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PyWavelets / pywt

PyWavelets - Wavelet Transforms in Python
http://pywavelets.readthedocs.org
MIT License
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dmey wavelet not accurate enough #261

Open rgommers opened 7 years ago

rgommers commented 7 years ago

62 coefficients is not enough for accurate roundtripping (Matlab uses 102 coeffs), see https://groups.google.com/forum/#!topic/pywavelets/W3jFXbTNwrk for details

holgern commented 7 years ago

https://github.com/rafat/wavelib/commit/318e9b0f86d76e3c7e7fd428f7b44cff592ff5b2

Here are 102 coeffs available. But no reference given, from where the coefficients are taken.

holgern commented 7 years ago

In this paper, it is shown that 66 FIR coefficients are sufficient: https://ccrma.stanford.edu/~dattorro/Wavelet.pdf

But, no coefficients are listed. Only the method how to compute them...