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1. 发明授权

EP3118849B1 ENCODING DEVICE, DECODING DEVICE, AND METHOD THEREOF 有权转让
公开(公告)号：EP3118849B1
公开(公告)日：2020-01-01
申请号：EP16186271.9
申请日：2005-05-17
申请人： Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V.
发明人： OSHIKIRI, Masahiro
IPC分类号： G10L19/00 , G10L21/02 , H04B1/66 , H03M7/30 , G10L19/032 , G10L21/038 , G10L19/02

2. 发明授权

EP3232437B1 VOICE AUDIO ENCODING DEVICE, VOICE AUDIO DECODING DEVICE, VOICE AUDIO ENCODING METHOD, AND VOICE AUDIO DECODING METHOD 有权转让
公开(公告)号：EP3232437B1
公开(公告)日：2018-11-21
申请号：EP17173916.2
申请日：2013-11-26
申请人： Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V.
发明人： LIU, Zongxian , NAGISETTY, Srikanth , OSHIKIRI, Masahiro
IPC分类号： G10L19/035 , G10L19/02
CPC分类号： G10L19/0204 , G10L19/035
摘要： Provided are a voice audio encoding device, voice audio decoding device, voice audio encoding method, and voice audio decoding method that efficiently perform bit distribution and improve sound quality. Dominant frequency band identification unit (301) identifies a dominant frequency band having a norm factor value that is the maximum value within the spectrum of an input voice audio signal. Dominant group determination units (302-1 to 302-N) and non-dominant group determination unit (303) group all sub-bands into a dominant group that contains the dominant frequency band and a non-dominant group that contains no dominant frequency band. Group bit distribution unit (308) distributes bits to each group on the basis of the energy and norm variance of each group. Sub-band bit distribution unit (309) redistributes the bits that have been distributed to each group to each sub-band in accordance with the ratio of the norm to the energy of the groups.

3. 发明公开

EP3321931A1 ENCODING APPARATUS AND ENCODING METHOD 有权
标题翻译：编码装置和编码方法
公开(公告)号：EP3321931A1
公开(公告)日：2018-05-16
申请号：EP17209671.1
申请日：2012-10-12
申请人： Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V.
发明人： KAWASHIMA, Takuya , OSHIKIRI, Masahiro
IPC分类号： G10L19/02 , H03M7/30 , G10L21/0388
CPC分类号： G10L19/0204 , G10L19/0208 , G10L19/0212 , G10L21/0388 , G10L25/06 , H05K999/99
摘要： Provided is an encoding apparatus. A threshold value calculating unit (32) calculates a threshold value from a statistical amount of conversion factors of an extended band. A representative conversion factor extracting unit (33) uses the calculated threshold value to extract conversion factors having large amplitudes. If the number of extracted conversion factors does not reach a specified number, the threshold value calculating unit (32) determines, in accordance with a lacking number of conversion factors, an amount by which the threshold value should be lowered, and modifies the threshold value accordingly. The representative conversion factor extracting unit (33) uses the threshold value, which has been modified, to extract conversion factors. Such threshold value modification by the threshold value difference calculating unit (32) and such conversion factor extraction by the representative conversion factor extracting unit (33) are repeated until the number of extracted conversion factors reaches the specified number.
摘要翻译：提供了一种编码设备。阈值计算单元（32）根据扩展频带的统计量的转换因子来计算阈值。代表性转换因子提取单元（33）使用所计算的阈值来提取具有大振幅的转换因子。如果所提取的转换因子的数量未达到指定数量，则阈值计算单元（32）根据缺少的转换因子数量来确定阈值应该被降低的量，并且修改阈值因此。代表性转换系数提取单元（33）使用已经被修改的阈值来提取转换系数。重复由阈值差异计算单元（32）进行的这种阈值修改和由代表性转换因子提取单元（33）提取的这种转换因子，直到提取的转换因子的数量达到指定数量。

