公开(公告)号：US11386916B2

公开(公告)日：2022-07-12

申请号：US16866183

申请日：2020-05-04

Applicant: Huawei Technologies Co., Ltd.

Inventor： Milos Markovic ,  Florian Eyben ,  Andrea Crespi ,  Björn Schuller

IPC: G10L25/51 ,  G10L25/18 ,  G10L25/21

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.