Oscillations - Determining amplitude and frequency values

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Max Wilson
Max Wilson 2020-4-16
回答： Jakob B. Nielsen 2020-4-16
I am investigating the synchrony of multiple oscillations and I am struggling to identify the upper/lower frequencies relative to the half maximum.
Could anyone suggest a simple way to:
  • Identify the peak amplitude of an oscillation in a frequency range.
  • Calculate 50% of this peak amplitude.
  • Identify upper and lower amplitude values at 50%.
  • Determine the corresponding frequency of the upper and lower 50% values.
Any help would be greatly appreciated!

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回答（1 个）

Jakob B. Nielsen
Jakob B. Nielsen 2020-4-16
Take a look at the builtin fourier analysis which is just perfect for an application such as the one you describe.

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