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1. 发明授权

US08983830B2 Stereo signal encoding device including setting of threshold frequencies and stereo signal encoding method including setting of threshold frequencies 有权
标题翻译：立体声信号编码装置，包括阈值频率的设定和立体声信号编码方法，包括设定阈值频率
公开(公告)号：US08983830B2
公开(公告)日：2015-03-17
申请号：US12593033
申请日：2008-03-28
申请人： Jiong Zhou , Kok Seng Chong , Koji Yoshida
发明人： Jiong Zhou , Kok Seng Chong , Koji Yoshida
IPC分类号： G10L19/00 , G10L19/06 , G10L19/24 , G10L19/008
CPC分类号： G10L19/24 , G10L19/00 , G10L19/008 , G10L19/06
摘要： An encoding device can achieve both highly effective encoding/decoding and high-quality decoding audio when executing a scalable stereo audio encoding by using MDCT and ICP. In the encoding device, an MDCT converter executes an MDCT conversion on a residual signal of left channel/right channel subjected to window processing. An MDCT converter executes an MDCT conversion on the monaural residual signal which has been subjected to the window processing. An ICP analyzer executes an ICP analysis by using the correlation between a frequency coefficient of a high-band portion of the left channel/right channel and a frequency coefficient of a high-band portion of the monaural residual signal so as to generate an ICP parameter of the left channel/right channel residual signal. An ICP parameter quantizes each of the ICP parameters. A low-band encoding unit encoder executes highly-accurate encoding on the frequency coefficient of the low-band portion of the left channel/right channel residual signal.
摘要翻译：通过使用MDCT和ICP执行可伸缩的立体声音频编码，编码装置可以实现高效编码/解码和高质量的解码音频。在编码装置中，MDCT转换器对经过窗口处理的左声道/右声道的残留信号执行MDCT转换。 MDCT转换器对经过窗口处理的单声道残差信号执行MDCT转换。 ICP分析仪通过使用左声道/右声道的高频带部分的频率系数与单声道残留信号的高频带部分的频率系数之间的相关性来执行ICP分析，以产生ICP参数的左声道/右声道残留信号。 ICP参数量化每个ICP参数。低频编码单元编码器对左声道/右声道残留信号的低频带部分的频率系数执行高精度编码。

2. 发明申请

US20100106493A1 ENCODING DEVICE AND ENCODING METHOD 有权
标题翻译：编码设备和编码方法
公开(公告)号：US20100106493A1
公开(公告)日：2010-04-29
申请号：US12593033
申请日：2008-03-28
申请人： Jiong Zhou , Kok Seng Chong , Koji Yoshida
发明人： Jiong Zhou , Kok Seng Chong , Koji Yoshida
IPC分类号： G10L19/00
CPC分类号： G10L19/24 , G10L19/00 , G10L19/008 , G10L19/06
摘要： Provided is an encoding device which can achieve both of highly effective encoding/decoding and high-quality decoding audio when executing a scalable stereo audio encoding by using MDCT and ICP. In the encoding device, an MDCT conversion unit (111) executes an MDCT conversion on a residual signal of left channel/right channel subjected to window processing. An MDCT conversion unit (112) executes an MDCT conversion on the monaural residual signal which has been subjected to the window processing. An ICP analysis unit (117) executes an ICP analysis by using the correlation between a frequency coefficient of a high-band portion of the left channel/right channel and a frequency coefficient of a high-band portion of the monaural residual signal so as to generate an ICP parameter of the left channel/right channel residual signal. An ICP parameter quantization unit (118) quantizes each of the ICP parameters. A low-band encoding unit (119) executes highly-accurate encoding on the frequency coefficient of the low-band portion of the left channel/right channel residual signal.
摘要翻译：提供了一种编码装置，其可以通过使用MDCT和ICP执行可伸缩的立体声音频编码时能够实现高效编码/解码和高质量的解码音频。在编码装置中，MDCT转换单元（111）对经过窗口处理的左声道/右声道的残留信号执行MDCT转换。 MDCT转换单元（112）对经过窗口处理的单声道残差信号执行MDCT转换。 ICP分析单元（117）通过使用左声道/右声道的高频带部分的频率系数与单声道残留信号的高频带部分的频率系数之间的相关性来执行ICP分析，从而生成左声道/右声道残留信号的ICP参数。 ICP参数量化单元（118）对每个ICP参数进行量化。低频编码单元（119）对左声道/右声道残留信号的低频带部分的频率系数执行高精度编码。

