公开(公告)号：US11676614B2

公开(公告)日：2023-06-13

申请号：US17030104

申请日：2020-09-23

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

CPC classification number: G10L19/12 ,  G10L19/012 ,  G10L19/167 ,  G10L19/18 ,  G10L21/038 ,  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：US20220130403A1

公开(公告)日：2022-04-28

申请号：US17571597

申请日：2022-01-10

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 ,  G10L19/06 ,  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：US11259304B2

公开(公告)日：2022-02-22

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 ,  H04L69/24 ,  H04W4/80 ,  H04M1/72412 ,  H04W88/04 ,  H04M1/60 ,  H04W88/18

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：US10957340B2

公开(公告)日：2021-03-23

申请号：US16492911

申请日：2017-03-10

Applicant: Samsung Electronics Co., Ltd.

Inventor： Ho-sang Sung ,  Eun-mi Oh ,  Holly Francois

IPC: G10L25/00 ,  G10L25/60 ,  G10L21/0208 ,  G10L25/03 ,  G10L25/78 ,  H04M3/22

Abstract: A voice signal processing method according to an embodiment of the present disclosure for overcoming the problem includes: acquiring a real-time near-end noise signal; acquiring a far-end voice signal according to an incoming call; measuring subjective speech quality and perceptual-objective speech quality of test signals generated based on a reference signal and the real-time near-end noise signal; selecting at least one speech quality enhancement method based on the subjective speech quality and the perceptual-objective speech quality, and determining parameters that are to be applied to the selected at least one speech quality enhancement method; and enhancing speech quality of the far-end voice signal by using the selected at least one speech quality enhancement method, based on the determined parameters, wherein the test signals are generated by mixing the acquired real-time near-end noise signal with the reference signal whose speech quality is enhanced by applying a combination of parameter values to speech quality enhancement methods.

公开(公告)号：US10827175B2

公开(公告)日：2020-11-03

申请号：US16259341

申请日：2019-01-28

Applicant: SAMSUNG ELECTRONICS CO., LTD.

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

IPC: G10L19/16 ,  H04N19/124 ,  H04N19/196 ,  H04N19/40 ,  G10L19/032 ,  G10L19/24 ,  H03M13/05 ,  H03M13/15 ,  H03M13/31 ,  G10L19/035 ,  G10L19/038 ,  G10L19/02

Abstract: A spectrum coding method includes quantizing spectral data of a current band based on a first quantization scheme, generating a lower bit of the current band using the spectral data and the quantized spectral data, quantizing a sequence of lower bits including the lower bit of the current band based on a second quantization scheme, and generating a bitstream based on a upper bit excluding N bits, where N is 1 or greater, from the quantized spectral data and the quantized sequence of lower bits.

公开(公告)号：US10803877B2

公开(公告)日：2020-10-13

申请号：US15757547

申请日：2016-09-05

Applicant: SAMSUNG ELECTRONICS CO., LTD.

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

IPC: G10L21/00 ,  G10L19/028 ,  G10L19/22 ,  G10L21/0208 ,  G10L21/02 ,  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：US10332527B2

公开(公告)日：2019-06-25

申请号：US14916808

申请日：2013-09-05

Applicant: SAMSUNG ELECTRONICS CO., LTD. ,  Michael Anthony Stone

Inventor： Michael Anthony Stone ,  Han-gil Moon ,  Nam-suk Lee ,  Eun-mi Oh

IPC: G10L19/005 ,  G10L19/022 ,  G10L15/12 ,  G10L19/035 ,  G10L19/032

Abstract: Provided are an apparatus and a method for encoding and decoding audio signals, in which when determining a masking threshold according to a psychoacoustic model, accurate results may be obtained for a short window-based audio signal as well as for a long window-based audio signal. The apparatus for encoding audio signals according to the present invention comprises a masking threshold determining unit configured to determine, on the basis of a frame length of a first window having a divided audio signal, a masking threshold for a second window that has a different frame length from that of the first window.

公开(公告)号：US10283125B2

公开(公告)日：2019-05-07

申请号：US15617469

申请日：2017-06-08

Applicant: Samsung Electronics Co., Ltd.

Inventor： Eun-mi Oh ,  Ki-hyun Choo ,  Ho-sang Sung ,  Chang-yong Son ,  Jung-hoe Kim ,  Kang-eun Lee

IPC: G10L19/00 ,  G10L19/005 ,  G10L19/02 ,  G10L19/022

Abstract: An error concealment method and apparatus for an audio signal and a decoding method and apparatus for an audio signal using the error concealment method and apparatus. The error concealment method includes selecting one of an error concealment in a frequency domain and an error concealment in a time domain as an error concealment scheme for a current frame based on a predetermined criteria when an error occurs in the current frame, selecting one of a repetition scheme and an interpolation scheme in the frequency domain as the error concealment scheme for the current frame based on a predetermined criteria when the error concealment in the frequency domain is selected, and concealing the error of the current frame using the selected scheme.

公开(公告)号：US10249308B2

公开(公告)日：2019-04-02

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 ,  G10L21/00 ,  G10L19/00 ,  G10L19/07 ,  G10L25/15 ,  G10L19/12 ,  G10L19/06

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：US10074375B2

公开(公告)日：2018-09-11

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 ,  G10L21/00 ,  G10L19/00 ,  G10L19/07 ,  G10L19/06 ,  G10L19/12 ,  G10L25/15

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.