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Power analysis of low frequency component

  1. Nov 12, 2007 #1
    If I wish to measure the power of a very low-frequency periodic event (~.2Hz) in a voltage-time signal what is an ideal window size to use for power spectral analysis. The activity is very short in duration (~30ms) and occurs every 5-10 seconds. My problem is that I need a relatively large number of segments so that I can discard artifactual noise without losing data, but it seems to me that the window size is limited to at least 1/.2Hz. Is this true, or should the window length be at least 30ms. Since the activity isn't really oscillatory but rather periodic discharging, is power spectral analysis even useful in this case? Thanks for your time.

  2. jcsd
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