Enumeration identifying windows applied to data before doing FFTs.
Hanning, or Hann window http://en.wikipedia.org/wiki/Hann_function
Hanning, or Hann window http://en.wikipedia.org/wiki/Hann_function
Ones in the middle, and tapers down to zero with a cosine at the ends.
Unity or boxcar is all ones.
Unity or boxcar is all ones.