Can you explain the usefulness of Laplace Transformation in signal analysis?

[ritzmax72]

Please anyone tell me how laplace transformation is derived. It transform a funtion into new one. Then what we get? Any example to show how it make a function easy to solve?

 

[n.karthick]

Yeah, Laplace transform can transform a differential equation into algebraical equation which is much easier to manipulate and when we take inverse transform we get solution of that differential equation.

 

[paulfr]

A Fourier Transform converts a Steady State Time Domain function/signal to the Frequency Domain.
Basically it integrates [adds up] the energy at differenct frequecies to obtain the signal's spectrum.
It is what a Spectrum Analyzer does.
A variable frequency filter measures the energy at different frequencies

The Laplace Transform [LT] does the same thing but for Transient [non Steady State] signals and can
show the transient response. It is a fundamental tool in Dynamics as both signals and
"black boxes" have a LT and you can just multiply them to get the output response in the Complex Domain.
Then an Inverse Transform produces the output in the Time Domain.

 

[ritzmax72]

A Fourier Transform converts a Steady State Time Domain function/signal to the Frequency Domain.
Basically it integrates [adds up] the energy at differenct frequecies to obtain the signal's spectrum.
It is what a Spectrum Analyzer does.
A variable frequency filter measures the energy at different frequencies

The Laplace Transform [LT] does the same thing but for Transient [non Steady State] signals and can
show the transient response. It is a fundamental tool in Dynamics as both signals and
"black boxes" have a LT and you can just multiply them to get the output response in the Complex Domain.
Then an Inverse Transform produces the output in the Time Domain.

Thanks a lot