3. 发明申请

US20100100372A1 STEREO ENCODING DEVICE, STEREO DECODING DEVICE, AND THEIR METHOD 审中-公开
标题翻译：立体声编码装置，立体声解码装置及其方法
公开(公告)号：US20100100372A1
公开(公告)日：2010-04-22
申请号：US12524453
申请日：2008-01-25
申请人： Jiong Zhou , Kok Seng Chong
发明人： Jiong Zhou , Kok Seng Chong
IPC分类号： G10L19/00 , G10L21/04
CPC分类号： G10L19/008 , H04S1/00 , H04S2420/03
摘要： Disclosed is a stereo encoding device which can improve critical channel encoding accuracy without increasing the encoding information amount. The device includes: a monaural signal synthesis unit (101) which combines a left channel signal L(n) and a right channel signal R(n) so as to generate a monaural signal M(n); a correlation coefficient calculation unit (102) which calculates a correlation coefficient CML between M(n) and L(n) and a correlation coefficient CMR between M(n) and R(n); a critical channel judging unit (103) which decides one of the L(n) and R(n) having a smaller correlation with M(n) as the critical channel if the ratio of CML against CMR is not within a predetermined range from 90% to 111%, for example; and an ICP encoding unit (104) which performs ICP encoding by adjusting the degree of the ICP parameter of the critical channel to be higher than the degree of the ICP parameter of the non-critical channel.
摘要翻译：公开了一种可以在不增加编码信息量的情况下提高关键信道编码精度的立体声编码装置。该装置包括：组合左声道信号L（n）和右声道信号R（n）的单声道信号合成单元（101），以便产生单声道信号M（n）; 计算M（n）和L（n）之间的相关系数CML以及M（n）和R（n）之间的相关系数CMR的相关系数计算单元（102）。如果CML与CMR的比率不在90°的预定范围内，则决定与M（n）具有较小相关性的L（n）和R（n）中的一个作为关键信道的关键信道判断单元（103）％〜111％; 以及通过将关键通道的ICP参数的程度调整为高于非关键通道的ICP参数的程度来执行ICP编码的ICP编码单元（104）。

4. 发明申请

US20090299734A1 STEREO AUDIO ENCODING DEVICE, STEREO AUDIO DECODING DEVICE, AND METHOD THEREOF 有权
标题翻译：立体声音频编码装置，立体声音频解码装置及其方法
公开(公告)号：US20090299734A1
公开(公告)日：2009-12-03
申请号：US12376000
申请日：2007-08-02
申请人： Jiong Zhou , Kok Seng Chong
发明人： Jiong Zhou , Kok Seng Chong
IPC分类号： G10L21/00
CPC分类号： G10L19/008 , H04S1/007
摘要： Disclosed is a stereo audio encoding device capable of improving a spatial image of a decoded audio in stereo audio encoding. In this device, an original cross correlation calculation unit (101) calculates a mutual relationship coefficient (C1) between the original L channel signal and the original R channel signal. A stereo audio reconfiguration unit (104) subjects the inputted L channel signal and the R channel signal to encoding and decoding so as to generate an L channel reconfigured signal (L′) and an R channel reconfigured signal (R′). A reconfiguration cross correlation calculation unit (105) calculates a cross correlation coefficient (C2) between the L channel reconfigured signal (L′) and the R channel reconfigured signal (R′). A cross correlation comparison unit (106) calculates and outputs a comparison result &agr; between the cross correlation coefficient (C1) and the cross correlation coefficient (C2).
摘要翻译：公开了能够改善立体声音频编码中的解码音频的空间图像的立体声音频编码装置。在这种装置中，原始互相关计算单元（101）计算原始L信道信号和原始R信道信号之间的相互关系系数（C1）。立体声音频重新配置单元（104）对所输入的L信道信号和R信道信号进行编码和解码，以产生L信道重配置信号（L'）和R信道重配置信号（R'）。重配置互相关计算单元计算L信道重配置信号（L'）和R信道重配置信号（R'）之间的互相关系数（C2）。互相关比较单元（106）计算并输出互相关系数（C1）和互相关系数（C2）之间的比较结果α。

