公开(公告)号：US20070174051A1

公开(公告)日：2007-07-26

申请号：US11524274

申请日：2006-09-21

Applicant: Eun Mi Oh ,  Ki Hyun Choo ,  Jung-Hoe Kim ,  Chang Yong Son

Inventor： Eun Mi Oh ,  Ki Hyun Choo ,  Jung-Hoe Kim ,  Chang Yong Son

IPC: G10L19/14

CPC classification number: G10L19/0208 ,  G10L19/22

Abstract: An adaptive time/frequency-based encoding mode determination apparatus including a time domain feature extraction unit to generate a time domain feature by analysis of a time domain signal of an input audio signal, a frequency domain feature extraction unit to generate a frequency domain feature corresponding to each frequency band generated by division of a frequency domain corresponding to a frame of the input audio signal into a plurality of frequency domains, by analysis of a frequency domain signal of the input audio signal, and a mode determination unit to determine any one of a time-based encoding mode and a frequency-based encoding mode, with respect to the each frequency band, by use of the time domain feature and the frequency domain feature.

Abstract translation: 一种自适应时间/频率编码模式确定装置，包括：时域特征提取单元，用于通过分析输入音频信号的时域信号来产生时域特征;频域特征提取单元，用于产生相应的频域特征; 通过对输入音频信号的频域信号的分析和模式确定单元来确定通过将与输入音频信号的帧相对应的频域划分成多个频域而产生的每个频带，以确定任何一个 基于时间的编码模式和基于频率的编码模式，通过使用时域特征和频域特征，相对于每个频带。

公开(公告)号：US08705779B2

公开(公告)日：2014-04-22

申请号：US12458028

申请日：2009-06-29

Applicant: Kang Eun Lee ,  Do-Hyung Kim ,  Chang Yong Son

Inventor： Kang Eun Lee ,  Do-Hyung Kim ,  Chang Yong Son

IPC: H04R5/033

CPC classification number: H04S3/00

Abstract: A surround sound virtualization apparatus and method. The surround sound virtualization apparatus may include an audio decoder to perform head-related transfer function (HRTF) filtering, and a time delay unit to provide a time delay to a plurality of output signals of the audio decoder.

Abstract translation: 环绕声虚拟化设备和方法。 环绕声虚拟化装置可以包括用于执行头相关传送功能（HRTF）滤波的音频解码器，以及为音频解码器的多个输出信号提供时间延迟的时间延迟单元。

公开(公告)号：US20120278089A1

公开(公告)日：2012-11-01

申请号：US13544203

申请日：2012-07-09

Applicant: Eun-mi OH ,  Ki-hyun Choo ,  Ho-sang Sung ,  Chang-yong Son ,  Jung-heo Kim ,  Kang-eun Lee

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

IPC: G10L19/00

CPC classification number: G10L19/005 ,  G10L19/0212 ,  G10L19/022 ,  H03M13/00

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.

Abstract translation: 一种用于音频信号的错误隐藏方法和装置，以及使用错误隐藏方法和装置的用于音频信号的解码方法和装置。 错误隐藏方法包括：当在当前帧中发生错误时，基于预定标准，选择频域中的错误隐藏和时域中的错误隐藏中的一个作为当前帧的错误隐藏方案，选择 重复方案和在频域中的内插方案作为当前帧的错误隐藏方案，当选择频域中的错误隐藏时，基于预定标准，并且使用所选择的方案来隐藏当前帧的错误。

公开(公告)号：US20110091044A1

公开(公告)日：2011-04-21

申请号：US12805414

申请日：2010-07-29

Applicant: Kang Eun Lee ,  Do-Hyung Kim ,  Chang Yong Son

Inventor： Kang Eun Lee ,  Do-Hyung Kim ,  Chang Yong Son

IPC: H04R5/04

CPC classification number: H04R5/04

Abstract: A virtual speaker apparatus and a virtual speaker processing method is disclosed. The virtual speaker apparatus uses the closest surround speaker when a virtual speaker to be virtually generated is a back left virtual speaker or a back right virtual speaker.

