Artificial intelligence company Cartesia recently launched a voice conversion model called "Voice Changer". Unlike traditional voice conversion, this model not only transforms the input voice into the target voice but also preserves prosodic features such as intonation and stress from the original voice. According to Cartesia's official sources, users can try this feature on the website play.cartesia.ai. The company has also released related API documentation, which developers can access through docs.cartesia.ai.