公开(公告)号：US20210020184A1

公开(公告)日：2021-01-21

申请号：US17060888

申请日：2020-10-01

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Ho-sang SUNG

IPC: G10L19/02 ,  G10L19/032 ,  G10L19/035

Abstract: A spectrum encoding method includes selecting an important spectral component in band units for a normalized spectrum and encoding information of the selected important spectral component for a band, based on a number, a position, a magnitude and a sign thereof. A spectrum decoding method includes obtaining from a bitstream, information about an important spectral component for a band of an encoded spectrum and decoding the obtained information of the important spectral component, based on a number, a position, a magnitude and a sign of the important spectral component.

公开(公告)号：US20200090669A1

公开(公告)日：2020-03-19

申请号：US16688482

申请日：2019-11-19

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Ho-sang SUNG

IPC: G10L19/032 ,  G10L19/038

Abstract: A quantization apparatus comprises: a first quantization module for performing quantization without an inter-frame prediction; and a second quantization module for performing quantization with an inter-frame prediction, and the first quantization module comprises: a first quantization part for quantizing an input signal; and a third quantization part for quantizing a first quantization error signal, and the second quantization module comprises: a second quantization part for quantizing a prediction error; and a fourth quantization part for quantizing a second quantization error signal, and the first quantization part and the second quantization part comprise a trellis structured vector quantizer.

公开(公告)号：US20190189139A1

公开(公告)日：2019-06-20

申请号：US16282677

申请日：2019-02-22

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Ho-sang SUNG

IPC: G10L19/02 ,  G10L19/035

Abstract: A spectrum encoding method includes selecting an important spectral component in band units for a normalized spectrum and encoding information of the selected important spectral component for a band, based on a number, a position, a magnitude and a sign thereof. A spectrum decoding method includes obtaining from a bitstream, information about an important spectral component for a band of an encoded spectrum and decoding the obtained information of the important spectral component, based on a number, a position, a magnitude and a sign of the important spectral component.

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：US20190051311A1

公开(公告)日：2019-02-14

申请号：US16153189

申请日：2018-10-05

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Ho-sang SUNG ,  Nam-suk LEE

IPC: G10L19/005 ,  G10L19/12 ,  G10L19/025

Abstract: A frame error concealment (FEC) method is provided. The method includes: selecting an FEC mode based on states of a current frame and a previous frame of the current frame in a time domain signal generated after time-frequency inverse transform processing; and performing corresponding time domain error concealment processing on the current frame based on the selected FEC mode, wherein the current frame is an error frame or the current frame is a normal frame when the previous frame is an error frame.

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：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：US20170178649A1

公开(公告)日：2017-06-22

申请号：US15300173

申请日：2015-03-30

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Ho-sang SUNG

IPC: G10L19/032 ,  G10L19/038

Abstract: A quantization apparatus comprises: a first quantization module for performing quantization without an inter-frame prediction; and a second quantization module for performing quantization with an inter-frame prediction, and the first quantization module comprises: a first quantization part for quantizing an input signal; and a third quantization part for quantizing a first quantization error signal, and the second quantization module comprises: a second quantization part for quantizing a prediction error; and a fourth quantization part for quantizing a second quantization error signal, and the first quantization part and the second quantization part comprise a trellis structured vector quantizer.

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.