知搜-全球专利检索

  1. Login
  2. Sign Up

Search Results

74 records (took 0.042 seconds)

    METHOD AND APPARATUS FOR ENCODING AND DECODING AUDIO/SPEECH SIGNAL
    51.
    发明申请
    METHOD AND APPARATUS FOR ENCODING AND DECODING AUDIO/SPEECH SIGNAL 审中-公开
    编码和解码音频/语音信号的方法和装置

    公开(公告)号：US20140108008A1

    公开(公告)日：2014-04-17

    申请号：US14132224

    申请日：2013-12-18

    Applicant: Samsung Electronics Co., Ltd.

    Inventor： Chang-yong SON ,  Eun-mi OH ,  Jung-hoe KIM ,  Ho-sang SUNG ,  Kang-eun LEE ,  Ki-hyun CHOO

    IPC: G10L19/00

    CPC classification number: G10L19/00 ,  G10L19/025

    Abstract: Provided is a method of encoding an audio/speech signal, the method including determining a variable length of a frame, that is, a processing unit of an input signal in accordance with a position of an attack in the input signal; transforming each frame of the input signal to a frequency domain and dividing the frame into a plurality of sub frequency bands; and, if a signal of a sub frequency band is determined to be encoded in the frequency domain, encoding the signal of the sub frequency band in the frequency domain, and if the signal of the sub frequency band is determined to be encoded in a time domain, inverse transforming the signal of the sub frequency band to the time domain and encoding the inverse transformed signal in the time domain. According to the present invention, the audio/speech signal may be efficiently encoded by controlling time resolution and frequency resolution.

    Abstract translation: 提供了一种对音频/语音信号进行编码的方法，该方法包括根据输入信号中的攻击位置来确定帧的可变长度，即输入信号的处理单元; 将所述输入信号的每个帧变换为频域并将所述帧划分为多个子频带; 并且如果确定在频域中编码子频带的信号，则对频域中的子频带的信号进行编码，并且如果确定子频带的信号被编码在一个时间 域，将子频带的信号逆变换到时域，并对时域中的逆变换信号进行编码。 根据本发明，可以通过控制时间分辨率和频率分辨率来有效地编码音频/语音信号。

    AUDIO ENCODING METHOD AND APPARATUS, AUDIO DECODING METHOD AND APPARATUS, AND MULTIMEDIA DEVICE EMPLOYING THE SAME
    53.
    发明申请
    AUDIO ENCODING METHOD AND APPARATUS, AUDIO DECODING METHOD AND APPARATUS, AND MULTIMEDIA DEVICE EMPLOYING THE SAME 审中-公开
    音频编码方法和装置，音频解码方法和装置以及使用其的多媒体装置

    公开(公告)号：US20140046670A1

    公开(公告)日：2014-02-13

    申请号：US13909470

    申请日：2013-06-04

    Applicant: SAMSUNG ELECTRONICS CO., LTD.

    Inventor： Han-gil MOON ,  Hyun-wook KIM ,  Nam-suk LEE ,  Eun-mi OH

    IPC: G10L19/02

    CPC classification number: G10L19/02 ,  G10L19/0212 ,  G10L19/022

    Abstract: Provided is a method of encoding an audio signal. A method of encoding an audio signal includes generating a modified signal of a time domain to compensate a frequency resolution in frame units, analysis-windowing the modified signal of the time domain by using a window type which is designed to have an overlapping section less than 50%, and generating transform coefficients of a frequency domain by transforming the analysis-windowed signal of the time domain.

    Abstract translation: 提供了一种对音频信号进行编码的方法。 对音频信号进行编码的方法包括：生成时域的修正信号，以帧为单位补偿频率分辨率，通过使用被设计为具有重叠部分的重叠部分的窗口类型来分析窗口化时域的修改信号 50％，并且通过变换时域的分析窗口信号来生成频域的变换系数。

    METHOD AND APPARATUS FOR HIGH FREQUENCY DECODING FOR BANDWIDTH EXTENSION
    54.
    发明申请
    METHOD AND APPARATUS FOR HIGH FREQUENCY DECODING FOR BANDWIDTH EXTENSION 有权

    公开(公告)号：US20210020187A1

    公开(公告)日：2021-01-21

    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

    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.

    SIGNAL PROCESSING METHODS AND APPARATUSES FOR ENHANCING SOUND QUALITY
    55.
    发明申请
    SIGNAL PROCESSING METHODS AND APPARATUSES FOR ENHANCING SOUND QUALITY 有权

    公开(公告)号：US20210012786A1

    公开(公告)日：2021-01-14

    申请号：US17037128

    申请日：2020-09-29

    Applicant: SAMSUNG ELECTRONICS CO., LTD.

    Inventor： Ho-sang SUNG ,  Holly FRANCOIS ,  Ki-hyun CHOO ,  Eun-mi OH ,  Kyung-hun JUNG ,  Yaodu WEI

    IPC: G10L19/028 ,  G10L19/22 ,  G10L21/0208

    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.

    ELECTRONIC DEVICE AND CONTROL METHOD THEREFOR
    56.
    发明申请
    ELECTRONIC DEVICE AND CONTROL METHOD THEREFOR 审中-公开

    公开(公告)号：US20200342893A1

    公开(公告)日：2020-10-29

    申请号：US16757070

    申请日：2018-07-19

    Applicant: SAMSUNG ELECTRONICS CO., LTD.

    Inventor： Ki-hyun CHOO ,  Anton POROV ,  Jong-hoon JEONG ,  Ho-sang SUNG ,  Eun-mi OH ,  Jong-youb RYU

    IPC: G10L25/30 ,  G10L21/02

    Abstract: Disclosed is an electronic apparatus. The electronic apparatus includes a storage for storing a plurality of filters trained in a plurality of convolutional neural networks (CNNs) respectively and a processor configured to acquire a first spectrogram corresponding to a damaged audio signal, input the first spectrogram to a CNN corresponding to each frequency band to apply the plurality of filters trained in the plurality of CNNs respectively, acquire a second spectrogram by merging output values of the CNNs to which the plurality of filters are applied, and acquire an audio signal reconstructed based on the second spectrogram.

    METHOD AND APPARATUS FOR IMPROVING CALL QUALITY IN NOISE ENVIRONMENT
    57.
    发明申请
    METHOD AND APPARATUS FOR IMPROVING CALL QUALITY IN NOISE ENVIRONMENT 审中-公开

    公开(公告)号：US20200075038A1

    公开(公告)日：2020-03-05

    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: G10L25/60 ,  G10L25/03 ,  G10L25/78 ,  G10L21/0208 ,  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, :herein 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.

    HIGH-BAND ENCODING METHOD AND DEVICE, AND HIGH-BAND DECODING METHOD AND DEVICE
    58.
    发明申请
    HIGH-BAND ENCODING METHOD AND DEVICE, AND HIGH-BAND DECODING METHOD AND DEVICE 审中-公开

    公开(公告)号：US20200035250A1

    公开(公告)日：2020-01-30

    申请号：US16592876

    申请日：2019-10-04

    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.

Patent Agency Ranking