Orthogonal and Biorthogonal Filter Banks
Orthogonal wavelet filter banks generate a single scaling function and wavelet, whereas biorthogonal wavelet filters generate one scaling function and wavelet for decomposition, and another pair for reconstruction. The orthogonal and biorthogonal wavelet filter banks are all suitable for N-D discrete wavelet and wavelet packet analysis. Daubechies’ least-asymmetric filters have the most linear phase response of the orthogonal filters. If you require linear phase, use biorthogonal filters. To learn about the wavelets available in Wavelet Toolbox™ that are suitable for continuous wavelet analysis, see Wählen eines Wavelets.
Funktionen
Themen
- Wählen eines Wavelets
Hier erfahren Sie, nach welchen Kriterien Sie das richtige Wavelet für Ihre Anwendung auswählen.
- Kritisch abgetastete Wavelet-Rekonstruktion
Hier erfahren Sie, wie Signale aus Wavelet-transformierten Daten rekonstruiert werden.
- Add Quadrature Mirror and Biorthogonal Wavelet Filters
This example shows how to add an orthogonal quadrature mirror filter (QMF) pair and biorthogonal wavelet filter quadruple to Wavelet Toolbox™.
- Scaling Function and Wavelet
Show how the number of vanishing moments affects smoothness biorthogonal filter pair.