Abstract translation: 公开了一种虚拟扬声器装置和虚拟扬声器处理方法。 当虚拟生成虚拟扬声器时，虚拟扬声器设备使用最靠近的环绕扬声器是后左虚拟扬声器或后右虚拟扬声器。

公开(公告)号：US20100036658A1

公开(公告)日：2010-02-11

申请号：US12588357

申请日：2009-10-13

Applicant: Chang-yong Son ,  Ho-chong Park ,  Yong-beom Lee ,  Woo-suk Lee

Inventor： Chang-yong Son ,  Ho-chong Park ,  Yong-beom Lee ,  Woo-suk Lee

IPC: G10L19/12 ,  G10L21/00 ,  G10L21/04

CPC classification number: G10L19/24

Abstract: A speech compression apparatus including: a first band-transform unit transforming a wideband speech signal to a narrowband low-band speech signal; a narrowband speech compressor compressing the narrowband low-band speech signal and outputting a result of the compressing as a low-band speech packet; a decompression unit decompressing the low-band speech packet and obtaining a decompressed wideband low-band speech signal; an error detection unit detecting an error signal that corresponds to a difference between the wideband speech signal and the decompressed wideband low-band speech signal; and a high-band speech compression unit compressing the error signal and a high-band speech signal of the wideband speech signal and outputting the result of the compressing as a high-band speech packet.

Abstract translation: 一种语音压缩装置，包括：将宽带语音信号变换为窄带低频语音信号的第一频带变换单元; 窄带语音压缩器压缩窄带低频语音信号并输出​​压缩结果作为低频语音分组; 解压缩单元解压缩低频带语音分组并获得解压缩的宽带低频语音信号; 误差检测单元，检测对应于宽带语音信号和解压缩宽带低频带语音信号之间的差的误差信号; 以及高频语音压缩单元，压缩宽带语音信号的误差信号和高频带语音信号，并将压缩结果输出为高频带语音分组。

公开(公告)号：US07624022B2

公开(公告)日：2009-11-24

申请号：US10882339

申请日：2004-07-02

Applicant: Chang-yong Son ,  Ho-chong Park ,  Yong-beom Lee ,  Woo-suk Lee

Inventor： Chang-yong Son ,  Ho-chong Park ,  Yong-beom Lee ,  Woo-suk Lee

IPC: G10L21/00

CPC classification number: G10L19/24

Abstract: A speech compression apparatus including: a first band-transform unit transforming a wideband speech signal to a narrowband low-band speech signal; a narrowband speech compressor compressing the narrowband low-band speech signal and outputting a result of the compressing as a low-band speech packet; a decompression unit decompressing the low-band speech packet and obtaining a decompressed wideband low-band speech signal; an error detection unit detecting an error signal that corresponds to a difference between the wideband speech signal and the decompressed wideband low-band speech signal; and a high-band speech compression unit compressing the error signal and a high-band speech signal of the wideband speech signal and outputting the result of the compressing as a high-band speech packet.

Abstract translation: 一种语音压缩装置，包括：将宽带语音信号变换为窄带低频语音信号的第一频带变换单元; 窄带语音压缩器压缩窄带低频语音信号并输出​​压缩结果作为低频语音分组; 解压缩单元解压缩低频带语音分组并获得解压缩的宽带低频语音信号; 误差检测单元，检测对应于宽带语音信号和解压缩宽带低频带语音信号之间的差的误差信号; 以及高频语音压缩单元，压缩宽带语音信号的误差信号和高频带语音信号，并将压缩结果输出为高频带语音分组。

公开(公告)号：US07498959B2

公开(公告)日：2009-03-03

申请号：US11766322

申请日：2007-06-21

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

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

IPC: H03M7/12

CPC classification number: G10L19/0208 ,  G10L21/038

Abstract: Encoding and/or decoding a wideband signal produces high frequency band spectra from low frequency band spectral information. Linear prediction filter coefficients are determined for the entire wideband spectrum of an input signal. An energy value in each of a plurality of sub-bands in the high frequency band is determined and encoded. The short-term correlation removed input signal is then down-sampled to form a low frequency band signal. At a decoder, the high frequency band signal is generated using the encoded low frequency band signal. The energy in each sub-band of the high frequency band is adjusted using the encoded energy value. Thus, the spectral envelope for the entire wideband signal is synthesized and decoded using linear predictive synthesis.

