公开(公告)号：US08949119B2

公开(公告)日：2015-02-03

申请号：US13639338

申请日：2011-04-11

申请人： Yuki Yamamoto ,  Toru Chinen ,  Hiroyuki Honma ,  Yuhki Mitsufuji

发明人： Yuki Yamamoto ,  Toru Chinen ,  Hiroyuki Honma ,  Yuhki Mitsufuji

IPC分类号： G10L21/00

CPC分类号： G10L21/0205 ,  G10L19/0204 ,  G10L19/167 ,  G10L21/0388 ,  G10L25/18

摘要： The present invention relates to a signal processing apparatus and a signal processing method, an encoder and an encoding method, a decoder and a decoding method, and a program capable of reproducing music signal having a better sound quality by expansion of frequency band.A high band decoding circuit decodes high band encoded data outputs a coefficient table having coefficients for the respective high band sub-bands, which are specified by a coefficient index obtained as a result of decoding. A decoding high band sub-band power calculation circuit calculates decoded high band sub-band powers for the respective high band sub-bands based on low band signals and the coefficient table, and a decoded high band signal production unit produces decoded high band signals from these decoded high band sub-band powers. At this time, an extension and reduction unit newly produces or deletes coefficients of the coefficient table for the respective sub-bands to correspond to the number of sub-bands of the calculated decoded high band sub-band powers, thereby to extend or reduce the coefficient table. The present invention can be applied to a decoder.

摘要翻译： 本发明涉及一种信号处理装置和信号处理方法，编码器和编码方法，解码器和解码方法，以及能够通过扩展频带来再现具有更好音质的音乐信号的程序。 解码高频带编码数据的高频带解码电路输出具有各个高频带子带的系数的系数表，该系数表由作为解码结果而获得的系数索引指定。 解码高频带子频带功率计算电路基于低频带信号和系数表来计算各个高频带子频带的解码的高频带子频带功率，解码的高频带信号产生单元从 这些解码的高带子带功率。 此时，扩展和缩小单元新产生或删除各个子带的系数表的系数，以对应于计算出的解码的高带子带功率的子带的数量，从而扩展或减少 系数表。 本发明可以应用于解码器。

公开(公告)号：US20130030818A1

公开(公告)日：2013-01-31

申请号：US13639338

申请日：2011-04-11

申请人： Yuki Yamamoto ,  Toru Chinen ,  Hiroyuki Honma ,  Yuhki Mitsufuji

发明人： Yuki Yamamoto ,  Toru Chinen ,  Hiroyuki Honma ,  Yuhki Mitsufuji

IPC分类号： G10L21/00

CPC分类号： G10L21/0205 ,  G10L19/0204 ,  G10L19/167 ,  G10L21/0388 ,  G10L25/18

摘要： The present invention relates to a signal processing apparatus and a signal processing method, an encoder and an encoding method, a decoder and a decoding method, and a program capable of reproducing music signal having a better sound quality by expansion of frequency band.A high band decoding circuit decodes high band encoded data outputs a coefficient table having coefficients for the respective high band sub-bands, which are specified by a coefficient index obtained as a result of decoding. A decoding high band sub-band power calculation circuit calculates decoded high band sub-band powers for the respective high band sub-bands based on low band signals and the coefficient table, and a decoded high band signal production unit produces decoded high band signals from these decoded high band sub-band powers. At this time, an extension and reduction unit newly produces or deletes coefficients of the coefficient table for the respective sub-bands to correspond to the number of sub-bands of the calculated decoded high band sub-band powers, thereby to extend or reduce the coefficient table. The present invention can be applied to a decoder.

公开(公告)号：US20110137659A1

公开(公告)日：2011-06-09

申请号：US12739106

申请日：2009-08-28

申请人： Hiroyuki Honma ,  Toru Chinen ,  Yuki Yamamoto ,  Yuhki Mitsufuji ,  Kenichi Makino

发明人： Hiroyuki Honma ,  Toru Chinen ,  Yuki Yamamoto ,  Yuhki Mitsufuji ,  Kenichi Makino

IPC分类号： H04B1/10

CPC分类号： G10L21/038

摘要： The present invention relates to a frequency band extension apparatus and method, an encoding apparatus and method, a decoding apparatus and method, and a program, with which a music signal can be reproduced with higher sound quality by means of frequency band extension.Band-pass filters 13 obtain a plurality of subband signals from an input signal. A frequency envelope extracting circuit 14 extracts a frequency envelope from the plurality of subband signals obtained by the plurality of band-pass filters. A highband signal generating circuit 15 generates highband signal components on the basis of the frequency envelope obtained by the frequency envelope extracting circuit 14, and the plurality of subband signals obtained by the band-pass filters 13. A frequency band extension apparatus 10 extends the frequency band of the input signal on the basis of the highband signal components generated by the highband signal generating circuit 15. The present invention can be applied to, for example, a frequency band extension apparatus, an encoding apparatus, a decoding apparatus, and the like.

