I have a signal that is full of noise when I extract its derivatives. Please refer to figure [login to view URL] and [login to view URL]
As you can see, once we differentiate the signal, noise begins to show up, and if I tried to derive the 8th derivative for example, noise will explode.
The Objective here is to derive as many derivatives as we want through reconstruction the original signal without noise so we can differentiate it, or extract the first derivative then smooth it and differentiate then smooth... iteratively.
The key here is that your solution MUST be casual smoothing/filtering, which means that it does NOT induces any delay like digital filter, in other words, Calculating the value of the smoothed/filtered X value doesn't depend on X+1, X+2.....Xn
I've included [login to view URL], which includes the signal along with its derivatives, the first column is the signal and rest of columns are its derivatives (cut from historical data set and the derivatives derived through digital filter, for testing purposes). Your solution MUST be so close to the extracted derivatives in the file
Your solution must be universally solution which means it could be used on any signal of choose.
I prefer the algorithm to be in Matlab but it's not a must.
Expertise in MATLAB with 5 years of academic, industrial and freelancing experience in this field
I have completed various protects related this field as you can view my profile for completed projects.
I can provide you your complete task in decided time frame with quality work.
I can also provide you my sample work if required. We can discuss further details in the message box
Best,
I have read the description, as i have worked on things related to audio filtering i think a can help you with implementing your work in matlab!
I can ensure you that i will do a better job and submit all your requirements on time.
How can i help you?
Relevant Skills and Experience
I'm currently working on a drone detection surveillance project which is totally based on Matlab.
Recently worked on a project on video compression using the latest technique HEVC in matlab.
Other projects like- Filtering audio signals, Feature extraction, Training Models (SVM,KNN), Simulink
Hello,
I'm a PhD candidate in Electrical Engineering (control systems).
I'm expert in MATLAB programming and by strong mathematical and statistical background, have good flexibility for solve your project. Evidence of this claim exist in the portfolio.
I have read your project description and I can help you.
Please send me the details of your project in the chat.
Thanks for attention
Hi there. I read your project propose and I can help you. You need a causal filter or a smoothing technique that doesn't depend of future values (x+1, x+2, ...). Please, message me and give me more details about the project, for understand it completely.
I have managed to reduce a lot of the noise and my output matches quite well with the expected derivative.
I would like to share with you my results. However, for that you will need to initiate chat with me. I can then share my data via the chat attachment option.
My method is based on tweaking the definition of the derivative.
Hope to hear from you.
Have a good day.
Hello Sir,
I would like to start my first project on freelancer.com with yours!
I am expert on mechanical vibration and modal analysis.
We can be in touch during the project so I will update you with intermediate results.
Looking forward to hearing from you
Regards /Mehdi