What happens to power in spectrum at Nyquist frequency?

2 次查看（过去 30 天）
Dan
Dan 2014-2-27
评论： dpb 2014-2-27
I noticed if I produce a sine wave at the Nyquist frequency (1/2 the sample rate) that the power doesn't show up in the spectrum. Here's an example with sample rate = 1024, length of signal = 1024 and frequency = 511.
Things are as they should be. Now with frequency at 512, the Nyqui
st: (not sure why this sentenced got hosed).
Just to complete the demonstration, we'll go t
o 513 Hz.
Aliasing shows up as expected. What happens at 512 Hz, the Nyquist? Where did the power go?
Thanks,
Dan

请先登录，再回答此问题。

回答（0 个）

类别

在 Help Center 和 File Exchange 中查找有关 Spectral Measurements 的更多信息

标签

产品

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!

Translated by