"Approximation" computes a coarser approximation of the input
signal. The signal is reconstructed from its discrete wavelet
transform by using only the values of the approximation at the given octave n. The result is the projection of the input signal onto a subspace of the multiresolution analysis that corresponds to the current wavelet. The subspace is generated by scaled and translated versions of the scaling function.
Its parameter is the
- number n of octaves (decomposition depth).
y = WaveletApprox(x,n);
Define wavelet, Load wavelet,
Save wavelet, Decompose,