Dasheng-AudioGen

English | 中文

Dasheng-AudioGen is a unified audio generation model that can jointly synthesize intelligible speech, music, sound effects, and environmental acoustics from text descriptions.

Models

Model	HuggingFace	Text Encoder	Language
Dasheng-AudioGen	mispeech/Dasheng-AudioGen	google/flan-t5-large	English
Dasheng-AudioGen-Multilingual	mispeech/Dasheng-AudioGen-Multilingual	google/mt5-large	Multilingual

Installation

pip install torch torchaudio "transformers<5" einops

Tested with Python 3.10, torch 2.8.0+cu128, transformers 4.57. Not compatible with transformers 5.x.

Prompt Format

Dasheng-AudioGen uses structured tags to describe different audio aspects. A valid prompt must start with the <|caption|> tag, which provides the overall scene description. Other tags are optional and can be included as needed.

Tag	Description	Required
<|caption|>	Overall audio scene description	Yes
<|speech|>	Speaker identity and speaking style	No
<|asr|>	Spoken transcript / dialogue	No
<|sfx|>	Sound effects	No
<|music|>	Background music	No
<|env|>	Environmental ambience	No

Rules:

• The prompt must begin with <|caption|> — prompts without it will be rejected.
• Only include tags that are relevant; omit tags with no content (e.g., skip <|music|> if there is no music).

Multilingual note: When using the multilingual model, all descriptive tags (caption, speech, sfx, music, env) should be in English. Only the <|asr|> field (the actual speech content to synthesize) uses the target language.

Quick Start

Usage 1: Aspect-wise Composition

Pass each aspect as a named argument. The caption field is required; all other fields are optional.

import torchaudio
from transformers import AutoModel

model = AutoModel.from_pretrained("mispeech/Dasheng-AudioGen", trust_remote_code=True).cuda()

prompt = model.compose_prompt(
    caption="A gritty detective narrating over the sound of heavy rain and a melancholic solo jazz saxophone.",
    speech="gritty deep male voice",
    music="melancholic solo saxophone",
    env="distant urban ambience",
    sfx="heavy rain hitting pavement",
    asr="The city never sleeps, but it sure knows how to cry.",
)
audio = model.generate(prompt)
torchaudio.save("output.wav", audio.cpu(), 16000)

Usage 2: Pre-formatted Prompt String

Pass a complete tagged string via the prompt parameter. The string must start with <|caption|>.

import torchaudio
from transformers import AutoModel

model = AutoModel.from_pretrained("mispeech/Dasheng-AudioGen", trust_remote_code=True).cuda()

prompt = model.compose_prompt(
    prompt="<|caption|> A gritty detective narrating over the sound of heavy rain and a melancholic solo jazz saxophone. <|speech|> gritty deep male voice <|asr|> The city never sleeps, but it sure knows how to cry. <|sfx|> heavy rain hitting pavement <|music|> melancholic solo saxophone <|env|> distant urban ambience"
)
audio = model.generate(prompt)
torchaudio.save("output.wav", audio.cpu(), 16000)

Batch Inference

import torchaudio
from transformers import AutoModel

model = AutoModel.from_pretrained("mispeech/Dasheng-AudioGen", trust_remote_code=True).cuda()

prompts = [
    model.compose_prompt(caption="A cat meowing softly.", sfx="Soft cat meow."),
    model.compose_prompt(caption="Thunder rolling in the distance.", env="Stormy night ambience."),
    model.compose_prompt(caption="A piano playing a gentle melody.", music="Soft piano ballad."),
]
audios = model.generate(prompts)

for i, audio in enumerate(audios):
    torchaudio.save(f"output_{i}.wav", audio.unsqueeze(0).cpu(), 16000)

Generation Parameters

import torchaudio
from transformers import AutoModel

model = AutoModel.from_pretrained("mispeech/Dasheng-AudioGen", trust_remote_code=True).cuda()

prompt = model.compose_prompt(caption="A dog barking in a park")
audio = model.generate(
    prompts=prompt,
    num_steps=25,              # number of denoising steps (default: 25)
    guidance_scale=5.0,        # classifier-free guidance scale (default: 5.0)
    sway_sampling_coef=-1.0,   # sway sampling coefficient (default: -1.0, 0 for linear)
)
torchaudio.save("output.wav", audio.cpu(), 16000)

Acknowledgments

Dasheng-AudioGen was developed with contributions from XIAOMI LLM PLUS and SJTU X-LANCE.

Citation

@article{mei2026dashengaudiogen,
  title   = {Dasheng AudioGen: A Unified Model for Generating Coherent Audio Scenes from Text},
  author  = {Jiahao Mei and Heinrich Dinkel and Yadong Niu and Xingwei Sun and Gang Li and Yifan Liao and Jiahao Zhou and Junbo Zhang and Jian Luan and Mengyue Wu},
  journal = {arXiv preprint arXiv:2605.27838},
  year    = {2026}
}

License

This project is released under the Apache License 2.0.