Description: 我编写的声卡示波器 能够显示波二路波形，还可以产生所需的三角波，正弦波，方波等-I prepared to demonstrate sound card oscilloscope waveform wave two-sample, can have the triangular wave, sine wave, square, etc. Platform: |
Size: 2013184 |
Author:qjhhsnr |
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Description: 用Matlab产生正弦波,矩形波,以及白噪声信号，并显示各自时域波形图
2．进行FFT变换，显示各自频谱图，其中采样率，频率、数据长度自选
3．做出上述三种信号的均方根图谱,功率图谱,以及对数均方根图谱
4．用IFFT傅立叶反变换恢复信号，并显示恢复的正弦信号时域波形图
-Using Matlab generated sine wave, rectangular wave, as well as the white noise signal, and display their respective time-domain waveform of Figure 2. FFT to transform, showing their frequency spectrum, including sampling rate, frequency, data length of 3-on-demand. Make the rms signal of the three maps, power maps, as well as the number of root-mean-square map 4. Fourier Transform IFFT with the restoration of signals, and displays the sinusoidal signal the resumption of time-domain waveform Platform: |
Size: 1024 |
Author:river |
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Description: fft1．用Matlab产生正弦波,矩形波,以及白噪声信号，并显示各自时域波形图
2．进行FFT变换，显示各自频谱图，其中采样率，频率、数据长度自选
3．做出上述三种信号的均方根图谱,功率图谱,以及对数均方根图谱
4．用IFFT傅立叶反变换恢复信号，并显示恢复的正弦信号时域波形图-fft1. Using Matlab generated sine wave, rectangular wave, as well as the white noise signal, and display their respective time-domain waveform of Figure 2. FFT to transform, showing their frequency spectrum, including sampling rate, frequency, data length of 3-on-demand. Make the rms signal of the three maps, power maps, as well as the number of root-mean-square map 4. Fourier Transform IFFT with the restoration of signals, and displays the sinusoidal signal the resumption of time-domain waveform Platform: |
Size: 1024 |
Author:李三 |
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Description: 1．用Matlab产生正弦波,矩形波,以及白噪声信号，并显示各自时域波形图
2．进行FFT变换，显示各自频谱图，其中采样率，频率、数据长度自选
3．做出上述三种信号的均方根图谱,功率图谱,以及对数均方根图谱
4．用IFFT傅立叶反变换恢复信号，并显示恢复的正弦信号时域波形图
-1. Using Matlab generated sine wave, rectangular wave, as well as the white noise signal, and display their respective time-domain waveform of Figure 2. FFT to transform, showing their frequency spectrum, including sampling rate, frequency, data length of 3-on-demand. Made of the three signals in root-mean-square maps, power maps, as well as the number of root-mean-square map 4. Fourier Transform IFFT with the restoration of signals, and displays the sinusoidal signal the resumption of time-domain waveform Platform: |
Size: 4096 |
Author:白杨 |
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Description: matlab用于信号发生器产生波形，正弦波，方波等-matlab for the signal waveform generator, sine wave, square wave, etc. Platform: |
Size: 13312 |
Author:毛名言 |
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Description: 该代码首先对ECG信号进行消噪过滤，并且对信号进行平方，加窗等处理，最后用于对QRS波形的检测，压缩文件内同时包含了2个心电数据信号，可直接用于测试-The code first ECG signal de-noising filter, and the square of the signal, such as window handle, and finally used for the detection of QRS waveform, at the same time compressed file contains two ECG data signals can be directly used to test Platform: |
Size: 694272 |
Author:zhengp |
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Description: 信号频谱分析
1. 观测已知方波信号、正弦波信号的频谱
分析频率为4KHz、8KHz的占空比为50 的方波信号、正弦波信号的频谱。记录所得频谱图。
2. 观测实时模拟信号（语音）的频谱
用音频设备采集一段语音，将语音存为.wav格式。对wav文件作分段傅里叶变换分析。语音是分音节的，应把它分段分析，而且实际运用中的数字信号处理的FFT的点数是有限的，一般只能达到千点。用傅里叶反变换IFFT，从频域恢复信号。画出频谱图和语音波形图-Signal spectrum analysis 1. Observing a known square-wave signal, sine wave signal frequency spectrum analysis 4KHz, 8KHz for the 50 duty cycle square wave signal, sine wave signal frequency spectrum. The recorded frequency spectrum. 2. Observing real-time analog signal (voice) of the spectrum collected with the audio devices section of voice, voice saved as. Wav format. Wav file of the sub-Fourier transform analysis to make. Speech is divided into syllables, it should be sub-analysis, and practical application of digital signal processing of the FFT points is limited, generally only reach 1000 points. Fourier inverse transform IFFT, to restore the signal from the frequency domain. Draw maps and voice waveform spectrum Platform: |
