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用于计算3G基站峰均比压缩引擎的抵消脉冲；并附有阈值计算的Matlab代码。-3G base stations used to calculate the compression engine than the offset peak pulse together with the threshold value of the Matlab code.
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JPEG压缩编码的主要步骤有：
1.通过前向离散余弦变换减少图像数据相关性；
2.利用人眼的视觉特性队DCT系数进行量化；
3.使用查分脉冲编码调制对直流系数进行编码；
4.对交流系数进行Z形扫描，使用形成长度编码队交流系数进行编码；
5.熵编码器对上述描述符进行熵编码。-JPEG compression encoding of the main steps are:
1.forward discrete cosine transform to reduce the im
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Abstract— We propose a simple speech compression algorithm
using subband division and ADPCM (Adaptive Differential
Pulse Code Modulation) algorithm. Although speech data are
stored in a semiconductor memory device, its capacity and the
availa
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Abstract— We propose a simple speech compression algorithm
using subband division and ADPCM (Adaptive Differential
Pulse Code Modulation) algorithm. Although speech data are
stored in a semiconductor memory device, its capacity and the
availa
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Abstract— We propose a simple speech compression algorithm
using subband division and ADPCM (Adaptive Differential
Pulse Code Modulation) algorithm. Although speech data are
stored in a semiconductor memory device, its capacity and the
availa
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pcm编码们以话音信号为例来说明数字通信的基本原理。人类的语音信号的频率范围在300—3 400 Hz之间，留有一定余地，设话音信号最高频率为4 kHz，则根据奈奎斯特采样定理，将话音信号数字化所需要的采样频率为8 kHz，即采样周期为l25 US 0再把每个采样值用8位二进制数字编码，就把模拟话音信号转换成了数字信号。因此，一路话音信号转换成数字信号以后，比特率为8 x8 000 b／s：64 kb／s。将模拟信号用脉冲信号进行采样使其离散化并进行数字编码的过程称为脉冲编码调制，简称PCM，这
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包括最后计算压缩图像的峰值信噪比和压缩效果的源码,相参脉冲串复调制信号，ldpc码的编解码实现。- Including the final calculation of the compressed image peak signal to noise ratio and compression of the source, Complex modulation coherent pulse train signal, Codec ldpc code implementatio.
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