  We present a study of wave processes in the sunspot region NOAA 12670 on 2017
August 10 observed by the Goode Solar Telescope in the TiO 7057 A and Ha 6563 A
spectral lines. To study the distribution of power oscillations and their
dynamics, we applied the pixelized wavelet filtering (PWF) technique. For the
first time, the spatial structure of oscillation sources as a footpoints of
fine magnetic tubes, anchored in the sunspot umbra was obtained. We found that
at the chromosphere level, emission variation is a combination of numerous
independent oscillations located in the sources with small angular size. Their
spatial shape varies from dots and cellular in the umbra to filaments in the
penumbra. Each narrow spectrum harmonic corresponds to its source, without
global correlation among themselves. There is weak background as low-frequency
oscillation sources are distributed on whole umbra. At the photosphere level we
found regions with co-phased broadband oscillations of the whole umbra. Their
spectrum includes the ~3-min harmonic, whose maximal value is localized in
umbral dots (UDs), and the low frequency part near the ~5-min period. It is
shown that the oscillation sources are displaced at different heights with
increasing angular size. We assume that the observed spatial distribution of
wave sources indicates the existence a slow subphotosphere resonator with a
vertical magnetic field in the umbra and wave cutoff frequency due to
inclination of the magnetic field line in the penumbra.
