  We study the light hadron correlators near the deconfining transition by
extracting the spectral function on quenched anisotropic lattices. We adopt the
method successfully applied to the charmonium systems: the use of the smeared
operators and the analysis method which is composed of the maximum entropy
method and the $\chi^2$ fitting assuming several forms. The numerical
simulations are performed on lattices of $a_s^{-1} \simeq 2$ GeV and
$a_s/a_t=4$, with the clover quark around the strange quark mass. Towards
applications to the plasma phase, we check the reliability of our procedure by
examining how the results for the correlators below $T_c$ ($N_t=32$) changes
under variation of input parameters such as the smearing function.
