公开(公告)号：US11776532B2

公开(公告)日：2023-10-03

申请号：US17348129

申请日：2021-06-15

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Yesenia Lacouture Parodi ,  Florian Eyben ,  Andrea Crespi ,  Jun Deng

IPC: G10L15/16 ,  G06N3/04 ,  G10L25/30 ,  G10L25/51

CPC classification number: G10L15/16 ,  G06N3/04 ,  G10L25/30 ,  G10L25/51

Abstract: The disclosure relates to an audio processing apparatus (200) configured to classify an audio signal into one or more audio scene classes, the audio signal comprising a component signal. The apparatus (200) comprises: processing circuitry configured to classify the component signal of the audio signal as a foreground layer component signal or a background layer component signal; obtain an audio signal feature on the basis of the audio signal; select, depending on the classification of the component signal, a first set of weights or a second set of weights; and to classify the audio signal on the basis of the audio signal features, the foreground layer component signal or the background layer component signal and the selected set of weights.

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.