Points

Is it necessary to taper two ends before fft a time series?

Is it necessary to taper two ends before fft a time series?
  1. What is tapering in signal processing?
  2. How many points for FFT?

What is tapering in signal processing?

A Taper (or apodization function or window function) is applied to a time signal to improve its properties in the frequency domain. Taper is a tool reached from the Waveform menu, that applies a tapering function to the signals in the active signal viewer.

How many points for FFT?

Therefore, with an FFT you can only evaluate a fixed length waveform containing 512 points, or 1024 points, or 2048 points, etc.

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What is the connection between the maximum time-value in seconds, number of samples N and the sampling frequency fs in Hz?
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