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1.发明授权Audio coding device, method, and computer-readable recording medium storing program 有权音频编码装置，方法和计算机可读记录介质存储程序公开(公告)号：US09111533B2
公开(公告)日：2015-08-18
申请号：US13297536
申请日：2011-11-16
IPC分类号： G10L19/02 , G10L19/035 , G10L19/00 , G10L19/008
CPC分类号： G10L19/035 , G10L19/0017 , G10L19/008 , G10L19/0204
摘要： An audio coding device includes a time-to-frequency converter that performs time-to-frequency conversion on each frame of a signal in at least one channel included in an audio signal in a predetermined length of time in order to convert the signal in the at least one channel to a frequency signal; a complexity calculator that calculates complexity of the frequency signal for each of the at least one channel. The audio further includes a bit allocation controller that determines a number of bits to be allocated to each of at least one channel so that more bits are allocated to the each of the at least one channel as the complexity of the each of at least one channel increases, and increases the number of bits to be allocated as an estimation error in the number; and a coder that codes the frequency signal.
摘要翻译： 一种音频编码装置包括一个时间 - 频率转换器，它以预定的时间长度在包括在音频信号中的至少一个信道中的信号的每个帧上进行时间 - 频率转换，以便将信号转换成 至少一个频道到频率信号; 复杂度计算器，其计算所述至少一个信道中的每一个的频率信号的复杂度。 音频还包括位分配控制器，其确定要被分配给至少一个信道中的每一个的比特数，使得更多的比特被分配给至少一个信道中的每一个，因为至少一个信道中的每一个的复杂度 增加并增加要分配的比特数作为该数量中的估计误差; 以及编码频率信号的编码器。
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公开(公告)号：US08818764B2
公开(公告)日：2014-08-26
申请号：US13074379
申请日：2011-03-29
IPC分类号： H03F1/26
CPC分类号： G10L19/008
摘要： A downmixing device includes: a matrix conversion unit configured to perform a matrix operation for an input signal; a rotation correction unit configured to rotate an output signal of the matrix conversion unit; a spatial information extraction unit configured to extract spatial information from the output signal of the rotation correction unit; and an error calculation unit configured to calculate an error amount of the matrix operation result for the input signal by performing a matrix operation for the output signal of the rotation correction unit and the spatial information extracted by the spatial information extraction unit using a matrix that is inverse to the matrix used for the matrix operation by the matrix conversion unit.
摘要翻译： 降混装置包括：矩阵转换单元，被配置为对输入信号执行矩阵运算; 旋转校正单元，被配置为旋转矩阵转换单元的输出信号; 空间信息提取单元，被配置为从旋转校正单元的输出信号中提取空间信息; 以及误差计算单元，被配置为通过对旋转校正单元的输出信号执行矩阵运算和由空间信息提取单元提取的空间信息，使用矩阵运算结果来计算输入信号的矩阵运算结果的误差量， 与矩阵转换单元用于矩阵运算的矩阵相反。
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3.发明申请AUDIO ENCODING DEVICE, AUDIO ENCODING METHOD, AND COMPUTER-READABLE MEDIUM STORING AUDIO-ENCODING COMPUTER PROGRAM 审中-公开音频编码设备，音频编码方法和计算机可读媒体存储音频编码计算机程序公开(公告)号：US20120078640A1
公开(公告)日：2012-03-29
申请号：US13176932
申请日：2011-07-06
IPC分类号： G10L19/00
CPC分类号： G10L19/0212 , G10L19/008
摘要： An audio encoding device includes, a time-frequency transformer that transforms signals of channels, a first spatial-information determiner that generates a frequency signal of a third channel, a second spatial-information determiner that generates a frequency signal of the third channel, a similarity calculator that calculates a similarity between the frequency signal of the at least one first channel and the frequency signal of the at least one second channel, a phase-difference calculator that calculates a phase difference between the frequency signal of the at least one first channel and the signal of the at least one second channel, a controller that controls determination of the first spatial information when the similarity and the phase difference satisfy a predetermined determination condition, a channel-signal encoder that encodes the frequency signal of the third channel, and a spatial-information encoder that encodes the first spatial information or the second spatial information.
