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Thread: what are preliminaries to understand signal processing fundamentals?

  1. #1 what are preliminaries to understand signal processing fundamentals? 
    Forum Freshman unknown_artist's Avatar
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    my thesis consultant gave me a book ,and I do not understand almost anything. I can memorize it but the undertanding is not good.
    what to do? I add the first chapter to this thread


    Last edited by unknown_artist; February 4th, 2018 at 10:58 AM.
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    Forum Freshman unknown_artist's Avatar
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    I cannot attach the file,the system gives error sorry for it
    the chapter starts with dirac delta function ,linear operators and properties

    the book does not give the proofs and explanations,it is the exact place of the problem

    the title of book is "principles of computerized tomographic imaging"


    Last edited by unknown_artist; February 3rd, 2018 at 02:03 PM.
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  4. #3  
    Forum Freshman unknown_artist's Avatar
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    now ,I do not understand how to define intervals/margins for convolution. is there anyone to tell it to me?
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  5. #4  
    exchemist
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    Quote Originally Posted by unknown_artist View Post
    my thesis consultant gave me a book ,and I do not understand almost anything. I can memorize it but the undertanding is not good.
    what to do? I add the first chapter to this thread
    What is the subject of your thesis? Who chose it: you or someone else?
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  6. #5  
    Forum Freshman unknown_artist's Avatar
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    Quote Originally Posted by exchemist View Post
    Quote Originally Posted by unknown_artist View Post
    my thesis consultant gave me a book ,and I do not understand almost anything. I can memorize it but the undertanding is not good.
    what to do? I add the first chapter to this thread
    What is the subject of your thesis? Who chose it: you or someone else?
    it has not been definet yet.but probably the thesis consultant would make me ready for thesis. I newly started to thesis program. (MSc) at biophysicist. the book that he had given to me is really difficult and very complex.
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  7. #6  
    exchemist
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    Quote Originally Posted by unknown_artist View Post
    Quote Originally Posted by exchemist View Post
    Quote Originally Posted by unknown_artist View Post
    my thesis consultant gave me a book ,and I do not understand almost anything. I can memorize it but the undertanding is not good.
    what to do? I add the first chapter to this thread
    What is the subject of your thesis? Who chose it: you or someone else?

    it has not been definet yet.but probably the thesis consultant would make me ready for thesis. I newly started to thesis program. (MSc) at biophysicist. the book that he had given to me is really difficult and very complex.
    Well I can certainly see that, in modern biophysics, computerised tomography is pretty important. I think you should speak to your supervisor about it if you find it hard and see if there are other simpler books to help get you to the level at which you can understand this one.

    But what is your science background? If this is an MSc, I presume you have a first degree already - in what subject?
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  8. #7  
    Forum Freshman unknown_artist's Avatar
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    Quote Originally Posted by exchemist View Post
    Quote Originally Posted by unknown_artist View Post
    Quote Originally Posted by exchemist View Post
    Quote Originally Posted by unknown_artist View Post
    my thesis consultant gave me a book ,and I do not understand almost anything. I can memorize it but the undertanding is not good.
    what to do? I add the first chapter to this thread
    What is the subject of your thesis? Who chose it: you or someone else?
    I am mathematcian ,I have mathematics BSc degree. I also hae one more question.

    which of these better : computer engineering (MSc )
    biophysics (MSc)?

    I aks this because I think in biophysics,it might be probable to be jobless after graduation. but in comuter engineering it seems better aout job.


    it has not been definet yet.but probably the thesis consultant would make me ready for thesis. I newly started to thesis program. (MSc) at biophysicist. the book that he had given to me is really difficult and very complex.
    Well I can certainly see that, in modern biophysics, computerised tomography is pretty important. I think you should speak to your supervisor about it if you find it hard and see if there are other simpler books to help get you to the level at which you can understand this one.

