应用傅里叶变换DFT，分析各种离散信号x(k)的频谱。 1.1离散周期信号 -Application of Fourier Transform DFT, analysis of discrete signal x (k) spectrum. 1.1 discrete periodic signal

MFCC (Mel Frequent Cepstral Coefficient) in M-File. epresentation of the short-term power spectrum of a sound, based on a linear cosine transform of a log power spectrum on a nonlinear mel scale of frequency. MFCCs derived as follows: 1. Ta

about the signal processing,especially the fourier transform

对指定音频信号进行高通滤波处理，并输出指定文件，滤波采用双线性变换法-Designated high-pass filtering the audio signal processing, and outputs the specified file, filtering using bilinear transform