mindspore.numpy.blackman
- mindspore.numpy.blackman(M)[源代码]
Returns the Blackman window. The Blackman window is a taper formed by using the first three terms of a summation of cosines. It was designed to have close to the minimal leakage possible. It is close to optimal, only slightly worse than a Kaiser window.
- 参数
M (int) – Number of points in the output window. If zero or less, an empty array is returned.
- 返回
Tensor, the window, with the maximum value normalized to one (the value one appears only if the number of samples is odd).
- 异常
TypeError – If M is not an int.
- Supported Platforms:
Ascend
GPU
CPU
样例
>>> import mindspore.numpy as np >>> print(np.blackman(12)) [-1.4901161e-08 3.2606430e-02 1.5990365e-01 4.1439798e-01 7.3604518e-01 9.6704674e-01 9.6704674e-01 7.3604518e-01 4.1439798e-01 1.5990365e-01 3.2606430e-02 -1.4901161e-08]