Three-Term Blackman-Harris Window
The classic Blackman window of the previous section is a three-term window in the Blackman-Harris family (
-
, and
.
- Side-lobe level
dB
- Side lobes roll off
per octave in the absence of aliasing (like rectangular and Hamming)
- All degrees of freedom (scaling aside) are used to minimize side lobes (like Hamming)
Figure 3.14 plots the three-term Blackman-Harris Window and its transform. Figure 3.15 shows the same display for a much longer window of the same type, to illustrate its similarity to the rectangular window (and Hamming window) at high frequencies.
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Frequency-Domain Implementation of the Blackman-Harris Family
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Matlab for the Classic Blackman Window