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Xuenan Xu

16 accepted papers

2026

SciTS: Scientific Time Series Understanding and Generation with LLMs

ICLR 2026poster

The scientific reasoning ability of large language models (LLMs) has recently attracted significant attention. Time series, as a fundamental modality in scientific data, presents unique challenges that are often overlooked in current multimodal LLMs, which either encode numerical sequences as text o…

Cited by 0SourceScholar
2025

DRCap: Decoding CLAP Latents with Retrieval-Augmented Generation for Zero-shot Audio Captioning

ICASSP 2025accepted

While automated audio captioning (AAC) has made notable progress, traditional fully supervised AAC models still face two critical challenges: the need for expensive audio-text pair data for training and performance degradation when transferring across domains. To overcome these limitations, we prese…

Cited by 0SourceScholar
2025

PicoAudio: Enabling Precise Temporal Controllability in Text-to-Audio Generation

ICASSP 2025accepted

Recently, audio generation tasks have attracted considerable research interests. Despite rapid advancements in generating high-fidelity audio that is coarsely aligned with the text description, precise temporal controllability is still a challenge, which is essential to integrate audio generation wi…

Cited by 0SourceScholar
2025

SLAM-AAC: Enhancing Audio Captioning with Paraphrasing Augmentation and CLAP-Refine through LLMs

ICASSP 2025accepted

Automated Audio Captioning (AAC) aims to generate natural textual descriptions for input audio signals. Recent progress in audio pre-trained models and large language models (LLMs) has significantly enhanced audio understanding and textual reasoning capabilities, making improvements in AAC possible.…

Cited by 0SourceScholar
2025

Smooth-Foley: Creating Continuous Sound for Video-to-Audio Generation Under Semantic Guidance

ICASSP 2025accepted

The video-to-audio (V2A) generation task has drawn attention in the field of multimedia due to the practicality in producing Foley sound. Semantic and temporal conditions are fed to the generation model to indicate sound events and temporal occurrence. Recent studies on synthesizing immersive and sy…

Cited by 0SourceScholar
2024

A Detailed Audio-Text Data Simulation Pipeline Using Single-Event Sounds

ICASSP 2024accepted

Recently, there has been an increasing focus on audio-text cross-modal learning. However, most of the existing audio-text datasets contain only simple descriptions of sound events. Compared with classification labels, the advantages of such descriptions are significantly limited. In this paper, we f…

Cited by 0SourceScholar
2022

Can Audio Captions Be Evaluated With Image Caption Metrics?

ICASSP 2022accepted

Automated audio captioning aims at generating textual descriptions for an audio clip. To evaluate the quality of generated audio captions, previous works directly adopt image captioning metrics like SPICE and CIDEr, without justifying their suitability in this new domain, which may mislead the devel…

Cited by 0SourceScholar
2022

Category-Adapted Sound Event Enhancement with Weakly Labeled Data

ICASSP 2022accepted

Previous audio enhancement training usually requires clean signals with additive noises; hence commonly focuses on speech enhancement, where clean speech is easy to access. This paper goes beyond a broader sound event enhancement by using a weakly supervised approach via sound event detection (SED)…

Cited by 0SourceScholar
2021

Investigating Local and Global Information for Automated Audio Captioning with Transfer Learning

ICASSP 2021accepted

Automated audio captioning (AAC) aims at generating summarizing descriptions for audio clips. Multitudinous concepts are described in an audio caption, ranging from local information such as sound events to global information like acoustic scenery. Currently, the mainstream paradigm for AAC is the e…

Cited by 0SourceScholar
2021

Text-to-Audio Grounding: Building Correspondence Between Captions and Sound Events

ICASSP 2021accepted

Automated Audio Captioning is a cross-modal task, generating natural language descriptions to summarize the audio clips’ sound events. However, grounding the actual sound events in the given audio based on its corresponding caption has not been investigated. This paper contributes an Audio-Grounding…

Cited by 0SourceScholar