In today's rapidly advancing technology, speech synthesis technology is also progressing, especially in the field of restoring lost voices. Recently, Google researchers introduced a new technology called 'Zero-shot Voice Transfer' which can be directly integrated with state-of-the-art Text-to-Speech (TTS) systems to help those who have lost their voices due to illness or accidents regain their 'voice memory'. The core of this technology is its 'zero-shot' capability, meaning that we do not need a large number of samples to achieve this.