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Download QR code; Print/export Download as PDF; Printable version; In other projects ... The generating functions are also known as scaling functions or father wavelets.
A wavelet is a mathematical function used to divide a given function or continuous-time signal into different scale components. Usually one can assign a frequency range to each scale component. Each scale component can then be studied with a resolution that matches its scale. A wavelet transform is the representation of a function by wavelets.
Scaling of the wavelet-basis-function by this factor and subsequent FFT of this function Multiplication with the transformed signal YFFT of the first step Inverse transformation of the product into the time domain results in Y W ( c , τ ) {\displaystyle Y_{W}(c,\tau )} for different discrete values of τ {\displaystyle \tau } and a discrete ...
Daubechies wavelets are widely used in solving a broad range of problems, e.g. self-similarity properties of a signal or fractal problems, signal discontinuities, etc. The Daubechies wavelets are not defined in terms of the resulting scaling and wavelet functions; in fact, they are not possible to write down in closed form.
Both the scaling function (low-pass filter) and the wavelet function (high-pass filter) must be normalised by a factor /. Below are the coefficients for the scaling functions for C6–30. The wavelet coefficients are derived by reversing the order of the scaling function coefficients and then reversing the sign of every second one (i.e. C6 ...
Download as PDF; Printable version; ... move to sidebar hide. Scaling function may refer to: Critical exponent § Scaling functions ... Wavelet § Scaling function