We study the spaces of Poisson, compound Poisson and Gamma noises as specia
l cases of a general approach to non-Gaussian white noise calculus, see Ref
. 18. We use a known unitary isomorphism between Poisson and compound Poiss
on spaces in order to transport analytic structures from Poisson space to c
ompound Poisson space. Finally we study a Fock type structure of chaos deco
mposition on Gamma space.