This condition is the same as in DCASE 2021 Task 2. For example, the operation speed of a conveyor can change due to seasonal demand, or environmental noise can fluctuate depending on the states of surrounding machines.

In real-world cases, operational conditions of machines or environmental noise often differ between the training and testing phases. This condition is the same as in DCASE 2020 Task 2 and DCASE 2021 Task 2.įactors other than anomalies change the acoustic characteristics between training and test data (i.e., domain shift). Therefore, exhaustive patterns of anomalous sounds are impossible to create or collect and unknown anomalous sounds that were not observed in the given training data must be detected. In real-world factories, anomalies rarely occur and are highly diverse. Only normal sound clips are provided as training data (i.e., unsupervised learning scenario).

The task this year is to detect anomalous sounds under three main conditions: This task is the follow-up to DCASE 2020 Task 2 and DCASE 2021 Task 2.

Audio repeater download 1.28