公开(公告)号：US20110051938A1

公开(公告)日：2011-03-03

申请号：US12862819

申请日：2010-08-25

Applicant: Han-gil MOON ,  Nam-suk LEE

Inventor： Han-gil MOON ,  Nam-suk LEE

IPC: H04R5/00

CPC classification number: G10L19/008 ,  H04S2420/03

Abstract: A method of encoding stereo audio that minimizes a number of pieces of side information required for parametric-encoding and parametric-decoding of the stereo audio. The side information may include parameters about interchannel intensity difference (IID), interchannel correlation (IC), overall phase difference (OPD), and interchannel phase difference (IPD), which are required to restore the mono audio to the stereo audio.

Abstract translation: 一种对立体声音频进行编码的方法，其使得对立体声音频的参数编码和参数解码所需的多条边信息最小化。 侧面信息可以包括将单声道音频恢复到立体声音频所需的关于通道间强度差（IID），通道间相关性（IC），总体相位差（OPD）和通道间相位差（IPD））的参数。

公开(公告)号：US20090210236A1

公开(公告)日：2009-08-20

申请号：US12389639

申请日：2009-02-20

Applicant: Han-gil MOON ,  Geon-hyoung LEE ,  Chul-woo LEE ,  Jong-hoon JEONG ,  Nam-suk LEE

Inventor： Han-gil MOON ,  Geon-hyoung LEE ,  Chul-woo LEE ,  Jong-hoon JEONG ,  Nam-suk LEE

IPC: G10L19/00

CPC classification number: G10L19/008

Abstract: Provided are a method and apparatus for encoding/decoding stereo audio. In the method for encoding stereo audio, stereo audio is encoded based on at least one of the phase difference between first and second channel audios and information on an angle made by a vector on the intensity of mono-audio and a vector on the intensity of the first channel audio or a vector on the intensity of the second channel audio. Thus, the number of encoded parameters is minimized so that a compression ratio in the encoding of the stereo audio is improved.

Abstract translation: 提供了一种用于对立体声音频进行编码/解码的方法和装置。 在对立体声音频进行编码的方法中，基于第一和第二声道音频之间的相位差中的至少一个以及由矢量对单声道的强度和向量的角度的信息对立体声音频进行编码， 第一声​​道音频或第二声道音频强度的向量。 因此，编码参数的数量被最小化，从而提高了立体声音频的编码中的压缩率。

公开(公告)号：US20090198499A1

公开(公告)日：2009-08-06

申请号：US12174936

申请日：2008-07-17

Applicant: Chul-woo LEE ,  Geon-hyoung LEE ,  Jong-hoon JEONG ,  Nam-suk LEE ,  Han-gil MOON

Inventor： Chul-woo LEE ,  Geon-hyoung LEE ,  Jong-hoon JEONG ,  Nam-suk LEE ,  Han-gil MOON

IPC: G10L19/00

CPC classification number: G10L19/08 ,  G10L19/025

Abstract: Encoding and decoding of residual signals are provided. In a method of encoding a residual signal of an audio signal, the residual signal is divided into a plurality of sections having different sizes, based on a change of the residual signal. Then, section division information representing information about the divided sections and section-by-section residual signal information representing characteristics of the sections of the residual signal are acquired. Thereafter, the residual signal is encoded based on the section division information and the section-by-section residual signal information.

Abstract translation: 提供残留信号的编码和解码。 在对音频信号的残差信号进行编码的方法中，残差信号根据残差信号的变化被划分为具有不同大小的多个部分。 然后，获取表示关于分割部分的信息的部分分割信息和表示残留信号的各部分的特征的逐段残差信号信息。 此后，基于区段分割信息和逐段残差信号对剩余信号进行编码。

公开(公告)号：US20130022205A1

公开(公告)日：2013-01-24

申请号：US13588563

申请日：2012-08-17

Applicant: Han-gil MOON ,  Sun-min KIM ,  In-gyu CHUN

Inventor： Han-gil MOON ,  Sun-min KIM ,  In-gyu CHUN

IPC: H04R5/00

CPC classification number: H04S7/30 ,  H04S1/00 ,  H04S3/008 ,  H04S2400/01 ,  H04S2420/01 ,  H04S2420/03 ,  H04S2420/07

Abstract: A binaural decoder for an MPEG surround stream, which decodes an MPEG surround stream into a stereo 3D signal, and a decoding method thereof. The method includes dividing a compressed audio stream and head related transfer function (HRTF) data into subbands, selecting predetermined subbands of the HRTF data divided into subbands and filtering the HRTF data to obtain the selected subbands, decoding the audio stream divided into subbands into a stream of multi-channel audio data with respect to subbands according to spatial additional information, and binaural-synthesizing the HRTF data of the selected subbands with the multi-channel audio data of corresponding subbands.

