Voices Effects. Usage Select your voice. sans.resetprefix resets prefix to '. //VanillaVoice - Turn Text into Human-Sounding Speech Sam is a very small Text-To-Speech (TTS) program written in Javascript, Support via email or Contact Us is provided during office hours 9-17 CET. Information collected when you use the Service may include technical or diagnostic information related to your use that may be used by Acapela Group to maintain, improve and enhance the Service.