sudo dpkg -i gespeaker_0.8.6-1_all.deb

sudo dpkg -i gespeaker_0.8.6-1_all.deb
[sudo] password for dhwan:
Selecting previously unselected package gespeaker.
(Reading database ... 456848 files and directories currently installed.)
Preparing to unpack gespeaker_0.8.6-1_all.deb ...
Unpacking gespeaker (0.8.6-1) ...
dpkg: dependency problems prevent configuration of gespeaker:
 gespeaker depends on python-glade2; however:
  Package python-glade2 is not installed.
 gespeaker depends on python-gobject; however:
  Package python-gobject is not installed.
 gespeaker depends on python-xdg; however:
  Package python-xdg is not installed.

dpkg: error processing package gespeaker (--install):
 dependency problems - leaving unconfigured
Processing triggers for man-db (2.9.1-1) ...
Processing triggers for gnome-menus (3.36.0-1ubuntu1) ...
Processing triggers for bamfdaemon (0.5.3+18.04.20180207.2-0ubuntu2) ...
Rebuilding /usr/share/applications/bamf-2.index...
Processing triggers for desktop-file-utils (0.24-1ubuntu3) ...
Processing triggers for mime-support (3.64ubuntu1) ...
Errors were encountered while processing:
 gespeaker
dhwan@dhwan-Aspire-A514:/media/dhwan/DATA/Downloads$ sudo apt install -f
Reading package lists... Done
Building dependency tree       
Reading state information... Done
Correcting dependencies... Done
The following packages were automatically installed and are no longer required:
  ardour-data ardour-video-timeline carla-lv2 carla-vst dpf-plugins-common
  dpf-plugins-dssi dpf-plugins-ladspa dpf-plugins-lv2 dpf-plugins-vst
  gir1.2-gmenu-3.0 gir1.2-handy-0.0 gnome-shell-extension-prefs gnome-tweaks
  harvid libayatana-appindicator3-1 libayatana-indicator3-7 libgpaste11
  libhandy-0.0-0 libprojectm2v5 libqm-dsp0 libsmf0 libvamp-sdk2v5 libxdo3
  lsp-plugins-jack lsp-plugins-ladspa lsp-plugins-lv2 lsp-plugins-vst
  projectm-data python3-cffi python3-jack-client python3-ply python3-pycparser
  ubuntustudio-lowlatency-settings ubuntustudio-performance-tweaks
  vamp-plugin-sdk xdotool
Use 'sudo apt autoremove' to remove them.
The following packages will be REMOVED:
  gespeaker
0 upgraded, 0 newly installed, 1 to remove and 4 not upgraded.
1 not fully installed or removed.
After this operation, 668 kB disk space will be freed.
Do you want to continue? [Y/n] y
(Reading database ... 456944 files and directories currently installed.)
Removing gespeaker (0.8.6-1) ...
Processing triggers for desktop-file-utils (0.24-1ubuntu3) ...
Processing triggers for mime-support (3.64ubuntu1) ...
Processing triggers for gnome-menus (3.36.0-1ubuntu1) ...
Processing triggers for man-db (2.9.1-1) ...
Processing triggers for bamfdaemon (0.5.3+18.04.20180207.2-0ubuntu2) ...
Rebuilding /usr/share/applications/bamf-2.index...