[通讯编程] F0_extraction
使用经验模式分解（EMD）从连续语音中提取基频（和高次谐波）波形。，
Fundamental Frequency (and higher harmonics) waveform extraction from continuous speech using Empirical Mode Decomposition (EMD)., (2021-02-05, matlab, 0KB, 下载0次)
[通讯编程] fundamental_waveforms_extraction
使用经验模式分解（EMD）从连续语音中提取基频（和高次谐波）波形。，
Fundamental Frequency (and higher harmonics) waveform extraction from continuous speech using Empirical Mode Decomposition (EMD)., (2018-07-16, Others, 0KB, 下载0次)
[通讯编程] weblate2xmpp
当网络版上%的翻译字符串发生变化时，显示在我们的devroom中，
display in our devroom when a % of translated strings has changed on weblate, (2017-03-05, Python, 0KB, 下载0次)
[通讯编程] AM调制与解调系统模型
产生原始模拟信号波形，采用AM调制方式，通过包络检波解调出原始信号波形，通过仿真分析解调原理
Generate baseband signal, simulate FSK modulation and demodulation principle, use coherent demodulation to demodulate FSK modulation signal, and draw the BER curve under different SNR to generate the original analog signal waveform, use am modulation mode, demodulate the original signal waveform through envelope detection, and analyze the demodulation principle through simulation (2021-01-09, matlab, 1KB, 下载0次)
[通讯编程] 第一个最大值
实现波形的第一个极大值检测，范围索引值和幅值。需要使用阈值排除底噪
The first maximum detection of waveform is realized (2020-12-10, LabView, 8KB, 下载0次)
[通讯编程] 16QAM 64QAM信号产生及分析
16QAM信号 64QAM信号的产生和分析，星座图，频谱，功率谱
6QAM signal 64QAM signal generation and analysis, constellation, spectrum, power spectrum (2019-05-11, matlab, 436KB, 下载19次)
[通讯编程] 10285713
对语音编码技术的特点进行了分析与研究, 对波形编码,声码器和混合编码三种主要 的语音编码进行了比较, 并介绍了GSM 和CD
This paper analyzes and studies the characteristics of speech coding technology, compares the three main speech codes: waveform coding, vocoder and hybrid coding, and introduces GSM and CD. (2019-03-27, Others, 184KB, 下载1次)
[通讯编程] khwpzrw6
1)生成2KHz和8KHz的混合信号,使该信号通过上述滤波器,观察滤波前后的波形变化和频谱分布情况, 2) 在改信号中加入高
1) generate the mixed signal of 2KHz and 8KHz to pass the filter, observe the waveform change and spectrum distribution before and after filtering, 2) add high to the modified signal. (2019-03-26, matlab, 51KB, 下载0次)
[通讯编程] 5.2 4PSK仿真
用MATLAB画出4PSK仿真图,功能完善，实现的结果和理论值非常接近。
Using MATLAB to do 4PSK simulation (2018-04-11, matlab, 1KB, 下载1次)
[通讯编程] 直接序列扩频通信仿真
使用simulink搭建一个直接序列扩频调制系统模型，能够正常运行，有时域波形和频谱波形。
Simulink is used to construct a direct sequence spread spectrum modulation system model, which can operate normally, with time domain waveform and spectrum waveform. (2018-03-23, matlab, 144KB, 下载19次)
[通讯编程] NEW_waveform32
产生2^5的二进制PRBS信号，编码成单极性NRZ,RZ信号并绘制出波形，把2^5的PRBS信息码编码成HDB3码和差分双向码并绘制出波形
The binary PRBS signal generated by 2^5 is coded into unipolar NRZ, RZ signal, and the waveform is plotted. The PRBS information code of 2^5 is encoded into HDB3 code and differential bidirectional code, and the waveform is plotted (2017-10-21, WINDOWS, 2KB, 下载5次)
[通讯编程] Nch44raro
噪声及波形信号的产生，包含square函数，sawtooth函数，chirp函数数
Noise and waveform signal is generated that contains the function square, sawtooth function, chirp function of the number of (2012-08-13, Visual C++, 11KB, 下载6次)
[通讯编程] wcdmasimulation
模拟wcdma解码过程，包括PQSK，交织，扰码发生等，值得一看
