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Description: 频谱分析技术是研究周期性现象中最为常用的一种统计分析方法，其主要是通过对一复合的波系进行数据变换，将其分解成若干振幅和相位不同的简谐波，并找出其中振幅最大的波，即该复合波中的主要频率。频谱分析的方法较多，其中最常用的是快速傅立叶变换法(FFT)-spectrum analysis techniques to study the cyclical phenomenon most commonly used a statistical analysis method, its principal is a composite of the wave data transformation, its decomposition into a number of different amplitude and phase of the harmonic, and finding the biggest wave amplitude, which is the compound of the main wave frequency. Spectrum analysis method more, the most common of which is a fast Fourier transform (FFT)
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Size: 3622 |
Author: 郭泽清 |
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Description: 用FFT 进行信号的频谱分析
1、高斯序列
2、衰减正弦序列
3、三角波序列
4、反三角序列-signals using the FFT spectrum analysis of one, two Gaussian sequence, the sequence of 3 attenuation sine, triangle wave sequence 4, anti - triangular series
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Size: 1027 |
Author: zl |
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Description: 用C++ 生成的正弦波数据文件，N是fft的点数，f是正弦波信号频率，fs是采样频率，结果会生成in.dat文件
-C generated sine wave data files, fft N is the number of dots, f is the frequency sine wave signal. fs is the sampling frequency, the result will document generation in.dat
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Size: 79257 |
Author: lili |
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Description: FFT 频域变化并显示 方波 三角波 正弦 及随机序列 -FFT frequency domain shows changes sine square and triangular wave random sequence
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Size: 88859 |
Author: 姜小明 |
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Description: Wave文件读取、播放、实时显示波形、对其作FFT和DCT等功能-Wave document read, play, real-time waveform, for its FFT and DCT functions
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Size: 341545 |
Author: 罗永 |
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Description: 水面实时渲染，使用FFT和Wave方程来生成水面波动，要求显卡必须支持SM3.0和VTF（Geforce6以上）
使用2005.8的DXSDK编译
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Size: 2028709 |
Author: GoldFX |
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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
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Size: 15991 |
Author: jerry |
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Description: FFT and IFFT for 16-bits wave, you can
use this instead of convolution calculate, input samples must be 2^n.
If its not 2^n samples just stuff zero
in last array.
I already make it to C++ class you can
new a calss and do it easy
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Size: 33266 |
Author: 小誠\ |
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Description: include FFT IFFT and using FFT to calculate convolution and round off.
Its useful for wave 16 bits.
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Size: 34350 |
Author: 小誠\ |
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Description: 用VC++写的录音程序，利用低级音频函数直接操作硬件，录音效果不错，适合初学者在该基础上继续开发语音处理的程序。-With VC++ Written recording procedures, the use of low-level audio functions directly hardware, recording good results, suitable for beginners based on the continued development of voice processing procedures.
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Size: 3991552 |
Author: yequnsong |
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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
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Size: 1024 |
Author: river |
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Description: 利用FFT分析方波信号的频谱，讨论采样点数、采样频率对谱分辨率的影响。对数据叠加白噪声后再次分析实验结果。-Square-wave signal using FFT spectrum analysis to discuss the sampling points, the sampling frequency of the impact of spectral resolution. White noise superimposed on the data after analysis of experimental results.
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Size: 1024 |
Author: dicunxia |
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Description: 使用FFT分析方波信号的频谱，讨论采样点数、采样频率对谱分辨率的影响。对数据叠加白噪声后再次分析实验结果。-Square-wave signal using the FFT spectrum analysis to discuss the sampling points, the sampling frequency of the impact of spectral resolution. White noise superimposed on the data after analysis of experimental results.
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Size: 1024 |
Author: dicunxia |
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Description: 使用FFT分析三角波信号的频谱，讨论采样点数、采样频率对谱分辨率的影响。对数据叠加白噪声后再次分析实验结果。-FFT analysis of the use of the triangular wave signal spectrum to discuss the sampling points, the sampling frequency of the impact of spectral resolution. White noise superimposed on the data after analysis of experimental results.
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Size: 1024 |
Author: dicunxia |
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Description: 利用FFT進行心電訊號除噪並截取R波特徵點-Use of FFT to the heart in addition to its telecommunications interception of R-wave noise and feature points
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Size: 39936 |
Author: jsc66 |
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Description: wave声音播放，其中主要用c语言写的，但是缺少FFT的动态连接库-sound wave player
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Size: 8192 |
Author: lc |
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Description: 运用FFT对信号进行滤波，将频率为8-15Hz的波滤除，绘出滤波前后的振幅频谱以及滤波后的时间域信号-using FFT for wave filtering,
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Size: 1024 |
Author: 刘戈 |
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Description: 本程序利用FFT算法来测量同频正弦之间的相位差，分辨率可达0.01度.-This program using FFT algorithm for measuring the phase difference between two sine wave signals with the same frequency.
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Size: 362496 |
Author: LiangYurong |
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Description: 把雷克子波离散，对其做fft变换到频率域，然后滤波，再做ifft变换回时间域。-To Leike Zi wave dispersion, its to do fft transform into the frequency domain and then filter, do ifft transform back to time domain.
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Size: 76800 |
Author: 箫箫 |
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Description: FFTPACK is a package of Fortran subprograms for the fast Fourier transform of periodic and other symmetric sequences. It includes complex, real, sine, cosine, and quarter-wave transforms.
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Size: 38912 |
Author: tec4tech |
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