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ding
选取windows系统自带的ding.wav信号作为分析对象，在Matlab软件平台下，利用函数wavread对音频信号进行采样，记住采样频率和采样点数，听一下原始声音sound(y, fs, bits)。
（2）音频信号的频谱分析，先画出音频信号的时域波形；然后对音频号进行快速傅里叶变换fft(y,N)，N取32768，画出信号的频谱特性，加深对频谱特性的理解。
（3）根据频谱，反演时域特性，画出时域波形。寻找幅值最大的两个频率，此频率除以fft点数在乘以采样频率就是信号的主频，即可合成信号的时域图形，听一下声音。
（4）对原音频信号进行1024点的分段付立业分析meshgrid
（5）根据主要频线合成音频，并画出时域图形，试听合成效果。
（6）采用线性插值（linspace）和傅立业反变换(fliplr, ifft)分别合成音频，并画出时域图形，试听效果。
(err)
- 2009-01-13 16:23:47下载
- 积分：1
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kMeansCluster
k mean clustering algo
- 2010-09-09 15:06:49下载
- 积分：1
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dmusicmatlab
智能天线中的d music 算法，可以实现波束赋形，权值优化等(smart antenna d music )
- 2009-04-04 15:04:11下载
- 积分：1
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Pulse-Code-Modulation
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，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，A律和μ律编码都已被定为国际标准。
本程序实现了A律、μ律以及均匀量化三种PCM，并带有GUI界面，方便使用。可以计算编码后的码率、运行时间以及最小均方误差。(Pulse Code Modulation (PCM, Pulse Code Modulation) is an analog voice signal into digital signal encoding, from the mathematical point of view, the process is to quantify the magnitude of the value of an infinite number of continuous mapping into a discrete set of the limited range of values number set, code is 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, A law and μ-law code have been designated as international standards.
A law implemented in this program, μ law and the uniform quantization of three PCM, with a GUI interface, easy to use. Encoded bit rate can be calculated, running time and minimum mean square error.
)
- 2011-02-05 23:10:39下载
- 积分：1
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DOCSIS_DRFI
DOCSIS DRFI Specification
- 2014-08-11 16:54:58下载
- 积分：1
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wireless-communication-4704
无线通信系统仿真，程序块很分明，包含MIMO、OFDM、空时编码，有很多子函数，可以借鉴(The wireless communication system simulation, block very clear, including MIMO, OFDM, space-time coding, there are many sub-functions, we can draw)
- 2013-12-17 12:04:43下载
- 积分：1
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formantdetect
读入一段语音，进行基音检测，最后实现对这段语音的共振峰检测。(Read in a speech, pitch detection, and finally to achieve this period of speech resonance peak detection.)
- 2012-04-02 14:05:38下载
- 积分：1
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msk
msk与gmsk调制解调的仿真程序，仿真结束后将结构写入文件。(structure simulation of msk and gmsk modem program, the end of the simulation will write to the file.)
- 2013-02-25 20:10:54下载
- 积分：1
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Lyapunov-Nonlinear-Control-GUI
该GUI可用于调节任何可控的非线性系统到用户指定的设定点。它使用切换李亚普诺夫控制函数。非线性系统可以是任何阶的，并且不限输入的数目。(This GUI can be used to regulate any controllable nonlinear system to a user-specified setpoint. It uses a switched Lyapunov control function. The nonlinear system can be of any order and with any number of inputs. )
- 2020-12-23 13:49:06下载
- 积分：1
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rrcmodulber
this program do qam modulation and upsampling and downsampling and use raised cosine filteroj
- 2013-12-26 21:32:15下载
- 积分：1
