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1. 发明授权

US08108222B2 Encoding device and decoding device 有权
标题翻译：编码设备和解码设备
公开(公告)号：US08108222B2
公开(公告)日：2012-01-31
申请号：US12836900
申请日：2010-07-15
申请人： Mineo Tsushima , Takeshi Norimatsu , Kosuke Nishio , Naoya Tanaka
发明人： Mineo Tsushima , Takeshi Norimatsu , Kosuke Nishio , Naoya Tanaka
IPC分类号： G10L21/00
CPC分类号： G10L21/038 , G10L19/0208 , G10L19/0212
摘要： An encoding device (200) includes an MDCT unit (202) that transforms an input signal in a time domain into a frequency spectrum including a lower frequency spectrum, a BWE encoding unit (204) that generates extension data which specifies a higher frequency spectrum at a higher frequency than the lower frequency spectrum, and an encoded data stream generating unit (205) that encodes to output the lower frequency spectrum obtained by the MDCT unit (202) and the extension data obtained by the BWE encoding unit (204). The BWE encoding unit (204) generates as the extension data (i) a first parameter which specifies a lower subband which is to be copied as the higher frequency spectrum from among a plurality of the lower subbands which form the lower frequency spectrum obtained by the MDCT unit (202) and (ii) a second parameter which specifies a gain of the lower subband after being copied.
摘要翻译：一种编码装置（200）包括：将时域中的输入信号变换成包括较低频谱的频谱的MDCT单元（202），生成扩展数据的BWE编码单元（204），其生成指定较高频谱的扩展数据频率高于较低频谱的编码数据流生成单元（205），其编码为输出由MDCT单元（202）获得的较低频谱和由BWE编码单元（204）获得的扩展数据。 BWE编码单元（204）生成作为扩展数据（i）的第一参数，该第一参数指定要从多个下个子带中复制的较低子带作为较高频谱，其形成由 MDCT单元（202）和（ii）指定复制后下一个子带的增益的第二参数。

2. 发明授权

US08046217B2 Geometric calculation of absolute phases for parametric stereo decoding 有权
标题翻译：用于参数立体声解码的绝对相位的几何计算
公开(公告)号：US08046217B2
公开(公告)日：2011-10-25
申请号：US11660094
申请日：2005-08-02
申请人： Shuji Miyasaka , Yoshiaki Takagi , Naoya Tanaka , Mineo Tsushima
发明人： Shuji Miyasaka , Yoshiaki Takagi , Naoya Tanaka , Mineo Tsushima
IPC分类号： G10L19/14 , G10L19/00 , G10L19/02
CPC分类号： G10L19/008 , H04S3/00
摘要： An audio decoder which reproduces original signals from a bit stream including (i) a downmix signal of the original signals, and (ii) supplementary information indicating a gain ratio D and phase difference θ between the original signals. The audio decoder includes: a decoding unit extracting the downmix signal; a transformation unit transforming the extracted downmix signal into a frequency domain signal; a phase rotator determination unit determining two phase rotators having, as the phase rotation angles, angles α and β respectively obtained by dividing a contained angle by a diagonal of a parallelogram; a separation unit separating the frequency domain signal into two separation signals respectively indicating angles α and β as phase differences between the signals and the decoded downmix signal; and an inverse transformation unit inversely transforming the respective two separation signals into time domain signals so as to reproduce the two audio signals.
摘要翻译：一种从比特流再现原始信号的音频解码器，包括（i）原始信号的下混信号，以及（ii）指示增益比D和相位差的补充信息; 之间的原始信号。音频解码器包括：提取下混合信号的解码单元; 变换单元，将提取的下混合信号变换为频域信号; 相位旋转器确定单元确定具有角度α和＆lt; bgr的相位旋转角度的两个相位旋转器; 分别通过将包含的角度除以平行四边形的对角线而获得; 分离单元，将频域信号分离成分别表示角度α和＆lt; bgr的两个分离信号; 作为信号与解码缩混信号之间的相位差; 以及逆变换单元，将相应的两个分离信号逆变换为时域信号，以再现两个音频信号。

