公开(公告)号：US20210118451A1

公开(公告)日：2021-04-22

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 ,  G10L19/02 ,  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：US20210090581A1

公开(公告)日：2021-03-25

申请号：US17111893

申请日：2020-12-04

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.

公开(公告)号：US20190115037A1

公开(公告)日：2019-04-18

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 ,  G10L21/038 ,  G10L19/038

Abstract: A method and apparatus for performing coding and decoding for high-frequency bandwidth extension. The coding apparatus may down-sample an input signal, perform core coding on the down-sampled input signal, perform frequency transformation on the input signal, and perform bandwidth extension coding by using a base signal of the input signal in a frequency domain.

公开(公告)号：US20190019524A1

公开(公告)日：2019-01-17

申请号：US16126369

申请日：2018-09-10

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Ho-sang SUNG ,  Eun-mi OH

IPC: G10L19/032 ,  G10L19/12 ,  G10L25/15 ,  G10L19/06 ,  G10L19/07 ,  G10L19/00

Abstract: A weighting function determination method includes obtaining a line spectral frequency (LSF) coefficient or an immitance spectral frequency (ISF) coefficient from a linear predictive coding (LPC) coefficient of an input signal and determining a weighting function by combining a first weighting function based on spectral analysis information and a second weighting function based on position information of the LSF coefficient or the ISF coefficient.

公开(公告)号：US20180139564A1

公开(公告)日：2018-05-17

申请号：US15851832

申请日：2017-12-22

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Dong-hyun LIM ,  Yoon-jae LEE ,  Hae-kwang PARK ,  Seung-kwan YOO ,  Eun-mi OH ,  Jae-youn CHO

IPC: H04S7/00 ,  H04R5/02 ,  H04R3/04

CPC classification number: H04S7/303 ,  H04R3/04 ,  H04R5/02 ,  H04R2205/024 ,  H04R2420/07 ,  H04R2430/03 ,  H04S7/307 ,  H04S2400/13

Abstract: A method of processing an audio signal is provided. The method includes acquiring location information and performance information of a speaker configured to output an audio signal, selecting a frequency band based on the location information, determining a section to be strengthened from the selected frequency band with respect to the audio signal based on the performance information, and applying a gain value to the determined section.

公开(公告)号：US20180068674A1

公开(公告)日：2018-03-08

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: G10L21/038 ,  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：US20170256266A1

公开(公告)日：2017-09-07

申请号：US15500264

申请日：2015-07-28

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Ho-sang SUNG ,  Eun-mi OH

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

CPC classification number: G10L19/005 ,  G10L19/012 ,  G10L19/0204 ,  G10L19/022 ,  G10L25/21

Abstract: A method and an apparatus for packet loss concealment, and a decoding method and an apparatus employing same are disclosed. 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：US20170162207A1

公开(公告)日：2017-06-08

申请号：US15425418

申请日：2017-02-06

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Eun-mi OH ,  Anton POROV ,  Jung-hoe KIM

IPC: G10L19/028 ,  G10L19/02

CPC classification number: G10L19/028 ,  G10K11/002 ,  G10L19/0204

Abstract: Provided is a method and apparatus for encoding/decoding an audio signal. Sections which are not used to output noise components near important spectral components and sub-bands which are not used to output noise components, are determined to be encoded or decoded, so that the efficiency of encoding and decoding an audio signal increases, and sound quality can be improved using less bits.

公开(公告)号：US20170154632A1

公开(公告)日：2017-06-01

申请号：US15309334

申请日：2015-05-07

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: G10L19/038 ,  G10L19/022 ,  G10L19/06

CPC classification number: G10L19/038 ,  G10L19/022 ,  G10L19/04 ,  G10L19/06

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：US20160336018A1

公开(公告)日：2016-11-17

申请号：US15112006

申请日：2015-01-15

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Ho-sang SUNG ,  Eun-mi OH

IPC: G10L19/032 ,  G10L25/15 ,  G10L19/12 ,  G10L19/06

CPC classification number: G10L19/032 ,  G10L19/06 ,  G10L19/07 ,  G10L19/12 ,  G10L25/15 ,  G10L2019/0016

Abstract: A weighting function determination method includes obtaining a line spectral frequency (LSF) coefficient or an immitance spectral frequency (ISF) coefficient from a linear predictive coding (LPC) coefficient of an input signal and determining a weighting function by combining a first weighting function based on spectral analysis information and a second weighting function based on position information of the LSF coefficient or the ISF coefficient.

Abstract translation: 一种加权函数确定方法包括从输入信号的线性预测编码（LPC）系数获得线谱频率（LSF）系数或亚频谱频率（ISF）系数，并通过组合基于 频谱分析信息和基于LSF系数或ISF系数的位置信息的第二加权函数。