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1. 发明申请

US20080312912A1 AUDIO SIGNAL ENCODING/DECODING METHOD AND APPARATUS 失效
标题翻译：音频信号编码/解码方法和装置
公开(公告)号：US20080312912A1
公开(公告)日：2008-12-18
申请号：US11867218
申请日：2007-10-04
申请人： Ki-hyun CHOO , Eun-mi OH , Jung-hoe Kim , Konstantin Osipov , Sergey Petrov
发明人： Ki-hyun CHOO , Eun-mi OH , Jung-hoe Kim , Konstantin Osipov , Sergey Petrov
IPC分类号： G10L19/02
CPC分类号： G10L21/038 , G10L19/008 , G10L19/0212 , G10L19/24
摘要： Provided is an audio signal encoding method including transforming an input signal from a time domain to a time/frequency domain using a first transformation method, extracting a stereo parameter from a signal of the time/frequency domain, encoding the stereo parameter, and down-mixing the signal of the time/frequency domain, transforming each of sub-bands of the down-mixed signal to a frequency domain by using a second transformation method, and encoding the signal of the frequency domain in the frequency domain.
摘要翻译：提供了一种音频信号编码方法，包括使用第一变换方法将输入信号从时域变换为时域/频域，从时域/频域的信号中提取立体声参数，对立体声参数进行编码，混合时间/频域的信号，通过使用第二变换方法将下混合信号的每个子频带变换为频域，并对频域中的频域的信号进行编码。

2. 发明申请

US20120294448A1 METHOD, MEDIUM, AND SYSTEM ENCODING/DECODING MULTI-CHANNEL SIGNAL 有权
公开(公告)号：US20120294448A1
公开(公告)日：2012-11-22
申请号：US13563808
申请日：2012-08-01
申请人： Jung-hoe KIM , Eun-mi OH , Konstantin OSIPOV , Ki-hyun CHOO
发明人： Jung-hoe KIM , Eun-mi OH , Konstantin OSIPOV , Ki-hyun CHOO
IPC分类号： H04R5/00
CPC分类号： H04H40/36 , G10L19/008 , H04H20/47 , H04H20/88
摘要： A multi-channel signal decoding method is provided. A down-mixed signal representative of a multi-channel signal is decoded, and parameters representing characteristic relations between channels of the multi-channel signal are decoded. An additional parameter is estimated by using the decoded parameters, and the decoded down-mixed signal is up-mixed by using the decoded parameters and the estimated parameter so as to decode the multi-channel signal.

3. 发明申请

US20140149125A1 METHOD AND APPARATUS FOR ADAPTIVELY ENCODING AND DECODING HIGH FREQUENCY BAND 审中-公开
公开(公告)号：US20140149125A1
公开(公告)日：2014-05-29
申请号：US13686015
申请日：2012-11-27
申请人： Chang-yong SON , Eun-mi OH , Ki-hyun CHOO , Jung-hoe KIM
发明人： Chang-yong SON , Eun-mi OH , Ki-hyun CHOO , Jung-hoe KIM
IPC分类号： G10L21/00
CPC分类号： G10L21/038 , G10L19/0204 , G10L19/08 , G10L21/00
摘要： Provided are a method and apparatus for encoding and decoding an audio signal. According to the present application, a signal of a high frequency band above a preset frequency band is adaptively encoded or decoded in the time domain or in the frequency domain by using a signal of a low frequency band below the preset frequency band. As such, the sound quality of a high frequency signal is not deteriorate even when an audio signal is encoded or decoded by using a small number of bits and thus coding efficiency may be maximized.

