Evaluator Sound

Evaluator Sound is a mobile and web app that helps musicians practice more effectively by listening to their playing. It uses spectrogram analysis and multi-modal transformers to tell correct from incorrect playing, detecting extra, missed, and wrong notes, and returns an annotated score to help the player review detected errors.

The error-detection models compare performance audio with a reference: Polytune (AAAI 2025) uses reference audio, while LadderSym (ICLR 2026) also uses a symbolic score. They produce note-level annotations identifying correct, missed, and extra notes.

Publications

LadderSym: A Multimodal Interleaved Transformer for Music Practice Error Detection, ICLR 2026.

Detecting Music Performance Errors with Transformers, AAAI 2025.