5. 发明授权

US08150702B2 Stereo audio encoding device, stereo audio decoding device, and method thereof 有权
标题翻译：立体声音频编码装置，立体声音频解码装置及其方法
公开(公告)号：US08150702B2
公开(公告)日：2012-04-03
申请号：US12376000
申请日：2007-08-02
申请人： Jiong Zhou , Kok Seng Chong
发明人： Jiong Zhou , Kok Seng Chong
IPC分类号： G10L21/04 , G10L19/00
CPC分类号： G10L19/008 , H04S1/007
摘要： Disclosed is a stereo audio encoding device capable of improving a spatial image of a decoded audio in stereo audio encoding. In this device, an original cross correlation calculation unit (101) calculates a mutual relationship coefficient (C1) between the original L channel signal and the original R channel signal. A stereo audio reconfiguration unit (104) subjects the inputted L channel signal and the R channel signal to encoding and decoding so as to generate an L channel reconfigured signal (L′) and an R channel reconfigured signal (R′). A reconfiguration cross correlation calculation unit (105) calculates a cross correlation coefficient (C2) between the L channel reconfigured signal (L′) and the R channel reconfigured signal (R′). A cross correlation comparison unit (106) calculates and outputs a comparison result &agr; between the cross correlation coefficient (C1) and the cross correlation coefficient (C2).
摘要翻译：公开了能够改善立体声音频编码中的解码音频的空间图像的立体声音频编码装置。在这种装置中，原始互相关计算单元（101）计算原始L信道信号和原始R信道信号之间的相互关系系数（C1）。立体声音频重新配置单元（104）对所输入的L信道信号和R信道信号进行编码和解码，以产生L信道重配置信号（L'）和R信道重配置信号（R'）。重配置互相关计算单元计算L信道重配置信号（L'）和R信道重配置信号（R'）之间的互相关系数（C2）。互相关比较单元（106）计算并输出比较结果＆agr; 互相关系数（C1）和互相关系数（C2）之间。

6. 发明授权

US08374883B2 Encoder and decoder using inter channel prediction based on optimally determined signals 有权
标题翻译：使用基于最佳确定信号的信道间预测的编码器和解码器
公开(公告)号：US08374883B2
公开(公告)日：2013-02-12
申请号：US12740020
申请日：2008-10-31
申请人： Haishan Zhong , Zongxian Liu , Kok Seng Chong , Koji Yoshida
发明人： Haishan Zhong , Zongxian Liu , Kok Seng Chong , Koji Yoshida
IPC分类号： G06F15/00 , G10L19/14 , G10L19/00 , G10L21/04
CPC分类号： G10L19/24 , G10L19/008 , G10L19/0204 , G10L19/04
摘要： An encoder improves inter-channel prediction (ICP) performance in scalable stereo sound encoding using an ICP. In the encoder, ICP analysis units use, as reference signal candidates, a frequency coefficient in the low-band portion of a side residual signal, a frequency coefficient in each sub-band portion of a monaural residual signal, and a frequency coefficient in the low-band portion of the monaural residual signal, respectively, and perform an ICP analysis between the these respective candidates and a frequency coefficient in each sub-band portion of the side residual signal to generate first, second, and third ICP coefficients. A selection unit selects an optimum reference signal from among the reference signal candidates by checking the relationship between the respective reference signal candidates and the frequency coefficient in each sub-band portion of the side residual signal and outputs, to an ICP parameter quantization unit, a reference signal ID indicating the selected reference signal and an ICP coefficient corresponding to the reference signal.
摘要翻译：编码器使用ICP改进可伸缩立体声声音编码中的信道间预测（ICP）性能。在编码器中，ICP分析单元使用侧残留信号的低频带部分中的频率系数，单声道残差信号的每个子带部分中的频率系数，以及频率系数单声道残留信号的低频部分，并且在这些各个候选之间执行ICP分析和侧残留信号的每个子带部分中的频率系数，以产生第一，第二和第三ICP系数。选择单元通过检查各个参考信号候选之间的关系和侧残留信号的每个子带部分中的频率系数来从参考信号候选中选择最佳参考信号，并将其输出到ICP参数量化单元指示所选择的参考信号的参考信号ID和与参考信号相对应的ICP系数。

