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Step-Audio-EditX Technical Report

Published: November 5, 2025 | arXiv ID: 2511.03601v2

By: Chao Yan , Boyong Wu , Peng Yang and more

Potential Business Impact:

Changes voice to sound happy or sad.

Business Areas:
Text Analytics Data and Analytics, Software

We present Step-Audio-EditX, the first open-source LLM-based audio model excelling at expressive and iterative audio editing encompassing emotion, speaking style, and paralinguistics alongside robust zero-shot text-to-speech (TTS) capabilities. Our core innovation lies in leveraging only large-margin synthetic data, which circumvents the need for embedding-based priors or auxiliary modules. This large-margin learning approach enables both iterative control and high expressivity across voices, and represents a fundamental pivot from the conventional focus on representation-level disentanglement. Evaluation results demonstrate that Step-Audio-EditX surpasses both MiniMax-2.6-hd and Doubao-Seed-TTS-2.0 in emotion editing and other fine-grained control tasks.

Repos / Data Links

Page Count
13 pages

Category
Computer Science:
Computation and Language