3. 发明授权

US07783496B2 Encoding device and decoding device 有权
标题翻译：编码设备和解码设备
公开(公告)号：US07783496B2
公开(公告)日：2010-08-24
申请号：US12370203
申请日：2009-02-12
申请人： Mineo Tsushima , Takeshi Norimatsu , Kosuke Nishio , Naoya Tanaka
发明人： Mineo Tsushima , Takeshi Norimatsu , Kosuke Nishio , Naoya Tanaka
IPC分类号： G10L21/00
CPC分类号： G10L21/038 , G10L19/0208 , G10L19/0212
摘要： An encoding device (200) includes an MDCT unit (202) that transforms an input signal in a time domain into a frequency spectrum including a lower frequency spectrum, a BWE encoding unit (204) that generates extension data which specifies a higher frequency spectrum at a higher frequency than the lower frequency spectrum, and an encoded data stream generating unit (205) that encodes to output the lower frequency spectrum obtained by the MDCT unit (202) and the extension data obtained by the BWE encoding unit (204). The BWE encoding unit (204) generates as the extension data (i) a first parameter which specifies a lower subband which is to be copied as the higher frequency spectrum from among a plurality of the lower subbands which form the lower frequency spectrum obtained by the MDCT unit (202) and (ii) a second parameter which specifies a gain of the lower subband after being copied.
摘要翻译：一种编码装置（200）包括：将时域中的输入信号变换成包括较低频谱的频谱的MDCT单元（202），生成扩展数据的BWE编码单元（204），其生成指定较高频谱的扩展数据频率高于较低频谱的编码数据流生成单元（205），其编码为输出由MDCT单元（202）获得的较低频谱和由BWE编码单元（204）获得的扩展数据。 BWE编码单元（204）生成作为扩展数据（i）的第一参数，该第一参数指定要从多个下个子带中复制的较低子带作为较高频谱，其形成由 MDCT单元（202）和（ii）指定复制后下一个子带的增益的第二参数。

4. 发明授权

US07509254B2 Encoding device and decoding device 有权
标题翻译：编码设备和解码设备
公开(公告)号：US07509254B2
公开(公告)日：2009-03-24
申请号：US11508915
申请日：2006-08-24
申请人： Mineo Tsushima , Takeshi Norimatsu , Kosuke Nishio , Naoya Tanaka
发明人： Mineo Tsushima , Takeshi Norimatsu , Kosuke Nishio , Naoya Tanaka
IPC分类号： G10L19/00
CPC分类号： G10L21/038 , G10L19/0208 , G10L19/0212
摘要： An encoding device (200) includes an MDCT unit (202) that transforms an input signal in a time domain into a frequency spectrum including a lower frequency spectrum, a BWE encoding unit (204) that generates extension data which specifies a higher frequency spectrum at a higher frequency than the lower frequency spectrum, and an encoded data stream generating unit (205) that encodes to output the lower frequency spectrum obtained by the MDCT unit (202) and the extension data obtained by the BWE encoding unit (204). The BWE encoding unit (204) generates as the extension data (i) a first parameter which specifies a lower subband which is to be copied as the higher frequency spectrum from among a plurality of the lower subbands which form the lower frequency spectrum obtained by the MDCT unit (202) and (ii) a second parameter which specifies a gain of the lower subband after being copied.
摘要翻译：一种编码装置（200）包括：将时域中的输入信号变换成包括较低频谱的频谱的MDCT单元（202），生成扩展数据的BWE编码单元（204），其生成指定较高频谱的扩展数据频率高于较低频谱的编码数据流生成单元（205），其编码为输出由MDCT单元（202）获得的较低频谱和由BWE编码单元（204）获得的扩展数据。 BWE编码单元（204）生成作为扩展数据（i）的第一参数，该第一参数指定要从多个下个子带中复制的较低子带作为较高频谱，其形成由 MDCT单元（202）和（ii）指定复制后下一个子带的增益的第二参数。

5. 发明申请

US20080059203A1 Audio Encoding Device, Decoding Device, Method, and Program 有权
标题翻译：音频编码装置，解码装置，方法和程序
公开(公告)号：US20080059203A1
公开(公告)日：2008-03-06
申请号：US11597558
申请日：2005-09-13
申请人： Mineo Tsushima , Yoshiaki Takagi , Kojiro Ono , Naoya Tanaka , Shuji Miyasaka
发明人： Mineo Tsushima , Yoshiaki Takagi , Kojiro Ono , Naoya Tanaka , Shuji Miyasaka
IPC分类号： G10L19/00
CPC分类号： G10L19/0208 , G10L19/008
摘要： Provided are an audio encoding device and an audio decoding device, by which optimal trade-off between code rates and sound quality can be flexibly adjusted. A variable frequency segmentation encoding unit (110) has: difference degree calculation units (101, 102, and 103) for calculating a difference degree between the first and second input signals, depending on a segmentation method A, B, or C for segmenting a frequency band into sub-bands; a selection unit (104) for selecting one of the segmentation methods; and a difference degree and segmentation information encoding unit (105) for encoding the selected method and the difference degree for each sub-band by the method. A variable frequency segment decoding unit (210) has: a segmentation information decoding unit 202 for decoding the segmentation information to learn the segmentation method; a switching unit (203) for outputting a difference degree code to one of difference degree decoding units corresponding to the segmentation method; and difference degree decoding units (204, 205, and 206), for decoding the difference degree code to the difference degree for each sub-band.
摘要翻译：提供了一种音频编码装置和音频解码装置，可以灵活地调整码率和声音质量之间的最佳权衡。可变频率分割编码单元（110）具有：用于计算第一和第二输入信号之间的差值的差分计算单元（101,102和103），这取决于分段方法A，B或C，用于分割频带变成子带; 选择单元（104），用于选择所述分割方法之一; 以及用于通过该方法对所选择的方法和每个子带的差分度进行编码的差分度和分割信息编码单元（105）。可变频段解码单元（210）具有：分割信息解码单元202，对分割信息进行解码以学习分割方法; 切换单元，用于将差分度码输出到与分割方法对应的差分度解码单元之一; 和差分度解码单元（204,205和206），用于将差分度码解码为每个子带的差分度。

