To date, no Hellblade has been dubbed into another language. The audio is in English only, and localization takes place into more than 20 languages via text. In the final stretch of the visit, we visit the studio where Senua's head voices are recorded, with a demonstration of how the game's binaural audio is made - that is, it reaches the ears from different sides, to give a sensation that the Voices come from the left, right, back or front, always surrounding the player on all sides.
The demonstration was impressive. Under the command of audio director David Garcia , two actresses walked around the room, delivering sharp phrases into a microphone shaped like a human head. In the game, Senua's head voices take different postures. Some are aggressive towards her, others are suspicious or shy. According to Garcia, the process depends heavily on improvisation between him and the actresses — and this is the barrier to dubbing into other languages.
Spanish, from the city of Valencia, the audio director explained that improvisation is a two-way street: it gives naturalness to Senua's psychosis, making the voices sound alive and reactive, instead of scripted and robotic; However, this makes dubbing and mixing in other languages quite difficult, as binaural audio is an essential part of the experience. David Garcia stated that, if Ninja Theory decides to dub the games into other languages, they will have to do the dubbing in the studio in Cambridge, under his supervision, to guarantee the best possible result.