Speech synthesis is the process of generating speech by a computer or machine. However, there are several other terms used for speech synthesis, such as text-to-speech (TTS), voice synthesis, and computer-generated speech. TTS involves converting text into natural-sounding audio output, whereas voice synthesis refers to the process of producing sound using electronic or digital technology. Computer-generated speech, on the other hand, refers to the use of a computer program to create and produce speech sounds. All these different terms refer to the same concept of creating spoken words using technology, providing accessibility and convenience for people who need it.