Wavalets sample for 1D signal

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Dear users of CodeProject!

Could someone show or direct me to the source code implementation of Wavelets? I mean the Wavelet transform for 1D signal (like sound).

I want to get the code snippet that will give me the spectrogram (similarly to the result of Short-Time Fourier Transform).

Any advices and critics are accepted here!)

Thanks to anyone who are reading this message and thinking about the answer!

BR,
Piligrim

Posted 20-Dec-11 11:24am

Viktor Signaievskyi

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Sergey Alexandrovich Kryukov · Accepted Answer · 2011-12-20T14:23:00

Solution 1

Please see:

http://www.bearcave.com/misl/misl_tech/wavelets/compression/index.html[^],
http://www.bearcave.com/misl/misl_tech/wavelets/index.html[^],
http://www.bearcave.com/misl/misl_tech/wavelets/packet/download.html[^],
http://www.amara.com/current/wavesoft.html[^],
http://www.maven.de/code/wavelet/[^].

Try to find some more: http://lmgtfy.com/?q=wavelet+compression+(%22C%2B%2B%22+OR+%22C%23%22)[^].

Just in case:
http://en.wikipedia.org/wiki/Wavelet[^],
http://en.wikipedia.org/wiki/Wavelet_transform[^].

—SA

Posted 20-Dec-11 14:23pm

Sergey Alexandrovich Kryukov

Comments

Mehdi Gholam 21-Dec-11 1:45am

Nice links, 5'ed

Sergey Alexandrovich Kryukov 21-Dec-11 11:55am

I don't think this is a great help, but thank you.
--SA

Viktor Signaievskyi 21-Dec-11 14:28pm

--SA, thank you for the quick reply and useful links!)

I have checked the source codes referring these links and found some useful like that one http://www.bearcave.com/misl/misl_tech/wavelets/packet/download.html. But faced the problems with compiling tests. Hope it is mine temporary problems...

It will be nice if someone can provide this "thread" exactly with the function like GetSpectrogrammUsingWavelet(...). I will understand if reader of this message suppose I wish too much.)

Thanks a lot!

P.S. In addition, some interesting example for Wavelet Transform of 1D signal. I haven't understood the Wavelet results (they are in graphical presentation)using this software.( The link is:
http://www.programmersheaven.com/2/Discreet-Wavelet-Transform

Sergey Alexandrovich Kryukov 21-Dec-11 14:32pm

No one in clear mind would say it's going to be easy...

Anyway, you are welcome.
Good luck, call again,
--SA

Viktor Signaievskyi 21-Dec-11 14:50pm

I am always looking exactly for an easy ways, but sometimes it is difficult:)

Thanks!

Sergey Alexandrovich Kryukov 21-Dec-11 14:34pm

By the way, if you agree it makes sense, please accept the answer formally (green button) -- thanks.
--SA

Viktor Signaievskyi 21-Dec-11 14:42pm

Fourier transform is very easy to understand...) It seems to me that I have got the idea of Wavelets but the problem is in realization... exactly in Fast Wavelet Transform...(

Sergey Alexandrovich Kryukov 21-Dec-11 14:51pm

Good to hear that. Unfortunately, for most people this is well beyond their understanding. Education required. To me, the hardest thing about debugging calculations is: nothing crashes :-). Figures are just a bit wrong, how to check it up?

Good luck,
--SA

Viktor Signaievskyi 21-Dec-11 14:55pm

Good luck to you too!:)