arXiv AI By Di Zhu, Zihan Chen, Zixuan Li

MuQ-Eval: An Open-Source Per-Sample Quality Metric for AI Music Generation Evaluation

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MuQ-Eval is an open‑source per‑sample quality metric for AI‑generated music that uses frozen MuQ‑310M features and a lightweight prediction head trained on the MusicEval dataset. The simplest model—attention‑pooled frozen features plus a two‑layer MLP—achieves high correlation with human judgments (system‑level SRCC = 0.957, utterance‑level SRCC = 0.838). The metric is real‑time on a single consumer GPU, outperforms existing open per‑sample metrics, and supports personalized evaluators via LoRA adaptation on as few as 150 clips.

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