the RAM was the problem. After I used a swap partition everything works fine.
found your nice voice assistant and tried to run it on a OrangePi with Armbian.
I cloned the github repo, used the build-debian.sh script and then the dev-setup.sh but there the compiling process stops with following error:
gcc: internal compiler error: Killed (program cc1)
Please submit a full bug report,
with preprocessed source if appropriate.
See <file:///usr/share/doc/gcc-5/README.Bugs> for instructions.
Makefile:3853: recipe for target 'lang/vid_gb_ap/libttsmimic_lang_vid_gb_ap_la-vid_gb_ap_cg_01_mcep_trees.lo' failed
make: *** [lang/vid_gb_ap/libttsmimic_lang_vid_gb_ap_la-vid_gb_ap_cg_01_mcep_trees.lo] Error 1
make: *** Waiting for unfinished jobs....
make: Leaving directory '/home/user/mycroft-core/mimic'
Makefile:4111: recipe for target 'all-recursive' failed
make: *** [all-recursive] Error 1
Somebody here who can point me in the right direction how I could run this without problems?