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Description: Basically, this article describes one way to implement the 1D version of the FFT algorithm for an array of complex samples. The intention of this article is to show an efficient and fast FFT algorithm that can easily be modified according to the needs of the user. I ve studied the FFT algorithm when I was developing a software to make frequency analysis on a sample of captured sound.-Basically, this article describes one way to implement the 1D version of the FFT algorithm for an array of co mplex samples. The intention of this article is to show an efficient and fast FFT algorithm that can easily be modified according to the needs of the user. I ve studied the FFT algorithm when I wa s developing a software to make frequency Analytics sis on a sample of captured sound.
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Size: 27927 |
Author: 冰城 |
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Description: 声音处理程序,通过FFT可以看声音的频谱.-voice processing can be seen through the voices of FFT spectrum.
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Size: 57687 |
Author: PeterLee |
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Description: 快速傅立叶变换算法中的分裂基算法，又称基2/4算法，对一维序列，这种算法使FFT比较完善-Fast Fourier Transform algorithm separatist base algorithm, also known as base 2/4 algorithm, the one-dimensional sequence, so FFT algorithm sound
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Size: 2048 |
Author: 刘威 |
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Description: 关于声卡采集的一个程序，可做FFT，利用声卡做采集卡，可做声音的频谱分析。-card on a procedure for the acquisition, FFT can do, using sound card collection to do, to do the voice spectrum analysis.
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Size: 446464 |
Author: 陆冬 |
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Description: Basically, this article describes one way to implement the 1D version of the FFT algorithm for an array of complex samples. The intention of this article is to show an efficient and fast FFT algorithm that can easily be modified according to the needs of the user. I ve studied the FFT algorithm when I was developing a software to make frequency analysis on a sample of captured sound.-Basically, this article describes one way to implement the 1D version of the FFT algorithm for an array of co mplex samples. The intention of this article is to show an efficient and fast FFT algorithm that can easily be modified according to the needs of the user. I ve studied the FFT algorithm when I wa s developing a software to make frequency Analytics sis on a sample of captured sound.
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Size: 27648 |
Author: 冰城 |
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Description: 声音处理程序,通过FFT可以看声音的频谱.-voice processing can be seen through the voices of FFT spectrum.
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Size: 57344 |
Author: |
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Description: 用声卡采集的模拟信号作为输入,然后fft变换,并且图形化的显示出来-sound card collection with the analog signal input, and then fft transform, and the graphics displayed
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Size: 4096 |
Author: 44 |
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Description: 对着麦克风发点声音看看程序画面显示,本程序演示了声音的快速FFT变换(需要声卡和麦克风),对分析显示其各频率分量的程序.
-talking the microphone to see the point of voice procedures screen display, demonstration of the process of rapid voice FFT transform (need sound card and microphone), Analysis showed that the frequency components of its procedures.
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Size: 123904 |
Author: 余水强 |
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Description: VC实现基于声卡的频谱分析.可将麦克风上传的声音进行频谱分析（应用FFT变换）并回显。-VC Sound Card Based on the analysis of the spectrum. Can be uploaded to the microphone for voice spectrum analysis (FFT Transform) and a back.
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Size: 59392 |
Author: 张扬 |
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Description: This simulation script set allows for an OFDM transmission to be
simulated. Imagetx.m generates the OFDM signal, saving it as a
windows WAV file. This allows the OFDM signal to be played out a sound
card and recorded back. Imagerx.m decodes the WAV to extract the
data.
settings.m contains all the common settings to specify all the
simulation parameters such as FFT size, number of carriers,
input data source file, input and output WAV files, etc.
-This simulation script set allows for an OF DM transmission to be simulated. Imagetx.m gen erates the OFDM signal. saving it as a WAV file windows. This allows the O FDM signal to be played out a sound card and recor ded back. Imagerx.m decodes the WAV to extract t he data. settings.m contains all the common set tings to specify all the simulation parameters such as FFT size, number of carriers, input data source file, input and output WAV files, etc..
