Compare impulse In-variance method and BLT method.

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Compare impulse In-variance method and BLT method.

written 4.6 years ago by

teamques10 ★ 64k

modified 2.0 years ago by

pedsangini276 • 4.7k

digital signal processing

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5.7kviews

written 4.6 years ago by

teamques10 ★ 64k

modified 4.6 years ago by

ankitpandey • 100

Impulse Invariance Method	Bilinear Transform Method
It is a many to one mapping technique.	It is a one to one mapping technique.
The transfer function relation is $z = e^{ST}$	The transfer function relation is $H(z) = H(s) $ / $S = \frac{2}{T} \ (\frac{1 - z^{-1}}{1 + \bar z^{-1}})$
Frequency relation $\Omega = \frac{W}{T}$	Frequency relation $\Omega = \frac{2}{T} \ tan \ (\frac{w}{2})$
No frequency warping exists.	Frequency warping exists.
Frequency aliasing exists.	NO Frequency aliasing.
Best suitable for LPF and BPF design.	Suitable for all types of filter.
Its a linear mapping.	Its a non linear mapping.
Pre warping is not required.	Pre warping is required.

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