Size: 64512 |
Author:benny |
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Description: 信号频谱分析
1. 观测已知方波信号、正弦波信号的频谱
分析频率为4KHz、8KHz的占空比为50 的方波信号、正弦波信号的频谱。记录所得频谱图。
观测实时模拟信号（语音）的频谱
用音频设备采集一段语音，将语音存为.wav格式。对wav文件作分段傅里叶变换分析。语音是分音节的，应把它分段分析，而且实际运用中的数字信号处理的FFT的点数是有限的，一般只能达到千点。用傅里叶反变换IFFT，从频域恢复信号。画出频谱图和语音波形图-Signal spectrum analysis 1. Observing a known square-wave signal, sine wave signal frequency spectrum analysis 4KHz, 8KHz for the 50 duty cycle square wave signal, sine wave signal frequency spectrum. The recorded frequency spectrum. Observing real-time analog signal (voice) of the spectrum collected with the audio devices section of voice, voice saved as. Wav format. Wav file of the sub-Fourier transform analysis to make. Speech is divided into syllables, it should be sub-analysis, and practical application of digital signal processing of the FFT points is limited, generally only reach 1000 points. Fourier inverse transform IFFT, to restore the signal from the frequency domain. Draw maps and voice waveform spectrum Platform: |
Size: 94208 |
Author:benny |
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Description: 数字电子琴的功能
电子琴的每个音阶均对应一个特定频率的信号，通过调用数字信号发生器产生一系列指定的频率的声音，从而达到虚拟的电子琴的功能，界面中包含A、B、…、O共 15 个琴键，鼠标按下时即发声，松开时发声停止。 同时能够产生正弦波、方波、三角波等常见的波形的数字信号，并且提供了图形界面用于选择波形、频率、幅值与相位。能够根据用户指定的波形和参数产生相应的数字信号，然后将数字信号写入声卡的缓冲区，最后由声卡播放出相应的声音。
-Digital electronic keyboard electronic keyboard features both for each scale corresponds to a specific frequency signal, digital signal generator by calling the specified frequency range of voice, so as to achieve the functions of a virtual keyboard interface includes A, B, ..., O A total of 15 keys, the mouse is pressed the sound, let go when the sound stops. At the same time can produce sine, square, triangle and other common digital signal waveform, and provides a graphical interface used to select the waveform, frequency, amplitude and phase. To the user specified waveforms and parameters of a corresponding digital signal, and then write the sound card digital signal buffer, and finally by the sound card plays the corresponding sound. Platform: |
Size: 231424 |
Author:lijinejie |
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Description: 語音信號是基於時間軸上的一維數位信號，在這裏主要是對語音信號進行頻域上的分析。在信號分析中，頻域往往包含了更多的資訊。對於頻域來說，大概有8種波形可以讓我們分析：矩形方波，鋸齒波，梯形波，臨界阻尼指數脈衝波形，三角波，餘旋波，余旋平方波，高斯波。對於各種波形，我們都可以用一種方法來分析，就是傅立葉變換：將時域的波形轉化到頻域來分析。-Voice signal is based on the timeline of one-dimensional digital signal, where mainly the speech signal in frequency domain analysis. In signal analysis, frequency domain often contains more information. For the frequency domain for about 8 allows us to analyze waveforms: rectangular square wave, sawtooth, trapezoidal wave, the critical damping index pulse, triangle wave, I spin wave, I spin square wave, Gaussian. For all waveforms, we can analyze in a way that is Fourier transform: the transformation of time domain waveform into the frequency domain to analyze Platform: |
Size: 133120 |
Author:林志強 |
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Description: 用Matlab产生正弦波,矩形波,以及白噪声信号，并显示各自时域波形图，FFT实践及频谱分析-Matlab generated by sine wave, square wave, and the white noise signal, and display their time-domain waveform, FFT spectrum analysis of practice and Platform: |
Size: 1024 |
Author:qin |
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Description: ：SPWM调制技术是通过改变输出方波的占空比来改变等效的输出电压，其调制波为正弦波，脉冲宽度间占空
比按正弦规率排列， 这样输出波形经过适当的滤波可以做到正弦波输出。它广泛的用于支流交流逆变器。本次实
验使用Matlab/Simulink对SPWM技术进行仿真并分析数据。-: SPWM modulation by changing the duty cycle square wave output to change the equivalent output voltage, the modulated sine wave, pulse width, duty cycle between the rate at sine arranged so that the filter output waveform can be done properly to the sine wave output. It is widely used in branch AC inverter. The experiment uses Matlab/Simulink simulation of the SPWM technique and analyze data. Platform: |
