Show HN: PocketTTS-raven – fast local in-browser TTS with voice cloning (pantel.is)

A new project, PocketTTS-raven, has been released that enables fast local text-to-speech (TTS) with voice cloning capabilities, designed to operate entirely in-browser and leveraging native C++ and WebAssembly (WASM) technologies. This tool achieves impressive speed, processing text at up to 33.3 times real-time on a MacBook M4 Max, producing audible output in as little as 30 milliseconds, significantly faster than its predecessors. Users can create a cloned voice by uploading short audio samples, allowing for a personalized auditory experience. The significance of PocketTTS-raven lies in its potential to enhance real-time conversational AI applications, where low-latency speech is crucial for maintaining engagement and interaction quality. The project stems from ongoing efforts to develop a responsive AI "creature" that interacts seamlessly. Technical improvements include advanced optimizations like delta-KV caching and graph rewrites that allow for high-speed audio generation without sacrificing voice quality. Overall, this initiative represents a substantial leap in TTS technology, making it accessible for developers looking to integrate sophisticated voice functionalities into applications or games.