fft_coefficient 函数会对你的股票价格数据进行傅里叶变换,得到一系列复数。 这些复数的模长表示对应频率成分的振幅,也就是这个“音符”有多响。 这些复数的相位角表示对应频率成分的相位,也就是这个“音符”的音色。 coeff 参数指定了你要提取哪些频率成分的特征。 attr 参数指定了你要提取哪些特征属性,比如振幅、...
In this paper, the principle of finding the optimized coefficient set of integer fast Fourier transform (IntFFT) is introduced. IntFFT has been regarded as an approximation of original FFT since it utilizes lifting scheme (LS) and decomposes the complex multiplication of twiddle factor into three...
Wang, LingZhang, WeiZhang, Zeng-pingLiu, Yuan-anSpringer Berlin HeidelbergMicrosystem TechnologiesL Wang, W Zhang, Z P Zhang, et al. Spinning frequency estimation algorithm of MEMS gyro's output signal based on FFT coefficient. Microsystem Technologies, 1-5(2017)...
Arslan, " Coefficient memory addressing scheme for high performance FFT processors, " Electronics Letters, vol. 37, No. 22, pp. 1322-1324, 2001.Hasan, M.; Arslan, T. "Coefficients memory addressing scheme for high performance processors" Electronic let- ters. Vol. 37, No. 22. Oct. 2001...
simulating the elastoplastic contact between nominally flat surfaces of materials containing inhomogeneities or coatings is developed via extending the concept of the discrete convolution and FFT (DC–FFT) algorithm with double superpositions of influence coefficients, which is named the DCSS–FFT algorithm...
Major part of power consumption in the Coefficient ROM is attributed to precharge of bit-lines and charge of word-lines. We find that the coefficient access exhibits a low activity, 37.5%. Employing a simple ATD circuit to enable read operations on the coefficient ROM, 61.25% of power ...
The invention provides the three-coefficient Nuttall windowed interpolation FFT fundamental wave and harmonic detecting method for directly calculating the interpolation coefficients based on the explicit formulation. The invention has advantages of providing the windowed interpolation FFT fundamental wave and ...
The invention firstly provides the fundamental wave and harmonic wave detection method based on the four-item coefficient Nuttall window interpolation FFT for directly computing the interpolation coefficients by using the explicit expression, and has the advantages of small computed amount and high ...
Ordered pipelined FFT architecture; Results of the study; Conclusion.HasanM.ArslanT.ThompsonJ.S.IEEE Transactions on Consumer ElectronicsHasan, M.; Arslan, T.; Ihompson, J.S, "A novel coefficient ordering based low power pipelined radix4 F€Tprocessor for wireless LAN applicatiom," Conrumer ...
Case Study: Coefficient Training in Paley-Wiener Space, FFT, and Wavelet Theorydoi:10.5772/intechopen.94865Patrick Kikodio