Method and system for detecting anomalous sound
US11978476B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 19, 2021 |
| Grant date | May 7, 2024 |
| Priority date | — |
| Expiry date | Oct 6, 2042 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG10L25/30
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A system and method for detecting anomalous sound are disclosed. The method includes receiving a spectrogram of an audio signal with elements defined by values in a time-frequency domain of the spectrogram. Each of the values corresponds to an element of the spectrogram that is identified by a coordinate in the time-frequency domain. The time-frequency domain of the spectrogram is partitioned into a context region and a target region. The context region and the target region are processed by a neural network using an attentive neural process to recover values of the spectrogram for elements with coordinates in the target region. The recovered values of the elements of the target region are compared with values of elements of the partitioned target region. An anomaly score is determined based on the comparison. The anomaly score is used for performing a control action.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.