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PCM
说明: 利用Matlab仿真脉冲编码调制(PCM)及A律、μ律PCM对声音进行压缩编解码过程。
脉冲编码调制(PCM,Pulse Code Modulation)是一种将模拟语音信号转换成数字信号的编码方式。波形编码器的作用是对采样后的信号样本进行量化和编码。从数学上来看,量化过程就是把一个连续幅度值的无限数集合映射成一个离散幅度值的有限数集合,编码就是用一组二进制数来表示这些映射后的有限数。国际标准化的PCM采用折叠二进制码,符合长途电话质量。根据量化方法的不同,PCM可分为均匀量化PCM和对数PCM两大类,对数PCM中,2Aμ律和律编码都已被定为国际标准。(Matlab simulation using pulse code modulation (PCM) and the A law, μ law PCM codec for voice compression process.
Pulse Code Modulation (PCM, Pulse Code Modulation) is an analog voice signal into digital signal encoding. The role of the encoder waveform is sampled signal sample quantization and coding. From the mathematical point of view, the process is to quantify the magnitude of the value of a continuous set of infinite number of maps into a finite number of discrete set of amplitude values , encoding is to use a set of binary digits, said after a limited number of these maps. By folding the International Standardization of PCM binary code, in line with long-distance telephone quality. According to the different quantitative methods, PCM can be divided into uniform quantization PCM PCM and the number of two categories, on the number of PCM in, 2Aμ law and legal codes have been designated as international standards.)
- 2011-04-14 12:06:33下载
- 积分:1
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Lucas-Kanade-1
经典光流算法LK改进算法的matlab源码。希望对大家有帮助。(LK classical optical flow algorithm improved algorithm matlab source code. I hope to help.)
- 2011-07-21 17:01:25下载
- 积分:1
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qqqq
基于小波变换的图像合成,用matlab实现(Image fusion base on small waves,Completed by matlab)
- 2015-04-03 14:44:32下载
- 积分:1
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matlab
说明: 信号二维到达角及计划参数估计估计 矩阵束法(Two-dimensional arrival angles and signal parameter estimation scheme is estimated Matrix Pencil Method)
- 2011-02-25 10:33:43下载
- 积分:1
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sharpness-code
Color Image Enhancement Techniques:
A Critical Review
Abstract
Image enhancement is one of the key issues in high quality pictures such as digital camera and HDTV. Since
Image clarity is very easily affected by lighting, weather, or equipment that has been used to capture the image.
These conditions lead to image may suffer from loss of information. As a result, many techniques have
developed known as image Enhancement techniques to recover the information in an image. This paper presents
a literature review on some of the image Enhancement techniques for color image enhancement like, Contrast
Stretching, Histogram Equalization and its improvement versions, Homomorphic Filtering, Retinex, and
Wavelet Multiscale Transform. Comparison of all the techniques concludes the better approach for its future
research
- 2013-09-21 18:27:21下载
- 积分:1
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apf-controllers
apf with different controllers
- 2013-09-22 19:05:51下载
- 积分:1
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Programs-with-Matlab
Programs using Matlab language that can be used as exercices
- 2013-09-28 21:58:05下载
- 积分:1
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Angle-Analysis
Change in Angle, Feature of Shapes & Characters
- 2012-09-23 13:47:15下载
- 积分:1
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liti5
蒙特卡洛仿真。供个人学习研究的几个小程序。(Monte Carlo simulation. For individual learning research program.)
- 2012-06-11 13:03:48下载
- 积分:1
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Rayleigh-fading-channel-with-Alamouti-Space-Time-
Rayleigh fading channel with Alamouti Space Time Block Coding for matlab simulation
- 2011-10-07 00:40:14下载
- 积分:1