Patent · US Active

Segmentation-based feature extraction for acoustic scene classification

US11386916B2 · kind B2 · utility

1Cited by

0References

17Claims

0Family size

Assignee

Huawei Technologies Co., Ltd. · CN

Inventors

Milos Markovic · Velika Mostanica, RS
Florian Eyben · Gilching, DE
Andrea Crespi · Busto Arsizio, IT
Björn Schuller · Gilching, DE

Key dates

Filing date	May 4, 2020
Grant date	Jul 12, 2022
Priority date	—
Expiry date	May 26, 2040

Classification

Technology area (CPC G)Physics
CPC primaryG10L25/21
WIPO fieldComputer technology
WIPO sectorElectrical engineering

Abstract

An apparatus and a method for acoustic scene classification of a block of audio samples are provided. The block is partitioned into frames in the time domain. For each respective frame of a plurality of frames of the block, a change measure between the respective frame and a preceding frame of the block is calculated. The respective frame is assigned, based on the calculated change measure, to one of a set of short-event frames, a set of long-event frames, and a set of background frames. The feature vector is determined based on a feature computed from one or more of the set of short-event frames, the set of long-event frames, and the set of background frames.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.