Hello all!
I could not find any satisfactory explanation for why, when computing the frequency response of a pole-zero plot, σ is taken to be zero, and thus s=jω.
I mean why is the frequency response computed along the imaginary (jω) axis, and not throughout the (σ, jω) plane?
and why does a crossing point (a pole or a zero) represents a change in slope by 20dB/decade in the frequency response?
Could anyone please help me with that?
I would be really grateful.
Warm Regards,
Abbas.
I could not find any satisfactory explanation for why, when computing the frequency response of a pole-zero plot, σ is taken to be zero, and thus s=jω.
I mean why is the frequency response computed along the imaginary (jω) axis, and not throughout the (σ, jω) plane?
and why does a crossing point (a pole or a zero) represents a change in slope by 20dB/decade in the frequency response?
Could anyone please help me with that?
I would be really grateful.
Warm Regards,
Abbas.