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fft-vb
- vb版本的fft变换,能够正反变换。正变换: 把时域信号转换成频域信号,反变换:能够把频域信号转换成时域信号。fft可广泛应用于工程领域,例如:信号的频域分析。震动,噪声的分析等等。-vb version of the fft transform, to transform pros. Transformation : put time domain signal into frequency domain signal, anti-transformation : can frequenc
fft
- 对信号做傅里叶变换和包络分析,适合初学者信号分析,简单易懂(Fourier transform and envelope analysis of the signal, suitable for beginners signal analysis, easy to understand)
FRFT
- 文件中包含分数阶傅里叶变换的算法及几个用分数阶傅里叶变换处理信号的实例。(The algorithm of fractional Fourier transform in the file and some examples of signal processing with fractional Fourier transform.)
信号
- 可以产生一个分段信号,并画出其不同取样点下的傅里叶变换(A piecewise signal can be generated and the Fourier transform under different sampling points is drawn)
ZOOM-FFT算法
- ZOOM-FFT称为细化的快速傅立叶变换,又称为选带快速傅立叶变换。ZOOM-FFT的功能是对信号的频率进行局部细化放大,使感兴趣的频带获得较高的频率分辨率。实现FFT细化功能的算法有几种,如频移法-、相位补偿法和最大熵谱法等,目前应用最关的是频移法(ZOOM-FFT is called a thinned Fast Fourier Transform, also known as Fast Fourier Transform. The function of ZOOM-FFT is to pa
ECG_FEATURE_WAVELET_ST
- 小波变换对心电信号降噪,以及对r波的检测定位(De-noising of ECG signal by wavelet transform and detection and positioning of R wave)