  In the case of split $GSpin$ groups, we prove an equality of $L$-functions
between automorphic local $L$-functions defined by the Langlands-Shahidi method
and local Artin $L$-functions. Our method of proof is based on previous results
of the first author which allow to reduce the problem to supercuspidal
representations of Levi subgroups of $GSpin$, by constructing Langlands
parameters for general generic irreducible admissible representations of $GSpin
$ from the one for generic irreducible supercuspidal representations of its
Levi subgroups.
