公开(公告)号：US10679642B2

公开(公告)日：2020-06-09

申请号：US16013650

申请日：2018-06-20

Applicant: Huawei Technologies Co., Ltd. ,  UNIVERSITY OF CAMBRIDGE

Inventor： Milos Markovic ,  Karim Helwani ,  Herbert Buchner ,  Simon Godsill

IPC: G10L21/0308 ,  G10L21/0272 ,  G10L17/00 ,  G10L21/0216

Abstract: A signal processing apparatus and method are provided for separating a plurality of mixture signals from a MIMO system to iteratively obtain a plurality of output signals. The plurality of mixture signals are a response of the MIMO system to a plurality of source signals. The signal processing apparatus comprises a plurality of blind source separators including a first blind source separator based on a first blind source separation technique or algorithm and a second blind source separator based on a second blind source separation technique or algorithm, wherein the first blind source separator is configured to compute a first plurality of preliminary output signals on the basis of a first set of coefficients describing the MIMO system and wherein the second blind source separator is configured to compute a second plurality of preliminary output signals on the basis of a second set of coefficients describing the MIMO system.

公开(公告)号：US10665248B2

公开(公告)日：2020-05-26

申请号：US16297275

申请日：2019-03-08

Applicant: Huawei Technologies Co., Ltd.

Inventor： Milos Markovic ,  Jürgen Geiger

IPC: G10L21/0232 ,  G10L25/51 ,  G01H7/00 ,  G10L25/18 ,  G10L21/0208

Abstract: A device having an input that is configured to receive a sound signal captured from an acoustic environment where the device is located, is provided. The device also includes a signal processor that is configured to obtain a reverberation signature from the sound signal and classify the acoustic environment as being of a particular type in dependence on that reverberation signature. It also includes a controller configured to control an operation of the device in dependence on the classification of the acoustic environment. By using the reverberation signature to classify the environment, the device it is not dependent on a particular type of signal having to be present in the environment at the time when the sound signal is captured. The reverberation properties of the environment will be embodied by any sound signal captured from that environment.

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.