专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明授权

US09361892B2 Encoder apparatus and method that perform preliminary signal selection for transform coding before main signal selection for transform coding 有权
标题翻译：在用于变换编码的主信号选择之前执行用于变换编码的初步信号选择的编码器装置和方法
公开(公告)号：US09361892B2
公开(公告)日：2016-06-07
申请号：US13820760
申请日：2011-09-05
申请人： Takuya Kawashima , Masahiro Oshikiri
发明人： Takuya Kawashima , Masahiro Oshikiri
IPC分类号： G10L19/00 , G10L19/24 , G10L19/02 , G10L19/12 , G10L19/20
CPC分类号： G10L19/00 , G10L19/0212 , G10L19/12 , G10L19/20 , G10L19/24
摘要： An encoder apparatus is provided that suppresses the quality degradation of encoding processes. An ultimate selection candidate limiting unit uses the spectrum of an input signal and a residual spectrum to designate a given number of pre-selected suppression factors to a CELP component suppressing unit, which uses the designated suppression factors to generate a suppressed spectrum. A CELP residual signal spectrum calculating unit, to which the suppressed spectrum is input, calculates a residual spectrum. A conversion encoding unit uses the residual spectrum to perform a second encoding process. A distortion evaluating unit determines one of the designated suppression factors by use of the spectrum of a second decoded signal generated by decoding a second code obtained by the second encoding process, and further by use of the suppressed spectrum and the spectrum of the input signal.
摘要翻译：提供了一种编码器装置，其抑制编码处理的质量劣化。最终选择候选限制单元使用输入信号和残余频谱的频谱来将给定数量的预选抑制因子指定给CELP分量抑制单元，其使用指定的抑制因子来产生抑制频谱。抑制频谱被输入的CELP残差信号频谱计算单元计算剩余频谱。转换编码单元使用剩余频谱来执行第二编码处理。失真评估单元通过使用通过对通过第二编码处理获得的第二代码进行解码而生成的第二解码信号的频谱，并且进一步通过使用抑制的频谱和输入信号的频谱来确定指定的抑制因子之一。

2. 发明授权

US09082412B2 Decoder, encoder, and methods thereof 有权
标题翻译：解码器，编码器及其方法
公开(公告)号：US09082412B2
公开(公告)日：2015-07-14
申请号：US13702382
申请日：2011-05-27
申请人： Takuya Kawashima , Masahiro Oshikiri
发明人： Takuya Kawashima , Masahiro Oshikiri
IPC分类号： G10L21/00 , G10L21/034 , G10L19/22 , G10L19/12 , G10L19/02 , G10L19/24
CPC分类号： G10L21/034 , G10L19/0204 , G10L19/0212 , G10L19/12 , G10L19/22 , G10L19/24
摘要： Disclosed is a decoder capable of improving the sound quality of a decoded sound signal in an encoding method which combines speech encoding and music encoding in a hierarchical structure. A transform-encoding decoding unit (202) decodes transform-encoded data to generate a spectrum of a decoded transform-encoded signal. A band decision unit (203) uses the spectrum of the decoded transform-encoded signal to decide whether each of a plurality of bands in which frequency components of an input signal are divided constitute a first band in which a transform encoded pulse is not established or a second band in which said pulse is established. A CELP component suppression unit (207) suppresses the spectrum of a CELP decoded signal, which is the frequency component of a decoded signal of CELP encoded data, to the extent that suppression in the first band is weaker than suppression in the second band.
摘要翻译：公开了一种解码器，其能够以分层结构组合语音编码和音乐编码的编码方法来提高解码声音信号的声音质量。变换编码解码单元（202）对变换编码数据进行解码，生成解码变换编码信号的频谱。频带判定单元（203）使用解码后的变换编码信号的频谱来判定输入信号的频率成分被划分的多个频带中的每一个是否构成未建立变换编码脉冲的第一频带，其中建立所述脉冲的第二频带。 CELP分量抑制单元（207）抑制作为CELP编码数据的解码信号的频率分量的CELP解码信号的频谱，使得第一频带的抑制弱于第二频带中的抑制。

