公开(公告)号：US20080294445A1

公开(公告)日：2008-11-27

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: G10L19/00

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：US20080195398A1

公开(公告)日：2008-08-14

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: G10L19/00

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 by mixing 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，并且通过混合第一编码操作的编码结果和第二编码操作的编码结果来输出编码的音频信号。

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：US20090063163A1

公开(公告)日：2009-03-05

申请号：US12186128

申请日：2008-08-05

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

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

IPC: G10L19/00

CPC classification number: G10L19/093 ,  G10L19/09

Abstract: Provided are a method and apparatus for encoding/decoding a media signal. The method of encoding a media signal includes: when harmonics exist in a sinusoid of a previous frame section, predicting a harmonic frequency of a current frame section that is to be encoded by using a harmonic frequency of the previous frame section, and generating a residual signal by using a difference between the predicted frequency and an actual harmonic frequency of the current frame section.

Abstract translation: 提供了一种用于对媒体信号进行编码/解码的方法和装置。 编码媒体信号的方法包括：当在前一帧部分的正弦波中存在谐波时，通过使用前一帧部分的谐波频率来预测要编码的当前帧部分的谐波频率，并产生残差 通过使用预测频率与当前帧部分的实际谐波频率之间的差来产生信号。

公开(公告)号：US20090063162A1

公开(公告)日：2009-03-05

申请号：US12170819

申请日：2008-07-10

Applicant: Geon-hyoung LEE ,  Jong-hoon JEONG ,  Nam-suk LEE

Inventor： Geon-hyoung LEE ,  Jong-hoon JEONG ,  Nam-suk LEE

IPC: G10L19/00

CPC classification number: G10L19/093

Abstract: Provided are parametric audio encoding and decoding apparatuses and methods thereof. In the parametric audio encoding method, an audio signal is segmented into a plurality of segments. At least one sine wave is extracted from each of the segments, and the extracted sine waves are connected. It is determined whether an extracted sine wave is a birth sine wave. If the extracted sine wave is a birth sine wave, a bit stream is generated by encoding the phase of the birth sine wave on the basis of the frequency of the birth sine wave, wherein the number of bits allocated to encode the phase of the birth sine wave is adjusted according to the frequency of the birth sine wave.

Abstract translation: 提供了参数音频编码和解码装置及其方法。 在参数音频编码方法中，音频信号被分割成多个片段。 从每个段提取至少一个正弦波，并且提取的正弦波被连接。 确定提取的正弦波是否是出生正弦波。 如果提取的正弦波是出生正弦波，则通过根据出生正弦波的频率编码出生正弦波的相位来产生比特流，其中分配用于编码出生阶段的比特数 正弦波根据出生正弦波的频率进行调整。

公开(公告)号：US20090048849A1

公开(公告)日：2009-02-19

申请号：US12174875

申请日：2008-07-17

Applicant: Nam-suk LEE ,  Geon-hyoung LEE

Inventor： Nam-suk LEE ,  Geon-hyoung LEE

IPC: G10L19/00

CPC classification number: G10L19/093

Abstract: An audio encoding method and apparatus, and an audio decoding method and apparatus, for processing a death sinusoid and a general continuation sinusoid. Using the unique characteristic of a death sinusoid, in that the death sinusoid has a tendency such that an amplitude component of the death sinusoid is less than that of a previous sinusoid, a method of adding an encoding syntax by distinguishing a general continuation sinusoid from a death sinusoid is provided. That is, when difference coding of the amplitude component of a death sinusoid is performed, the number of bits used when a negative number is coded is less than the number of bits used when a positive number is coded, in a Huffman table. By using this method, a bit rate in an entire coding decreases.

Abstract translation: 一种用于处理死亡正弦曲线和一般持续正弦曲线的音频编码方法和装置以及音频解码方法和装置。 使用死亡正弦曲线的独特特征，因为死亡正弦曲线具有使得死亡正弦曲线的幅度分量小于先前正弦曲线的幅度分量的趋势，一种通过将一般的连续正弦曲线与 提供死亡正弦曲线。 也就是说，当执行死亡正弦曲线的振幅分量的差分编码时，当编码负数时使用的位数小于霍夫曼表中正数编码时所使用的位数。 通过使用该方法，整个编码中的比特率降低。

公开(公告)号：US20080189120A1

公开(公告)日：2008-08-07

申请号：US12021760

申请日：2008-01-29

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: G10L19/025

Abstract: A method of and apparatus for parametric encoding and parametric decoding are provided. According to the method and apparatus, not all parameters for all component signals are generated and according to a time interval, parameters for some component signals are replaced by index information allowing similar previous time intervals to be found, thereby increasing encoding efficiency.

Abstract translation: 提供了一种用于参数编码和参数解码的方法和装置。 根据该方法和装置，不是产生所有分量信号的所有参数，并且根据时间间隔，一些分量信号的参数由索引信息代替，允许找到相似的先前时间间隔，从而提高编码效率。

公开(公告)号：US20130051474A1

公开(公告)日：2013-02-28

申请号：US13594953

申请日：2012-08-27

Applicant: Seung-gu KIM ,  Geon-hyoung LEE ,  Se-hyeok PARK ,  Tae-gyoung AHN

Inventor： Seung-gu KIM ,  Geon-hyoung LEE ,  Se-hyeok PARK ,  Tae-gyoung AHN

IPC: H04N7/32

CPC classification number: H04N19/428 ,  H04N19/124 ,  H04N19/132 ,  H04N19/167 ,  H04N19/182 ,  H04N19/34 ,  H04N19/50

Abstract: A method and apparatus for encoding an image, and a method and apparatus for decoding an image. The method of encoding an image includes: classifying pixels forming an input image into a first pixel group in which bit depth of original pixel values is maintained, and a second pixel group in which bit depth of original pixel values is changed; generating a changed input image by changing the bit depth of pixel values of pixels in the second pixel group; and performing motion prediction and compensation on the changed input image.

Abstract translation: 用于编码图像的方法和装置，以及用于对图像进行解码的方法和装置。 编码图像的方法包括：将形成输入图像的像素分类为保持原始像素值的位深度的第一像素组，以及改变原始像素值的位深度的第二像素组; 通过改变第二像素组中像素的像素值的位深度来生成改变的输入图像; 并对改变的输入图像执行运动预测和补偿。

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。