公开(公告)号：US20090024396A1

公开(公告)日：2009-01-22

申请号：US12028017

申请日：2008-02-08

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

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

IPC分类号： G10L19/00

CPC分类号： G10L19/093

摘要： An audio signal encoding method and apparatus for efficiently encoding an audio signal in an interval having many birth sinusoids and enabling tracking of sinusoidal signals in the next interval, and a computer readable recording medium having embodied thereon a computer program for executing the audio signal encoding method are provided. According to the method and apparatus, by applying transform coding instead of parametric coding to a frame having many birth sinusoids, the sinusoids are encoded, thereby reducing the number of bits required for the encoding and enabling efficient coding. Also, when transform coding is applied to a frame of a predetermined interval, an inverse transform of the transform coding is applied to the encoded data in order to decode the data, and then sinusoids are extracted from the decoded data, thereby enabling tracking of sinusoids of the next frame.

摘要翻译： 一种音频信号编码方法和装置，用于在具有许多诞生正弦曲线的间隔中有效地对音频信号进行编码，并且能够在下一个间隔中跟踪正弦信号;以及计算机可读记录介质，其中具有用于执行音频信号编码方法的计算机程序 被提供。 根据该方法和装置，通过将变换编码代替参数编码应用于具有许多出生正弦曲线的帧，对正弦曲线进行编码，从而减少编码所需的比特数并使得能够进行有效的编码。 此外，当将变换编码应用于预定间隔的帧时，将变换编码的逆变换应用于编码数据，以对数据进行解码，然后从解码数据中提取正弦曲线，从而能够跟踪正弦曲线 的下一帧。

公开(公告)号：US20080255855A1

公开(公告)日：2008-10-16

申请号：US11952547

申请日：2007-12-07

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

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

IPC分类号： G10L19/00

CPC分类号： G10L19/035 ,  G10L19/093

摘要： Provided are a method and apparatus for coding and decoding an amplitude of partials, in which a step phenomenon can be prevented in the result of coding the amplitude of continuation partial partials in a parametric codec, thereby improving reproduced sound quality. The method of coding the amplitude of partials includes obtaining an inversely quantized amplitude of partials of a previous frame, determining a quantization level based on a function for the inversely quantized amplitude of the partials of the previous frame, and quantizing an amplitude of partials of a current frame based on the determined quantization level.

摘要翻译： 提供了一种用于编码和解码部分幅度的方法和装置，其中在参数编解码器中对连续部分部分的幅度进行编码的结果中可以防止步进现象，从而改善再现的音质。 编码部分幅度的方法包括获得前一帧的部分的逆量化幅度，基于前一帧的部分的逆量化幅度的函数确定量化级，以及量化幅度的部分的幅度 基于所确定的量化级别的当前帧。

公开(公告)号：US08019616B2

公开(公告)日：2011-09-13

申请号：US11962174

申请日：2007-12-21

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

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

IPC分类号： G10L21/04

CPC分类号： G10L19/20 ,  G10L19/0204

摘要： 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.

摘要翻译： 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：US20080189118A1

公开(公告)日：2008-08-07

申请号：US12024381

申请日：2008-02-01

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

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

IPC分类号： G10L19/00

CPC分类号： G10L19/0212 ,  G10L19/022

摘要： An audio encoding and decoding apparatus and a method thereof, capable of improving compression efficiency, by using coefficients that are stable over a period of time and in a range of frequency bands, are provided. The audio encoding method divides an input audio signal into frames having lengths different from each other; obtaining at least one magnitude in relation to each of the frames having different lengths; and encoding the magnitude. The audio decoding method separates at least one encoded magnitude in relation to each of frames having different lengths, based on the frame length; decoding each of the separated encoded magnitudes; and restoring an audio signal by using the decoded magnitude.

摘要翻译： 提供一种能够通过使用在一段时间内和频带范围内稳定的系数来提高压缩效率的音频编码和解码装置及其方法。 音频编码方法将输入音频信号分成具有彼此不同长度的帧; 相对于具有不同长度的每个帧获得至少一个幅度; 并编码大小。 音频解码方法基于帧长度分离与每个具有不同长度的帧相关联的编码幅度; 解码每个分离的编码幅度; 并通过使用解码的幅度恢复音频信号。

公开(公告)号：US20080189117A1

公开(公告)日：2008-08-07

申请号：US12017422

申请日：2008-01-22

申请人： Jae-one OH ,  Geon-hyoung Lee ,  Chul-woo Lee ,  Jong-hoon Jeong ,  Nam-suk Lee

发明人： Jae-one OH ,  Geon-hyoung Lee ,  Chul-woo Lee ,  Jong-hoon Jeong ,  Nam-suk Lee

IPC分类号： G10L19/00

CPC分类号： G10L19/093

摘要： A method and apparatus for decoding a parametric-encoded audio signal are provided. According to the present invention, parameters extracted from a bitstream of a parametric encoded audio signal are adjusted by a user and component signals are synthesized based on the adjusted parameters to be displayed to a user so that a user can adjust the amplitudes of the component signals to apply various sound effects according to the user's desire. In addition, since an equalizer function is embodied in a codec of an audio reproduction apparatus, additional equalizer modules are not required and thus complexity of the audio reproduction apparatus can be reduced.

