公开(公告)号：US08290770B2

公开(公告)日：2012-10-16

申请号：US12026066

申请日：2008-02-05

Applicant: Nam-suk Lee ,  Geon-hyoung Lee ,  Jae-one Oh ,  Chul-woo Lee ,  Jong-hoon Jeong

Inventor： Nam-suk Lee ,  Geon-hyoung Lee ,  Jae-one Oh ,  Chul-woo Lee ,  Jong-hoon Jeong

IPC: G10L19/14

CPC classification number: G10L19/093

Abstract: Provided are a method and apparatus for sinusoidal audio coding, which employs a tracking method for further effective coding of sinusoids extracted in the process of a sinusoidal analysis of parametric coding. The sinusoidal audio coding method includes: extracting sinusoids of a current frame by performing a sinusoidal analysis on an input audio signal; with respect to each of the extracted sinusoids, setting a mode selected from a birth mode in which a sinusoid is newly generated irrespective of sinusoids of a previous frame, a continuation mode in which the sinusoid is only one sinusoid continued from one of the sinusoids of the previous frame, and a branch mode in which the sinusoid is one of a plurality of sinusoids continued from one of the sinusoids of the previous frame; and coding the extracted sinusoids according to the selected mode. Accordingly, a plurality of sinusoids that can be continued from one previous track component are set to the continuation mode or the branch mode. Therefore, the number of bits of coded data is significantly reduced, compared with the case of the birth mode.

Abstract translation: 提供了一种用于正弦音频编码的方法和装置，其采用跟踪方法用于在参数编码的正弦分析的过程中提取的正弦曲线的进一步有效编码。 正弦音频编码方法包括：通过对输入音频信号执行正弦分析来提取当前帧的正弦曲线; 对于每个提取的正弦曲线，设定选自新生成正弦曲线的诞生模式的模式，而不管前一帧的正弦曲线，其中正弦曲线仅仅是一个正弦曲线的连续模式，其中一个正弦曲线从 前一帧，以及分支模式，其中正弦曲线是从前一帧的正弦曲线之一连续的多个正弦曲线之一; 并根据所选择的模式对所提取的正弦曲线进行编码。 因此，可以从一个先前的轨道分量继续的多个正弦曲线被设置为连续模式或分支模式。 因此，与出生模式的情况相比，编码数据的位数显着减少。

公开(公告)号：US20090198501A1

公开(公告)日：2009-08-06

申请号：US12361940

申请日：2009-01-29

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

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

IPC: G10L21/00

CPC classification number: G10L19/025 ,  G10L19/04

Abstract: Provided are a method and apparatus for encoding or decoding an audio signal by adaptively interpolating a linear predictive coding (LPC) coefficient. In the method and apparatus of encoding or decoding an audio signal, LPC coefficient interpolation is selectively performed depending on whether a transient section is present in a current frame, thereby preventing noise from occurring when interpolating LPC coefficients in the transient section.

Abstract translation: 提供了一种通过自适应地内插线性预测编码（LPC）系数来对音频信号进行编码或解码的方法和装置。 在对音频信号进行编码或解码的方法和装置中，根据在当前帧中是否存在瞬态部分来选择性地执行LPC系数内插，从而防止在对瞬态部分内插LPC系数时产生噪声。

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：US20080235034A1

公开(公告)日：2008-09-25

申请号：US12022581

申请日：2008-01-30

Applicant: Nam-suk LEE ,  Geon-hyoung LEE ,  Jae-one OH ,  Chul-woo LEE ,  Jong-hoon JEONG

Inventor： Nam-suk LEE ,  Geon-hyoung LEE ,  Jae-one OH ,  Chul-woo LEE ,  Jong-hoon JEONG

IPC: G10L19/00

CPC classification number: G10L19/093

Abstract: Provided are a method and apparatus for encoding an audio signal to efficiently encode a harmonic envelope and a method and apparatus for decoding an audio signal to decode the harmonic envelope. The method of encoding an audio signal includes performing harmonic analysis with respect to an input signal to determine harmonic parameters with respect to harmonic signals; regarding amplitudes of the harmonic signals included in the harmonic parameters as signals in the time domain so as to perform time-frequency transformation; and encoding the time-frequency transformed values. When expressing a harmonic envelope, the amplitudes of the harmonic signals are regarded as signals in the time domain so as to perform a time-frequency transformation and only a part from among the transformed values is selected to be encoded. Therefore, sound quality is not affected and coding efficiency greatly improves.

Abstract translation: 提供了一种用于对音频信号进行编码以有效地编码谐波包络的方法和装置，以及用于对音频信号进行解码以解码谐波包络的方法和装置。 对音频信号进行编码的方法包括对输入信号执行谐波分析以确定相对于谐波信号的谐波参数; 将包括在谐波参数中的谐波信号的幅度作为时域中的信号进行时频转换; 并对时间 - 频率变换的值进行编码。 当表示谐波包络时，谐波信号的幅度被认为是时域中的信号，以便执行时间 - 频率变换，并且仅选择变换值中的一部分进行编码。 因此，音质不受影响，编码效率大大提高。

公开(公告)号：US20080228500A1

公开(公告)日：2008-09-18

申请号：US12015698

申请日：2008-01-17

Applicant: Jae-one Oh ,  Geon-hyoung Lee ,  Chul-woo Lee ,  Jong-hoon Jeong ,  Nam-suk Lee

Inventor： Jae-one Oh ,  Geon-hyoung Lee ,  Chul-woo Lee ,  Jong-hoon Jeong ,  Nam-suk Lee

IPC: G10L19/00

CPC classification number: G10L19/0208 ,  G10L19/028

Abstract: A method and apparatus for encoding/decoding audio signals at a low bit rate are provided. The encoding apparatus selectively encodes one or more reference samples having the highest amplitudes among frequency samples of an audio signal, determines amplitudes of the remaining samples other than the reference sample according to a predetermined pattern, using a predetermined random function, and then encodes the remaining samples using random function input information for causing the same pattern to be generated using the same random function, thus maximizing an encoding rate for an audio signal having a large amount of noise.