Size: 651264 |
Author:fmx |
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Description: 1 采用正弦波，方波进行同步调制，实现调制信号、已调信号、解调信号的波形、频谱以及解调器输入输出信噪比的关系。
2 采用Verilog语言编写有符号的五位乘法器
3 实现数字与模拟调制-A sine wave, square wave synchronous modulation to achieve the modulation signal, the modulated signal, the demodulated signal waveform, spectrum and signal to noise ratio of the demodulator input and output relationship. 2 using Verilog language has signed five digital and analog multiplier 3 modulation Platform: |
Size: 559104 |
Author:许学真 |
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Description: 用matlab编写了一个，信源产生经过BPSK调制以及根号升余弦滤波器后再加上载波最后将波形图输出的程序-Using matlab prepared a source after BPSK modulation, as well as the square root raised cosine filter and then with the carrier waveform graph output of the program Platform: |
Size: 1024 |
Author:谷丰 |
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Description: 1．用Matlab产生正弦波,矩形波,以及白噪声信号，并显示各自时域波形图
2．进行FFT变换，显示各自频谱图，其中采样率，频率、数据长度自选
3．做出上述三种信号的均方根图谱,功率图谱,以及对数均方根图谱
4．用IFFT傅立叶反变换恢复信号，并显示恢复的正弦信号时域波形图- 1. Using Matlab generated sine wave, square wave, and the white noise signal, and displays the respective time-domain waveform 2. The FFT transform, showing each spectrum, where the sampling rate, frequency, data length choice 3. Rms signal to make the three maps, power spectra, as well as the number of rms spectra 4. With the inverse Fourier transform IFFT restore the signal and displays the recovered time-domain waveform sinusoidal signal Platform: |
Size: 1024 |
Author:李杰 |
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Description: 1．用Matlab产生正弦波,矩形波,以及白噪声信号，并显示各自时域波形图
2．进行FFT变换，显示各自频谱图，其中采样率，频率、数据长度自选
3．做出上述三种信号的均方根图谱,功率图谱,以及对数均方根图谱
4．用IFFT傅立叶反变换恢复信号，并显示恢复的正弦信号时域波形图-1. Produce sine wave, square wave, and the white noise signal with Matlab, and their time-domain waveform display
2. FFT transform, display each spectrum, where the sampling rate, frequency, length optional data
3. RMS to make maps of the three signals, power spectrum, as well as the number of RMS map
4. Restored by inverse Fourier transform IFFT signal and displays the time domain waveforms sinusoidal signal recovery Platform: |
Size: 1024 |
Author:刘真 |
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Description: 程序1：周期信号（方波）的展开
程序2：用图形表示DSB调制波形及其包络线
程序3：通过傅里叶变换找出被随机信号淹没的信号频率
程序4：DSB-AM 双边带幅度调制和解调
程序5：AM调制和解调-Procedure 1: periodic signal (square wave)
Program 2: graph DSB modulation waveform and its envelope
Application 3: through the Fourier transform to find out the submerged by random signal signal frequency
Program 4: DSB- AM double sideband amplitude modulation and demodulation
Program 5: AM modulation and demodulation Platform: |
Size: 2048 |
Author:星河之风 |
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Description: 使用matlab对通信系统中常使用的hdb3编码进行仿真编码以及解码过程，以及如何使用matlab的plot函数来画方波波形图。-Use of matlab hdb3 encoded communication systems often used to simulate the process of coding and decoding, and how to use the plot function to draw the matlab square waveform of FIG. Platform: |
Size: 2048 |
Author:张鑫 |
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Description: 编写MATLAB程序，讨论在 ??_0=5×〖10〗^(?5)的加性高斯白噪声环境中，利用匹配滤波器检测幅度为2，宽度为1ms的方波信号的情况(考虑取样时间为Ts=0.1ms)，测量匹配滤波器输入信号中心处与输出信号最佳取样处的SNR，绘出信号波形。(Write a MATLAB program, "10" discussed in the _0=5 * ^ (- 5) and Gauss white noise environment, using the matching detection filter amplitude is 2, the width of 1ms square wave signal condition (considering the sampling time is Ts=0.1ms), measuring the matched filter input signal and output signal at the center of the optimum sampling at SNR, draw the signal waveform.) Platform: |
Size: 12288 |
Author:Selena_01
|
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Search - square waveform matlab