Big and well-tagged databases are needed for many tasks in music information retrieval. Therefore we created the single note database (SNDB) containing over 30,000 single notes of 11 orchestra instruments by extracting and combining material of well-established databases. The ground truth was manually checked, corrected, and augmented. The result is a large and easy to handle database providing a reliable ground truth with a high variety for each class. Because of well-known original databases, new scientific results can be easily compared to earlier approaches. Here we show the benefit of the SNDB in a simple example. Moreover, we depict how the SNDB was created in the first place and how it can be conveniently reproduced from the original databases.
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