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：US08825495B2

公开(公告)日：2014-09-02

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：US20130208902A1

公开(公告)日：2013-08-15

申请号：US13877192

申请日：2011-10-05

申请人： Yuki Yamamoto ,  Toru Chinen

发明人： Yuki Yamamoto ,  Toru Chinen

IPC分类号： G10L19/008

CPC分类号： G10L21/0388 ,  G10L19/008 ,  G10L19/0208 ,  G10L25/18 ,  G10L25/21

摘要： The present invention relates to an encoding device and method, and a decoding device and method, and a program which enable music signals to be played with higher sound quality by expanding a frequency band.A band pass filter divides an input signal into multiple subband signals, a feature amount calculating circuit calculates feature amount using at least any one of the divided multiple subband signals and the input signal, a high-frequency subband power estimating circuit calculates an estimated value of high-frequency subband power based on the calculated feature amount, and a high-frequency signal generating circuit generates a high-frequency signal component based on the multiple subband signals divided by the band pass filter and the estimated value of the high-frequency subband power calculated by the high-frequency subband power estimating circuit. A frequency band expanding device expands the frequency band of the input signal using the high-frequency signal component generated by the high-frequency signal generating circuit. The present invention may be applied to a frequency band expanding device, encoding device, decoding device, and so forth, for example.

摘要翻译： 本发明涉及一种编码装置和方法，以及解码装置和方法以及通过扩展频带使音乐信号以更高音质播放的程序。 带通滤波器将输入信号划分成多个子带信号，特征量计算电路使用划分的多个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计算估计值 基于计算出的特征量的高频子带功率，高频信号生成电路基于由带通滤波器分割的多个子带信号和高频子带功率的估计值，生成高频信号成分 由高频子带功率估计电路计算出。 频带扩展装置使用由高频信号发生电路产生的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，编码装置，解码装置等。

公开(公告)号：US20130124214A1

公开(公告)日：2013-05-16

申请号：US13498234

申请日：2011-07-27

申请人： Yuki Yamamoto ,  Toru Chinen ,  Mitsuyuki Hatanaka

发明人： Yuki Yamamoto ,  Toru Chinen ,  Mitsuyuki Hatanaka

IPC分类号： G10L19/02

CPC分类号： G10L19/02 ,  G10L19/26 ,  G10L21/038

摘要： A method, system, and computer program product for processing an encoded audio signal is described. In one exemplary embodiment, the system receives an encoded low-frequency range signal and encoded energy information used to frequency shift the encoded low-frequency range signal. The low-frequency range signal is decoded and an energy depression of the decoded signal is smoothed. The smoothed low-frequency range signal is frequency shifted to generate a high-frequency range signal. The low-frequency range signal and high-frequency range signal are then combined and outputted.

摘要翻译： 描述了用于处理编码音频信号的方法，系统和计算机程序产品。 在一个示例性实施例中，系统接收编码的低频范围信号和用于对编码的低频范围信号进行频移的编码能量信息。 低频范围信号被解码，解码信号的能量下降被平滑化。 平滑的低频范围信号被频移以产生高频范围信号。 然后组合并输出低频范围信号和高频范围信号。

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：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：US09294062B2

公开(公告)日：2016-03-22

申请号：US14239797

申请日：2012-09-03

申请人： Mitsuyuki Hatanaka ,  Toru Chinen

发明人： Mitsuyuki Hatanaka ,  Toru Chinen

IPC分类号： H03G5/00 ,  H03G9/14 ,  H03G5/04 ,  H03G3/00 ,  H04R29/00 ,  H03G5/02 ,  H03G5/16

CPC分类号： H03G9/14 ,  H03G3/001 ,  H03G5/025 ,  H03G5/04 ,  H03G5/165 ,  H04R29/00

摘要： The present technique relates to a sound processing apparatus, a method, and a program capable of alleviating degradation of the quality of sound in a case where the gain of a sound signal is amplified.When equalizer processing for adjusting the gain of each frequency band of an input signal on the basis of a gain setting value is performed, an input signal is attenuated by an input attenuation amount derived from the gain setting value, and the equalizer processing is performed on the input signal attenuated. The amount of amplification of the gain of the input signal in the equalizer processing is estimated on the basis of the gain setting value and a weight coefficient of each frequency band derived from a generally-available music signal prepared in advance, and a difference of the estimation value and the input attenuation amount is calculated as a gain correction amount. Further, nonlinear amplification processing is performed on the input signal so as to actually amplify the input signal, which has been subjected to the equalizer processing, by a gain correction amount, and an output signal is obtained. The present technique can be applied to a sound processing apparatus.

摘要翻译： 本技术涉及在扩大声音信号的增益的情况下能够减轻声音质量劣化的声音处理装置，方法和程序。 当执行用于根据增益设定值调整输入信号的每个频带的增益的均衡器处理时，输入信号被从增益设定值导出的输入衰减量衰减，并且进行均衡器处理 输入信号衰减。 基于从预先准备的通常可用的音乐信号导出的每个频带的增益设定值和权重系数来估计均衡器处理中的输入信号的增益的放大量，以及 估计值和输入衰减量被计算为增益校正量。 此外，对输入信号进行非线性放大处理，以便实际上将经过均衡器处理的输入信号放大增益校正量，并获得输出信号。 本技术可以应用于声音处理装置。

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.