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From: Seng Hau Loh on 2 Apr 2010 04:36
hi all,

I have a question on there are so many different types of Wavelet Families such as Biorthogonal, Daubechies, Haar, and etc.

What is the best selection for signal processing using dwt?
What are the major differences between so many types of wavelet families?

Thanks.
From: Wayne King on 2 Apr 2010 04:50
"Seng Hau Loh" <lsh4159(a)hotmail.com> wrote in message <hp4a9l$rt1$1(a)fred.mathworks.com>...
> hi all,
>
> I have a question on there are so many different types of Wavelet Families such as Biorthogonal, Daubechies, Haar, and etc.
>
> What is the best selection for signal processing using dwt?
> What are the major differences between so many types of wavelet families?
>
> Thanks.

Hi Seng, that really isn't a question that can be adequately answered or even addressed on this forum. The short answer is there is no BEST selection for signal processing. If you start with one of the Daubechies extremal phase, 'db#', or Daubechies least asymmetric wavelets, 'sym#', you should be fine.

Wayne
From: Steven Lord on 2 Apr 2010 09:31

"Wayne King" <wmkingty(a)gmail.com> wrote in message
news:hp4b4g$9i1$1(a)fred.mathworks.com...
> "Seng Hau Loh" <lsh4159(a)hotmail.com> wrote in message
> <hp4a9l$rt1$1(a)fred.mathworks.com>...
>> hi all,
>>
>> I have a question on there are so many different types of Wavelet
>> Families such as Biorthogonal, Daubechies, Haar, and etc. What is the
>> best selection for signal processing using dwt?
>> What are the major differences between so many types of wavelet families?
>>
>> Thanks.
>
> Hi Seng, that really isn't a question that can be adequately answered or
> even addressed on this forum. The short answer is there is no BEST
> selection for signal processing. If you start with one of the Daubechies
> extremal phase, 'db#', or Daubechies least asymmetric wavelets, 'sym#',
> you should be fine.

Since this is a general signal processing question, you might want to
describe the application you're trying to create using wavelets on the
signal processing newsgroup comp.dsp and ask the signal processing experts
there for their recommendations. Once you have that information, if you
need help working with those wavelets in MATLAB (say using Wavelet Toolbox)
then you can post those questions here. If your news server doesn't carry
comp.dsp, there are a number of freely available servers that do, among them
Google Groups (http://groups.google.com).

--
Steve Lord
slord(a)mathworks.com
comp.soft-sys.matlab (CSSM) FAQ: http://matlabwiki.mathworks.com/MATLAB_FAQ


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