公开(公告)号：US09818429B2

公开(公告)日：2017-11-14

申请号：US14879853

申请日：2015-10-09

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Ki-hyun Choo ,  Eun-mi Oh ,  Ho-sang Sung ,  Jung-Hoe Kim ,  Mi-young Kim

IPC: G10L19/00 ,  G10L21/038 ,  G10L19/028 ,  G10L19/02

CPC classification number: G10L21/038 ,  G10L19/0204 ,  G10L19/028

Abstract: A method and apparatus to encoding or decoding an audio signal is provided. In the method and apparatus, a noise-floor level to use in encoding or decoding a high frequency signal is updated according to the degree of a voiced or unvoiced sound included in the signal.

公开(公告)号：US09761238B2

公开(公告)日：2017-09-12

申请号：US15137030

申请日：2016-04-25

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Ki-hyun Choo

IPC: G10L21/038 ,  G10L19/08 ,  G10L19/20 ,  G10L19/18 ,  G10L19/22 ,  G10L21/0388 ,  G10L19/008 ,  G10L19/02

CPC classification number: G10L19/20 ,  G10L19/008 ,  G10L19/02 ,  G10L19/08 ,  G10L19/18 ,  G10L19/22 ,  G10L21/038 ,  G10L21/0388

Abstract: Disclosed are a method and apparatus for encoding and decoding a high frequency for bandwidth extension. The method includes: estimating a weight; and generating a high frequency excitation signal by applying the weight between random noise and a decoded low frequency spectrum.

公开(公告)号：US09734843B2

公开(公告)日：2017-08-15

申请号：US15142949

申请日：2016-04-29

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Ki-hyun Choo

IPC: G10L19/02 ,  G10L21/038 ,  G10L19/032 ,  G10L19/12

CPC classification number: G10L21/038 ,  G10L19/032 ,  G10L19/12

Abstract: An apparatus for generating a bandwidth extended signal includes an anti-sparseness processing unit to perform anti-sparseness processing on a low-frequency spectrum; and a frequency domain high-frequency extension decoding unit to perform high-frequency extension encoding in the frequency domain on the low-frequency spectrum on which the anti-sparseness processing is performed.

公开(公告)号：US09508353B2

公开(公告)日：2016-11-29

申请号：US14091637

申请日：2013-11-27

Applicant: SAMSUNG Electronics Co., Ltd.

Inventor： Ki-hyun Choo ,  Eun-mi Oh ,  Jung-hoe Kim ,  Boris Kudryashov ,  Sergey Petrov

IPC: G10L19/008 ,  H04H20/88 ,  H04H20/89 ,  H04S3/00

CPC classification number: G10L19/008 ,  H04H20/88 ,  H04H20/89 ,  H04S3/00 ,  H04S2420/03

Abstract: Provided are a method and apparatus for encoding and decoding a stereo signal or a multi-channel signal. According to the method and apparatus, a stereo signal or a multi-channel signal can be encoded and/or decoded by generating parameters based on a mono signal.

Abstract translation: 提供了一种用于对立体声信号或多声道信号进行编码和解码的方法和装置。 根据该方法和装置，可以通过基于单声道信号产生参数来对立体声信号或多声道信号进行编码和/或解码。

公开(公告)号：US09378746B2

公开(公告)日：2016-06-28

申请号：US13848177

申请日：2013-03-21

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Ki-hyun Choo

IPC: G10L19/00 ,  G10L19/20 ,  G10L19/02 ,  G10L21/038 ,  G10L19/008 ,  G10L21/0388

CPC classification number: G10L19/20 ,  G10L19/008 ,  G10L19/02 ,  G10L19/08 ,  G10L19/18 ,  G10L19/22 ,  G10L21/038 ,  G10L21/0388

Abstract: Disclosed are a method and apparatus for encoding and decoding a high frequency for bandwidth extension. The method includes: estimating a weight; and generating a high frequency excitation signal by applying the weight between random noise and a decoded low frequency spectrum.

Abstract translation: 公开了用于对带宽扩展的高频进行编码和解码的方法和装置。 该方法包括：估计体重; 以及通过在随机噪声和解码的低频谱之间施加权重来产生高频激励信号。

公开(公告)号：US09177569B2

公开(公告)日：2015-11-03

申请号：US13684879

申请日：2012-11-26

Applicant: Samsung Electronics Co., Ltd.