simulation wcdma uplink decode producture (2012-03-05, Visual C++, 153KB, 下载4次)
[通讯编程] AM
AM调制信号的时域波形和频谱，参数可自己修改
AM modulated signal time-domain waveform and frequency spectrum (2011-10-25, matlab, 1KB, 下载20次)
[通讯编程] VCDigitalSignalProgressing
VC实现数字图像处理、数字信号处理、内存管理、画饼状图柱状图、QQ广告栏、经纬度转换、将二进制代码写入excel、正旋发生器
VC digital image processing, digital signal processing, memory management, drawing pie chart histogram, QQ billboards, longitude and latitude conversion, the binary code into excel, is rotating generator (2010-01-24, Visual C++, 68KB, 下载18次)
[通讯编程] DSP1
1)生成2KHz和8KHz的混合信号，使该信号通过上述滤波器，观察滤波前后的波形变化和频谱分布情况。
2) 在改信号中加入高斯白噪声，观察滤波前后的波形变化和频谱分布情况3) 将上述滤波器改为中心频率为100KHz的带通滤波器，信号源为带外的90KHz和带内的100KHz的混合正弦信号，。
4) 用M文件实现上述低通滤波器。
1) 2KHz and 8KHz to generate the mixed-signal, so that the signal through the above-mentioned filter, filter before and after observation of the waveform and spectrum distribution of the changes. 2) add to the signal in white Gaussian noise was observed before and after filtering and spectral waveform changes in the distribution of 3) will be replaced by the above-mentioned filter center frequency of 100KHz band pass filter, the signal source for the band and the band of 90KHz 100KHz Sine of the mixed signals. 4) achieve the above-mentioned documents with M low-pass filter. (2009-04-08, matlab, 61KB, 下载66次)
[通讯编程] fsk
4fsk调制信号的详细过程，并画出时域波形，有注解
Modulation signal 4FSK detailed process and draw time-domain waveform, there are comments (2008-11-10, matlab, 1KB, 下载380次)
[通讯编程] 13898375FPGA_FIR
尽管频率合成技术已经经历了大半个世纪的发展史，但直到今天，人们对 它的研究仍然在继续。现在，我们可以开发出输出频率高达IG的DDS系统， 武汉理工大学硕士学位论文 已能满足绝大多数频率源的要求，集成DDS产品的信噪比也可达到75dB以上， 已达到锁相频率合成的一般水平。电子技术的发展己进入数字时代，模拟信号 数字化的方法也是目前一个热门研究课题，高速AD、DA器件在通信、广播电 视等领域的应用越来越广泛。本次设计完成了软件仿真和硬件实现，对设计原 理和设计结果进行了一定的理论分析，在一定的频率范围内设计结果与理论值 基本符号，达到了设计指标的要求。限于本人的水平和实现条件，此次设计在 频率稳定度、最高输出频率、降低杂散等方面仍有改进的空间，今后还需进一 步提高。 (2008-06-01, VHDL, 149KB, 下载12次)
http://www.pudn.com/Download/item/id/479222.html[通讯编程] AMI
AMI仿真程序,可以直接生成波形~使用M文件
AMI simulation procedures can be directly used to generate waveforms ~ M documents (2008-05-28, matlab, 84KB, 下载17次)
[通讯编程] 几种编码方式
A. 产生一个长为1000的二进制随机序列，“0”的概率为0.8，”1”的概率为0.2；B. 对上述数据进行归零AMI编码，脉冲宽度为符号宽度的50%，波形采样率为符号率的8倍，画出前20个符号对应的波形（同时给出前20位信源序列）；C. 改用HDB3码，画出前20个符号对应的波形；D. 改用密勒码，画出前20个符号对应的波形；E. 分别对上述1000个符号的波形进行功率谱估计，画出功率谱；F. 改变信源“0”的概率，观察AMI码的功率谱变化情况；
have a length of 1,000 random binary sequence, "0" with a probability of 0.8, "a" with a probability of 0.2; B. above zero AMI data coding, and pulse width of symbols width of 50%, waveform sampling rate Symbol rate for the eight times that he painted before the 20 symbols corresponding waveforms (also given before 20 Source sequence); C. HDB3 code switch to depict the former 20 symbols corresponding waveform; D. Miller to switch codes to depict the former 20 symbols corresponding waveform; E. respectively above 1,000 symbols for the power spectrum waveform estimated to depict the power spectrum; F. Change source "0" the probability to observe AMI code changes in the power spectrum; (2005-04-10, matlab, 58KB, 下载143次)