing, Shi Jian yes how to sample, events are the details of how to drive and so on Xing problem, users can not care, Zheng Shi as Simulink those characteristics, so Ta is widely used in communication simulation, using Simulink toolbox and its powerful modeling advantage of the establishment of a common DPCM Digital telephone communication system simulation model, the communica
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Size: 7168 |
Author: wjw |
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Description: Simulink 的每个模块对用户而言都是透明的，用户只须知道模块的输入、输出以及模块的功能，而不必管模块内部是怎么实现的，于是留给用户的事情就是如何利用这些模块来建立模型以完成自己的仿真任务；至于Simulink 的各个模块在运行时是如何执行，时间是如何采样，事件是如何驱动等细节性问题，用户可以不去关心，正是由于Simulink 具有这些特点，所以它被广泛的应用在通信仿真中，利用Simulink 强大的工具箱和其建模的优势建立了常用的DPCM数字电话通信系统仿真模型，对该通信系统进行了模型构建、系统设计、仿真演示、结果显示以及综合性能分析，而且该分析方法同样可推广到其它的通信系统，具有普遍意义。-Simulink-based simulation of Simulink DPSK communication system is provided by MATLAB dynamic system modeling and simulation of a software package that allows users to shift attention from the programming model of the structure, the user save a lot of repetitive coding work Simulink Each module is transparent to the user, the user need only know the module s input, output and functional modules, rather than how the realization of the internal control module, and then left to the user to do is how to use these modules to build model to fulfill its a simulation tasks as Simulink s Ge Ge module at run time how Zhi Xing, Shi Jian yes how to sample, events are the details of how to drive and so on Xing problem, users can not care, Zheng Shi as Simulink those characteristics, so Ta is widely used in communication simulation, using Simulink toolbox and its powerful modeling advantage of the establishment of a common DPCM Digital telephone communication system simulation model, the communica
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Size: 10240 |
Author: wjw |
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Description: THIS R THE PROGRAM FOR PULSE CODE MODULATION AND DPCM WHICH R HAVING THE RESULTS FOR WHICH A INPUT SEQUENCE IS TAKEN AND A CARRIER CODE IS ADDED TO THE MESSAGE SEQU TO GET THIS MODULTION DONE
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Size: 2048 |
Author: shakeel |
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Description: 根据MATLAB的语言组织形式来编排，主要是用来实现预测编码和解码作用-DPCM
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Size: 1024 |
Author: 元昊 |
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Description: 差分脉冲编码调制（）的matlab模块仿真，实现抽样，量化，预测，编码并解码-DPCM
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Size: 2745344 |
Author: 小迪 |
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Description: MATLAB CODES FOR DPCM SPEECH CODING TECHNIQUES
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Size: 10240 |
Author: ranji |
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Description: 用matlab语言实现的将图像的进行dpcm编码算法，之后进行图像重构，进行前后图像的对比。-With matlab language will be dpcm image coding algorithm, after the image reconstruction, the images before and after contrast.
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Size: 392192 |
Author: 周周 |
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Description: PCM和DPCM的调制方式的matlab源代码，仅供参考。-PCM and DPCM in the modulation of the matlab source code for reference only.
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Size: 2048 |
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Description: 本代码由matlab语言编写，实现了jpeg算法，主要为了说明基本的JPEG功能。经过DCT变化，量化，进行DPCM编码，然后之字形扫描AC系数，进行行程（LZW）编码。 显示原始图象和经编码解码后的图象，显示压缩比，并计算均方根误差。-The code consists of matlab language, to achieve a jpeg algorithm, mainly to illustrate the basic functionality of JPEG. After changing DCT, quantization, for DPCM coding, then the AC coefficients of the zigzag scanning, for stroke (LZW) coded. Shows the original image and the encoded decoded image showing the compression ratio, and calculate the mean square error.
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Size: 5120 |
Author: wyd |
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Description: DPCM 预测图形编码的matlab实现方案-DPCM predictive coding matlab graphical implementation
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Size: 56320 |
Author: xiaobo |
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Description: program with matlab simulink TOOL DPCM performs modulaicon
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Size: 9216 |
Author: flaperdv |
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Description: 预测编码的matlab实现代码，DPCM-DPCM prediction coding matlab code
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Size: 6144 |
Author: 念念 |
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Description: 采用MATLAB 实现基本的预测编码DPCM 可以直接读取图像数据-Using MATLAB to achieve the basic DPCM predictive coding can read image data directly
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Size: 2048 |
Author: 陈广进 |
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Description: It is a matlab code for differential pulse-code modulation. and it is intended for 1-D signal.
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Size: 2048 |
Author: ?? |
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Description: 该算法为原始代码，可以提供给读者阅读与学习，掌握初始技能(Optimization of cuckoo algorithm)
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Size: 48128 |
Author: 周大卫 |
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