how to accept and reject a frequency as a dominant frequency

how to accept and reject a frequency as a dominant frequency

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送交者: cornbug 于 2014-07-28, 11:24:41:

by examining a Fourier frequency spectrum? How can you say there is no dominant frequency based on the spectrum?

振幅显著高于其他的那一项就是dominant了吧？把那项截出来或卡掉 (无内容) - whoami (0 bytes) 2014-07-28, 11:35:26 (755032)
- 是能量不是振幅 (无内容) - conner (0 bytes) 2014-07-28, 11:43:31 (755035)
  - “能量”就是振幅的平方。不知道他说的是什么谱图，有没有能量也不一定 (无内容) - whoami (0 bytes) 2014-07-28, 11:59:22 (755037)
    - power spectrum (无内容) - cornbug (0 bytes) 2014-07-28, 13:02:08 (755041)
- 只能目视加任意判断？ (无内容) - cornbug (0 bytes) 2014-07-28, 11:38:02 (755033)
  - 我想所谓dominant就是个人为规定吧，比如占多少百分比以上？ (无内容) - whoami (0 bytes) 2014-07-28, 12:00:44 (755038)