  We present gravitational wave emission predictions based on three core
collapse supernova simulations corresponding to three different progenitor
masses. The masses span a large range, between 9.6 and 25 Solar masses, are all
initially non-rotating, and are of two metallicities: zero and Solar. We
compute both the temporal evolution of the gravitational wave strains for both
the plus and the cross polarizations, as well as their spectral decomposition
and characteristic strains.