3. 发明申请

US20130166308A1 ENCODER APPARATUS AND ENCODING METHOD 有权
标题翻译：编码器装置和编码方法
公开(公告)号：US20130166308A1
公开(公告)日：2013-06-27
申请号：US13820760
申请日：2011-09-05
申请人： Takuya Kawashima , Masahiro Oshikiri
发明人： Takuya Kawashima , Masahiro Oshikiri
IPC分类号： G10L19/00
CPC分类号： G10L19/00 , G10L19/0212 , G10L19/12 , G10L19/20 , G10L19/24
摘要： Provided is an encoder apparatus that can suppress the quality degradation of encoding processes. An ultimate selection candidate limiting unit (109) uses the spectrum of an input signal and a residual spectrum to designate a given number of pre-selected suppression factors to a CELP component suppressing unit (104); the CELP component suppressing unit (104) uses the designated suppression factors to generate a suppressed spectrum; a CELP residual signal spectrum calculating unit (105), to which the suppressed spectrum is input, calculates a residual spectrum; a conversion encoding unit (110) uses the residual spectrum to performs a second encoding process; and a distortion evaluating unit (112) determines one of the designated suppression factors by use of the spectrum of a second decoded signal generated by decoding a second code obtained by the second encoding process and further by use of the suppressed spectrum and the spectrum of the input signal.
摘要翻译：提供了可以抑制编码处理的质量劣化的编码器装置。最终选择候选限制单元（109）使用输入信号和残余频谱的频谱来将给定数量的预先选择的抑制因子指定给CELP分量抑制单元（104）; CELP分量抑制单元（104）使用指定的抑制因子来产生抑制的频谱; 输入抑制频谱的CELP残差信号频谱计算单元（105）计算剩余频谱; 转换编码单元（110）使用剩余频谱来执行第二编码处理; 并且失真评估单元（112）通过使用通过对通过第二编码处理获得的第二代码进行解码而产生的第二解码信号的频谱来确定所指定的抑制因子中的一个，并且还通过使用抑制的频谱和输入信号。

4. 发明申请

US20140200901A1 ENCODING DEVICE, DECODING DEVICE, ENCODING METHOD AND DECODING METHOD 有权
标题翻译：编码设备，解码设备，编码方法和解码方法
公开(公告)号：US20140200901A1
公开(公告)日：2014-07-17
申请号：US14238041
申请日：2012-08-24
申请人： Takuya Kawashima , Katsunori Daimou , Masahiro Oshikiri
发明人： Takuya Kawashima , Katsunori Daimou , Masahiro Oshikiri
IPC分类号： G10L19/26
CPC分类号： G10L19/265 , G10L19/0204 , G10L21/0388
摘要： By copying to a high-frequency band portion (extension band) a low-frequency band portion in which peaking has been set to a sufficiently low state, this encoding device is capable of preventing generation of a spectrum with overly high peaking in the high-frequency band portion, and of generating a high-quality extension band spectrum. This device comprises: a maximum value search unit which searches, in each of multiple sub-bands obtained by dividing the low-frequency band portion of an audio signal and/or music signal below a prescribed frequency, for the maximum value of the amplitude of a first spectrum obtained by decoding first encoded data, which is encoded data in the low-frequency band portion; and an amplitude normalization unit which obtains a normalized spectrum by normalizing, at the maximum values of the amplitude of each sub-band, the first spectrum contained in each sub-band.
摘要翻译：通过将峰值设定为足够低的低频区域的低频带部分（扩展频带）复制到该高频带部分（扩展频带），该编码装置能够防止高频带部分频带部分，并且产生高质量的扩展频带。该装置包括：最大值搜索单元，其在通过将音频信号的低频带部分和/或音频信号低于规定频率的下划线获得的多个子带中搜索最大值的幅度的最大值通过对作为低频带部分中的编码数据的第一编码数据进行解码而获得的第一频谱; 以及振幅归一化单元，其通过在每个子带的振幅的最大值处归一化包含在每个子带中的第一频谱来获得归一化频谱。

5. 发明申请

US20130085752A1 DECODER, ENCODER, AND METHODS THEREOF 有权
标题翻译：解码器，编码器及其方法
公开(公告)号：US20130085752A1
公开(公告)日：2013-04-04
申请号：US13702382
申请日：2011-05-27
申请人： Takuya Kawashima , Masahiro Oshikiri
发明人： Takuya Kawashima , Masahiro Oshikiri
IPC分类号： G10L21/034
CPC分类号： G10L21/034 , G10L19/0204 , G10L19/0212 , G10L19/12 , G10L19/22 , G10L19/24
摘要： Disclosed is a decoder capable of improving the sound quality of a decoded sound signal in an encoding method which combines speech encoding and music encoding in a hierarchical structure. A transform-encoding decoding unit (202) decodes transform-encoded data to generate a spectrum of a decoded transform-encoded signal. A band decision unit (203) uses the spectrum of the decoded transform-encoded signal to decide whether each of a plurality of bands in which frequency components of an input signal are divided constitute a first band in which a transform encoded pulse is not established or a second band in which said pulse is established. A CELP component suppression unit (207) suppresses the spectrum of a CELP decoded signal, which is the frequency component of a decoded signal of CELP encoded data, to the extent that suppression in the first band is weaker than suppression in the second band.
摘要翻译：公开了一种解码器，其能够以分层结构组合语音编码和音乐编码的编码方法来提高解码声音信号的声音质量。变换编码解码单元（202）对变换编码数据进行解码，生成解码变换编码信号的频谱。频带判定单元（203）使用解码后的变换编码信号的频谱来判定输入信号的频率成分被划分的多个频带中的每一个是否构成未建立变换编码脉冲的第一频带，其中建立所述脉冲的第二频带。 CELP分量抑制单元（207）抑制作为CELP编码数据的解码信号的频率分量的CELP解码信号的频谱，使得第一频带的抑制弱于第二频带中的抑制。

