python生成连续正弦波 代码： import numpy as npimport matplotlib.pyplot as pltfrom matplotlib.pylab import mplclass Sin(): def __init__(self): self.Fs = 1024.0 # 采样频率 self.N = 1024 # 采样点数 self.f0 = 4.0 # 信号频率
python生成连续正弦波
代码：
import numpy as np import matplotlib.pyplot as plt from matplotlib.pylab import mpl class Sin(): def __init__(self): self.Fs = 1024.0 # 采样频率 self.N = 1024 # 采样点数 self.f0 = 4.0 # 信号频率 self.pha = 0 # 初始相位 self.t = np.arange(self.N) / self.Fs # 时间向量 1*1024的矩阵 def get_data(self): self.pha += 10 return np.sin(8 * np.pi * self.t + self.pha * np.pi / 180.0) def show_plot(self): mpl.rcParams['font.sans-serif'] = ['SimHei'] # 显示中文 mpl.rcParams['axes.unicode_minus'] = False # 显示负号 plt.subplot() plt.plot(self.t, self.get_data(), 'blue') plt.title('正弦波', fontsize=9, color='blue') plt.show() if __name__ == '__main__': Sin().show_plot()