DCASE task 2 UPDATE on development dataset

[Tomoya Nishida]

Hello,

We are writing to inform you about an update to DCASE 2026 Task 2, “Noise-aware Unsupervised Anomalous Sound Detection for Machine Condition Monitoring.”

Due to an issue with the data, we have updated the Toycar file in the development dataset. The revised file is available on the same Zenodo page: https://zenodo.org/records/19336329

The updated file is named “dev_Toycar_r2.zip.” If you have already downloaded the previous version (“dev_Toycar.zip”), we kindly ask that you download the updated file and use it instead.

Please note that no other files have been modified. We sincerely apologize for any inconvenience this may cause.

Tomoya Nishida

Hitachi, ltd.