Merlin by default requires installation of some basic tools e.g., SPTK, WORLD
bash tools/compile_tools.sh
When building a new voice, Merlin requires few other tools in order to build labels: e.g., speech tools, festival and festvox
bash tools/compile_other_speech_tools.sh
If you want to build state align labels, Merlin requires installation of HTK
bash tools/compile_htk.sh