tags: ece-402 dsp
Spectrum Analysis Window
A spectrum analysis window (or window function) is a [windowing] function used to extract a short time segment from some longer [signal] to perform [spectral analysis] on that signal.
- models how the human ear analyzes [frequencies] over short segments of [sound] (about 10-20 ms in length)
- main benefit is the minimization of side lobes, which cause "cross talk" in the estimated [spectrum] from one [frequency] to another and causes faulty data
- used in both [long-window-time-varying-spectral-analysis] and [short-window-time-varying-spectral-analysis]
Window Types
- Rectangular
- Hamming
- Blackman-Harris (sums of cosines)
- Bartlett (triangular)
- Poisson (exponential)
- [Kaiser] ([Bessel])
- Dolph-Chebyshev
- Gaussian