need to design the bandpass signal

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vjfaisal

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hi

please help in making the bandpass filter....
my original signal frequency is 0.1 to 100 hz
and i want to extract 12-18hz,

how i get it ,and how i design the filter,any easy method to extract it.....
if anyone knows please help me...

2) if i get my requried signal ,then how could i interface the matlab code with the microcontroller,because i m doing the project on BRAIN COMPUTER INTERFACE.

best regards
 

Hi,

One very easy method is to go to Matlab prompt and type "fdatool" this will open an interactive filter design and analysis tool box where you can put ur specifications and desgin any type of filter BP, HP, LP etc.

>>fdatool

BR,

Arif Khan

Please press helped me!!!
 

If you are looking for FIR filter you can use fir1() function in MATLAB.
 

using this i can't get result, iwant to calculate the filter coffients anf frequency response of filter
 

kindly help me in calculating the filter coffients



best regards
 

i assume that you are talking about a digital filter, so give us the sample rate, it is very important
 

you should go to FDATOOL in matlab, give the specified filter parameters to be designed, the FDATOOL inturn will give you all the necessary filter co-efficients needed, but be specific to what type of filter you are designing.
 

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