摘要翻译： 本发明涉及一种频带扩展装置和方法，编码装置和方法，解码装置和方法以及程序，通过频带扩展可以以更高的音质再现音乐信号。 带通滤波器13从输入信号中获得多个子带信号。 频率包络提取电路14从由多个带通滤波器获得的多个子带信号中提取频率包络。 高频信号发生电路15根据由频率包络提取电路14获得的频率包络以及由带通滤波器13获得的多个子带信号，生成高频带信号分量。频带扩展装置10将频率 基于由高频带信号发生电路15产生的高频带信号分量，输入信号的频带。本发明可以应用于例如频带扩展装置，编码装置，解码装置等 。

公开(公告)号：US09406312B2

公开(公告)日：2016-08-02

申请号：US13639325

申请日：2011-04-11

申请人： Yuki Yamamoto ,  Toru Chinen ,  Hiroyuki Honma ,  Yuhki Mitsufuji

发明人： Yuki Yamamoto ,  Toru Chinen ,  Hiroyuki Honma ,  Yuhki Mitsufuji

IPC分类号： G10L21/038 ,  G10L19/16 ,  G10L19/02

CPC分类号： G10L21/0388 ,  G10L19/0204 ,  G10L19/0208 ,  G10L19/167 ,  G10L21/038

摘要： Methods and apparatus for performing signal processing. The signal processing comprises demultiplexing input encoded data into data including information for a segment including frames and coefficient information for a coefficient selected in the frames of the segment, and low band encoded data, decoding the low band encoded data to produce a low band signal, selecting a coefficient of a frame to be processed from a plurality of the coefficients based on the data, calculating a high band sub-band power of a high band sub-band signal of each sub-band constituting a high band signal of the frame to be processed based on a low band sub-band signal of each sub-band constituting the low band signal of the frame to be processed and the selected coefficient, and producing the high band signal of the frame to be processed based on the high band sub-band power and the low band sub-band signal.

摘要翻译： 执行信号处理的方法和装置。 信号处理包括将输入的编码数据解复用为数据，该数据包括用于包含帧的片段的信息和用于在片段的帧中选择的系数的系数信息，以及低频带编码数据，解码低频带编码数据以产生低频带信号， 基于该数据从多个系数中选择要处理的帧的系数，计算构成该帧的高频带信号的每个子带的高频带子带功率的高频带子带功率， 基于构成要处理的帧的低频带信号的每个子带的低频带子信号和所选择的系数进行处理，并且基于高频带子产生要处理的帧的高频带信号 带功率和低频带子信号。

公开(公告)号：US08762135B2

公开(公告)日：2014-06-24

申请号：US12739106

申请日：2009-08-28

申请人： Hiroyuki Honma ,  Toru Chinen ,  Yuki Yamamoto ,  Yuhki Mitsufuji ,  Kenichi Makino

发明人： Hiroyuki Honma ,  Toru Chinen ,  Yuki Yamamoto ,  Yuhki Mitsufuji ,  Kenichi Makino

IPC分类号： G10L21/00 ,  G10L19/00

摘要： Provided is a frequency band extension apparatus and method, an encoding apparatus and method, a decoding apparatus and method, and a program. Band-pass filters obtain a plurality of lowband subband signals from an input signal. A frequency envelope extracting circuit extracts a frequency envelope from the plurality of lowband subband signals obtained by the plurality of band-pass filters. A highband signal generating circuit generates highband signal components on the basis of the frequency envelope obtained by the frequency envelope extracting circuit, and the plurality of subband signals obtained by the band-pass filters. A frequency band extension apparatus extends the frequency band of the input signal on the basis of the highband signal components generated by the highband signal generating circuit.

公开(公告)号：US20130028427A1

公开(公告)日：2013-01-31

申请号：US13639325

申请日：2011-04-11

申请人： Yuki Yamamoto ,  Toru Chinen ,  Hiroyuki Honma ,  Yuhki Mitsufuji

发明人： Yuki Yamamoto ,  Toru Chinen ,  Hiroyuki Honma ,  Yuhki Mitsufuji

IPC分类号： H04R5/00

CPC分类号： G10L21/0388 ,  G10L19/0204 ,  G10L19/0208 ,  G10L19/167 ,  G10L21/038

摘要： The present invention relates to a signal processing apparatus and a signal processing method, an encoder and an encoding method, a decoder and a decoding method, and a program capable of reproducing music signal having a better sound quality by expansion of frequency band.An encoder sets an interval including 16 frames as interval section to be processed, outputs high band encoded data for obtaining the high band component of an input signal and low band encoded data obtained by encoding the low band signal of the input signal for each section to be processed. In this case, for each frame, a coefficient used in estimation of the high band component is selected and the section to be processed is divided into continuous frame segments including continuous frames from which the coefficient with the same section to be processed is selected. In addition, high band encoded data is produced which includes data including information indicating a length of each continuous frame segment, information indicating the number of continuous frame segments included in the section to be processed and a coefficient index indicating the coefficient selected in each continuous frame segment. The present invention is applicable to the encoder.