Abstract translation: 提供了一种用于以低比特率对音频信号进行编码/解码的方法和装置。 编码装置对音频信号的频率样本中具有最高幅度的一个或多个参考样本进行选择性编码，使用预定的随机函数根据预定的模式确定除了参考样本之外的剩余样本的幅度，然后对其余的样本进行编码 使用随机函数输入信息的样本，以使得使用相同的随机函数产生相同的图案，从而最大化具有大量噪声的音频信号的编码率。

公开(公告)号：US20070005565A1

公开(公告)日：2007-01-04

申请号：US11389231

申请日：2006-03-27

Applicant: Jong-hoon Jeong ,  Geon-hyoung Lee ,  Chul-woo Lee

Inventor： Jong-hoon Jeong ,  Geon-hyoung Lee ,  Chul-woo Lee

IPC: G06F17/30

CPC classification number: G10L13/00 ,  G06F16/40

Abstract: A database searching method and apparatus for searching database information for a media stored in a multimedia device or data stored in a data processing device, and providing the search result in a sound format. The method includes searching and detecting a database for a data search, transforming the detected database information into a speech signal, and outputting the speech signal as the search result.

Abstract translation: 一种用于搜索存储在多媒体设备中的媒体或数据处理设备中存储的数据的数据库信息的数据库搜索方法和装置，并且以声音格式提供搜索结果。 该方法包括搜索和检测用于数据搜索的数据库，将检测到的数据库信息变换成语音信号，并输出语音信号作为搜索结果。

公开(公告)号：US08843380B2

公开(公告)日：2014-09-23

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 ,  G10L19/08 ,  G10L19/025

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：US08538762B2

公开(公告)日：2013-09-17

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：US08055506B2

公开(公告)日：2011-11-08

申请号：US12023410

申请日：2008-01-31

Applicant: Geon-hyoung Lee ,  Jae-one Oh ,  Chul-woo Lee ,  Jong-hoon Jeong ,  Nam-suk Lee

Inventor： Geon-hyoung Lee ,  Jae-one Oh ,  Chul-woo Lee ,  Jong-hoon Jeong ,  Nam-suk Lee

IPC: G10L11/04

CPC classification number: G10L19/093

Abstract: Provided is an audio encoding and decoding apparatus and method for improving a compression ratio while maintaining sound quality when sinusoidal waves of an audio signal are connected and encoded. The audio encoding method includes connecting sinusoidal waves of an input audio signal, converting a frequency of each of the connected sinusoidal waves to a psychoacoustic frequency, performing a first encoding operation for encoding the psychoacoustic frequency, performing a second encoding operation for encoding an amplitude of each of the connected sinusoidal waves, and outputting an encoded audio signal comprising the encoding result of the first encoding operation and the encoding result of the second encoding operation.

Abstract translation: 提供了一种用于在音频信号的正弦波被连接和编码的同时保持声音质量的同时改善压缩比的音频编码和解码装置和方法。 音频编码方法包括连接输入音频信号的正弦波，将连接的正弦波中的每一个的频率转换为心理声学频率，执行用于对心理声学频率进行编码的第一编码操作，执行第二编码操作， 每个连接的正弦波，并且输出包括第一编码操作的编码结果和第二编码操作的编码结果的编码音频信号。

公开(公告)号：US08024180B2

公开(公告)日：2011-09-20

申请号：US12022581

申请日：2008-01-30

Applicant: Nam-suk Lee ,  Geon-hyoung Lee ,  Jae-one Oh ,  Chul-woo Lee ,  Jong-hoon Jeong

Inventor： Nam-suk Lee ,  Geon-hyoung Lee ,  Jae-one Oh ,  Chul-woo Lee ,  Jong-hoon Jeong

IPC: G10L19/02 ,  G10L11/04

CPC classification number: G10L19/093

Abstract: Provided are a methods and apparatuses for encoding/decoding an audio signal to efficiently encode/decode a harmonic envelope. The method of encoding an audio signal includes performing harmonic analysis with respect to an input signal to determine harmonic parameters with respect to harmonic signals; correlating the amplitudes of the harmonic signals to signals in a time domain instead of signals in a frequency domain; applying a time-frequency transformation operation to the amplitudes in the time domain to generate time-frequency transformed values in the frequency domain; and encoding the time-frequency transformed values. When expressing a harmonic envelope, the amplitudes of the harmonic signals are regarded as signals in the time domain so as to perform a time-frequency transformation and only a part from among the transformed values is selected to be encoded. Therefore, sound quality is not affected and coding efficiency greatly improves.

Abstract translation: 提供了一种用于对音频信号进行编码/解码以有效地编码/解码谐波包络的方法和装置。 对音频信号进行编码的方法包括对输入信号执行谐波分析以确定相对于谐波信号的谐波参数; 将谐波信号的幅度与时域中的信号相关，而不是频域中的信号; 对时域中的振幅应用时频变换操作，以产生频域中的时频变换值; 并对时间 - 频率变换的值进行编码。 当表示谐波包络时，谐波信号的幅度被认为是时域中的信号，以便执行时间 - 频率变换，并且仅选择变换值中的一部分进行编码。 因此，音质不受影响，编码效率大大提高。