    But what is your science background? If this is an MSc, I presume you have a first degree already - in what subject?
    I have mathematics degree (BSc)
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  9. #8  
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    Quote Originally Posted by unknown_artist View Post
    I have mathematics degree (BSc)
    Then may I assume that you've studied differential equations, linear algebra, as well as Laplace and Fourier transforms? Do the terms "Dirac delta function" and "superposition integral" sound familiar? If so, then convolution should be old hat.
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  10. #9  
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    Quote Originally Posted by tk421 View Post
    Quote Originally Posted by unknown_artist View Post
    I have mathematics degree (BSc)
    Then may I assume that you've studied differential equations, linear algebra, as well as Laplace and Fourier transforms? Do the terms "Dirac delta function" and "superposition integral" sound familiar? If so, then convolution should be old hat.
    that is almost wholly correct,but now I do not remember any of these.so,may I ask what will happen if the thesis consultant give me a duty and I fail?
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  11. #10  
    exchemist
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    Quote Originally Posted by unknown_artist View Post
    Quote Originally Posted by tk421 View Post
    Quote Originally Posted by unknown_artist View Post
    I have mathematics degree (BSc)
    Then may I assume that you've studied differential equations, linear algebra, as well as Laplace and Fourier transforms? Do the terms "Dirac delta function" and "superposition integral" sound familiar? If so, then convolution should be old hat.
    that is almost wholly correct,but now I do not remember any of these.so,may I ask what will happen if the thesis consultant give me a duty and I fail?
    Well that is pretty feeble. Revise the damned things, if you've forgotten!

    It strikes me you are showing remarkably little initiative for someone embarking on a higher degree. You are not a child any more.
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  12. #11  
    Forum Freshman unknown_artist's Avatar
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    Quote Originally Posted by exchemist View Post
    Quote Originally Posted by unknown_artist View Post
    Quote Originally Posted by tk421 View Post
    Quote Originally Posted by unknown_artist View Post
    I have mathematics degree (BSc)
    Then may I assume that you've studied differential equations, linear algebra, as well as Laplace and Fourier transforms? Do the terms "Dirac delta function" and "superposition integral" sound familiar? If so, then convolution should be old hat.
    that is almost wholly correct,but now I do not remember any of these.so,may I ask what will happen if the thesis consultant give me a duty and I fail?
    Well that is pretty feeble. Revise the damned things, if you've forgotten!

    It strikes me you are showing remarkably little initiative for someone embarking on a higher degree. You are not a child any more.
    Exchemist ...are not you too tough?
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  13. #12  
    Bullshit Intolerant PhDemon's Avatar
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    Probably less tough than your thesis advisor would be...
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  14. #13  
    exchemist
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    Quote Originally Posted by unknown_artist View Post
    Quote Originally Posted by exchemist View Post
    Quote Originally Posted by unknown_artist View Post
    Quote Originally Posted by tk421 View Post
    Quote Originally Posted by unknown_artist View Post
    I have mathematics degree (BSc)
    Then may I assume that you've studied differential equations, linear algebra, as well as Laplace and Fourier transforms? Do the terms "Dirac delta function" and "superposition integral" sound familiar? If so, then convolution should be old hat.
    that is almost wholly correct,but now I do not remember any of these.so,may I ask what will happen if the thesis consultant give me a duty and I fail?
    Well that is pretty feeble. Revise the damned things, if you've forgotten!

    It strikes me you are showing remarkably little initiative for someone embarking on a higher degree. You are not a child any more.
    Exchemist ...are not you too tough?
    I just think it is about time we heard from you what you are going to try to do about this situation. You could talk to your supervisor. You could talk to others this supervisor is also supervising, to find out how they managed. You could find another MSc biophysics student and see whether they had to study this, and if so whether they used the same book or a different (less demanding?) one, and how they coped.

    Perhaps you have done some of this but if so you have not said what you have discovered.

    It may be that this supervisor likes to throw people into the "deep end", to see whether they have the right stuff to continue the programme. Who knows? Perhaps you should find out, eh?

