#### vjfaisal

##### Full Member level 4

i m cofused in some Question as in previous post , yet not cleared....

i m posting some of my results(pics) of the above code , plz try download it and try to explain me from these ........

1) first the original signal in text form ,i read it in matlab

2) The FFt of the origial signal ( This gives a complex plane)

3) why we need Absolute of the FFT .

Q1. please see in pic , that taking absolute gives us replica after the samples of 240 (half) . what does this means......

Q2. after taking absolute, we take magnitude? what difference could be analyse in both these? please explain it complete.

Q3: also tell what is the difference between in N samples ( 512, 4096,e.t.c),

and n , in filtertering for.e.g [n,wn,beta,type]=kaiserord(fc,a,dev,Fs), and 'n' in the above example.

please help me in these question, detailed........

best regard

Added after 3 minutes:

here is my_results attached..........