Speech-to-Text (STT) is a speech processing application that converts spoken words and sentences into text. According to the procedure Speech-to-Text works with speech recognition and conversion of the recognized words into text files.
In speech recognition, speech is divided into phonemes or smallest distinguishing features. Complex algorithms form the words or phrases that the speaker said from the fragments. In further speech processing, a speech processor converts the words into text files that can be used in word processing.
Speech-to-text is used by the Androidoperating system and, among other things, in speech-controlled programming interfaces( SAPI). There are also stand-alone application programs for this speech function and as apps for smartphones. If, on the other hand, texts are converted into speech, this is called text-to-speech( TTS).