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   -> Volume 7, Issue 7

Question: Wavelet Packets and Density Estimation
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"Gary S. Collins" (

PostPosted: Thu Jul 16, 1998 2:47 pm    
Subject: Question: Wavelet Packets and Density Estimation
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#13 Question: Wavelet Packets and Density Estimation


My question is regards Wavelet Packets, and was wondering (if
possible) if anyone can tell me if there exists a method/algorithm to
calculate the wavelet packet function, w_{j,b,k} at an arbitrary
point, maybe in a similar fashion to that of the Daubechies-Lagarias
algorithm which calculates the scaling function by the infinite
product of suitably chosen matrices calculated from the filter coefs.
Another (related) question is whether there exists some relationship
between the wavelet packet function and scaling/or mother wavelet in
ordinary wavelet analysis. The questions are with regards to Density
Estimation where empirical coefs are needed to be calculated from the

Many thanks in advance

Gary Collins.

Gary S. Collins
Dept of Mathematical Statistics and Operational Research
Room 222
Laver Building
University of Exeter
EX4 4QE.
Tel: (01392) - 264465
FAX: 0044 01392 264460
Email :
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