DiffSinger vs Revocalize AI

DiffSinger is a free, open-source singing voice synthesis system built around a shallow diffusion mechanism. The maintained version adapts generated audio to 44.1 kHz and incorporates updated acoustic models plus faster diffusion sampling methods. Variance models and parameters provide control over pitch, energy, breathiness, and other vocal characteristics. The linked MakeDiffSinger project supplies dataset-building pipelines, including recording-slicing and labeling tools. Its guide describes preprocessing data, training models, and running inference on DS files with variance or acoustic models. Installation requires Python 3.10 or later, with PyTorch 2.4.0 or later recommended. ONNX is the deployment format. The repository links OpenUtau and DiffScope as production or deployment projects; DiffScope is an editor powered by DiffSinger and remains under development. Users prepare their own data and assets. The project prohibits generating another person’s voice without consent and includes a utility for removing speaker embeddings from checkpoints before distribution. Support channels include tutorials, GitHub issues and discussions, QQ, and Discord.

Revocalize AI creates AI voices and trains custom voice models using voice-synthesizing technology. Its voice-conversion service captures a voice's harmonics and transforms an input voice into another. Listed tools include voice beautification and transformation, emotion, language versatility, real-time auto-pitch, vocal variations, and pitch, volume, and speed controls. Music creators can use the VST plugin for voice transformation, beautification, and harmonizing; compatible hosts named on the site include Logic Pro, Ableton, and FL Studio. Beta API documentation describes voice-to-voice conversion, text-to-singing, and speech, with access beginning by creating an account and API key. The site names sound engineers and producers, labels and publishers, artists and creators, and music enthusiasts and fans as use cases. Its Free plan includes 5 conversion minutes per month and one Starter AI voice. Starter costs $9 a month for 120 minutes and two Ultimate AI voices; Creator costs $39 a month for 300 minutes and five Ultimate AI voices. The VST plugin is listed for a 49.00 USD one-time payment. Exports include MP3 and WAV. Users are responsible for their uploaded or created content and may not create content that infringes others' rights.