公开(公告)号：US08856012B2

公开(公告)日：2014-10-07

申请号：US14170733

申请日：2014-02-03

Applicant: SAMSUNG Electronics Co., Ltd.

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

IPC: G10L19/00 ,  G10L19/002 ,  G10L19/18

CPC classification number: G10L19/002 ,  G10L19/00 ,  G10L19/18

Abstract: A method of encoding an audio signal, where signals including two or more channel signals are downmixed to a mono signal, the mono signal is divided into a low-frequency signal and a high-frequency signal, the low-frequency signal is encoded through algebraic code excited linear prediction (ACELP) or transform coded excitation (TCX), and the high-frequency signal is encoded using the low-frequency signal. A method of decoding of an audio signal, a low-frequency signal encoded through ACELP or TCX is decoded, a high-frequency signal is decoded using the low-frequency signal, the low-frequency signal and the high-frequency signal are combined to generate a mono signal, and the mono signal is upmixed by decoding spatial parameters regarding signals including two or more channel signals.

Abstract translation: 一种编码音频信号的方法，其中包括两个或更多个信道信号的信号被下混合到单声道信号，单声道信号被分成低频信号和高频信号，低频信号通过代数 代码激励线性预测（ACELP）或变换编码激励（TCX），并且使用低频信号对高频信号进行编码。 解码音频信号的方法，通过ACELP或TCX编码的低频信号进行解码，使用低频信号对低频信号进行解码，将低频信号和高频信号合成为 产生单声道信号，并且单声道信号通过解码关于包括两个或更多个声道信号的信号的空间参数来混合。

公开(公告)号：US20140052455A1

公开(公告)日：2014-02-20

申请号：US14065073

申请日：2013-10-28

Applicant: Samsung Electronics Co., Ltd.

Inventor： Jung-hoe Kim ,  Eun-mi Oh

IPC: G10L19/00

CPC classification number: G10L19/008 ,  G10L19/00

Abstract: A method, medium, and apparatus encoding and/or decoding a multichannel audio signal. The method includes detecting the type of spatial extension data included in an encoding result of an audio signal, if the spatial extension data is data indicating a core audio object type related to a technique of encoding core audio data, detecting the core audio object type; decoding core audio data by using a decoding technique according to the detected core audio object type, if the spatial extension data is residual coding data, decoding the residual coding data by using the decoding technique according to the core audio object type, and up-mixing the decoded core audio data by using the decoded residual coding data. According to the method, the core audio data and residual coding data may be decoded by using an identical decoding technique, thereby reducing complexity at the decoding end.

Abstract translation: 一种编码和/或解码多声道音频信号的方法，介质和装置。 该方法包括：如果空间扩展数据是指示与核心音频数据的编码技术相关的核心音频对象类型的数据，检测核心音频对象类型，则检测包括在音频信号的编码结果中的空间扩展数据的类型; 通过使用根据所检测的核心音频对象类型的解码技术对核心音频数据进行解码，如果空间扩展数据是残差编码数据，则使用根据核心音频对象类型的解码技术对残差编码数据进行解码，以及上调 通过使用解码的残留编码数据来解码核心音频数据。 根据该方法，可以通过使用相同的解码技术来解码核心音频数据和残留编码数据，从而降低解码端的复杂度。

公开(公告)号：US08645126B2

公开(公告)日：2014-02-04

申请号：US13850398

申请日：2013-03-26

Applicant: Samsung Electronics Co., Ltd.

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

IPC: G10L19/02

CPC classification number: G10L19/002 ,  G10L19/00 ,  G10L19/18

Abstract: A method of encoding an audio signal, where signals including two or more channel signals are downmixed to a mono signal, the mono signal is divided into a low-frequency signal and a high-frequency signal, the low-frequency signal is encoded through algebraic code excited linear prediction (ACELP) or transform coded excitation (TCX), and the high-frequency signal is encoded using the low-frequency signal. A method of decoding of an audio signal, a low-frequency signal encoded through ACELP or TCX is decoded, a high-frequency signal is decoded using the low-frequency signal, the low-frequency signal and the high-frequency signal are combined to generate a mono signal, and the mono signal is upmixed by decoding spatial parameters regarding signals including two or more channel signals.

公开(公告)号：US11688406B2

公开(公告)日：2023-06-27

申请号：US17138106

申请日：2020-12-30

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Ki-hyun Choo ,  Eun-mi Oh

IPC: G10L19/002 ,  G10L21/038 ,  G10L19/02

CPC classification number: G10L19/002 ,  G10L19/02 ,  G10L19/0204 ,  G10L21/038

Abstract: A high-band encoding/decoding method and device for bandwidth extension are provided. A high-band encoding method comprising the steps of: generating sub band-specific bit allocation information on the basis of a low-band envelope; determining, on the basis of the sub band-specific bit allocation information, the sub band requiring an envelope update in a high band; and generating, for the determined sub band, refinement data relating to the envelope update. A high-band decoding method comprising the steps of: generating sub band-specific bit allocation information on the basis of a low-band envelope; determining, on the basis of the sub band-specific bit allocation information, the sub band requiring an envelope update in a high band; and decoding, for the determined sub band, refinement data relating to the envelope update, thereby updating the envelope.

