  Gamow-Teller (GT) and spin-dipole (SD) strength distributions of four doubly
magic nuclei $^{48}$Ca, $^{90}$Zr, $^{132}$Sn and $^{208}$Pb are studied by the
self-consistent Hartree-Fock plus random phase approximation (RPA) method. The
Skyrme forces SAMi and SAMi-T without/with tensor interactions are adopted in
our calculations. The calculated strengths are compared with available
experimental data. The RPA results of GT and SD strengths of all four nuclei
show fine agreement with observed GT and SD resonances in energy. A small GT
peak below the main GT resonance is better described by the Skyrme interaction
SAMi-T with the tensor terms. The quenching factors for GT and SD are extracted
from the comparisons between RPA results and experimental strengths. It is
pointed out that the quenching effect on experimental SD peaks is somewhat
modest compared with that on GT peaks in the four nuclei.
