公开(公告)号：US20090228284A1

公开(公告)日：2009-09-10

申请号：US12397505

申请日：2009-03-04

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: G10L19/035

Abstract: A method and apparatus for encoding a multi-channel audio signal is provided. The method includes the operations of selecting a first variable length code table (VLC) that is to be used to encode the multi-channel audio signal in a given frequency band, from among a plurality of VLC tables, and encoding the multi-channel audio signal by using the first VLC table. Thus, the multi-channel audio signal can be encoded by using VLC tables that differ according to frequency bands.

Abstract translation: 提供了一种用于对多声道音频信号进行编码的方法和装置。 该方法包括从多个VLC表中选择要用于对给定频带中的多声道音频信号进行编码的第一可变长度码表（VLC）和对多声道音频进行编码的操作 信号通过使用第一个VLC表。 因此，可以通过使用根据频带而不同的VLC表来编码多声道音频信号。

公开(公告)号：US20090198489A1

公开(公告)日：2009-08-06

申请号：US12363937

申请日：2009-02-02

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

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

IPC: G10L19/00

CPC classification number: G10L19/093

Abstract: Provided are a method and apparatus for encoding the frequency of a continuation sinusoidal signal and a method and apparatus for decoding the same. In the encoding method, a continuation sinusoidal signal successive to a sinusoidal signal in a previous section is extracted from a current section; a frequency of the continuation sinusoidal signal at the boundary between the current and previous sections is changed to a first frequency, based on representative frequencies of the continuation sinusoidal signal and at least one sinusoidal signal that belongs to a section adjacent to the current section and is successive to the continuation sinusoidal signal; and the first frequency is encoded.

Abstract translation: 提供一种用于对连续正弦信号的频率进行编码的方法和装置，以及用于对其进行解码的方法和装置。 在编码方法中，从当前部分提取与前一部分中的正弦信号连续的连续正弦信号; 基于连续正弦信号的代表频率和属于与当前部分相邻的部分的至少一个正弦信号，在当前部分和前一部分之间的边界处的连续正弦信号的频率被改变为第一频率，并且是 连续的正弦信号; 并且第一频率被编码。

公开(公告)号：US20090048826A1

公开(公告)日：2009-02-19

申请号：US12131446

申请日：2008-06-02

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

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

IPC: G10L19/00

CPC classification number: G10L19/093

Abstract: Provided are an encoding method and apparatus for efficiently encoding a sinusoidal signal whose magnitude is less than a masking value according to a psychoacoustic model, a decoding method and apparatus for decoding an encoded sinusoidal signal, and a computer-readable recording medium having recorded thereon a program for executing the encoding method/the decoding method. By using a particular code indicating that the magnitude of a first sinusoidal signal is less than a masking value according to a psychoacoustic model to encode the first sinusoidal signal, difference coding for a third sinusoidal signal of a next frame, which is connected to the first sinusoidal signal, is performed using a sinusoidal signal or sinusoidal signals selected according to a method to use the particular code, and a decoding apparatus obtains a sum with a transmitted difference using the selected sinusoidal signal(s).

Abstract translation: 提供了一种编码方法和装置，用于根据心理声学模型有效地编码其幅度小于掩蔽值的正弦信号，用于对编码的正弦信号进行解码的解码方法和装置，以及在其上记录有编码的正弦信号的计算机可读记录介质 用于执行编码方法/解码方法的程序。 通过使用指示第一正弦信号的幅度小于根据心理声学模型编码第一正弦信号的屏蔽值的特定码，对于连接到第一正弦信号的下一帧的第三正弦信号的差编码 使用根据使用特定码的方法选择的正弦信号或正弦信号来执行正弦信号，并且解码装置使用所选择的正弦信号来获得具有发送差的和。

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：US20090192792A1

公开(公告)日：2009-07-30

申请号：US12361999

申请日：2009-01-29

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

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

IPC: G10L19/00

CPC classification number: G10L19/083

Abstract: Provided are methods and apparatuses for more efficiently encoding and decoding a high frequency band signal which is from an audio signal and which is greater than a predetermined threshold frequency. The method and apparatus for encoding the audio signal encodes a linear prediction coding (LPC) coefficient and gain information of a residual signal, which are generated by performing LPC analysis, thereby encoding a high frequency signal so as to have enhanced sound quality, while using less bits.

Abstract translation: 提供了用于更有效地编码和解码来自音频信号并且大于预定阈值频率的高频带信号的方法和装置。 用于对音频信号进行编码的方法和装置对通过执行LPC分析而产生的残差信号的线性预测编码（LPC）系数和增益信息进行编码，从而对高频信号进行编码以便具有增强的声音质量，同时使用 少位

公开(公告)号：US20090192789A1

公开(公告)日：2009-07-30

申请号：US12362060

申请日：2009-01-29

Applicant: Geon-hyoung LEE ,  Chul-woo Lee ,  Jong-hoon Jeong ,  Nam-suk Lee ,  Han-gil Moon

Inventor： Geon-hyoung LEE ,  Chul-woo Lee ,  Jong-hoon Jeong ,  Nam-suk Lee ,  Han-gil Moon

IPC: G10L11/04 ,  G10L19/04

CPC classification number: G10L19/0204 ,  G10L19/093

Abstract: Provided are a method and apparatus for effectively encoding/decoding remaining difference signals excluding sinusoidal components, from input audio signals. In the method and apparatus for encoding audio signals, sinusoidal analysis is performed on low frequency signals of less than a predetermined critical frequency in order to extract sinusoidal signals and then, an encoding operation is performed on the remaining difference signals excluding the sinusoidal signals, from input audio signals, by using linear prediction coding (LPC) analysis.

Abstract translation: 提供了一种用于从输入音频信号有效地编码/解码除了正弦分量的剩余差分信号的方法和装置。 在用于编码音频信号的方法和装置中，对小于预定临界频率的低频信号执行正弦分析，以便提取正弦信号，然后对不包括正弦信号的剩余差信号执行编码操作， 输入音频信号，通过使用线性预测编码（LPC）分析。

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：US20080189119A1

公开(公告)日：2008-08-07

申请号：US12026733

申请日：2008-02-06

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: G10L19/26 ,  G10L19/0204 ,  G10L21/0364 ,  H03G5/005

Abstract: A method of implementing an equalizer in an audio signal decoder and an apparatus therefor are provided. According to the method and apparatus, a signal output from an audio signal decoder is not processed by an equalizer, but the values of frequency components are adjusted according to a user's input before subband sample data is transformed into a frequency domain signal in an audio signal decoder, thereby implementing an equalizer in a codec. In this way, the complexity of implementing an apparatus for reproducing an audio signal can be reduced and delay of an equalizer can be reduced.

Abstract translation: 提供了一种在音频信号解码器及其装置中实现均衡器的方法。 根据该方法和装置，由音频信号解码器输出的信号不由均衡器处理，但是在将子带采样数据变换成音频信号中的频域信号之前，根据用户的输入来调整频率分量的值 解码器，从而在编解码器中实现均衡器。 以这种方式，可以减少实现用于再现音频信号的装置的复杂性，并且可以减小均衡器的延迟。