Frequency-Domain Implementation of the
- Start with a length rectangular window
- Take an -point DFT
- Convolve the DFT data with the 3-point smoother
Similarly, any Blackman window may be implemented as a 5-point smoother in the frequency domain. More generally, any -term Blackman-Harris window requires convolution of the critically sampled spectrum with a smoother of length .
Power-of-Cosine Window Family
Three-Term Blackman-Harris Window