Abstract
Existing single-domain and multi-task audio systems remain limited in directly organizing speech, music, sound effects, ambience, and multiple roles into long-form temporal scenes. We present Qwen-Audio-3.0-Gen-Preview, a unified non-autoregressive framework that uses a Diffusion Transformer (DiT) and a shared variational autoencoder (VAE) to generate the complete mixed waveform. Prompt enhancement converts free-form requests into structured temporal records that are rendered as textual conditions, while a two-stage data curriculum and semantic conditional views train the proposed model to use these conditions across domains. A shared continuous VAE compresses 48kHz stereo waveforms into 25Hz latent sequences and incorporates semantic supervision, providing one representation for speech, music, sound effects, and their mixtures. On Seed-TTS-Eval, speaker similarity is the proposed model's clearest strength across all three subsets, and on the multi-speaker benchmark, the proposed model shows higher cross-turn consistency than Seed-Audio-1.0 in both languages. On AudioCaps, its advantages are concentrated in evaluations using large audio-language models and AudioBox. Relative to Seed-Audio-1.0, it achieves stronger temporal localization. Using approximately 10% music data of a dedicated in-house model, the proposed model remains close across all seven SongBench components and leads in three while retaining speech and general-audio capabilities. These results demonstrate the potential of unified generation for temporally structured, multi-domain audio.