  We obtain discrete characterizations of wave front sets of Fourier-Lebesgue
and quasianalytic type. It is shown that the microlocal properties of an
ultradistribution can be obtained by sampling the Fourier transforms of its
localizations over a lattice in $\mathbb{R}^{d}$. In particular, we prove the
following discrete characterization of the analytic wave front set of a
distribution $f\in\mathcal{D}'(\Omega)$. Let $\Lambda$ be a lattice in
$\mathbb{R}^{d}$ and let $U$ be an open convex neighborhood of the origin such
that $U\cap\Lambda^{*}=\{0\}$. The analytic wave front set $WF_{A}(f)$
coincides with the complement in $\Omega\times(\mathbb{R}^{d}\setminus\{0\})$
of the set of points $(x_0,\xi_0)$ for which there are an open neighborhood
$V\subset \Omega\cap (x_0+U)$ of $x_0$, an open conic neighborhood $\Gamma$ of
$\xi_0$, and a bounded sequence $(f_p)_{p \in \mathbb{N}}$ in
$\mathcal{E}'(\Omega\cap (x_0+U))$ with $f_p= f$ on $V$ such that for some $h >
0$ \[ \sup_{\mu \in \Gamma \cap \Lambda} |\widehat{f_p} (\mu)| |\mu|^p \leq
h^{p+1}p!\:, \qquad \forall p \in \mathbb{N}. \]
