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From: kk KKsingh on 8 Jul 2010 23:58
Hi !

I need a simple help ! I think i am doing all wrong ! I want to test few bandlimited reconstruction algorithms !
1. Just wondering if some can type simple example of a signal , followed by making it band limited...it will be great help.......
2. When we apply bandpass filte r on signal in matlab and when we do FFT on signal.....is amplitude is in decibel in both of them

Thanks

Kumar
From: kk KKsingh on 9 Jul 2010 00:29
"kk KKsingh" <akikumar1983(a)gmail.com> wrote in message <i166oc$o71$1(a)fred.mathworks.com>...
> Hi !
>
> I need a simple help ! I think i am doing all wrong ! I want to test few bandlimited reconstruction algorithms !
> 1. Just wondering if some can type simple example of a signal , followed by making it band limited...it will be great help.......
> 2. When we apply bandpass filte r on signal in matlab and when we do FFT on signal.....is amplitude is in decibel in both of them
>
> Thanks
>
> Kumar

May be this will explain my problem better
In file exchange there is file which says it will reconstruct the data if

If X is a bandlimited (filtered) signal containing components at

% DC - 0.5Fs where Fs is the sample rate

here is my signal
n=512;
dt=.01;
t-=0:dt:(n-1);
s=sin(2*pi*10*t);
what should i do with this signal to make this thing work ! Nyquist frequency will be 1/2*dt, which means 50 Hz is my nyquist isnt it ...so i need to apply band pass filter from 0 to 50Hz please correct me if i am wrong ! How should i do it....

Kumar
From: kk KKsingh on 10 Jul 2010 02:27
"kk KKsingh" <akikumar1983(a)gmail.com> wrote in message <i168ig$dth$1(a)fred.mathworks.com>...
> "kk KKsingh" <akikumar1983(a)gmail.com> wrote in message <i166oc$o71$1(a)fred.mathworks.com>...
> > Hi !
> >
> > I need a simple help ! I think i am doing all wrong ! I want to test few bandlimited reconstruction algorithms !
> > 1. Just wondering if some can type simple example of a signal , followed by making it band limited...it will be great help.......
> > 2. When we apply bandpass filte r on signal in matlab and when we do FFT on signal.....is amplitude is in decibel in both of them
> >
> > Thanks
> >
> > Kumar
>
> May be this will explain my problem better
> In file exchange there is file which says it will reconstruct the data if
>
> If X is a bandlimited (filtered) signal containing components at
>
> % DC - 0.5Fs where Fs is the sample rate
>
> here is my signal
> n=512;
> dt=.01;
> t-=0:dt:(n-1);
> s=sin(2*pi*10*t);
> what should i do with this signal to make this thing work ! Nyquist frequency will be 1/2*dt, which means 50 Hz is my nyquist isnt it ...so i need to apply band pass filter from 0 to 50Hz please correct me if i am wrong ! How should i do it....
>
> Kumar

Sorry for that stupid question ! I got my answer ! I should do it by going in frequency domain just have to remove few columns :)

Thanks
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