摘要翻译： 本发明涉及一种信号处理装置和信号处理方法，编码器和编码方法，解码器和解码方法，以及能够通过扩展频带来再现具有更好音质的音乐信号的程序。 编码器将包括16帧的间隔设置为要处理的间隔部分，输出用于获得输入信号的高频带分量的高频带编码数据和通过将每个部分的输入信号的低频带信号编码而获得的低频带编码数据 被处理。 在这种情况下，对于每个帧，选择在高频分量的估计中使用的系数，并且将要处理的部分划分成包括连续帧的连续帧段，从中选择具有相同部分的系数的连续帧。 此外，产生高频带编码数据，其包括包括指示每个连续帧段的长度的信息的数据，指示包括在待处理区段中的连续帧段的数量的信息和指示在每个连续帧中选择的系数的系数索引 分割。 本发明可应用于编码器。

公开(公告)号：US09583112B2

公开(公告)日：2017-02-28

申请号：US13640500

申请日：2011-04-11

申请人： Yuki Yamamoto ,  Toru Chinen ,  Hiroyuki Honma ,  Yuhki Mitsufuji

发明人： Yuki Yamamoto ,  Toru Chinen ,  Hiroyuki Honma ,  Yuhki Mitsufuji

IPC分类号： H04S3/02 ,  G10L19/008 ,  H04R3/04 ,  G10L21/0388 ,  G10L19/16 ,  G10L19/02

CPC分类号： G10L19/008 ,  G10L19/0204 ,  G10L19/167 ,  G10L21/0388

摘要： The present invention relates to a signal processing apparatus and a signal processing method, an encoder and an encoding method, a decoder and a decoding method, and a program capable of reproducing music signal having a better sound quality by expansion of frequency band.A sampling frequency conversion unit converts a sampling frequency of an input signal, and a sub-band division circuit divides the input signal after the sampling conversion into sub-band signals of sub-bands having the number corresponding to the sampling frequency.A pseudo high band sub-band power calculation circuit calculates pseudo high band sub-band powers based on low band signals of the input signal and coefficient tables having coefficients for the respective high band sub-bands. A pseudo high band sub-band power difference calculation circuit compares high band sub-band powers and the pseudo high band sub-band powers to each other and selects a coefficient table from plural coefficient tables. In addition, a coefficient index which specifies the coefficient table is encoded and set as high band encoded data. The present invention can be applied to an encoder.

摘要翻译： 伪高带子带功率计算电路基于输入信号的低频带信号和具有各高频子带的系数的系数表来计算伪高频子带功率。 伪高带子带功率差计算电路将高频带子带功率和伪高频带子频带功率进行比较，并从多个系数表中选择系数表。 此外，指定系数表的系数索引被编码并设置为高频带编码数据。 本发明可以应用于编码器。

公开(公告)号：US09208795B2

公开(公告)日：2015-12-08

申请号：US13499559

申请日：2010-09-29

申请人： Yuki Yamamoto ,  Toru Chinen ,  Hiroyuki Honma ,  Yuhki Mitsufuji

发明人： Yuki Yamamoto ,  Toru Chinen ,  Hiroyuki Honma ,  Yuhki Mitsufuji

IPC分类号： H04J1/00 ,  G10L21/038 ,  G10L19/02

CPC分类号： G10L21/0388 ,  G10L19/0208 ,  G10L21/038

摘要： The present invention relates to a frequency band extending device and method, an encoding device and method, a decoding device and method, and a program, whereby music signals can be played with higher sound quality due to the extension of frequency bands.A bandpass filter 13 divides an input signal into multiple sub-band signals, a feature amount calculating circuit 14 calculates feature amount using at least one of the multiple divided sub-band signals and the input signal, a high frequency sub-band power estimating circuit 15 calculates an estimated value of a high frequency sub-band power based on the calculated feature amount, a high frequency signal generating circuit 16 generates a high frequency signal component based on the multiple sub-band signals divided by the bandpass filter 13, and the estimated value of the high frequency sub-band power calculated by the high frequency sub-band power estimating circuit 15. A frequency band extending device 10 extends the frequency band of the input signal using a high frequency signal component. The present invention may be applied to a frequency band extending device, for example.