Inventor： Ki-hyun Choo ,  Eun-mi Oh ,  Ho-sang Sung ,  Jung-hoe Kim ,  Mi-young Kim

IPC: G10L21/00 ,  G10L21/038 ,  G10L19/028 ,  G10L19/02

CPC classification number: G10L21/038 ,  G10L19/0204 ,  G10L19/028

Abstract: A method and apparatus to encoding or decoding an audio signal is provided. In the method and apparatus, a noise-floor level to use in encoding or decoding a high frequency signal is updated according to the degree of a voiced or unvoiced sound included in the signal.

Abstract translation: 提供了一种对音频信号进行编码或解码的方法和装置。 在该方法和装置中，根据信号中包含的有声或无声音的程度来更新用于对高频信号进行编码或解码的噪声底层电平。

公开(公告)号：US11545162B2

公开(公告)日：2023-01-03

申请号：US16652759

申请日：2017-10-24

Applicant: Samsung Electronics Co., Ltd.

Inventor： Ho-sang Sung ,  Jong-hoon Jeong ,  Ki-hyun Choo ,  Eun-mi Oh ,  Jong-youb Ryu

IPC: G10L19/02 ,  G06N20/00 ,  G06K9/62 ,  G06N3/08 ,  G10L19/00 ,  G06F3/16

Abstract: Provided are an audio reconstruction method and device for providing improved sound quality by reconstructing a decoding parameter or an audio signal obtained from a bitstream, by using machine learning. The audio reconstruction method includes obtaining a plurality of decoding parameters of a current frame by decoding a bitstream, determining characteristics of a second parameter included in the plurality of decoding parameters and associated with a first parameter, based on the first parameter included in the plurality of decoding parameters, obtaining a reconstructed second parameter by applying a machine learning model to at least one of the plurality of decoding parameters, the second parameter, and the characteristics of the second parameter, and decoding an audio signal, based on the reconstructed second parameter.

公开(公告)号：US11380338B2

公开(公告)日：2022-07-05

申请号：US17037128

申请日：2020-09-29

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Ho-sang Sung ,  Holly Francois ,  Ki-hyun Choo ,  Eun-mi Oh ,  Kyung-hun Jung ,  Yaodu Wei

IPC: G10L19/028 ,  G10L19/22 ,  G10L21/0208 ,  G10L19/26 ,  G10L21/038 ,  G10L19/00 ,  H04M3/22

Abstract: Provided are a signal processing method and apparatus for enhancing sound quality. The signal processing method performed by a signal transmitting apparatus includes determining, based on a plurality of parameters, a valid bandwidth so as to encode an input signal; performing pre-processing on the input signal, based on the valid bandwidth; and encoding the pre-processed input signal, based on the valid bandwidth, and the signal processing method performed by a signal receiving apparatus includes decoding a bitstream or a packet received via a transmission channel; determining a valid bandwidth, based on a plurality of parameters used in the decoding; and performing post-processing on a decoded signal, based on the valid bandwidth.

公开(公告)号：US11037581B2

公开(公告)日：2021-06-15

申请号：US16312827

申请日：2017-06-26

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Ki-hyun Choo ,  Holly Francois ,  Eun-mi Oh ,  Chang-yeong Kim ,  Ho-sang Sung ,  Kyung-hun Jung

IPC: G10L21/00 ,  G10L21/0232 ,  G10L15/20 ,  G10L21/0364

Abstract: Provided is a method for processing a signal adaptively to a noisy environment, the method including: determining a class related to enhancement of intelligibility, based on a noise spectrum of a reception side or a near-end device and a received voice spectrum; generating guide information for the enhancement of intelligibility based on the noise spectrum, the voice spectrum, and the determined class; and generating a changed voice spectrum by applying the guide information to the voice spectrum.

公开(公告)号：US10972854B2

公开(公告)日：2021-04-06

申请号：US16343606

申请日：2017-03-07

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Kyung-hun Jung ,  Byeong-hoon Kwak ,  Ho-sang Sung ,  Eun-mi Oh ,  Jong-hoon Jeong ,  Ki-hyun Choo ,  Betlehem Terence

IPC: H04S7/00 ,  G06F3/16 ,  H04N7/14 ,  H04R1/40 ,  H04R3/00 ,  H04S3/00

Abstract: Provided are a method and an apparatus for increasing call quality while reducing consumption of bit rates in immersive multimedia communication. A method of transmitting, by a terminal device, an audio signal to a counterpart terminal device, includes: extracting head tracking information of a user of the counterpart terminal device from a packet received from the counterpart terminal device; predicting a head direction of the user of the counterpart terminal device after a predetermined time period, based on the extracted head tracking information; generating audio output signals by combining audio input signals received via a plurality of microphones, based on the predicted head direction; and transmitting information about the predicted head direction and a sound frame in which the audio output signals are compressed, to the counterpart terminal device.