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：US20120116780A1

公开(公告)日：2012-05-10

申请号：US13057219

申请日：2010-06-03

申请人： Minoru Tsuji ,  Toru Chinen

发明人： Minoru Tsuji ,  Toru Chinen

IPC分类号： G10L19/00

CPC分类号： G10L19/022 ,  G10L19/008 ,  G10L19/0212

摘要： The amount of computation in an acoustic signal decoding apparatus for a signal transform process from a frequency domain to a time domain is reduced while realizing the generation of appropriate output acoustic signals.An output control unit 340 receives, from a code string separating unit 310, pieces of window information including a window shape showing the type window function related to a windowing process of input channels, and, if all the pieces of window information are the same, switches the connections of output switching units 351 to 355 to a frequency domain mixing unit 510. The frequency domain mixing unit 510 mixes frequency domain signals of five channels supplied from a decoding/dequantizing unit 320 on the basis of downmix information that causes the number of output channels to be smaller than the number of input channels. IMDC/windowing processing units 521 and 522 transform frequency domain signals of two channels output from the frequency domain mixing unit 510 into time domain signals, thereby outputting the signals as acoustic signals of two channels.

摘要翻译： 用于从频域到时域的信号变换处理的声信号解码装置中的计算量减少，同时实现适当的输出声信号的产生。 输出控制单元340从代码串分离单元310接收包括显示与输入通道的加窗处理相关的类型窗函数的窗口形状的窗口信息，并且如果所有窗口信息相同， 将输出切换单元351至355的连接切换到频域混合单元510.频域混合单元510根据下混信息混合从解码/去量化单元320提供的五个信道的频域信号， 输出通道小于输入通道的数量。 IMDC /开窗处理单元521和522将从频域混合单元510输出的两个声道的频域信号转换为时域信号，从而将该信号作为两声道的声信号输出。

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：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。

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：US20140205101A1

公开(公告)日：2014-07-24

申请号：US14237933

申请日：2012-08-14

申请人： Yuki Yamamoto ,  Toru Chinen

发明人： Yuki Yamamoto ,  Toru Chinen

IPC分类号： G10L19/008

CPC分类号： G10L19/008 ,  G10L19/0208 ,  G10L19/22 ,  G10L21/038

摘要： The present technology relates to an encoding device and method, a decoding device and method, and a program that enable audio of a high audio quality to be obtained with a smaller code amount.The encoding device multiplexes low frequency encoding data obtained by encoding a low frequency component of an input signal and high frequency encoding data obtained by encoding data including an estimation coefficient to acquire a high frequency component of the input signal by estimation and outputs multiplexed data. When the input signal is encoded, a calculation unit calculates pseudo high frequency subband power to be an estimation value of power of the high frequency component from an estimation coefficient selected in a frame immediately before a frame of a processing target and the high frequency component of the input signal. In addition, a determination unit determines whether reuse of the estimation coefficient of the immediately previous frame is enabled in the frame of the processing target, on the basis of a comparison result of the calculated pseudo high frequency subband power and actual high frequency component power. The present invention can be applied to the encoding device.

摘要翻译： 本技术涉及编码装置和方法，解码装置和方法以及以较小代码量获得高音频质量的音频的程序。 编码装置对通过对输入信号的低频分量进行编码而获得的低频编码数据和通过对包含估计系数进行编码的数据而获得的高频编码数据进行复用，从而通过推定获取输入信号的高频分量，并输出复用数据。 当输入信号被编码时，计算单元将伪高频子带功率从紧邻处理目标的帧之前的帧中选择的估计系数和高频分量的高频分量计算为高频分量的功率估计值 输入信号。 此外，确定单元基于所计算的伪高频子带功率和实际高频分量功率的比较结果，确定在处理对象的帧中是否启用了紧前一帧的估计系数的再利用。 本发明可以应用于编码装置。

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：US20130058500A1

公开(公告)日：2013-03-07

申请号：US13616944

申请日：2012-09-14

申请人： Yuhki MITSUFUJI ,  Toru Chinen ,  Hiroyuki Honma ,  Kenichi Makino

发明人： Yuhki MITSUFUJI ,  Toru Chinen ,  Hiroyuki Honma ,  Kenichi Makino

IPC分类号： H03G5/00

CPC分类号： G10L21/038 ,  G10L19/24

摘要： A player apparatus for playing an input signal after band-extending the input signal includes: an extension controller to determine an extension start band for the input signal in accordance with information relating to the input signal; and a band divider to divide the input signal into a plurality of sub-band signals. The frequency band is extended on the basis of a plurality of the sub-band signals on a side lower than the extension start band, among the plurality of sub-band signals into which the input signal is band-divided by the band divider.

摘要翻译： 用于在扩展输入信号之后播放输入信号的播放器装置包括：扩展控制器，用于根据与输入信号相关的信息确定输入信号的扩展开始频带; 以及分频器，用于将输入信号分成多个子带信号。 在输入信号被频带分频器分频的多个子频带信号中，基于比扩展开始频带低的一侧的多个子频带信号来扩展频带。

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。