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：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：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。

公开(公告)号：US08055506B2

公开(公告)日：2011-11-08

申请号：US12023410

申请日：2008-01-31

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： G10L11/04

CPC分类号： G10L19/093

摘要： 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.

摘要翻译： 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

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： G10L19/02 ,  G10L11/04

CPC分类号： G10L19/093

摘要： 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.

摘要翻译： 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。

公开(公告)号：US20080235033A1

公开(公告)日：2008-09-25

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： G10L19/00

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。