  Twisted 2D bilayer materials are created by artificial stacking of two
monolayer crystal networks of 2D materials with a desired twisting angle
$\theta$. The material forms a moir\'e superlattice due to the periodicity of
both top and bottom layer crystal structure. The optical properties are
modified by lattice reconstruction and phonon renormalization, which makes
optical spectroscopy an ideal characterization tool to study novel physics
phenomena. Here, we report a Raman investigation on a full period of the
twisted bilayer (tB) WSe$_2$ moir\'e superlattice (\textit i.e. 0{\deg} $\leq
\theta \leq$ 60{\deg}). We observe that the intensity ratio of two Raman peaks,
$B_{2g}$ and $E_{2g}/A_{1g}$ correlates with the evolution of moir\'e period.
The Raman intensity ratio as a function of twisting angle follows an
exponential profile matching the moir\'e period with two local maxima at
0{\deg} and 60{\deg} and a minimum at 30{\deg}. Using a series of
temperature-dependent Raman and photoluminescence (PL) measurements as well as
\textit{ab initio} calculations, the intensity ratio
$I_{B_{2g}}/I_{{E_{2g}}/{A_{1g}}}$ is explained as a signature of lattice
dynamics in tB WSe$_2$ moir\'e superlattices. By further exploring different
material combinations of twisted hetero-bilayers, the results are extended for
all kinds of Mo- and W-based TMDCs.