摘要翻译： 提供了一种用于解码参数编码音频信号的方法和装置。 根据本发明，由参数编码的音频信号的比特流提取的参数由用户调整，并且分量信号基于被调整的参数被合成以被显示给用户，使得用户可以调整分量信号的幅度 根据用户的需要应用各种音效。 此外，由于在音频再现装置的编解码器中实现均衡器功能，因此不需要附加的均衡器模块，因此可以减少音频再现装置的复杂性。

公开(公告)号：US08296137B2

公开(公告)日：2012-10-23

申请号：US11952547

申请日：2007-12-07

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

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

IPC分类号： G10L19/00

CPC分类号： G10L19/035 ,  G10L19/093

摘要： Provided are a method and apparatus for coding and decoding an amplitude of partials, in which a step phenomenon can be prevented in the result of coding the amplitude of continuation partial partials in a parametric codec, thereby improving reproduced sound quality. The method of coding the amplitude of partials includes obtaining an inversely quantized amplitude of partials of a previous frame, determining a quantization level based on a function for the inversely quantized amplitude of the partials of the previous frame, and quantizing an amplitude of partials of a current frame based on the determined quantization level.

摘要翻译： 提供了一种用于对部分幅度进行编码和解码的方法和装置，其中在参数编解码器中对连续部分部分的幅度进行编码的结果中可以防止步进现象，从而改善再现的音质。 编码部分幅度的方法包括获得前一帧的部分的逆量化幅度，基于前一帧的部分的逆量化幅度的函数确定量化级，以及量化幅度的部分的幅度 基于所确定的量化级别的当前帧。

公开(公告)号：US08290770B2

公开(公告)日：2012-10-16

申请号：US12026066

申请日：2008-02-05

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

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

IPC分类号： G10L19/14

CPC分类号： G10L19/093

摘要： 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.

摘要翻译： 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：US20080228500A1

公开(公告)日：2008-09-18

申请号：US12015698

申请日：2008-01-17

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

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

IPC分类号： G10L19/00

CPC分类号： G10L19/0208 ,  G10L19/028

摘要： 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.

摘要翻译： 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：US08725519B2

公开(公告)日：2014-05-13

申请号：US11954286

申请日：2007-12-12

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

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

IPC分类号： G01L19/00 ,  G01L21/00

CPC分类号： G10L19/093 ,  G10L19/0212

摘要： Provided are audio encoding and decoding apparatuses capable of recovering a high-quality audio signal at a low bit rate. The audio encoding method includes: detecting at least one sinusoidal wave from an input audio signal; calculating components of additional basis vectors based on residual audio signals and the additional basis vectors of the sinusoidal wave; determining transmission of components of the additional basis vectors; and at least one of (a) encoding frequencies and (b) phases and amplitudes of the sinusoidal waves when the transmission of the components of the additional basis vectors are determined, wherein the residual audio signals are obtained by excluding the detected sinusoidal waves from the input audio signal.

摘要翻译： 提供能够以低比特率恢复高质量音频信号的音频编码和解码装置。 音频编码方法包括：从输入音频信号中检测至少一个正弦波; 基于剩余音频信号和正弦波的附加基矢量来计算附加基矢量的分量; 确定附加基本向量的分量的传输; 并且当确定附加基矢量的分量的传输时，（a）编码频率和（b）正弦波的相位和振幅中的至少一个，其中残留音频信号是通过将检测到的正弦波从 输入音频信号。

公开(公告)号：US08000975B2

公开(公告)日：2011-08-16

申请号：US12017422

申请日：2008-01-22

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

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

IPC分类号： G10L19/00

CPC分类号： G10L19/093

摘要： A method and apparatus for decoding a parametric-encoded audio signal are provided. According to the present invention, parameters extracted from a bitstream of a parametric encoded audio signal are adjusted by a user and component signals are synthesized based on the adjusted parameters to be displayed to a user so that a user can adjust the amplitudes of the component signals to apply various sound effects according to the user's desire. In addition, since an equalizer function is embodied in a codec of an audio reproduction apparatus, additional equalizer modules are not required and thus complexity of the audio reproduction apparatus can be reduced.

摘要翻译： 提供了一种用于解码参数编码音频信号的方法和装置。 根据本发明，由参数编码的音频信号的比特流提取的参数由用户调整，并且分量信号基于被调整的参数被合成以被显示给用户，使得用户可以调整分量信号的幅度 根据用户的需要应用各种音效。 此外，由于在音频再现装置的编解码器中实现均衡器功能，因此不需要附加的均衡器模块，因此可以减少音频再现装置的复杂性。