    And now I see you are asking PhDemon whether differential equations are required. I find this an odd question. Surely you are aware that wave equations are differential equations, are you not?

    Does it not seem likely, then, that understanding radiation, or radio signals, or alternating current, or anything like that will require some familarity with differential equations?

    Tell me, what qualifications do you have in physics? Do you know any physics at all?
    Last edited by exchemist; February 9th, 2018 at 01:22 PM.
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  15. #14  
    Forum Freshman unknown_artist's Avatar
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    Quote Originally Posted by exchemist View Post
    Quote Originally Posted by unknown_artist View Post
    Quote Originally Posted by exchemist View Post
    Quote Originally Posted by unknown_artist View Post
    Quote Originally Posted by tk421 View Post
    Quote Originally Posted by unknown_artist View Post
    I have mathematics degree (BSc)
    Then may I assume that you've studied differential equations, linear algebra, as well as Laplace and Fourier transforms? Do the terms "Dirac delta function" and "superposition integral" sound familiar? If so, then convolution should be old hat.
    that is almost wholly correct,but now I do not remember any of these.so,may I ask what will happen if the thesis consultant give me a duty and I fail?
    Well that is pretty feeble. Revise the damned things, if you've forgotten!

    It strikes me you are showing remarkably little initiative for someone embarking on a higher degree. You are not a child any more.
    Exchemist ...are not you too tough?
    I just think it is about time we heard from you what you are going to try to do about this situation. You could talk to your supervisor. You could talk to others this supervisor is also supervising, to find out how they managed. You could find another MSc biophysics student and see whether they had to study this, and if so whether they used the same book or a different (less demanding?) one, and how they coped.

    Perhaps you have done some of this but if so you have not said what you have discovered.

    It may be that this supervisor likes to throw people into the "deep end", to see whether they have the right stuff to continue the programme. Who knows? Perhaps you should find out, eh?

    And now I see you are asking PhDemon whether differential equations are required. I find this an odd question. Surely you are aware that wave equations are differential equations, are you not?

    Does it not seem likely, then, that understanding radiation, or radio signals, or alternating current, or anything like that will require some familarity with differential equations?

    Tell me, what qualifications do you have in physics? Do you know any physics at all?
    mmm ,yes I tried to speak with other MSc students. the PhD students are saying that my thesis advisor is not doing exam. the course simply passes. but really I again don't feel me relief , may the supervisor be really thinking that I am free to learn/study or not? (if there is no exam??)

    and what is the meaning of deep end. now the first week is end. I am still studying fourer series. hey exchemist ,I think everyone knows riemanian integral,or simple differential equations.

    mm ,wave equation and differential equation? , can you model it please ,I am probably unaware.
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  16. #15  
    Forum Freshman unknown_artist's Avatar
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    Quote Originally Posted by PhDemon View Post
    Probably less tough than your thesis advisor would be...
    are you serious?

    but both PhD students and MSc students are saying that this thesis advisor is not doing exam ...
    and your reply (?)
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  17. #16  
    exchemist
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    Quote Originally Posted by unknown_artist View Post
    Quote Originally Posted by exchemist View Post
    Quote Originally Posted by unknown_artist View Post
    Quote Originally Posted by exchemist View Post
    Quote Originally Posted by unknown_artist View Post
    Quote Originally Posted by tk421 View Post
    Quote Originally Posted by unknown_artist View Post
    I have mathematics degree (BSc)
    Then may I assume that you've studied differential equations, linear algebra, as well as Laplace and Fourier transforms? Do the terms "Dirac delta function" and "superposition integral" sound familiar? If so, then convolution should be old hat.
    that is almost wholly correct,but now I do not remember any of these.so,may I ask what will happen if the thesis consultant give me a duty and I fail?
    Well that is pretty feeble. Revise the damned things, if you've forgotten!

