AI Voice Changer vs Altered Real-Time Pro

AI Voice Changer is an open-source project for real-time voice conversion in streaming, gaming, content creation, and online communications. It supports Windows, macOS, and Linux, with a local web dashboard at localhost:8000 for switching models, adjusting audio settings, monitoring gain, and managing presets. Its conversion pipeline uses SoftVC, ContentVec, or HuBERT feature extraction with retrieval-based RVC models and pitch-guided conversion. Audio tools include noise suppression, voice activity detection, pitch correction, formant shifting, equalization, compression, and reverb. Virtual audio routing can connect output to OBS Studio, Discord, Zoom, Twitch, and other calling or streaming platforms. A FastAPI backend provides REST controls and real-time streaming over WebSockets. Custom voice training covers dataset preparation, pitch extraction, model training, and feature indexing; the training guide calls for at least 10 minutes of clean continuous speech. The README gives a 35–48 ms end-to-end delay target for specified hardware and supports CPU fallback, which can reach about 200 ms. It recommends a compatible NVIDIA GPU. The project describes imperceptible audio watermarks and instructs users to obtain documented consent before voice cloning, disclose AI voice synthesis, and avoid deceptive impersonation, fraud, and harassment.

Altered Real-Time Pro is a desktop virtual microphone that routes AI-processed speech into voice and video communication apps. It runs on Windows and macOS and works with apps that accept microphone input, including Zoom, Google Meet, Discord, Skype, WhatsApp, games, and call-centre software. Its four feature areas address different audio needs: Isolate suppresses noise and competing speakers, Voice Skins change vocal identity, Accent Translation alters accents, and Euphonia restores voices. Processing can run locally on the user's machine, with the product page saying voice data stays on the PC, or Cloud Compute can offload work to nearby servers in the US, EU, or India. Cloud Compute costs $2 per hour of daily quota per month. The free plan provides 20 minutes of processing per day; paid plans start at $5/mo. Accent-changing effects are designed around 135 ms algorithmic latency, while actual latency depends on the model, CPU, audio settings, and processing cores. Enterprise includes team controls and priority support.