  We study the emission spectrum and absorption spectrum of a quantum emitter
when it is driven by various pulse sequences. We consider the Uhrig sequence of
$\pi_x$ pulses, the periodic sequence of $\pi_x\pi_y$ pulses and the periodic
sequence of $\pi_z$ pulses (phase kicks). We find that, similar to the periodic
sequence of $\pi_x$ pulses, the Uhrig sequence of $\pi_x$ pulses has emission
and absorption that are, with small variations, analogous to those of the
resonance fluorescence spectrum. In addition, while the periodic sequence of
$\pi_z$ pulses produces a spectrum that is dependent on the detuning between
the emitter and the pulse carrier frequency, the Uhrig sequence of
nonequidistant $\pi_x$ pulses and the periodic sequence of $\pi_x\pi_y$ pulses
have spectra with little dependence on the detuning as long as it stays
moderate along with the number of pulses. This implies that they can also,
similar to previously studied periodic sequence of $\pi_x$ pulses, be used to
tune the emission or absorption of quantum emitters to specific frequencies, to
mitigate inhomogeneous broadening and to enhance the production of
indistinguishable photons from emitters the solid state.
