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specal_alalisy
- 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
FFT
- 对任意输入信号进行FFT变换，并显示信号的频谱图-FFT transform
high_pass
- 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
Soundcode
- 音频信号是一种连续变化的模拟信号，但计算机只能处理和记录二进制的数字信号，由自然音源得到的音频信号必须经过一定的变换，成为数字音频信号之后，才能送到计算机中作进一步的处理。-Audio signal is a continuously varying analog signal, but the computer can handle only binary digital signal and records, obtained from natural source audio signal
AudioTestDll
- 该程序主要是对语音信号进行分析，采用FFT变换求取信号的幅值与频率，然后与以存储模版进行比较，判断信号是否正常。-The process is essentially the voice signal using the FFT algorithm to strike a signal amplitude and frequency, and then to store the template to determine whether the signal is normal.