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Size: 161792 |
Author: baoruihan |
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Description: 着麦克风发点声音看看程序画面显示,本程序演示了声音的快速FFT变换(需要声卡和麦克风),对分析显示其各频率分量的程序-Point the voice of the microphone to see if the procedure showed that this procedure demonstrated the voice of the fast FFT transform (the need for sound card and microphone), the analysis shows that its various frequency components of the program
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Size: 28672 |
Author: snowfox |
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Description: API录音及实时显示FFT波形，显示多种波形变换-API sound recording and real-time display FFT waveforms, display a wide range of wave transformation
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Size: 33792 |
Author: zsf |
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Description: 声卡测试程序,包括音频分析和FFT算法,可以分析mp3,wave 文件,和声卡性能测试-Sound test procedures, including audio analysis and FFT algorithms, can be analyzed mp3, wave files, and sound card performance test
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Size: 15360 |
Author: jerry |
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Description: 这是个3D环绕声的程序，主要是频谱分析和一些时域的幅值和相位的变换，fft，等核心做。-This is a 3D surround sound procedures, mainly spectrum analyzer and some time-domain amplitude and phase of the transform, fft, so the core.
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Size: 51200 |
Author: |
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Description: 采用MATLAB分析WAV文件。
步骤一：选择一个WAV文件作为分析的对象 。（ding.wav）
步骤三：进行 FFT变换并画频域图形 。
步骤四：进行该声波主要频谱的分析。
步骤五：根据该声音的频谱，反演时域图形 。（有失真）
步骤六：进行付立叶逆变换IFFT并画频域图形 。-WAV file analysis using MATLAB. Step One: Select a WAV file as the target of analysis. (Ding.wav) Step Three: Transform and painting to FFT frequency domain graphics. Step four: the main frequency spectrum of the acoustic analysis. Step 5: According to the sound spectrum, inversion of time-domain graphics. (With distortion) Step six: to carry out inverse Fourier transform frequency domain IFFT and painted graphics.
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Size: 64512 |
Author: |
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Description: 请认真阅读采用MATLAB分析WAV文件。
步骤一：选择一个WAV文件作为分析的对象 。（ding.wav）
步骤三：进行 FFT变换并画频域图形 。
步骤四：进行该声波主要频谱的分析。
步骤五：根据该声音的频谱，反演时域图形 。（有失真）
步骤六：进行付立叶逆变换IFFT并画频域图形 。-Please carefully read the WAV files using MATLAB analysis. Step One: Select a WAV file as the target of analysis. (Ding.wav) Step Three: Transform and painting to FFT frequency domain graphics. Step four: the main frequency spectrum of the acoustic analysis. Step 5: According to the sound spectrum, inversion of time-domain graphics. (With distortion) Step six: to carry out inverse Fourier transform frequency domain IFFT and painted graphics.
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Size: 64512 |
Author: 李南 |
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Description: 实现语音的采集、量化、控制、频谱显示功能。整个程序是通过windows平台下，使用VC++6.0的库函数实现声卡的信号采集从而生成wave文件；之后，对信号进行FFT，并在windows窗口下完成频谱显示。-Voice of the collection, quantification, control, spectrum display function. The whole process through the windows platform, the use of VC++ 6.0 of the library functions achieve the sound card to generate wave signal acquisition documents after the signal FFT, and windows to complete the spectrum display window.
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Size: 22528 |
Author: CHENJIE |
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Description: 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
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Size: 1024 |
Author: 何亮 |
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Description: 1. 运行myfft.exe 把音频数据经过fft后存放在data.txt文件中
2. 再运行HUITU.exe把data.txt中的数据一帧一帧的画到屏幕上，形成动态效果
3. 运行soundee.exe 是还原声音
注:其中myfft.c是fft的C语言代码，用VC实现的；HUITU.C是绘图代码，用TC实现的；soundee.c是还原声音代码，用VC实现的。
-1. Myfft.exe run the audio data stored in the post-fft file data.txt
2. HUITU.exe to re-run the data in the data.txt a picture to a screen to form a dynamic effect
3. Soundee.exe is running to restore the sound
Note: myfft.c which is the fft of the C language code, using VC achieved HUITU.C is drawing code, using TC achieved soundee.c code to restore the sound, achieved using VC.
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Size: 319488 |
Author: 游智超 |
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Description: C#实现话音/声音时域频域FFT实时可视化源代码-audio time and frequency transform code in c#
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Size: 171008 |
Author: sabursten |
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