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Wavelet Daubechies 2 (db2)

Properties

Family: Daubechies (db)

Properties: asymmetric, orthogonal, biorthogonal.

Wavelet and scaling functions

  • Daubechies 2 Scaling function

    Scaling function φ

  • Daubechies 2 Wavelet function

    Wavelet function ψ

Coefficients

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Decomposition low-pass filter (copy↓)
Daubechies 2 Decomposition low-pass filter
  1. h0 = -0.1294095226
  2. h1 =  0.2241438680
  3. h2 =  0.8365163037
  4. h3 =  0.4829629131
Reconstruction low-pass filter (copy↓)
Daubechies 2 Reconstruction low-pass filter
  1. h'0 =  0.4829629131
  2. h'1 =  0.8365163037
  3. h'2 =  0.2241438680
  4. h'3 = -0.1294095226
Decomposition high-pass filter (copy↓)
Daubechies 2 Decomposition high-pass filter
  1. g0 = -0.4829629131
  2. g1 =  0.8365163037
  3. g2 = -0.2241438680
  4. g3 = -0.1294095226
Reconstruction high-pass filter (copy↓)
Daubechies 2 Reconstruction high-pass filter
  1. g'0 = -0.1294095226
  2. g'1 = -0.2241438680
  3. g'2 =  0.8365163037
  4. g'3 = -0.4829629131