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Recent content by ranjeeth

  1. R

    Spaces in the input argument in perl

    perl input argument Is there a way to have spaces in ARGV[0], ARGV[1] etc in Perl ? eg if I type perl -w search.pl a1 a2, then the arguments are seperated by space, I have an argument which has a space, How do I deal with it? Still waiting for an answer ... Thanks in advance
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    Spaces in the input argument in perl

    perl passing single input argument I have written a small code in Perl to search for a given string in text files in a given directory. I take the directory name and string as input arguments to the perl program. Perl takes the space as the seperator for the argument, this does not allow for...
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    What is the geometrical significance of eigen values?

    Re: EIGEN VALUES (significance in LSI systems) The eigen value of a matrix is defined as follows : if Ax = λx then λ is called the eigen value of the matrix A. In continuous time signals: e^*(j*Wo*t) is an eigen value for a LSI system H, since H(x) = λ*x ---- where x = e^(j*Wo*t) i.e If the...
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    What is Negative Frequency!!

    Consider this sin (Wo) = (exp (j*Wo) - exp (-iWo))/2 cosine (Wo) = (exp (j*Wo)+- exp (-iWo))/2 By using fourier series/transformation we know complex signals (including real signals) can be represented in terms of summation/integration of compex exponentials. So we can see that though a...
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    difference between impulses in dt and ct cases

    I agree with cladiocamera δ[3n-2] doesnot exist. A simple technique would be to substitute 3n-2 = k Now δ[k] = 1 for k=0 = 0 for all other k ε I { ...,-2,-1,0,1,2,3 .... } Thus at k =0 we have 3n-2 =0 which gives n =2/3 δ[3n-2] = 1 at n = 2/3 For any...
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    difference between impulses in dt and ct cases

    Hi , δ[n] is discrete time domain signal defined as follows : δ[n] = 1 n = 0 δ[n] = 0 for all n ≠ 0 δ(t) is ct signal defined as follows : ∫ ( δ(t) , -∞ , ∞ ) = 1 ; The amplitude of δ(t) is not defined. The area under the curve is 1. δ(t) (unit impulse ) is a signal with ∞ amplitude at...
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    Can you inform me about LMS algorithm ?

    I need to know about LMS algorithm ( in the context of equalisers ) . How is Decision feedback used in equalizers ? How is adaptive equalisation done? How can we simulate/ implement such equalisers ? Any help would be appreciated?
  8. R

    adjusting characters in a field

    Hi , i think i need to frame my question properly , i wish to align characters and not numbers. for eg given strings Jane Joe Mary etc i wish to store these strings as strings of 10 characters ,the trailing characters being spaces. is there a standard perl function for doing this.
  9. R

    What exactly is a hyperterminal and how to use it ?

    What exactly is hyperterminal and how do i use it ?
  10. R

    reading wave file in MATLAB

    Hi I am not sure if wavread gives binary result if it does what are the additional arguments to the function
  11. R

    i need to understand fourier transform.

    Hope this helps ia m saying the same things that the others said but in a slightly different manner Fourier representation of a signal is basically unique resolution of the signal into its components In physics when dealing with vectors , u might have learnt resolution of vector into...
  12. R

    adjusting characters in a field

    C uses "%6.2f" etc to align numbers properly ? Can it be done with characters in PERL i.e adjusting a group of characters within a field so as to have proper alignment for eg I wish to adjust and align an array of characters into a field of say 10.
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    reading wave file in MATLAB

    Is it possible to read a audio file as a binary one using MATLAB.
  14. R

    How to run a .pl format program ?

    Re: Problem with Perl On the DOS prompt move into the directory where U have the perl software, using the proper pathname type perl <filemame.pl>
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    Is sin (n) the periodic signals ?

    sin (n) cannot b periodic for n ==> integer By definition we need 2 have sin(n)=sin(n+N) for periodicity where N is an integer. Now sin(n+K*pi)=sin(n) where K is an integer. therefore N must equal K*pi for sine function 2 be periodic, K*pi can never be an...

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