4. 发明授权

EP2772913B1 ENCODING APPARATUS AND ENCODING METHOD 有权转让
标题翻译：编码装置和编码方法
公开(公告)号：EP2772913B1
公开(公告)日：2018-02-14
申请号：EP12843823.1
申请日：2012-10-12
申请人： Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V.
发明人： KAWASHIMA, Takuya , OSHIKIRI, Masahiro
IPC分类号： G10L19/02 , H03M7/30 , G10L21/0388
CPC分类号： G10L19/0204 , G10L19/0208 , G10L19/0212 , G10L21/0388 , G10L25/06 , H05K999/99
摘要： Provided is an encoding apparatus. A threshold value calculating unit (32) calculates a threshold value from a statistical amount of conversion factors of an extended band. A representative conversion factor extracting unit (33) uses the calculated threshold value to extract conversion factors having large amplitudes. If the number of extracted conversion factors does not reach a specified number, the threshold value calculating unit (32) determines, in accordance with a lacking number of conversion factors, an amount by which the threshold value should be lowered, and modifies the threshold value accordingly. The representative conversion factor extracting unit (33) uses the threshold value, which has been modified, to extract conversion factors. Such threshold value modification by the threshold value difference calculating unit (32) and such conversion factor extraction by the representative conversion factor extracting unit (33) are repeated until the number of extracted conversion factors reaches the specified number.

5. 发明公开

EP3624119A1 ENCODING APPARATUS AND ENCODING METHOD 有权转让
公开(公告)号：EP3624119A1
公开(公告)日：2020-03-18
申请号：EP19205679.4
申请日：2012-10-12
申请人： Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V.
发明人： KAWASHIMA, Takuya , OSHIKIRI, Masahiro
IPC分类号： G10L21/0388 , G10L19/02 , H03M7/30
摘要： Provided is an encoding apparatus. A threshold value calculating unit (32) calculates a threshold value from a statistical amount of conversion factors of an extended band. A representative conversion factor extracting unit (33) uses the calculated threshold value to extract conversion factors having large amplitudes. If the number of extracted conversion factors does not reach a specified number, the threshold value calculating unit (32) determines, in accordance with a lacking number of conversion factors, an amount by which the threshold value should be lowered, and modifies the threshold value accordingly. The representative conversion factor extracting unit (33) uses the threshold value, which has been modified, to extract conversion factors. Such threshold value modification by the threshold value difference calculating unit (32) and such conversion factor extraction by the representative conversion factor extracting unit (33) are repeated until the number of extracted conversion factors reaches the specified number.

6. 发明公开

EP3457400A1 VOICE AUDIO ENCODING DEVICE, VOICE AUDIO DECODING DEVICE, VOICE AUDIO ENCODING METHOD, AND VOICE AUDIO DECODING METHOD 有权转让
公开(公告)号：EP3457400A1
公开(公告)日：2019-03-20
申请号：EP18202397.8
申请日：2013-11-26
申请人： FRAUNHOFER-GESELLSCHAFT zur Förderung der angewandten Forschung e.V.
发明人： LIU, Zongxian , NAGISETTY, Srikanth , OSHIKIRI, Masahiro
IPC分类号： G10L19/035 , G10L19/02
摘要： Provided are a voice audio encoding device, voice audio decoding device, voice audio encoding method, and voice audio decoding method that efficiently perform bit distribution and improve sound quality. Dominant frequency band identification unit (301) identifies a dominant frequency band having a norm factor value that is the maximum value within the spectrum of an input voice audio signal. Dominant group determination units (302-1 to 302-N) and non-dominant group determination unit (303) group all sub-bands into a dominant group that contains the dominant frequency band and a non-dominant group that contains no dominant frequency band. Group bit distribution unit (308) distributes bits to each group on the basis of the energy and norm variance of each group. Sub-band bit distribution unit (309) redistributes the bits that have been distributed to each group to each sub-band in accordance with the ratio of the norm to the energy of the groups.

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