Abstract translation: 用于将MPEG环绕流解码为立体声3D信号的MPEG环绕流的双耳解码器及其解码方法。 该方法包括将压缩音频流和头相关传输函数（HRTF）数据划分成子带，选择被分成子带的HRTF数据的预定子带，并对HRTF数据进行滤波以获得所选择的子带，将分成子带的音频流解码为 根据空间附加信息相对于子带的多声道音频数据流，以及使用相应子带的多声道音频数据对所选择的子带的HRTF数据进行双耳合成。

公开(公告)号：US20110046963A1

公开(公告)日：2011-02-24

申请号：US12693990

申请日：2010-01-26

Applicant: Hyun-wook KIM ,  Jong-hoon JEONG ,  Han-gil MOON

Inventor： Hyun-wook KIM ,  Jong-hoon JEONG ,  Han-gil MOON

IPC: G10L19/00

CPC classification number: G10L19/008

Abstract: Provided is a multi-channel audio decoding method and apparatus therefor, the method involving decoding filter bank coefficients of a plurality of bands from a bitstream having a predetermined format; performing frequency transformation on the decoded filter bank coefficients of the plurality of bands, with respect to each of the plurality of bands; compensating for a phase of each of the plurality of bands according to a predetermined phase compensation value, and serially band-synthesizing the frequency-transformed coefficients of each of the plurality of phase-compensated bands on a frequency domain; and decoding a multi-channel audio signal from the band-synthesized frequency-transformed coefficients.

Abstract translation: 提供一种多声道音频解码方法及其装置，该方法包括从具有预定格式的比特流中解码多个频带的滤波器组系数; 对所述多个频带的解码滤波器组系数进行相对于所述多个频带中的每一个的频率变换; 根据预定的相位补偿值补偿多个频带中的每一个的相位，并且对频域上的多个相位补偿频带中的每一个的频率变换系数进行串行频带合成; 以及从频带合成的频率变换系数中解码多声道音频信号。

公开(公告)号：US20110047379A1

公开(公告)日：2011-02-24

申请号：US12858677

申请日：2010-08-18

Applicant: Han-gil MOON ,  Kyung-sun CHO ,  Hyun-wook KIM

Inventor： Han-gil MOON ,  Kyung-sun CHO ,  Hyun-wook KIM

IPC: H04L9/18 ,  H04H20/88 ,  H04L9/32

CPC classification number: H04H20/89 ,  H04H20/33 ,  H04H60/23 ,  H04H2201/11 ,  H04L9/065 ,  H04L2209/601

Abstract: Provided are a method and apparatus for transmitting digital multimedia broadcasting data, and a method and apparatus for receiving digital multimedia broadcasting data. A basic audio signal and a multichannel audio signal are encoded to generate a basic audio stream and a multichannel audio stream, and a first data stream describing property and position data of the basic audio stream and a second data stream describing property and position data of the multichannel audio stream are transmitted as independent streams. According to the performance of the receiving apparatus, an audio signal may be decoded by using just the first data stream only or both the first data stream and the second stream.

Abstract translation: 提供一种用于发送数字多媒体广播数据的方法和装置，以及用于接收数字多媒体广播数据的方法和装置。 编码基本音频信号和多声道音频信号以生成基本音频流和多声道音频流，以及描述基本音频流的属性和位置数据的第一数据流以及描述基本音频流的属性和位置数据的第二数据流 多声道音频流作为独立流传输。 根据接收装置的性能，可以仅使用第一数据流或第一数据流和第二流二者来解码音频信号。

公开(公告)号：US20120035937A1

公开(公告)日：2012-02-09

申请号：US13198763

申请日：2011-08-05

Applicant: Hyun-wook KIM ,  Han-gil MOON ,  Sang-hoon LEE

Inventor： Hyun-wook KIM ,  Han-gil MOON ,  Sang-hoon LEE

IPC: G10L19/00

CPC classification number: G10L19/0204

Abstract: A method and apparatus for generating synthesis audio signals are provided. The method includes decoding a bitstream; splitting the decoded bitstream into n sub-band signals; generating n transformed sub-band signals by transforming the n sub-band signals in a frequency domain; and generating synthesis audio signals by respectively multiplying the n transformed sub-band signals by values corresponding to synthesis filter bank coefficients.

