how to caculate the norm infinite with the limit frequency domain

In matlab, H infinity norm is caculated with order 'norm(sys,inf)' as sup singular values.

But the frequency domain w is contained into [0,inf], if I want to caculate this with the limited domain [w1,w2], how to do this in matlab?

Thank you

Answer 1

[jingwen]

may be can add a filter to limite the caculate domain, for example, s/(s+w1)(s+w2), however, the effect is not very good.

Is it possible to caculate with the norm directly in matlab?