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214 CHAPTER EIGHT
Hamming window This is a minor modification of the Hanning window (see
Figure 8-17). The math behind the Hamming window is shown at http://mathworld.
wolfram.com/HammingFunction.html.
Blackman window Similar to the Hamming and Hanning windows, the
Blackman window has an extra term to reduce the ripple (see Figure 8-18). The

0.0 0.1 0.2 0.3 0.4 0.5
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-80 db
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-120 db

FIGURE 8-17 Hamming DSP window and frequency response

0.0 0.1 0.2 0.3 0.4 0.5
0 db
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FIGURE 8-18 Blackman DSP window and frequency response