6. 发明授权

US09384749B2 Encoding device, decoding device, encoding method and decoding method 有权
标题翻译：编码装置，解码装置，编码方法和解码方法
公开(公告)号：US09384749B2
公开(公告)日：2016-07-05
申请号：US14238041
申请日：2012-08-24
申请人： Takuya Kawashima , Katsunori Daimou , Masahiro Oshikiri
发明人： Takuya Kawashima , Katsunori Daimou , Masahiro Oshikiri
IPC分类号： G10L21/0388 , G10L19/26 , G10L19/02
CPC分类号： G10L19/265 , G10L19/0204 , G10L21/0388
摘要： By copying to a high-frequency band portion (extension band) a low-frequency band portion in which peaking has been set to a sufficiently low state, this encoding device is capable of preventing generation of a spectrum with overly high peaking in the high-frequency band portion, and of generating a high-quality extension band spectrum. This device comprises: a maximum value search unit which searches, in each of multiple sub-bands obtained by dividing the low-frequency band portion of an audio signal and/or music signal below a prescribed frequency, for the maximum value of the amplitude of a first spectrum obtained by decoding first encoded data, which is encoded data in the low-frequency band portion; and an amplitude normalization unit which obtains a normalized spectrum by normalizing, at the maximum values of the amplitude of each sub-band, the first spectrum contained in each sub-band.
摘要翻译：通过将峰值设定为足够低的低频区域的高频带部分（扩展频带）复制，能够防止在高频带部分频带部分，并且产生高质量的扩展频带。该装置包括：最大值搜索单元，其在通过将音频信号的低频带部分和/或音频信号低于规定频率的下划线获得的多个子带中搜索最大值的幅度的最大值通过对作为低频带部分中的编码数据的第一编码数据进行解码而获得的第一频谱; 以及振幅归一化单元，其通过在每个子带的振幅的最大值处归一化包含在每个子带中的第一频谱来获得归一化频谱。

7. 发明申请

US20130339012A1 SPEECH/AUDIO ENCODING APPARATUS, SPEECH/AUDIO DECODING APPARATUS, AND METHODS THEREOF 有权
标题翻译：语音/音频编码设备，语音/音频解码设备及其方法
公开(公告)号：US20130339012A1
公开(公告)日：2013-12-19
申请号：US14001977
申请日：2012-03-19
申请人： Takuya Kawashima , Masahiro Oshikiri
发明人： Takuya Kawashima , Masahiro Oshikiri
IPC分类号： G10L19/12
CPC分类号： G10L19/002 , G10L19/0208 , G10L19/035 , G10L19/06 , G10L19/12
摘要： Provided is a speech/audio encoding apparatus with which it is possible to code a significant frequency domain region with high precision, and to enable high audio quality. A speech/audio encoding apparatus codes a linear prediction coefficient. A significant frequency domain region detection unit identifies a frequency domain region which is aurally significant from the linear prediction coefficient. A frequency domain region repositioning unit repositions the significant frequency domain region which is identified by the significant frequency domain region detection unit. A bit allocation computation unit determines a coding bit allocation on the basis of the significant frequency domain region which is repositioned by the frequency domain region repositioning unit.
摘要翻译：提供了一种语音/音频编码装置，其可以以高精度对重要的频域区域进行编码，并且能够实现高音频质量。语音/音频编码装置对线性预测系数进行编码。显着的频域区域检测单元从线性预测系数识别听觉显着的频域区域。频域区域重新定位单元重新定位由有效频域区域检测单元识别的显着频域区域。比特分配计算单元基于由频域区域重定位单元重定位的有效频域区域来确定编码比特分配。