6. 发明申请

US20070255572A1 Audio Decoder, Method and Program 有权
标题翻译：音频解码器，方法和程序
公开(公告)号：US20070255572A1
公开(公告)日：2007-11-01
申请号：US11660094
申请日：2005-08-02
申请人： Shuji Miyasaka , Yoshiaki Takagi , Naoya Tanaka , Mineo Tsushima
发明人： Shuji Miyasaka , Yoshiaki Takagi , Naoya Tanaka , Mineo Tsushima
IPC分类号： G10L19/00
CPC分类号： G10L19/008 , H04S3/00
摘要： An audio decoder which reproduces original signals from a bit stream including a downmix signal of the original signals and supplementary information indicating the gain ratio D and the phase difference θ between the original signals. The audio decoder which reproduces the original signals includes: a decoding unit (100) which extracts the downmix signal from the bitstream; a transformation unit (101) which transforms the extracted downmix signal into a frequency domain signal; a phase rotator determination unit (102) which determines two phase rotators having, as the phase rotation angles, angles α and β respectively obtained by dividing a contained angle by a diagonal of a parallelogram where the length ratio of two adjacent sides equals to the gain ratio D and the contained angle equals to the phase difference θ, a separation unit (103) which separates the frequency domain signal into two separation signals respectively indicating angles α and β as phase differences between the signals and the decoded downmix signal, and an inverse transformation unit (104) which inversely transforms the respective two separation signals into time domain signals so as to reproduce the two audio signals.
摘要翻译：一种音频解码器，其从包括原始信号的下混信号的比特流中再现原始信号，以及指示增益比D和原始信号之间的相位差θ的补充信息。再现原始信号的音频解码器包括：解码单元（100），其从比特流中提取降混信号; 变换单元，其将所提取的下混信号变换为频域信号; 相位旋转器确定单元（102），其确定两个相位旋转器，其具有作为相位旋转角度的角度α和β，分别通过将包含的角度除以两个相邻边的长度比等于增益的平行四边形的对角线获得比率D和包含的角度等于相位差θ，分离单元（103）将频域信号分离成分别表示角度α和β的两个分离信号，作为信号和解码的下混信号之间的相位差，以及反相变换单元（104），其将相应的两个分离信号逆变换为时域信号，以便再现两个音频信号。

7. 发明申请

US20060287853A1 Encoding device and decoding device 有权
标题翻译：编码设备和解码设备
公开(公告)号：US20060287853A1
公开(公告)日：2006-12-21
申请号：US11508915
申请日：2006-08-24
申请人： Mineo Tsushima , Takeshi Norimatsu , Kosuke Nishio , Naoya Tanaka
发明人： Mineo Tsushima , Takeshi Norimatsu , Kosuke Nishio , Naoya Tanaka
IPC分类号： G10L19/00
CPC分类号： G10L21/038 , G10L19/0208 , G10L19/0212
摘要： An encoding device (200) includes an MDCT unit (202) that transforms an input signal in a time domain into a frequency spectrum including a lower frequency spectrum, a BWE encoding unit (204) that generates extension data which specifies a higher frequency spectrum at a higher frequency than the lower frequency spectrum, and an encoded data stream generating unit (205) that encodes to output the lower frequency spectrum obtained by the MDCT unit (202) and the extension data obtained by the BWE encoding unit (204). The BWE encoding unit (204) generates as the extension data (i) a first parameter which specifies a lower subband which is to be copied as the higher frequency spectrum from among a plurality of the lower subbands which form the lower frequency spectrum obtained by the MDCT unit (202) and (ii) a second parameter which specifies a gain of the lower subband after being copied.
摘要翻译：一种编码装置（200）包括：将时域中的输入信号变换成包括较低频谱的频谱的MDCT单元（202），生成扩展数据的BWE编码单元（204），其生成指定较高频谱的扩展数据频率高于较低频谱的编码数据流生成单元（205），其编码为输出由MDCT单元（202）获得的较低频谱和由BWE编码单元（204）获得的扩展数据。 BWE编码单元（204）生成作为扩展数据（i）的第一参数，该第一参数指定要从多个下个子带中复制的较低子带作为较高频谱，其形成由 MDCT单元（202）和（ii）指定复制后下一个子带的增益的第二参数。

