International Scholarly Research Notices

Review Article

Single Channel Speech Enhancement Techniques in Spectral Domain

Figure 9

Waveforms of speech enhancement results.
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(a) Observed signal
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(b) Spectral subtraction shown in  (6)
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(c) Wiener filter shown in  (10)
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(d) MAP estimation using Lotter’s PDF shown in  (22)
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(e) MAP estimation using adaptive PDF shown in  (25)