4. 发明申请

US20080281604A1 METHOD AND APPARATUS TO ENCODE AND DECODE AN AUDIO SIGNAL 审中-公开
标题翻译：编码和解码音频信号的方法和设备
公开(公告)号：US20080281604A1
公开(公告)日：2008-11-13
申请号：US11956690
申请日：2007-12-14
申请人： Ki-hyun CHOO , Anton Porov , Eun-mi Oh , Jung-hoe Kim
发明人： Ki-hyun CHOO , Anton Porov , Eun-mi Oh , Jung-hoe Kim
IPC分类号： G10L19/00
CPC分类号： G10L19/0208 , G10L19/093 , G10L19/18
摘要： A method and apparatus to encode and decode an audio signal. In the encoding method and apparatus, one or more important frequency components may be detected from an audio signal, the frequency components may be encoded, and then an envelope of the audio signal may be encoded. In the decoding method and apparatus, an audio signal may be decoded by adjusting envelopes at one or more bands containing one or more important frequency components in consideration of the energy values of the frequency components. Accordingly, it is possible to maximize the coding efficiency without degrading the sound quality of the audio signal even if the audio signal is encoded or decoded using a small amount of bits.
摘要翻译：一种对音频信号进行编码和解码的方法和装置。在编码方法和装置中，可以从音频信号检测一个或多个重要的频率分量，可以对频率分量进行编码，然后对音频信号的包络进行编码。在解码方法和装置中，考虑到频率分量的能量值，可以通过调整包含一个或多个重要频率分量的一个或多个频带的信封来解码音频信号。因此，即使音频信号使用少量的比特进行编码或解码，也可以使编码效率最大化而不降低音频信号的声音质量。

5. 发明申请

US20090110208A1 APPARATUS, MEDIUM AND METHOD TO ENCODE AND DECODE HIGH FREQUENCY SIGNAL 有权
标题翻译：装置，介质和编码和解码高频信号的方法
公开(公告)号：US20090110208A1
公开(公告)日：2009-04-30
申请号：US12256704
申请日：2008-10-23
申请人： Ki-hyun CHOO , Eun-mi Oh , Ho-sang Sung , Jung-hoe Kim , Mi-young Kim
发明人： Ki-hyun CHOO , Eun-mi Oh , Ho-sang Sung , Jung-hoe Kim , Mi-young Kim
IPC分类号： H03B29/00
CPC分类号： G10L25/93 , G10L21/038
摘要： A method and apparatus to encoding or decoding an audio signal is provided. In the method and apparatus, a noise-floor level to use in encoding or decoding a high frequency signal is updated according to the degree of a voiced or unvoiced sound included in the signal.
摘要翻译：提供了一种对音频信号进行编码或解码的方法和装置。在该方法和装置中，根据信号中包含的有声或无声音的程度来更新用于对高频信号进行编码或解码的噪声底层电平。

6. 发明申请

US20120116757A1 METHOD AND APPARATUS FOR ENCODING AND DECODING HIGH FREQUENCY SIGNAL 有权
标题翻译：编码和解码高频信号的方法和装置
公开(公告)号：US20120116757A1
公开(公告)日：2012-05-10
申请号：US13354749
申请日：2012-01-20
申请人： Ki-hyun CHOO , Lei Miao , Eun-mi Oh
发明人： Ki-hyun CHOO , Lei Miao , Eun-mi Oh
IPC分类号： G10L19/00
CPC分类号： G10L19/06 , G10L19/02 , G10L19/0208 , G10L19/04 , G10L19/07 , G10L19/167 , G10L21/038 , G10L25/12 , G10L25/21 , G10L25/90
摘要： Provided are a method and apparatus for encoding and decoding a high frequency signal by using a low frequency signal. The high frequency signal can be encoded by extracting a coefficient by linear predicting a high frequency signal, and encoding the coefficient, generating a signal by using the extracted coefficient and a low frequency signal, and encoding the high frequency signal by calculating a ratio between the high frequency signal and an energy value of the generated signal. Also, the high frequency signal can be decoded by decoding a coefficient, which is extracted by linear predicting a high frequency signal, and a low frequency signal, and generating a signal by using the decoded coefficient and the decoded low frequency signal, and adjusting the generated signal by decoding a ratio between the generated signal and an energy value of the high frequency signal.
摘要翻译：提供了一种通过使用低频信号对高频信号进行编码和解码的方法和装置。高频信号可以通过线性预测高频信号提取系数进行编码，并对该系数进行编码，通过使用提取的系数和低频信号产生信号，并通过计算高频信号之间的比率来对高频信号进行编码高频信号和产生的信号的能量值。此外，可以通过对通过线性预测高频信号提取的系数和低频信号进行解码来解码高频信号，并且通过使用解码的系数和解码的低频信号来生成信号，并且调整通过解码所生成的信号与高频信号的能量值之间的比率来产生信号。

