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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

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。

3. 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。

4. 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。

5. 发明授权

US07283967B2 Encoding device decoding device 有权
标题翻译：编码设备解码设备
公开(公告)号：US07283967B2
公开(公告)日：2007-10-16
申请号：US10285609
申请日：2002-11-01
申请人： Kosuke Nishio , Mineo Tsushima , Naoya Tanaka , Takeshi Norimatsu
发明人： Kosuke Nishio , Mineo Tsushima , Naoya Tanaka , Takeshi Norimatsu
IPC分类号： G10L19/00
CPC分类号： G10L21/038 , G10L19/0208
摘要： An encoding device (100) includes (i) a first encoding unit (132) that encodes spectral data in the lower frequency band represented by a plularity of parameters, out of the spectral data obtained by transforming an audio signal inputted for a fixed time length, (ii) a second quantizing unit (133) that generates sub information representing characteristics of the spectral data in the higher frequency by fewer parameters than those for the lower frequency band, out of the spectral data obtained by the transformation, (iii) a second encoding unit (134) that encodes the generated sub information, and (iv) a stream output unit (140) that outputs the data encoded by the first encoding unit (132) and the data encoded by the second encoding unit (134).
摘要翻译：一种编码装置（100）包括：（i）第一编码单元（132），其通过将输入的固定时间长度的音频信号变换得到的频谱数据中编码由参数的多样性表示的较低频带中的频谱数据，（ii）第二量化单元（133），通过变换获得的频谱数据，产生表示较低频带的频谱数据的频谱数据的特性的子信息，（iii）编码所生成的子信息的第二编码单元（134），以及（iv）输出由第一编码单元（132）编码的数据和由第二编码单元（134）编码的数据的流输出单元（140）。

6. 发明申请

US20070005353A1 Encoding device and decoding device 有权
公开(公告)号：US20070005353A1
公开(公告)日：2007-01-04
申请号：US11509033
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.

7. 发明授权

US07139702B2 Encoding device and decoding device 有权
公开(公告)号：US07139702B2
公开(公告)日：2006-11-21
申请号：US10292702
申请日：2002-11-13
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： G10L21/04
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.

8. 发明申请

US20100280834A1 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：US20100280834A1
公开(公告)日：2010-11-04
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： 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。

9. 发明授权

US07392176B2 Encoding device, decoding device and audio data distribution system 有权
标题翻译：编码设备，解码设备和音频数据分发系统
公开(公告)号：US07392176B2
公开(公告)日：2008-06-24
申请号：US10285627
申请日：2002-11-01
申请人： Kosuke Nishio , Takeshi Norimatsu , Mineo Tsushima , Naoya Tanaka
发明人： Kosuke Nishio , Takeshi Norimatsu , Mineo Tsushima , Naoya Tanaka
IPC分类号： G10L19/02
CPC分类号： G10L21/038 , G10L19/0208
摘要： An audio data input unit of an encoding device splits an audio data string into contiguous samples of audio data, and a transforming unit transforms the split audio data into spectral data in a frequency domain. A data dividing unit divides the spectral data into a lower frequency band and a higher frequency band at 11.025 kHz (f1) as a boundary. The spectral data in the lower frequency band is quantized and encoded by a first quantizing unit and an encoding unit. A second quantizing unit generates sub information indicating a characteristic of the spectral data in the higher frequency band, and a second encoding unit encodes the sub information. A stream output unit integrates the codes obtained by the first and second encoding units and outputs the integrated one. Here, f1 is a half or less of a sampling frequency f2 at which the audio data string is created.
摘要翻译：编码装置的音频数据输入单元将音频数据串分割为音频数据的连续样本，变换单元将分割音频数据变换为频域中的频谱数据。数据分割单元将频谱数据划分为11.025kHz（f 1）的较低频带和较高频带作为边界。较低频带中的频谱数据由第一量化单元和编码单元进行量化和编码。第二量化单元产生指示较高频带中的频谱数据的特性的子信息，第二编码单元对子信息进行编码。流输出单元将由第一编码单元和第二编码单元获得的代码进行积分并输出。这里，f 1是创建音频数据串的采样频率f 2的一半或更小。

10. 发明授权

US07328160B2 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：US07328160B2
公开(公告)日：2008-02-05
申请号：US10285633
申请日：2002-11-01
申请人： Kosuke Nishio , Takeshi Norimatsu , Mineo Tsushima , Naoya Tanaka
发明人： Kosuke Nishio , Takeshi Norimatsu , Mineo Tsushima , Naoya Tanaka
IPC分类号： G10L19/00
CPC分类号： G10L21/038 , G10L19/0208
摘要： An encoding device includes a transforming unit operable to extract a part of an inputted audio signal at predetermined time intervals and to transform each extracted part to produce a plurality of windows composed of short blocks, and a judging unit operable to compare the windows with one another to judge whether there is a similarity of a predetermined degree and to replace a high frequency part of a first window, which is one of the produced windows, with values “0” when there is the similarity, wherein the first window and a second window share a high frequency part of the second window, which is also one of the produced windows. The encoding device also includes a first quantizing unit operable to quantize the produced windows after replacing operation; a first encoding unit operable to encode the quantized windows to produce encoded data; and a stream output unit operable to output the produced encoded data.
摘要翻译：一种编码装置，包括：变换单元，用于以预定的时间间隔提取输入的音频信号的一部分，并且变换每个提取的部分以产生由短块组成的多个窗口;以及判断单元，用于将窗口彼此进行比较判断是否存在预定程度的相似度，并且当存在相似性时，将作为生成窗口之一的第一窗口的高频部分替换为值“0”，其中第一窗口和第二窗口分享第二个窗口的高频部分，这也是生成的窗口之一。编码装置还包括第一量化单元，其可操作以在更换操作之后量化生成的窗口; 第一编码单元，其可操作以对所述量化窗口进行编码以产生编码数据; 以及流输出单元，其可操作以输出所生成的编码数据。

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