7. 发明申请

US20100250244A1 ENCODER AND DECODER 有权
标题翻译：编码器和解码器
公开(公告)号：US20100250244A1
公开(公告)日：2010-09-30
申请号：US12740020
申请日：2008-10-31
申请人： Haishan Zhong , Zongxian Liu , Kok Seng Chong , Koji Yoshida
发明人： Haishan Zhong , Zongxian Liu , Kok Seng Chong , Koji Yoshida
IPC分类号： G10L19/02 , G10L19/14
CPC分类号： G10L19/24 , G10L19/008 , G10L19/0204 , G10L19/04
摘要： There is provided an encoder capable of improving inter-channel prediction (ICP) performance in scalable stereo sound encoding using an ICP. In the encoder, ICP analysis units (113, 114, 115) use, as reference signal candidates, a frequency coefficient (sL′(f)) in the low-band portion of a side residual signal, a frequency coefficient (mM,i(f)) in each sub-band portion of a monaural residual signal, and a frequency coefficient (mL(f)) in the low-band portion of the monaural residual signal, respectively, and perform an ICP analysis between the respective these candidates and a frequency coefficient (sM,i(f)) in each sub-band portion of the side residual signal to generate first, second, and third ICP coefficients. A selection unit (116) selects an optimum reference signal from among the reference signal candidates by checking the relationship between the respective reference signal candidates and the frequency coefficient (sM,i(f)) in each sub-band portion of the side residual signal and outputs, to an ICP parameter quantization unit (117), a reference signal ID indicating the selected reference signal and an ICP coefficient corresponding to the reference signal.
摘要翻译：提供了一种能够使用ICP来改进可伸缩立体声声音编码中的信道间预测（ICP）性能的编码器。在编码器中，ICP分析单元（113,114,115）使用侧残留信号的低频带部分中的频率系数（sL'（f））作为参考信号候选，频率系数（mM，i （f））和单声道残留信号的低频带部分中的频率系数（mL（f）），并且在各个这些候选者之间进行ICP分析以及侧残留信号的每个子带部分中的频率系数（sM，i（f）），以产生第一，第二和第三ICP系数。选择单元（116）通过检查各个参考信号候选之间的关系和侧边残留信号的每个子带部分中的频率系数（sM，i（f））来从参考信号候选中选择最佳参考信号并且向ICP参数量化单元（117）输出表示所选参考信号的参考信号ID和与参考信号相对应的ICP系数。

8. 发明授权

US08352249B2 Encoding device, decoding device, and method thereof 有权
标题翻译：编码装置，解码装置及其方法
公开(公告)号：US08352249B2
公开(公告)日：2013-01-08
申请号：US12740727
申请日：2008-11-04
申请人： Kok Seng Chong , Koji Yoshida , Masahiro Oshikiri
发明人： Kok Seng Chong , Koji Yoshida , Masahiro Oshikiri
IPC分类号： G06F15/00 , G10L11/00 , G10L19/00 , G10L19/14 , G10L21/02
CPC分类号： G10L19/008 , G10L19/0208 , G10L19/0212 , G10L19/08 , G10L19/24
摘要： An encoding device improves the sound quality of a stereo signal while maintaining a low bit rate. The encoding device includes: an LP inverse filter which LP-inverse-filters a left signal L(n) by using an inverse quantization linear prediction coefficient AdM(z) of a monaural signal; a T/F conversion unit which converts the left sound source signal Le(n) from a temporal region to a frequency region; an inverse quantizer which inverse-quantizes encoded information Mqe; spectrum division units which divide a high-frequency component of the sound source signal Mde(f) and the left signal Le(f) into a plurality of bands; and scale factor calculation units which calculate scale factors ai and ssi by using a monaural sound source signal Mdeh,i(f), a left sound source signal Leh,i(f), Mdeh,i(f), and right sound source signal Reh,i(f) of each divided band.
摘要翻译：编码装置在维持低比特率的同时提高了立体声信号的声音质量。编码装置包括：LP逆滤波器，其通过使用单声道信号的逆量化线性预测系数AdM（z）对左信号L（n）进行反滤波; T / F转换单元，其将左声源信号Le（n）从时间区域转换为频率区域; 反量化编码信息Mqe的逆量化器; 将声源信号Mde（f）和左信号Le（f）的高频分量分割为多个频带的频谱分割单元; 以及通过使用单声道声源信号Mdeh，i（f），左声源信号Leh，i（f），Mdeh，i（f）和右声源信号来计算比例因子ai和ssi的比例因子计算单元 Reh，i（f）。