摘要翻译： 本发明涉及一种频带扩展装置及方法，编码装置和方法，解码装置和方法以及程序，由此可以由于频带的扩展而以更高的音质播放音乐信号。 带通滤波器13将输入信号分割为多个子带信号，特征量计算电路14使用多个分频子带信号和输入信号中的至少一个来计算特征量，高频子带功率估计电路 基于计算出的特征量计算高频子带功率的估计值，高频信号生成电路16基于由带通滤波器13分割的多个子带信号生成高频信号分量， 由高频子带功率估计电路15计算的高频子带功率的估计值。频带扩展装置10使用高频信号分量来扩展输入信号的频带。 例如，本发明可以应用于频带扩展装置。

公开(公告)号：US20130202118A1

公开(公告)日：2013-08-08

申请号：US13640500

申请日：2011-04-11

申请人： Yuki Yamamoto ,  Toru Chinen ,  Hiroyuki Honma ,  Yuhki Mitsufuji

发明人： Yuki Yamamoto ,  Toru Chinen ,  Hiroyuki Honma ,  Yuhki Mitsufuji

IPC分类号： G10L19/008

CPC分类号： G10L19/008 ,  G10L19/0204 ,  G10L19/167 ,  G10L21/0388

摘要： The present invention relates to a signal processing apparatus and a signal processing method, an encoder and an encoding method, a decoder and a decoding method, and a program capable of reproducing music signal having a better sound quality by expansion of frequency band.A sampling frequency conversion unit converts a sampling frequency of an input signal, and a sub-band division circuit divides the input signal after the sampling conversion into sub-band signals of sub-bands having the number corresponding to the sampling frequency.A pseudo high band sub-band power calculation circuit calculates pseudo high band sub-band powers based on low band signals of the input signal and coefficient tables having coefficients for the respective high band sub-bands. A pseudo high band sub-band power difference calculation circuit compares high band sub-band powers and the pseudo high band sub-band powers to each other and selects a coefficient table from plural coefficient tables. In addition, a coefficient index which specifies the coefficient table is encoded and set as high band encoded data. The present invention can be applied to an encoder.

摘要翻译： 本发明涉及一种信号处理装置和信号处理方法，编码器和编码方法，解码器和解码方法，以及能够通过扩展频带来再现具有更好音质的音乐信号的程序。 采样频率转换单元转换输入信号的采样频率，子带分割电路将采样转换后的输入信号分成具有对应于采样频率的数字的子带的子带信号。 伪高带子带功率计算电路基于输入信号的低频带信号和具有各高频子带的系数的系数表来计算伪高频子带功率。 伪高带子带功率差计算电路将高频带子带功率和伪高频带子频带功率进行比较，并从多个系数表中选择系数表。 此外，指定系数表的系数索引被编码并设置为高频带编码数据。 本发明可以应用于编码器。

公开(公告)号：US20120243526A1

公开(公告)日：2012-09-27

申请号：US13499559

申请日：2010-09-29

申请人： Yuki Yamamoto ,  Toru Chinen ,  Hiroyuki Honma ,  Yuhki Mitsufuji

发明人： Yuki Yamamoto ,  Toru Chinen ,  Hiroyuki Honma ,  Yuhki Mitsufuji

IPC分类号： H04W4/00

CPC分类号： G10L21/0388 ,  G10L19/0208 ,  G10L21/038

摘要： The present invention relates to a frequency band extending device and method, an encoding device and method, a decoding device and method, and a program, whereby music signals can be played with higher sound quality due to the extension of frequency bands.A bandpass filter 13 divides an input signal into multiple sub-band signals, a feature amount calculating circuit 14 calculates feature amount using at least one of the multiple divided sub-band signals and the input signal, a high frequency sub-band power estimating circuit 15 calculates an estimated value of a high frequency sub-band power based on the calculated feature amount, a high frequency signal generating circuit 16 generates a high frequency signal component based on the multiple sub-band signals divided by the bandpass filter 13, and the estimated value of the high frequency sub-band power calculated by the high frequency sub-band power estimating circuit 15. A frequency band extending device 10 extends the frequency band of the input signal using a high frequency signal component. The present invention may be applied to a frequency band extending device, for example.

摘要翻译： 本发明涉及一种频带扩展装置及方法，编码装置和方法，解码装置和方法以及程序，由此可以由于频带的扩展而以更高的音质播放音乐信号。 带通滤波器13将输入信号分割为多个子带信号，特征量计算电路14使用多个分频子带信号和输入信号中的至少一个来计算特征量，高频子带功率估计电路 基于计算出的特征量计算高频子带功率的估计值，高频信号生成电路16基于由带通滤波器13分割的多个子带信号生成高频信号分量， 由高频子带功率估计电路15计算的高频子带功率的估计值。频带扩展装置10使用高频信号分量来扩展输入信号的频带。 例如，本发明可以应用于频带扩展装置。