From s space to time response with FFT

Hi!

I am looking for a method that can take an s domain
transfer function and use FFT/IFFT to obtain the
discrete time domain impulse response.

Are there any aproximations that allow that?

Thanks!
Atmapuri.

Atmapuri wrote:
> Hi!
> 
> I am looking for a method that can take an s domain
> transfer function and use FFT/IFFT to obtain the
> discrete time domain impulse response.
> 
> Are there any aproximations that allow that?
> 
> Thanks!
> Atmapuri.

Use a Laplace transform. s domain is continuous time.

Jerry
-- 
Engineering is the art of making what you want from things you can get.
�����������������������������������������������������������������������

Hi!

> Use a Laplace transform. s domain is continuous time.

I sampled the s domain frequency response with uniform
frequency step and made an IFFT on that. Got a nice
signal. I am constantly reading about problems when going
from analog do discrete and back. Will this give correct
or in some way distorted result?

Thanks!
Atmapuri.