Conference Paper
Open Access
Improving Low-Latency Automatic Drum Transcription for Automotive Applications
2026 AES 6th International Automotive Audio Conference · Paper 8 · July 2026
Abstract
In automotive audio systems, musical beats and drum events can control synchronized in-cabin experiences such as ambient lighting and music-driven visual effects. Compared to beat tracking, automatic drum transcription (ADT)
offers richer control signals by detecting and classifying drum onsets of multiple drum classes (e.g., bass drum, snare drum, and hi-hat), enabling more precise and musically meaningful synchronization. Deploying ADT in vehicles, however, requires low latency, computational efficiency, and robust performance for various input signals. This paper investigates improvements to low-latency ADT suitable for automotive deployment, using the Separate- Tracks-Annotate-Resynthesize Drums (STAR Drums) dataset and a block-based processing strategy that achieves an average detection delay of around 60 ms. We explore three strategies: (1) lightweight architecture modifications inspired by recent advances in image classification, combined with a temporal convolutional network (TCN); (2) re-rendering STAR Drums to increase drum timbre diversity and augmenting the re-synthesized drum stems; and (3) refinement training with pseudo labels obtained from source-separated mixtures. Our results show that
data augmentation and increased drum timbre diversity yield modest performance gains, whereas pseudo-label refinement provides the largest effect, with up to 18% relative improvement in global F-measure. In the real-time
eight-class setting, our best model achieves a global F-measure of 0.77 on MDB Drums, competitive with state-ofthe- art offline systems, demonstrating that accurate and efficient ADT is feasible for automotive deployment.
