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：US11238878B2

公开(公告)日：2022-02-01

申请号：US16700246

申请日：2019-12-02

Applicant: SAMSUNG ELECTRONICS CO., LTD. ,  INDUSTRY-UNIVERSITY COOPERATION FOUNDATION HANYANG UNIVERSITY ERICA CAMPUS

Inventor： Ho-sang Sung ,  Sang-won Kang ,  Jong-hyun Kim ,  Eun-mi Oh

IPC: G10L19/00 ,  G10L21/00 ,  G10L19/038 ,  G10L19/06 ,  G10L19/04 ,  G10L19/022

Abstract: A quantization device includes: a trellis-structured vector quantizer which quantizes a first error vector between an N-dimensional (here, “N” is two or more) subvector and a first predictive vector; and an inter-frame predictor which generates a first predictive vector from the quantized N-dimensional subvector, wherein the inter-frame predictor uses a predictive coefficient comprising an N×N matrix and performs an inter-frame prediction using the quantized N-dimensional subvector of a previous stage.

公开(公告)号：US11152015B2

公开(公告)日：2021-10-19

申请号：US16496935

申请日：2017-03-22

Applicant: Samsung Electronics Co., Ltd.

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

IPC: G10L21/0364 ,  G10K11/178 ,  G10L25/18 ,  G10L25/21

Abstract: A voice signal processing method includes acquiring a near-end noise signal and a near-end voice signal by using at least one microphone, acquiring a far-end voice signal according to an incoming call, determining a noise control parameter and a voice signal change parameter based on at least one of information about the near-end voice signal, information about the near-end noise signal, or information about the far-end voice signal, generating an anti-phase signal of the near-end noise signal based on the noise control parameter, changing the far-end voice signal to improve articulation of the far-end voice signal based on information related to at least one of the voice signal change parameter, the near-end noise signal, or the anti-phase signal, and outputting the anti-phase signal and the changed far-end voice signal.

公开(公告)号：US10811022B2

公开(公告)日：2020-10-20

申请号：US16657631

申请日：2019-10-18

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 decoding apparatus may include: a mode checking unit to check mode information of each of frames included in a bitstream; a first core decoding unit to perform code excited linear prediction (CELP) decoding on a CELP coded frame, when a core coding mode of a low-frequency signal indicates a CELP coding mode; a first extension decoding unit to generate a decoded signal of a high-frequency band by using at least one of a result of the performing the CELP decoding and an excitation signal of the low-frequency signal; a second core decoding unit to perform audio decoding on an audio coded frame, when the core coding mode indicates an audio coding mode; and a second extension decoding unit to generate a decoded signal of the high-frequency band by performing frequency-domain (FD) extension decoding.

公开(公告)号：US10720167B2

公开(公告)日：2020-07-21

申请号：US16363338

申请日：2019-03-25

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Ho-sang Sung ,  Eun-mi Oh

IPC: G10L19/005 ,  G10L19/012 ,  G10L19/022 ,  G10L19/02 ,  G10L25/21

Abstract: A method and an apparatus for packet loss concealment, and a decoding method and an apparatus employing same are provided. A method for time domain packet loss concealment includes checking whether a current frame is either an erased frame or a good frame after the erased frame, when the current frame is either the erased frame or the good frame after the erased frame, obtaining signal characteristics, selecting one of a phase matching tool and a smoothing tool based on a plurality of parameters including the signal characteristics, and performing a packet loss concealment processing on the current frame based on the selected tool.

公开(公告)号：US10652397B2

公开(公告)日：2020-05-12

申请号：US16339982

申请日：2016-10-07

Applicant: SAMSUNG ELECTRONICS CO., LTD.

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

IPC: H04M7/00 ,  G06K9/00 ,  G10L19/22 ,  G10L25/78 ,  H04N7/14 ,  H04M1/60 ,  H04M1/725

Abstract: Provided are a terminal device and method of performing a call function transmitting ambient audio with high sensitivity.A terminal device performing a call function with at least one external device via a network may include a receiver configured to receive at least one of an audio transmission signal and a video transmission signal to be transmitted to the external device; a processor configured to analyze at least one of the audio transmission signal and the video transmission signal, select one of a speech mode and an audio mode, based on a result of the analysis, and compress the audio transmission signal, based on the selected mode; a communicator configured to transmit the compressed audio transmission signal to the external device, and receive an audio reception signal from the external device; and an output unit configured to output the audio reception signal.

公开(公告)号：US20200051579A1

公开(公告)日：2020-02-13

申请号：US16657631

申请日：2019-10-18

Applicant: SAMSUNG ELECTRONICS CO., LTD.

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

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

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：US20190355367A1

公开(公告)日：2019-11-21

申请号：US16526430

申请日：2019-07-30

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Ki-hyun Choo ,  Eun-mi Oh

IPC: G10L19/00 ,  G10L19/032 ,  G10L21/00

Abstract: A lossless encoding method is provided that includes determining a lossless encoding mode of a quantization coefficient as one of an infinite-range lossless encoding mode and a finite-range lossless encoding mode; encoding the quantization coefficient in the infinite-range lossless encoding mode in correspondence with a result of the lossless encoding mode determination; and encoding the quantization coefficient in the finite-range lossless encoding mode in correspondence with a result of the lossless encoding mode determination.