7. 发明申请

US20080270125A1 METHOD AND APPARATUS FOR ENCODING AND DECODING HIGH FREQUENCY BAND 有权
标题翻译：编码和解码高频带的方法和装置
公开(公告)号：US20080270125A1
公开(公告)日：2008-10-30
申请号：US11877015
申请日：2007-10-23
申请人： Ki-hyun CHOO , Anton POROV , Eun-mi OH , Jung-hoo KIM
发明人： Ki-hyun CHOO , Anton POROV , Eun-mi OH , Jung-hoo KIM
IPC分类号： G10L19/14
CPC分类号： G10L19/0204 , G10L21/038
摘要： Provided is a method and apparatus for encoding or decoding a signal corresponding to a high frequency band in an audio signal. The method and apparatus for encoding a high frequency band detects and encodes frequency component(s) according to a pre-set criterion from a signal corresponding to a frequency band higher than a pre-set frequency and encodes energy value(s) of a signal to reconstruct band(s) in which the detected frequency component(s) are included. The method and apparatus for decoding a high frequency band decodes the signal by adjusting a signal to reconstruct a band in which important frequency component(s) are included by considering an energy value of the important frequency component(s). Accordingly, even though encoding or decoding is performed using a small number of bits, there is no degradation in sound quality of a signal corresponding to a high frequency band, and thus coding efficiency can be maximized.
摘要翻译：提供了一种用于对与音频信号中的高频带相对应的信号进行编码或解码的方法和装置。用于编码高频带的方法和装置根据来自对应于高于预定频率的频带的信号的预设标准来检测和编码频率分量，并对信号的能量值进行编码以重建其中包括检测到的频率分量的频带。用于解码高频带的方法和装置通过调整信号来重构信号，以通过考虑重要频率分量的能量值来重构其中包括重要频率分量的频带。因此，即使使用少量的比特来进行编码或解码，也不会使与高频带对应的信号的声音质量下降，能够最大化编码效率。

8. 发明申请

US20070282599A1 METHOD AND APPARATUS TO ENCODE AND/OR DECODE SIGNAL USING BANDWIDTH EXTENSION TECHNOLOGY 有权
标题翻译：使用带宽扩展技术编码和/或解码信号的方法和装置
公开(公告)号：US20070282599A1
公开(公告)日：2007-12-06
申请号：US11757528
申请日：2007-06-04
申请人： Ki-hyun CHOO , Jung-hoe Kim , Eun-ml Oh , Mino Lei , Chang-yong Son
发明人： Ki-hyun CHOO , Jung-hoe Kim , Eun-ml Oh , Mino Lei , Chang-yong Son
IPC分类号： G10L19/14
CPC分类号： G10L19/0208 , G10L21/038
摘要： A method and apparatus to perform bandwidth extension encoding and decoding encodes and/or decodes a high frequency signal using an excitation signal for a low frequency signal encoded in a time domain or a frequency domain or using an excitation spectrum for the low frequency signal. Accordingly, although an audio signal is encoded or decoded using a small number of bits, the quality of sound corresponding to a signal in a high frequency band does not degrade. Therefore, a coding efficiency of the audio signal can be maximized.
摘要翻译：执行带宽扩展编码和解码的方法和装置使用用于在时域或频域中编码的低频信号的激励信号或者使用低频信号的激励频谱对高频信号进行编码和/或解码。因此，尽管使用少量的比特对音频信号进行编码或解码，但是与高频带中的信号相对应的声音质量不会降低。因此，可以使音频信号的编码效率最大化。

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