Working of Digital filters...

RRITESH KAKKAR

Joined Jun 29, 2010
2,823
The impulse response is the response of the filter to a discrete input function consisting of a single impulse. Once you know the impulse response you can convolve the impulse response with ANY discrete input function and compute the output.
Then impulse response should be 0 or 1

Papabravo

Joined Feb 24, 2006
12,301
NO! Just as the discrete input function X(n) can have a series of values that are not limited 0 or 1 and the discrete output function Y(n) can have a series of values that are not limited to 0 and 1, so the discrete Impulse Response function H(n) can have values that are not limited to 0 and 1.

Also the domain of the impulse response function H(n) is limited to values of n in some range e.g. 0 <= n <=6, would be an impulse response function with 7 elements in the domain {0,1,2,3,4,5,6}. The range could be some set of integers or some set of real numbers or whatever.

• RRITESH KAKKAR

RRITESH KAKKAR

Joined Jun 29, 2010
2,823
NO! Just as the discrete input function X(n) can have a series of values that are not limited 0 or 1 and the discrete output function Y(n) can have a series of values that are not limited to 0 and 1, so the discrete Impulse Response function H(n) can have values that are not limited to 0 and 1.

Also the domain of the impulse response function H(n) is limited to values of n in some range e.g. 0 <= n <=6, would be an impulse response function with 7 elements in the domain {0,1,2,3,4,5,6}. The range could be some set of integers or some set of real numbers or whatever.
OK, So that mean.....
we can fix the output value in diff. discrete level by using impluse response, but we can do this with help of sample discrete value also...

So why we need impulse response that the question....??

Papabravo

Joined Feb 24, 2006
12,301
You need the impulse response to compute the output from the input.

• RRITESH KAKKAR