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。

公开(公告)号：US08364474B2

公开(公告)日：2013-01-29

申请号：US13010981

申请日：2011-01-21

申请人： Hiroyuki Honma ,  Toru Chinen

发明人： Hiroyuki Honma ,  Toru Chinen

IPC分类号： G10L21/00

CPC分类号： H04B1/667 ,  G10L19/02

摘要： A signal encoding device for encoding an input time-series signal includes: partitioning means; low-frequency encoding means; high-frequency gain information generating means; low-frequency reference value information generating means; high-frequency gain difference information generating means; high-frequency gain difference information encoding means; and multiplexing means.

摘要翻译： 用于编码输入时间序列信号的信号编码装置包括：分割装置; 低频编码手段; 高频增益信息发生装置; 低频参考值信息产生装置; 高频增益差信息发生装置; 高频增益差信息编码装置; 和多路复用装置。

公开(公告)号：US08144804B2

公开(公告)日：2012-03-27

申请号：US11456242

申请日：2006-07-10

申请人： Toru Chinen ,  Hiroyuki Honma

发明人： Toru Chinen ,  Hiroyuki Honma

IPC分类号： H04L27/00

CPC分类号： H04L27/00 ,  G10L19/0204

摘要： The encoding apparatus generates information for generating a high quality high frequency sub-band signal when expanding the frequency band at the decoding apparatus. A signal encoding apparatus divides an input time series signal into a plurality of sub-bands and encodes a low frequency sub-band signal to generate encoded data of the low frequency sub-band signal. Concurrently, it compares the frequency amplitude peak of the new high frequency sub-band signal generated from the low frequency sub-band signal and the original high frequency sub-band signal and generates frequency amplitude peak information of the high frequency sub-band signal. Similarly, it compares the gain of the new high frequency sub-band signal generated by using the low frequency sub-band signal and the original high frequency sub-band signal and generates gain information of the high frequency sub-band signal. Subsequently, the signal encoding apparatus multiplexes the encoded data of the low frequency sub-band signal, the frequency amplitude peak information of the high frequency sub-band signal and the gain information of the high frequency sub-band signal and outputs compressed data.

摘要翻译： 编码装置在扩展解码装置的频带时生成用于生成高质量高频子带信号的信息。 信号编码装置将输入的时间序列信号分割为多个子带，并对低频子带信号进行编码，生成低频子带信号的编码数据。 同时，比较从低频子带信号和原始高频子带信号产生的新的高频子带信号的频率幅度峰值，并生成高频子带信号的频率幅度峰值信息。 类似地，它比较通过使用低频子带信号和原始高频子带信号产生的新的高频子带信号的增益，并产生高频子带信号的增益信息。 随后，信号编码装置将低频子带信号的编码数据，高频子带信号的频率振幅峰值信息和高频子带信号的增益信息进行复用，并输出压缩数据。

公开(公告)号：US20070150267A1

公开(公告)日：2007-06-28

申请号：US11613485

申请日：2006-12-20

申请人： Hiroyuki Honma ,  Toru Chinen

发明人： Hiroyuki Honma ,  Toru Chinen

IPC分类号： G10L19/14 ,  G10L21/00

CPC分类号： H04B1/667 ,  G10L19/02

摘要： A signal encoding device for encoding an input time-series signal includes: partitioning means; low-frequency encoding means; high-frequency gain information generating means; low-frequency reference value information generating means; high-frequency gain difference information generating means; high-frequency gain difference information encoding means; and multiplexing means.

摘要翻译： 用于编码输入时间序列信号的信号编码装置包括：分割装置; 低频编码手段; 高频增益信息发生装置; 低频参考值信息产生装置; 高频增益差信息发生装置; 高频增益差信息编码装置; 和多路复用装置。

公开(公告)号：US08340213B2

公开(公告)日：2012-12-25

申请号：US13399103

申请日：2012-02-17

申请人： Toru Chinen ,  Hiroyuki Honma

发明人： Toru Chinen ,  Hiroyuki Honma

IPC分类号： H04L27/00

CPC分类号： H04L27/00 ,  G10L19/0204

摘要： An encoding apparatus that divides an input time series signal into a plurality of sub-bands and encodes a low frequency sub-band signal to generate encoded data of the low frequency sub-band signal. Concurrently, it compares the frequency amplitude peak of the new high frequency sub-band signal generated from the low frequency sub-band signal and the original high frequency sub-band signal and generates frequency amplitude peak information of the high frequency sub-band signal. It compares the gain of the new high frequency sub-band signal generated by using the low frequency sub-band signal and the original high frequency sub-band signal and generates gain information of the high frequency sub-band signal. Subsequently, the signal encoding apparatus multiplexes the encoded data of the low frequency sub-band signal, the frequency amplitude peak information of the high frequency sub-band signal and the gain information of the high frequency sub-band signal and outputs compressed data.

