No BSD License  

Highlights from
Numerical differentiation based on wavelet transforms

5.0 | 8 ratings Rate this file 49 Downloads (last 30 days) File Size: 966 KB File ID: #13948 Version: 1.0
image thumbnail

Numerical differentiation based on wavelet transforms


Jianwen Luo (view profile)


14 Feb 2007 (Updated )

Numerical differentiation based on wavelet transforms (CWT and DWT)

| Watch this File

File Information

Numerical differentiation is important in various applications. However, it should be taken with caution because it can greatly amplify the noise in the data, especially at high frequencies. When a wavelet function is the derivative of a smoothing function, the wavelet transform has the combined properties of smoothing and differentiation.

Required Products Wavelet Toolbox
MATLAB release MATLAB 7.1.0 (R14SP3)
Tags for This File   Please login to tag files.
Please login to add a comment or rating.
Comments and Ratings (9)
10 Jul 2014 karlosgk

karlosgk (view profile)

12 Aug 2013 Yotam Stern

excellent work!

really helpful, i was just looking into this and stumbled upon this file through google.

19 Apr 2013 James Ganong

Your method worked to solve a problem that stumped me for years! I work with tracking data from ocean animals. These data can be very noisy, but I was able to extract good speed data.

05 Apr 2012 Marc Cote

Thank you, exactly what I needed.

07 Apr 2009 Gianluca

Do you think the same can be applied also for integration?

Comment only
07 Apr 2009 Gianluca  
30 Nov 2007 Zika Zivic

Really very nice. Thanks.

24 Oct 2007 Z. Haiyun

Excellent. It may be perfect by adding more spline wavelet.

05 Mar 2007 someone used this

superbly done!!

Contact us