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：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：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：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：US20080235033A1

公开(公告)日：2008-09-25

申请号：US11962174

申请日：2007-12-21

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: G10L19/20 ,  G10L19/0204

Abstract: Methods and apparatuses for encoding and decoding of an audio signal using a mixture of a time-frequency method and a parametric method according to the audio band are provided. An encoding method of an audio signal includes: dividing input audio signals into a plurality of audio bands; selecting a coding method for each audio band; encoding each audio band according to the selected coding method for each band; and generating a bit stream including all the data encoded for each audio band, wherein selecting a coding method for each band comprises selecting smaller encoded data either from a parametric coding method or a time-frequency coding method.

Abstract translation: 提供了使用根据音频带的时频方法和参数方法的混合来对音频信号进行编码和解码的方法和装置。 音频信号的编码方法包括：将输入音频信号划分为多个音频频带; 选择每个音频带的编码方法; 根据所选择的每个频带的编码方法对每个音频频带进行编码; 并且生成包括针对每个音频频带编码的所有数据的比特流，其中为每个频带选择编码方法包括从参数编码方法或时间 - 频率编码方法中选择较小的编码数据。

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：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。