8. 发明授权

US09536534B2 Speech/audio encoding apparatus, speech/audio decoding apparatus, and methods thereof 有权
标题翻译：语音/音频编码装置，语音/音频解码装置及其方法
公开(公告)号：US09536534B2
公开(公告)日：2017-01-03
申请号：US14001977
申请日：2012-03-19
申请人： Takuya Kawashima , Masahiro Oshikiri
发明人： Takuya Kawashima , Masahiro Oshikiri
IPC分类号： G10L19/00 , G10L19/12 , G10L19/02 , G10L19/06
CPC分类号： G10L19/002 , G10L19/0208 , G10L19/035 , G10L19/06 , G10L19/12
摘要： Provided is a speech/audio encoding apparatus with which it is possible to code a significant frequency domain region with high precision, and to enable high audio quality. A speech/audio encoding apparatus codes a linear prediction coefficient. A significant frequency domain region detection unit identifies a frequency domain region which is aurally significant from the linear prediction coefficient. A frequency domain region repositioning unit repositions the significant frequency domain region which is identified by the significant frequency domain region detection unit. A bit allocation computation unit determines a coding bit allocation on the basis of the significant frequency domain region which is repositioned by the frequency domain region repositioning unit.
摘要翻译：提供了一种语音/音频编码装置，其可以以高精度对重要的频域区域进行编码，并且能够实现高音频质量。语音/音频编码装置对线性预测系数进行编码。显着的频域区域检测单元从线性预测系数识别听觉显着的频域区域。频域区域重新定位单元重新定位由有效频域区域检测单元识别的显着频域区域。比特分配计算单元基于由频域区域重定位单元重定位的有效频域区域来确定编码比特分配。

9. 发明授权

US08924208B2 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：US08924208B2
公开(公告)日：2014-12-30
申请号：US13521112
申请日：2011-01-12
申请人： Tomofumi Yamanashi , Masahiro Oshikiri
发明人： Tomofumi Yamanashi , Masahiro Oshikiri
IPC分类号： G10L19/02 , G10L19/032
CPC分类号： G10L19/0208 , G10L19/032
摘要： An encoding device and encoding method improve a quality of a decoded signal under very low bit rate conditions using a small amount of computation. A spectrum corrector performs correction processing on a subspectrum in each subband in such a manner that samples equal to or greater than a subspectrum average value are left unchanged and samples smaller than the subspectrum average value are replaced by zero. As a result of this, it is possible to significantly reduce the number of bits required to quantize the subspectrums without a substantial reduction in quality in a local searcher and in a multi-rate indexer.
摘要翻译：编码装置和编码方法使用少量的计算在非常低的比特率条件下提高解码信号的质量。频谱校正器以等于或大于子频谱平均值的样本保持不变并且将小于子频谱平均值的样本替换为零的方式对每个子带中的子频谱进行校正处理。因此，可以显着地减少量化子频段所需的位数，而不会在本地搜索器和多速率分度器中显着降低质量。

10. 发明授权

US08898053B2 Encoding device, decoding device, and methods therein 有权
标题翻译：编码设备，解码设备及其中的方法
公开(公告)号：US08898053B2
公开(公告)日：2014-11-25
申请号：US13318951
申请日：2010-05-21
申请人： Masahiro Oshikiri
发明人： Masahiro Oshikiri
IPC分类号： G10L19/00 , G10L19/005 , G10L19/02 , G10L19/24
CPC分类号： G10L19/005 , G10L19/008 , G10L19/0204 , G10L19/0208 , G10L19/24
摘要： An encoding device, a decoding device, and related methods are provided that eliminate the loss of synchronization of the adaptive filters of a terminal at the encoding end and a terminal at the decoding end caused by transmission errors. Deterioration of the sound quality is suppressed when a multiple channel signal is encoded with high efficiency using an adaptive filter. In the terminal at the encoding end, a buffer stores updated filter coefficients. When packet loss detection information indicating whether there is any packet loss in the terminal at the decoding end indicates that there is packet loss, a switch outputs the past filter coefficients of the previous (NX+1) frames from the buffer to an adaptive filter. The adaptive filter uses the past filter coefficients of the previous (NX+1) frames to conduct filtering.
摘要翻译：提供了一种编码装置，解码装置和相关方法，其消除了编码端的终端的自适应滤波器与由传输错误引起的解码端的终端的同步丢失。当使用自适应滤波器以高效率编码多声道信号时，抑制了声音质量的恶化。在编码端的终端中，缓冲器存储更新的滤波器系数。当指示在解码端的终端中是否存在任何分组丢失的分组丢失检测信息指示存在分组丢失时，交换机将先前（NX + 1）帧的过去滤波器系数从缓冲器输出到自适应滤波器。自适应滤波器使用先前（NX + 1）帧的过去滤波器系数进行滤波。

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式