Query by Tapping

Description

The main purpose of QBT (Query by Tapping) is to evaluate MIR system in retrieving ground-truth MIDI files by tapping the onset of music notes to the microphone. This task provides query files in wave format as well as the corresponding human-label onset time in symbolic format. For this year's QBT task, we have two corpora for evaluation:

• Roger Jang's MIR-QBT: This dataset contains both wav files (recorded via microphone) and onset files (human-labeled onset time).
• Show Hsiao's QBT_symbolic: This dataset contains only onset files (obtained from the user's tapping on keyboard).

Subtask 1: QBT with symbolic input

• Test database: About 150 ground-truth monophonic MIDI files in MIR-QBT.
• Query files: About 800 text files of onset time to retrieve target MIDIs in MIR_QBT. These onset files can help participant concentrate on similarity matching instead of onset detection. All onset files cannot guarantee to have perfect detection result from original wav query files.
• Evaluation: Return top 10 candidates for each query file. 1 point is scored for a hit in the top 10 and 0 is scored otherwise (Top-10 hit rate).

Subtask 2: QBT with wave input

• Test database: About 150 ground-truth monophonic MIDI files in MIR-QBT.
• Query files: About 800 wave files of tapping recordings to retrieve MIDIs in MIR-QBT.
• Evaluation: Return top 10 candidates for each query file. 1 point is scored for a hit in the top 10 and 0 is scored otherwise (Top-10 hit rate).

Participation in previous years

Year	Participating Algorithms	URL
2009	3	https://www.music-ir.org/mirex/wiki/2009:Query-by-Tapping_Results
2008	5	https://www.music-ir.org/mirex/wiki/2008:Query-by-Tapping_Results