2026:Audio Downbeat Estimation Results

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Submissions

Submission Title PDF Authors
Baseline: CD4 QM Bar & Beat Tracker (beats per bar = 4) Link
Baseline: BeatThis Beat This! Accurate Beat Tracking Without DBN Postprocessing Link
CASM Context-Aware Semi-Markov Post-Processor for Beat and Downbeat Estimation PDF Zhanhong He, Hanyu Meng, Jiahao Zhao, Ganghui Ru, Yaolong Ju
infgon Multi-Scale Expert Reverification for Joint Beat and Downbeat Tracking PDF Tianle Yang

Test Sets

  • GTZAN: 993 excerpts of the GTZAN dataset with bar annotations (gtzan_tempo_beat, completed with GTZAN-Rhythm; 6 jazz excerpts without bar annotations are excluded).
  • osu2beat2025 (new in 2026): 703 full-length songs from ranked osu! beatmaps (anime, Vocaloid, game music and more) with metered beat annotations (Osu2MIR, ISMIR 2025 LBD); audio taken from public osu! mirrors and verified against the MD5 given with each annotation.
  • Yamaha_JPop: A private dataset annotated by Yamaha Corporation (250 JPOP songs).
  • Yamaha_Balanced: A private dataset annotated by Yamaha Corporation (239 songs). While it is still biased towards JPOP songs, the dataset covers a wider range of genres: J.Pop (10.37%), Rock (10.37%), J.Enka (10.37%), J.Kayoukyoku (10.37%), Soundtrack (10.37%), Western Pop (10.37%), Children's Song (10.37%), R&B (6.22%), Hiphop (4.56%), Jazz (2.49%), Dance (2.49%), World (2.07%), Techno (1.24%), Easy listening (1.24%), J.Minyou (1.24%), Others (5.81%).
  • JSIR: to be announced.

For each metric, the best result is shown in bold.

GTZAN

Group F-measure Precision Recall
CASM beatthis-casm (default) 77.24 77.43 79.51
CASM beatthis-direct 77.33 75.28 82.39
CASM beatthis-dbn55_215 76.56 78.35 76.66
CASM beatthis-dbn30_300 76.88 78.70 77.08
CASM mscnn-casm 70.95 69.42 75.27
CASM mscnn-direct 68.67 63.43 77.91
CASM mscnn-dbn55_215 71.56 73.42 71.46
CASM mscnn-dbn30_300 70.89 73.18 70.67
CASM tcn-casm 65.38 61.91 76.31
CASM tcn-direct 60.75 49.62 85.32
CASM tcn-dbn55_215 66.41 67.51 67.89
CASM tcn-dbn30_300 65.81 67.05 67.18
infgon 13.95 14.19 14.31
Baseline: CD4 46.36 46.43 47.95
Baseline: BeatThis 78.12 75.67 83.93

osu2beat2025

Group F-measure Precision Recall
CASM beatthis-casm (default) 81.99 87.64 78.48
CASM beatthis-direct 83.78 86.91 82.33
CASM beatthis-dbn55_215 82.19 89.97 77.56
CASM beatthis-dbn30_300 82.38 89.97 77.82
CASM mscnn-casm 71.86 73.57 71.81
CASM mscnn-direct 72.46 71.43 75.07
CASM mscnn-dbn55_215 71.01 81.18 65.74
CASM mscnn-dbn30_300 70.54 81.57 65.16
CASM tcn-casm 63.92 56.82 80.80
CASM tcn-direct 60.89 48.89 85.16
CASM tcn-dbn55_215 67.08 75.88 62.71
CASM tcn-dbn30_300 66.48 75.44 62.23
infgon 11.15 14.18 9.45
Baseline: CD4 44.01 48.77 41.75
Baseline: BeatThis 83.22 86.69 81.77

YAMAHA_Balanced

Group F-measure Precision Recall
CASM beatthis-casm (default)
CASM beatthis-direct
CASM beatthis-dbn55_215
CASM beatthis-dbn30_300
CASM mscnn-casm
CASM mscnn-direct
CASM mscnn-dbn55_215
CASM mscnn-dbn30_300
CASM tcn-casm
CASM tcn-direct
CASM tcn-dbn55_215
CASM tcn-dbn30_300
infgon
Baseline: CD4
Baseline: BeatThis

YAMAHA_JPop

Group F-measure Precision Recall
CASM beatthis-casm (default)
CASM beatthis-direct
CASM beatthis-dbn55_215
CASM beatthis-dbn30_300
CASM mscnn-casm
CASM mscnn-direct
CASM mscnn-dbn55_215
CASM mscnn-dbn30_300
CASM tcn-casm
CASM tcn-direct
CASM tcn-dbn55_215
CASM tcn-dbn30_300
infgon
Baseline: CD4
Baseline: BeatThis

JSIR

Group F-measure Precision Recall
CASM beatthis-casm (default)
CASM beatthis-direct
CASM beatthis-dbn55_215
CASM beatthis-dbn30_300
CASM mscnn-casm
CASM mscnn-direct
CASM mscnn-dbn55_215
CASM mscnn-dbn30_300
CASM tcn-casm
CASM tcn-direct
CASM tcn-dbn55_215
CASM tcn-dbn30_300
infgon
Baseline: CD4
Baseline: BeatThis