8. 发明申请

US20060245489A1 Coding apparatus, coding method, and codebook 有权
标题翻译：编码装置，编码方法和码本
公开(公告)号：US20060245489A1
公开(公告)日：2006-11-02
申请号：US10557149
申请日：2004-06-07
申请人： Mineo Tsushima
发明人： Mineo Tsushima
IPC分类号： H04B1/66
CPC分类号： H04N19/126 , H03M7/40 , H04N19/187 , H04N19/94
摘要： A coding apparatus (500) includes: a fourth layer codebook that shows N number of (N is a natural number) codes indicating uniquely respective N integers that increment one by one; and first to third layer codebooks that show M number of (M is a natural number that satisfies M
摘要翻译：一种编码装置（500）包括：第四层码本，其显示N个（N是自然数），唯一地指示各个逐个递增的N个整数; 以及第一到第三层码本，其显示M个数（M是满足M

9. 发明授权

US06484142B1 Encoder using Huffman codes 有权
标题翻译：编码器使用霍夫曼码
公开(公告)号：US06484142B1
公开(公告)日：2002-11-19
申请号：US09551796
申请日：2000-04-18
申请人： Shuji Miyasaka , Takeshi Norimatsu , Mineo Tsushima , Tomokazu Ishikawa , Yoshiaki Sawada
发明人： Shuji Miyasaka , Takeshi Norimatsu , Mineo Tsushima , Tomokazu Ishikawa , Yoshiaki Sawada
IPC分类号： G10L1914
CPC分类号： H03M7/42
摘要： An encoder of the present invention includes: G storage sections for storing G groups of data; a selection section for selecting one of H Huffman codebooks having codebook numbers for each of the groups of data; G encoding sections Huffman-encoding the G groups of data by using the selected Huffman codebook; and an encoding section for encoding the codebook number of each Huffman codebook selected. The selection section includes a calculation section for calculating a code length and a control section for selecting one of the Huffman codebooks. When the Huffman codebook selected is an unsigned codebook, a number of bits required for sign information has previously been added to the calculated code length.
摘要翻译：本发明的编码器包括：G存储部分，用于存储G组数据; 选择部分，用于选择具有每组数据的码本号码的霍夫曼代码簿之一; G编码部分通过使用所选的霍夫曼码本对G组数据进行霍夫曼编码; 以及编码部，用于编码所选择的每个霍夫曼码本的码本号。选择部分包括用于计算代码长度的计算部分和用于选择霍夫曼码本之一的控制部分。当选择的霍夫曼代码簿是无符号码本时，已经将计算的代码长度添加到符号信息所需的位数。

10. 发明申请

US20100042415A1 AUDIO SIGNAL CODING METHOD AND DECODING METHOD 有权
标题翻译：音频信号编码方法和解码方法
公开(公告)号：US20100042415A1
公开(公告)日：2010-02-18
申请号：US12438915
申请日：2007-12-05
申请人： Mineo Tsushima , Akihisa Kawamura
发明人： Mineo Tsushima , Akihisa Kawamura
IPC分类号： G10L21/00
CPC分类号： G10L19/022
摘要： It possible not only to reduce a delay, but also to enhance the coding efficiency and reduce audio artifact upon coding.An audio signal coding method for coding an audio signal to be coded, the method comprising: judging for each of frames whether or not coding should be performed on each of two or more subframes into which the frame is divided, based on an audio signal contained in the frame into which the audio signal to be coded is divided for every set of samples; and when judged that the coding should be performed on each of the subframes, performing, for each subframe, subframe processing of (i) determining a value representing a characteristic of an audio signal of the subframe, and (ii) coding the audio signal using the determined value, wherein in the performing of the subframe processing, whether or not all the values determined for the subframes are the same is judged, and when all the values are the same, the audio signal is coded as exceptional processing, using a characteristic different from characteristics of audio signals indicated by the values.
摘要翻译：可能不仅可以减少延迟，还可以提高编码效率，减少编码时的音频伪影。一种用于对要编码的音频信号进行编码的音频信号编码方法，所述方法包括：基于所包含的音频信号，判断每个帧是否应对被划分的帧的两个或更多个子帧中的每一个执行编码在每个样本集合中划分要编码的音频信号的帧; 并且当判断为每个子帧执行编码时，对于每个子帧执行子帧处理（i）确定表示子帧的音频信号的特性的值，以及（ii）使用确定的值，其中在执行子帧处理中，判定对于子帧确定的全部值是否相同，并且当所有值相同时，将音频信号编码为异常处理，使用特性与由值指示的音频信号的特性不同。

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