All vocal noises were prohibited for 20 years, after which the voice (and eventually intelligible speech) would gradually reappear — controlled by the actor and used only when it was necessary and not because of laziness or lack of invention.
Svi vokalni zvuci su zabranjeni na 20 godina, nakon čega bi se glas (i eventualno razumljiv govor) postepeno ponovo javio i koristio samo kada je to bilo potrebno, a ne zbog lenjosti ili nedostatka pronalaska.