    It strikes me you are showing remarkably little initiative for someone embarking on a higher degree. You are not a child any more.
    Exchemist ...are not you too tough?
    I just think it is about time we heard from you what you are going to try to do about this situation. You could talk to your supervisor. You could talk to others this supervisor is also supervising, to find out how they managed. You could find another MSc biophysics student and see whether they had to study this, and if so whether they used the same book or a different (less demanding?) one, and how they coped.

    Perhaps you have done some of this but if so you have not said what you have discovered.

    It may be that this supervisor likes to throw people into the "deep end", to see whether they have the right stuff to continue the programme. Who knows? Perhaps you should find out, eh?

    And now I see you are asking PhDemon whether differential equations are required. I find this an odd question. Surely you are aware that wave equations are differential equations, are you not?

    Does it not seem likely, then, that understanding radiation, or radio signals, or alternating current, or anything like that will require some familarity with differential equations?

    Tell me, what qualifications do you have in physics? Do you know any physics at all?
    mmm ,yes I tried to speak with other MSc students. the PhD students are saying that my thesis advisor is not doing exam. the course simply passes. but really I again don't feel me relief , may the supervisor be really thinking that I am free to learn/study or not? (if there is no exam??)

    and what is the meaning of deep end. now the first week is end. I am still studying fourer series. hey exchemist ,I think everyone knows riemanian integral,or simple differential equations.

    mm ,wave equation and differential equation? , can you model it please ,I am probably unaware.
    You should not need me to tell you the form of a wave equation. There are numerous places to find this, starting with Wikipedia.

    If you are really this helpless and dependent, I begin to wonder if you are suited to this type of study.
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  18. #17  
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    Quote Originally Posted by unknown_artist View Post
    Quote Originally Posted by PhDemon View Post
    Probably less tough than your thesis advisor would be...
    are you serious?

    but both PhD students and MSc students are saying that this thesis advisor is not doing exam ...
    and your reply (?)
    He is absolutely serious, and you should pay attention to what he says -- he's earned his degree, so he knows what he's talking about. Sorry to be harsh, but I would never take on a student like you. You seem completely helpless. In less time than it would take to lead you by the hand to each and every bit of knowledge you need (or have forgotten, by your own words), I could do everything myself. I only take on students who are going to lessen, not increase, my burden [I already have a degree; if you want one, too, then you need to do the work]. You also appear to suffer from a tragic lack of common sense, which lack is itself a serious problem. You want exchemist (and everyone else) to tell you things that are, or should be, obvious.

    Step 1: Figure out what knowledge you need.
    Step 2: Figure out what of that needed knowledge you have.
    Step 3: Acquire the remainder.
    Step 4: Do the work.

    Instead, you worry about this and that. Worrying is not a strategy. It's not going to get you anywhere. In the time it's taken you to post here, you could have reviewed the maths that you allegedly studied for your undergraduate degree. You could have gone to the library and started reading books about signal processing (or whatever books contain the requisite knowledge to understand that book that is confusing you). Etc.

    In short, there are a great many things that you could be doing to improve your circumstances. I don't see you doing any of those things.
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  19. #18  
    Forum Freshman unknown_artist's Avatar
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    Then may I assume that you've studied differential equations, linear algebra, as well as Laplace and Fourier transforms? Do the terms "Dirac delta function" and "superposition integral" sound familiar? If so, then convolution should be old hat.
    if you are implying as differential equation,then this is very easy. if you implied fourier series and transforms then these are again not difficult (I have newly completed this one),but the partial derivated differential equations ? unfortunately I am not good at this .

    let see what I am asking by this thread

    like this ;

    which of these subjects are required ?

    -->>laurent series
    -->> convergence-divergence at series (general,all)
    -->> general integral forms
    -->> beta-gamma functions
    -->> normal distribution
    -->> differential equations (up to cauchy-eular equation)
    -->> differential equations (cauchy -euler and latter)
    -->>partial differential equations
    -->> curve & surface integrals
    -->>green theorem
    -->>stokes theorem
    -->>divergans theorem
    -->>other (specify please)

    etc
    Last edited by unknown_artist; February 11th, 2018 at 08:59 AM.
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