Abstract translation: 编码和/或解码宽带信号从低频带频谱信息产生高频带频谱。 对于输入信号的整个宽带谱确定线性预测滤波器系数。 确定并编码高频带中的多个子带中的每一个中的能量值。 然后将短期相关去除输入信号进行下采样以形成低频带信号。 在解码器处，使用编码的低频带信号产生高频带信号。 使用编码的能量值来调整高频带的每个子带中的能量。 因此，使用线性预测合成来合成和解码整个宽带信号的频谱包络。

公开(公告)号：US20070233473A1

公开(公告)日：2007-10-04

申请号：US11608956

申请日：2006-12-11

Applicant: Kang Eun LEE ,  Eun Mi Oh ,  Ho Sang Sung ,  Chang Yong Son

Inventor： Kang Eun LEE ,  Eun Mi Oh ,  Ho Sang Sung ,  Chang Yong Son

IPC: G10L19/00

CPC classification number: G10L19/032

Abstract: A method of multi-path trellis coded quantization (TCQ) usable in a speech coding system, and a quantizer using the method. Specifically the method includes calculating accumulated distortions corresponding to 2N survivor paths, wherein N indicates an integer greater than two, each of the 2N survivor paths is going towards one of nodes at an i th stage of a trellis, and i indicates an integer greater than zero, comparing the accumulated distortions respectively corresponding to the 2N survivor paths to select N paths among the 2N survivor paths, wherein the accumulated distortions corresponding to selected N paths are smaller than the accumulated distortions corresponding to unselected N paths establishing the selected N paths as survivor paths going toward an i+1 th stage, and selecting an optimal path among the 2N survivor paths corresponding to each node of a last stage.

Abstract translation: 一种可用于语音编码系统的多径网格编码量化（TCQ）的方法，以及使用该方法的量化器。 具体地，该方法包括计算对应于2N个幸存路径的累积失真，其中N表示大于2的整数，2N个幸存路径中的每一个正在网格的第i阶段中的一个节点，i表示大于 比较分别对应于2N个幸存路径的累积失真以选择2N个幸存路径中的N个路径，其中对应于所选N个路径的累积失真小于对应于建立所选择的N个路径的未选择的N个路径的累积失真作为幸存者 路径朝向第i + 1级，并且在对应于最后一级的每个节点的2N个幸存路径中选择最佳路径。

公开(公告)号：US20050027516A1

公开(公告)日：2005-02-03

申请号：US10891423

申请日：2004-07-15

Applicant: Woo-suk Lee ,  Ho-chong Park ,  Chang-yong Son

Inventor： Woo-suk Lee ,  Ho-chong Park ,  Chang-yong Son

IPC: G10L19/02 ,  G10L19/00 ,  G10L19/12 ,  G10L19/14 ,  G10L21/02 ,  H03M7/30 ,  G10L19/04

CPC classification number: G10L21/038 ,  G10L19/24

Abstract: An apparatus to compress a wide-band speech signal, the apparatus including a narrow-band speech compressor to compress a low-band speech signal of the wide-band speech signal and output the compressed low-band speech signal as a low-band speech packet; and a high-band speech compressor to compress a high-band speech signal of the wide-band speech signal using energy information of the low-band speech signal provided from the narrow-band speech compressor, and outputs the compressed high-band speech signal as a high-band speech packet.

Abstract translation: 一种用于压缩宽带语音信号的装置，该装置包括窄带语音压缩器，以压缩宽带语音信号的低频语音信号，并将压缩的低频语音信号作为低频带语音输出 包; 以及高频带语音压缩器，使用从窄带语音压缩器提供的低频语音信号的能量信息来压缩宽带语音信号的高频语音信号，并输出压缩的高频带语音信号 作为高频带语音包。

公开(公告)号：US08712782B2

公开(公告)日：2014-04-29

申请号：US11939074

申请日：2007-11-13

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

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

IPC: G10L21/00 ,  G10L19/22 ,  G10L19/00 ,  G10L19/005 ,  G10L19/02 ,  G10L19/18

Abstract: A method and apparatus to determine an encoding mode of an audio signal, and a method and apparatus to encode an audio signal according to the encoding mode. In the encoding mode determination method, a mode determination threshold for the current frame that is subject to encoding mode determination is adaptively adjusted according to a long-term feature of the audio signal for a frame (the current frame) that is subject to encoding mode determination, thereby improving the hit rate of encoding mode determination and signal classification, suppressing frequent oscillation of an encoding mode in frame units, improving noise tolerance, and improving smoothness of a reconstructed audio signal.