Indexed Voice files courtesy of Jonathan Naylor, G4KLX's DMRGateway Project
(c) 2020 Licenced under GPLv3 (see DMRGateway) 

Voice files in directories also licenced under GPLv3 by various contributors - (c) 2021:

es_ES - Joaquin EA5GVK
fr_FR and pt_PT - Joao Lopes - HB3XPL