Evaluation of text-to-speech synthesizer for Indonesian language using semantically unpredictable sentences test: IndoTTS, eSpeak, and google translate TTS

A text-to-speech (TTS) synthesizer aims to produce speech from the corresponding text input. For Indonesian language, IndoTTS, eSpeak, and text-to-speech on Google Translate are available and widely used among the Indonesian. In this study, we evaluated those systems and conducted semantically unpredictable sentences (SUS) test. SUS test results showed that the intelligibility of those systems needs further improvement.