Description and Discussion on DCASE2020 Challenge Task2: Unsupervised Anomalous Sound Detection for Machine Condition Monitoring
This work addresses the problem of detecting unknown anomalous sounds in industrial machines for condition monitoring, but it is incremental as it builds on existing research by establishing a first benchmark.
The paper describes the DCASE 2020 Challenge Task 2, which tackled the problem of unsupervised anomalous sound detection for machine condition monitoring by creating a benchmark with a large-scale dataset, evaluation metrics, and a baseline system, resulting in 117 submissions from 40 teams and the development of novel approaches.
In this paper, we present the task description and discuss the results of the DCASE 2020 Challenge Task 2: Unsupervised Detection of Anomalous Sounds for Machine Condition Monitoring. The goal of anomalous sound detection (ASD) is to identify whether the sound emitted from a target machine is normal or anomalous. The main challenge of this task is to detect unknown anomalous sounds under the condition that only normal sound samples have been provided as training data. We have designed this challenge as the first benchmark of ASD research, which includes a large-scale dataset, evaluation metrics, and a simple baseline system. We received 117 submissions from 40 teams, and several novel approaches have been developed as a result of this challenge. On the basis of the analysis of the evaluation results, we discuss two new approaches and their problems.