Abstract translation: 提供了一种用于产生合成音频信号的方法和装置。 该方法包括对比特流进行解码; 将解码的比特流分解成n个子带信号; 通过在频域中变换n个子带信号来产生n个变换的子带信号; 以及通过分别将n个经变换的子带信号乘以与合成滤波器组系数相对应的值来产生合成音频信号。

公开(公告)号：US20090089049A1

公开(公告)日：2009-04-02

申请号：US12237413

申请日：2008-09-25

Applicant: Han-gil MOON ,  Geon-hyoung LEE

Inventor： Han-gil MOON ,  Geon-hyoung LEE

IPC: G10L19/00

CPC classification number: G10L19/035

Abstract: Provided are a method of adaptively determining a quantization step according to a masking effect in a psychoacoustics model and a method of encoding/decoding an audio signal by using the determined quantization step. The method of adaptively determining a quantization step includes calculating a first ratio value indicating an intensity of an input audio signal with respect to a masking threshold; and determining the maximum value of the quantization step in a range in which noise generated when the audio signal is quantized is masked, according to the first ratio value. According to the present invention, quantization noise may be removed and the number of bits required to encode an audio signal may be reduced, by using auditory characteristics of humans.

Abstract translation: 提供了一种根据心理声学模型中的掩蔽效应自适应地确定量化步长的方法，以及通过使用所确定的量化步长对音频信号进行编码/解码的方法。 自适应地确定量化步骤的方法包括：计算指示输入音频信号相对于屏蔽阈值的强度的第一比值; 以及根据所述第一比值确定在音频信号被量化时产生的噪声被屏蔽的范围内的所述量化步长的最大值。 根据本发明，可以通过使用人的听觉特征来消除量化噪声并且可以减少编码音频信号所需的比特数。

公开(公告)号：US20070147638A1

公开(公告)日：2007-06-28

申请号：US11531759

申请日：2006-09-14

Applicant: Han-gil MOON

Inventor： Han-gil MOON

IPC: H03G5/00 ,  H04R3/00

CPC classification number: H04R3/04

Abstract: An apparatus and a method of removing voice signals. The apparatus to remove a voice signal includes a band reject filter unit which generates a first signal by partially or wholly removing a plurality of predetermined frequency band components corresponding to a voice frequency band from an input signal, a sound quality compensation unit which generates a second signal by calculating a difference signal of channel signals of the first signal and removing a component corresponding to a predetermined intermediate frequency band, a band pass filter which generates a third signal by passing the predetermined intermediate frequency band of the first signal, and an audio signal generation unit which generates an output audio signal by synthesizing the second and third signals.

Abstract translation: 一种去除语音信号的装置和方法。 去除语音信号的装置包括频带拒绝滤波器单元，其通过部分地或全部地从输入信号中去除与语音频带相对应的多个预定频带分量来产生第一信号，声音质量补偿单元产生第二信号 信号，通过计算第一信号的信道信号的差分信号并去除与预定中间频带相对应的分量;带通滤波器，其通过使第一信号的预定中间频带通过第三信号产生第三信号;以及音频信号 生成单元，其通过合成第二和第三信号来生成输出音频信号。

公开(公告)号：US20110051939A1

公开(公告)日：2011-03-03

申请号：US12868077

申请日：2010-08-25

Applicant: Han-gil MOON ,  Jong-hoon JEONG

Inventor： Han-gil MOON ,  Jong-hoon JEONG

IPC: H04R5/00

CPC classification number: H04S3/008 ,  H04S2400/03 ,  H04S2420/01 ,  H04S2420/03 ,  H04S2420/07

Abstract: A method of encoding stereo audio that minimizes a number of pieces of side information required for parametric-encoding and parametric-decoding of the stereo audio. The side information may include parameters about interchannel intensity difference (IID), interchannel correlation (IC), overall phase difference (OPD), and interchannel phase difference (IPD), which are required to restore the mono audio to the stereo audio.