摘要翻译： 一种编码装置，其将输入的时间序列信号分割为多个子带，并对低频子带信号进行编码，以生成低频子带信号的编码数据。 同时，比较从低频子带信号和原始高频子带信号产生的新的高频子带信号的频率幅度峰值，并生成高频子带信号的频率幅度峰值信息。 它比较通过使用低频子带信号和原始高频子带信号产生的新的高频子带信号的增益，并产生高频子带信号的增益信息。 随后，信号编码装置将低频子带信号的编码数据，高频子带信号的频率振幅峰值信息和高频子带信号的增益信息进行复用，并输出压缩数据。

公开(公告)号：US20140172433A2

公开(公告)日：2014-06-19

申请号：US14006148

申请日：2012-03-23

申请人： Hiroyuki Honma ,  Toru Chinen ,  Yuki Yamamoto ,  Mitsuyuki Hatanaka

发明人： Hiroyuki Honma ,  Toru Chinen ,  Yuki Yamamoto ,  Mitsuyuki Hatanaka

IPC分类号： G10L19/008

CPC分类号： G10L19/008 ,  G10L19/002 ,  G10L19/0204 ,  G10L19/24

摘要： This technology relates to an encoding device, an encoding method, and a program capable of improving audio quality and more efficiently encoding audio. A first high-frequency encoding circuit encodes a high-frequency range based on a low-frequency subband signal and a high-frequency subband signal and obtains a high-frequency code amount. A low-frequency encoding circuit encodes a low-frequency signal with a code amount determined by the high-frequency code amount and a low-frequency decoding circuit decodes the encoded low-frequency signal. A subband dividing circuit divides a decoded low-frequency signal obtained by decoding into decoded low-frequency subband signals of a plurality of subbands and a second high-frequency encoding circuit generates a high-frequency code string such that a code amount of the high-frequency code string for obtaining a high-frequency component is not larger than the high-frequency code amount based on the decoded low-frequency subband signals and the high-frequency subband signals. The present invention is applicable to the encoding device.

摘要翻译： 该技术涉及能够改善音频质量并且更有效地编码音频的编码装置，编码方法和程序。 第一高频编码电路基于低频子带信号和高频子带信号对高频范围进行编码，并获得高频码量。 低频编码电路以由高频码量确定的码量对低频信号进行编码，低频解码电路解码编码的低频信号。 子带分割电路将通过解码获得的解码低频信号划分为多个子带的解码低频子带信号，第二高频编码电路生成高频编码串， 基于解码的低频子带信号和高频子带信号，用于获得高频分量的频率码串不大于高频编码量。 本发明可应用于编码装置。

公开(公告)号：US20120158411A1

公开(公告)日：2012-06-21

申请号：US13399103

申请日：2012-02-17

申请人： Toru Chinen ,  Hiroyuki Honma

发明人： Toru Chinen ,  Hiroyuki Honma

IPC分类号： G10L21/00

CPC分类号： H04L27/00 ,  G10L19/0204

摘要： An encoding apparatus that divides an input time series signal into a plurality of sub-bands and encodes a low frequency sub-band signal to generate encoded data of the low frequency sub-band signal. Concurrently, it compares the frequency amplitude peak of the new high frequency sub-band signal generated from the low frequency sub-band signal and the original high frequency sub-band signal and generates frequency amplitude peak information of the high frequency sub-band signal. It compares the gain of the new high frequency sub-band signal generated by using the low frequency sub-band signal and the original high frequency sub-band signal and generates gain information of the high frequency sub-band signal. Subsequently, the signal encoding apparatus multiplexes the encoded data of the low frequency sub-band signal, the frequency amplitude peak information of the high frequency sub-band signal and the gain information of the high frequency sub-band signal and outputs compressed data.

摘要翻译： 一种编码装置，其将输入的时间序列信号分割为多个子带，并对低频子带信号进行编码，以生成低频子带信号的编码数据。 同时，比较从低频子带信号和原始高频子带信号产生的新的高频子带信号的频率幅度峰值，并生成高频子带信号的频率幅度峰值信息。 它比较通过使用低频子带信号和原始高频子带信号产生的新的高频子带信号的增益，并产生高频子带信号的增益信息。 随后，信号编码装置将低频子带信号的编码数据，高频子带信号的频率振幅峰值信息和高频子带信号的增益信息进行复用，并输出压缩数据。

公开(公告)号：US20110119066A1

公开(公告)日：2011-05-19

申请号：US13010981

申请日：2011-01-21

申请人： Hiroyuki Honma ,  Toru Chinen

发明人： Hiroyuki Honma ,  Toru Chinen

IPC分类号： G10L19/00

CPC分类号： H04B1/667 ,  G10L19/02

摘要： A signal encoding device for encoding an input time-series signal includes: partitioning means; low-frequency encoding means; high-frequency gain information generating means; low-frequency reference value information generating means; high-frequency gain difference information generating means; high-frequency gain difference information encoding means; and multiplexing means.

摘要翻译： 一种编码输入时间序列信号的信号编码装置包括：分割装置; 低频编码手段; 高频增益信息发生装置; 低频参考值信息产生装置; 高频增益差信息发生装置; 高频增益差信息编码装置; 和多路复用装置。