对比局部音符破坏与完整识别重播，揭示音轨生成中的条件传播机制。
Local Chord Corruption Is Not Recognizer Replay: Chord-Condition Propagation in MIDI-SAG
- 用固定生成器对比不同音符识别结果的重播效果，控制变量分析
- 四秒三全音段落导致输出变化最大，CENS目标差距在29/30条中为正
- 匹配重播能显著降低误差，适合评估实际部署中的条件传播
合成音符破坏为歌唱伴奏生成（SAG）提供可控压力测试，而完整的自动音符识别（ACR）重播则衡量部署系统接收到的实际条件。本文通过一个固定的MIDI-SAG生成器，重播CNN-CRF和DeepChroma+CRF的预测结果，保持曲目、种子、上下文和评分窗口不变。在30对曲目和三个种子下，中心四秒三全音段落引发的改变目标与内部输出效应大于CNN-CRF重播，在STFT、CQT和CENS中均显著；其中CENS目标差距在29/30条曲目上为正（平均0.462）。匹配重播支持与关系组合可减少该不匹配，联合匹配在完整30条分析中实现最低重播距离。相对根音替换造成的CENS全窗输出变化是同根音质量翻转的2.88倍，剂量相近。匹配替代品对两种识别路径的重播更接近。结论：局部破坏测试机制，完整重播评估部署条件传播。
原文摘要 · Abstract (English)
Synthetic chord corruption provides a controlled stress test for singing accompaniment generation (SAG), whereas complete automatic chord recognition (ACR) replay measures the condition delivered to a deployed system. We compare them by replaying CNN-CRF and DeepChroma+CRF predictions through one fixed MIDI-SAG generator, holding track, seed, context, and scoring window constant. Across 30 paired tracks and three seeds, a central four-second tritone produced larger changed-target and inside-output effects than CNN-CRF replay in STFT, CQT, and CENS; the CENS target gap was positive on 29/30 tracks (mean 0.462). Matching replay support and relation composition reduced this mismatch, with joint matching giving the lowest replay distance in the full-30 analysis. Relative-root substitutions produced 2.88-fold larger CENS full-window output change than same-root quality flips at near-equal dose. The matched surrogate was closer to replay for both recognizer paths. We conclude that localized corruption tests mechanisms, whereas complete replay evaluates deployed chord-condition propagation.
Thank you to arXiv for use of its open access interoperability. PaperDance 不是 arXiv 官方产品；中文卡片由大模型生成，请以原文为准。