公开(公告)号：US10803878B2

公开(公告)日：2020-10-13

申请号：US16538427

申请日：2019-08-12

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Ki-hyun Choo ,  Eun-mi Oh ,  Seon-ho Hwang

IPC: G10L19/12 ,  G10L21/038 ,  G10L19/18 ,  G10L19/012 ,  G10L19/16 ,  G10L19/08

Abstract: Disclosed are a method and an apparatus for high frequency decoding for bandwidth extension. The method for high frequency decoding for bandwidth extension comprises the steps of: decoding an excitation class; transforming a decoded low frequency spectrum on the basis of the excitation class; and generating a high frequency excitation spectrum on the basis of the transformed low frequency spectrum. The method and apparatus for high frequency decoding for bandwidth extension according to an embodiment can transform a restored low frequency spectrum and generate a high frequency excitation spectrum, thereby improving the restored sound quality without an excessive increase in complexity.

公开(公告)号：US10735484B2

公开(公告)日：2020-08-04

申请号：US15752152

申请日：2016-08-09

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Jong-hoon Jeong ,  Ki-hyun Choo ,  Eun-mi Oh ,  Sung-chan Kim ,  Cheol-hoon Baek

IPC: H04L29/06 ,  H04N21/439 ,  H04N19/00 ,  H04N21/485 ,  G10L19/22 ,  H04N19/103 ,  H04N19/164 ,  G10L19/16 ,  H04N21/233

Abstract: Provided are a transmission device for transmitting a data signal to a reception device and a method for controlling the same. The present method for controlling a transmission device comprises; receiving function module information related to a codec supported by a reception device from the reception device while pairing with the reception device is performed; encoding a data signal on the basis of the received function module information; and transmitting the encoded data signal to the reception device.

公开(公告)号：US20200178257A1

公开(公告)日：2020-06-04

申请号：US16783637

申请日：2020-02-06

Applicant: SAMSUNG ELECTRONICS CO., LTD.

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

IPC: H04W72/04 ,  H04W76/10 ,  H04W28/20 ,  H04W68/00 ,  H04L29/06 ,  H04W4/80 ,  H04M1/725

Abstract: Disclosed are a user terminal device and a control method therefor. The control method for a user terminal device comprises the steps of: determining state information of a satellite device connected with a user terminal device when a call request message is received from another terminal device; determining communication configuration information with the another terminal device on the basis of the state information of the satellite device, and transmitting a call response message including the communication configuration information to the another terminal device; and receiving audio data from the another terminal device according to a communication scheme corresponding to the communication configuration information. Therefore, in comparison with the prior art, the present invention can reduce a call negotiation time between user terminal devices, and thus reduce a call cost.

公开(公告)号：USRE47824E1

公开(公告)日：2020-01-21

申请号：US14883356

申请日：2015-10-14

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Ki-hyun Choo ,  Anton Porov ,  Eun-mi Oh ,  Jung-hoo Kim

IPC: G10L19/02 ,  G10L21/038

Abstract: Provided is a method and apparatus for encoding or decoding a signal corresponding to a high frequency band in an audio signal. The method and apparatus for encoding a high frequency band detects and encodes frequency component(s) according to a pre-set criterion from a signal corresponding to a frequency band higher than a pre-set frequency and encodes energy value(s) of a signal to reconstruct band(s) in which the detected frequency component(s) are included. The method and apparatus for decoding a high frequency band decodes the signal by adjusting a signal to reconstruct a band in which important frequency component(s) are included by considering an energy value of the important frequency component(s). Accordingly, even though encoding or decoding is performed using a small number of bits, there is no degradation in sound quality of a signal corresponding to a high frequency band, and thus coding efficiency can be maximized.

公开(公告)号：US10453466B2

公开(公告)日：2019-10-22

申请号：US16215079

申请日：2018-12-10

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Ki-hyun Choo ,  Eun-mi Oh ,  Ho-sang Sung

IPC: G10L19/12 ,  G10L19/24 ,  G10L19/038 ,  G10L21/038 ,  G10L19/00

Abstract: A method and apparatus for performing coding and decoding for high-frequency bandwidth extension. The coding apparatus may classify a coding mode of a low-frequency signal of an input signal based on characteristics of the low-frequency signal of an input signal, perform code excited linear prediction coding or audio coding on the LPC excitation signal of the low-frequency signal of an input signal, and perform time-domain (TD) extension coding or frequency-domain (FD) extension coding on a high-frequency signal of an input signal. When the FD extension coding is performed, the coding apparatus may generate a base excitation signal for a high band using an input spectrum, obtain an energy control factor of a sub-band in a frame using the base excitation signal and the input spectrum, generate an energy signal based on the input spectrum and the energy control factor, for the sub-band in the frame, and quantize the energy signal.

公开(公告)号：US10255928B2

公开(公告)日：2019-04-09

申请号：US15810636

申请日：2017-11-13

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

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.