STT is an abbreviation for the phrase "Speech-to-Text," which refers to the process of converting spoken words into written text. There are several synonyms that can be used interchangeably with STT, including Voice Recognition, Speech Recognition, and Audio-to-Text. Voice Recognition is a technology that processes audio information and identifies the words being spoken by matching them with a database of previously recorded voices. Speech Recognition is a software technology that recognizes the spoken words and phrases and converts them into text. Finally, Audio-to-Text is a more general term that covers any process that translates audio information, including music and sound effects, into text.