9. 发明申请

US20100262421A1 ENCODING DEVICE, DECODING DEVICE, AND METHOD THEREOF 有权
标题翻译：编码设备，解码设备及其方法
公开(公告)号：US20100262421A1
公开(公告)日：2010-10-14
申请号：US12740727
申请日：2008-11-04
申请人： Kok Seng Chong , Koji Yoshida , Masahiro Oshikiri
发明人： Kok Seng Chong , Koji Yoshida , Masahiro Oshikiri
IPC分类号： G10L19/02 , G10L19/00 , G10L19/14
CPC分类号： G10L19/008 , G10L19/0208 , G10L19/0212 , G10L19/08 , G10L19/24
摘要： Provided is an encoding device which improves the sound quality of a stereo signal while maintaining a low bit rate. The encoding device includes: an LP inverse filter (121) which LP-inverse-filterS a left signal L(n) by using an inverse quantization linear prediction coefficient AdM(z) of a monaural signal; a T/F conversion unit (122) which converts the left sound source signal Le(n) from a temporal region to a frequency region; an inverse quantizer (123) which inverse-quantizes encoded information Mqe; spectrum division units (124, 125) which divide a high-frequency component of the sound source signal Mde(f) and the left signal Le(f) into a plurality of bands; and scale factor calculation units (126, 127) which calculate scale factors ai and ssi by using a monaural sound source signal Mdeh,i(f), a left sound source signal Leh,i(f), Mdeh,i(f), and right sound source signal Reh,i(f) of each divided band.
摘要翻译：提供了一种在保持低比特率的同时改善立体声信号的声音质量的编码装置。编码装置包括：LP逆滤波器，其通过使用单声道信号的逆量化线性预测系数AdM（z）对左信号L（n）进行反转滤波; 将左声源信号Le（n）从时间区域转换为频率区域的T / F转换单元（122）逆量化器（123），其对编码信息Mqe进行逆量化; 将声源信号Mde（f）和左信号Le（f）的高频分量分割为多个频带的频谱分割单元（124,125）以及通过使用单声道声源信号Mdeh，i（f），左声源信号Leh，i（f），Mdeh，i（f），...，f（f）来计算比例因子ai和ssi的比例因子计算单元（126,127）和每个分频带的右声源信号Reh，i（f）。

10. 发明授权

US09093080B2 Bandwidth extension method, bandwidth extension apparatus, program, integrated circuit, and audio decoding apparatus 有权
标题翻译：带宽扩展方法，带宽扩展装置，程序，集成电路和音频解码装置
公开(公告)号：US09093080B2
公开(公告)日：2015-07-28
申请号：US13389276
申请日：2011-06-06
申请人： Tomokazu Ishikawa , Takeshi Norimatsu , Huan Zhou , Kok Seng Chong , Haishan Zhong
发明人： Tomokazu Ishikawa , Takeshi Norimatsu , Huan Zhou , Kok Seng Chong , Haishan Zhong
IPC分类号： G10L19/00 , G10L21/038 , G10L21/04
CPC分类号： G10L19/02 , G10L21/038 , G10L21/04
摘要： To provide a bandwidth extension method which allows reduction of computation amount in bandwidth extension and suppression of deterioration of quality in the bandwidth to be extended. In the bandwidth extension method: a low frequency bandwidth signal is transformed into a QMF domain to generate a first low frequency QMF spectrum; pitch-shifted signals are generated by applying different shifting factors on the low frequency bandwidth signal; a high frequency QMF spectrum is generated by time-stretching the pitch-shifted signals in the QMF domain; the high frequency QMF spectrum is modified; and the modified high frequency QMF spectrum is combined with the first low frequency QMF spectrum.
摘要翻译：提供一种允许减少带宽扩展中的计算量并抑制要扩展的带宽中的质量劣化的带宽扩展方法。在带宽扩展方法中：将低频带宽信号变换成QMF域以产生第一低频QMF频谱; 通过在低频带宽信号上应用不同的移位因子来生成音调移位信号; 通过对QMF域中的音调移位信号进行时间扩展来产生高频QMF频谱; 改变高频QMF频谱; 并且修改的高频QMF频谱与第一低频QMF频谱组合。

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