Presentation Wavelet Transforms

[rezamt2010]

I have to do audio compression using Daubechies 4 and I can't find anything for newbies. If you know any links please help me.

thanks

[lawfordp]

What's the point of a lecture without audio?

[LaksoPenang]

Dear jsantarc,

I'm just wondering... where did you get the equations DPWT, DTWT and DWT? can you give me the reference?

TQ

[jsantarc]

Alter the scaling parameter in matlab you have to some calculations if you want it to be orthogonal, the Shannon scaling function will never be orthogonal on matlab because it dose not have compact support in time

[trr12]

I didn't like the music, it makes it a bit ridiculous, to be honest with you. But the simulations are cute.

[dibbuck]

makes little sense to me --- too quick jumping between images without explaination

[youvev54]

Very nice video! You may consider showing the original signal a few seconds longer before applying the wavelet analysis. Great Job!!!

[Dsus7]

very nice presentation, makes me want to learn wavelets.

[umarnumair]

good work. makes me better understand about wavelet, Alhamdulillah. Hope to see more. TQVM.

[IHateMadeUpNames]

(It appears that the signal itself is being transformed and then a CWT is being taken of the transformation. It may help to show the original signal paired with its CWT.

I came here because of a link on Wikipedia (which at the time of this posting has been removed). I could argue for its re-inclusion, but I personally think the video could be improved.

[IHateMadeUpNames]

I swear I posted a comment earlier today but it didn't appear to register. I think this film is fine as part of a presentation piece. The animation is good and professional. But there's too little explanation as to what's being featured to have it stand by itself. For instance, what exactly is being featured at 1:27 or 1:33? All I can tell is that I'm being shown a CWT But what exactly is being analyzed... why do the CWT coefficients ah....move?

[IHateMadeUpNames]

The animations are very good. I could see using the film a part of a presentation on wavelets. But without the side explanation, it doesn't exactly stand up by itself IMHO.