摘要翻译： 音频编码装置包括：变换信道信号的时间频率变换器，产生第三信道的频率信号的第一空间信息确定器，产生第三信道的频率信号的第二空间信息确定器， 计算所述至少一个第一信道的频率信号与所述至少一个第二信道的频率信号之间的相似度的相似度计算器，计算所述至少一个第一信道的频率信号之间的相位差的相位差计算器， 以及所述至少一个第二信道的信号，控制器，当所述相似度和所述相位差满足预定的确定条件时，控制所述第一空间信息的确定;编码所述第三信道的频率信号的信道信号编码器，以及 编码第一空间信息或第二空间信息的空间信息编码器 ation。
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4.发明授权Audio coding device, audio coding method, and computer-readable recording medium storing audio coding computer program 有权音频编码装置，音频编码方法和存储音频编码计算机程序的计算机可读记录介质公开(公告)号：US09131290B2
公开(公告)日：2015-09-08
申请号：US13362317
申请日：2012-01-31
IPC分类号： G10L19/025 , H04R3/00
CPC分类号： H04R3/00 , G10L19/025
摘要： An audio coding device includes a time frequency transform unit that, with respect to each of a plurality of channels included in an audio signal, generates a time frequency signal indicating frequency components at each time by performing a time frequency transform on a signal of the channel; a transient detection unit that detects a transient with respect to each of the plurality of channels so as to obtain a transient detection time; a transient time correction unit that, when a difference in transient detection times between an early detection channel in which the transient detection time is earliest and a late detection channel that is a channel other than the early detection channel among the plurality of channels is within a range in which the transient; a grid determination unit that, with respect to each of the plurality of channels, and a coding unit that codes.
摘要翻译： 音频编码装置包括：时频变换部，对于包含在音频信号中的多个频道中的每一个，通过对信道的信号进行时间频率变换，生成表示各时刻频率分量的时间频率信号 ; 瞬态检测单元，其针对所述多个通道中的每一个检测瞬态，以获得瞬时检测时间; 瞬时时间校正单元，其中当所述多个频道中的所述瞬时检测时间最早的早期检测信道与作为所述早期检测信道之外的信道的晚期检测信道之间的瞬时检测时间的差异在 短暂的范围; 对于多个信道中的每个信道的网格确定单元和对编码的编码单元。
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公开(公告)号：US08862479B2
公开(公告)日：2014-10-14
申请号：US13009018
申请日：2011-01-19
IPC分类号： G10L19/00 , G10L19/008
CPC分类号： G10L19/008
摘要： An encoding device includes, an estimation unit to estimate a decoded signal of a plurality of channels based on a down-mix signal obtained by down-mixing an input signal of the plurality of channels, similarity between the channels of the input signal, and an intensity difference between the channels of the input signal; an analysis unit to analyze a phase of the input signal and a phase of the decoded signal; a calculation unit to calculate phase information based on the phase of the input signal and the phase of the decoded signal; and a coding unit to encode the similarity between the channels of the input signal, the intensity difference between the channels of the input signal, and the phase information.
摘要翻译： 一种编码装置包括：估计单元，用于基于通过对多个信道的输入信号进行下混合获得的下混合信号，估计多个信道的解码信号，输入信号的信道之间的相似度和 输入信号通道之间的强度差; 分析单元，用于分析输入信号的相位和解码信号的相位; 计算单元，用于基于输入信号的相位和解码信号的相位来计算相位信息; 以及编码单元，用于对输入信号的信道之间的相似度，输入信号的信道之间的强度差和相位信息进行编码。
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6.发明申请AUDIO CODING DEVICE, METHOD, AND COMPUTER-READABLE RECORDING MEDIUM STORING PROGRAM 有权音频编码设备，方法和计算机可读记录媒体存储程序公开(公告)号：US20120136657A1
公开(公告)日：2012-05-31
申请号：US13297536
申请日：2011-11-16
IPC分类号： G10L19/02
CPC分类号： G10L19/035 , G10L19/0017 , G10L19/008 , G10L19/0204
摘要： An audio coding device includes a time-to-frequency converter that performs time-to-frequency conversion on each frame of a signal in at least one channel included in an audio signal in a predetermined length of time in order to convert the signal in the at least one channel to a frequency signal; a complexity calculator that calculates complexity of the frequency signal for each of the at least one channel. The audio further includes a bit allocation controller that determines a number of bits to be allocated to each of at least one channel so that more bits are allocated to the each of the at least one channel as the complexity of the each of at least one channel increases, and increases the number of bits to be allocated as an estimation error in the number; and a coder that codes the frequency signal.
摘要翻译： 一种音频编码装置包括一个时间 - 频率转换器，它以预定的时间长度在包括在音频信号中的至少一个信道中的信号的每个帧上进行时间 - 频率转换，以便将信号转换成 至少一个频道到频率信号; 复杂度计算器，其计算所述至少一个信道中的每个信道的频率信号的复杂度。 音频还包括位分配控制器，其确定要被分配给至少一个信道中的每一个的比特数，使得更多的比特被分配给至少一个信道中的每一个，因为至少一个信道中的每一个的复杂度 增加并增加要分配的比特数作为该数量中的估计误差; 以及编码频率信号的编码器。
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公开(公告)号：US20110178806A1
公开(公告)日：2011-07-21
申请号：US13009018
申请日：2011-01-19
IPC分类号： G10L19/00
CPC分类号： G10L19/008
摘要： An encoding device includes, an estimation unit to estimate a decoded signal of a plurality of channels based on a down-mix signal obtained by down-mixing an input signal of the plurality of channels, similarity between the channels of the input signal, and an intensity difference between the channels of the input signal; an analysis unit to analyze a phase of the input signal and a phase of the decoded signal; a calculation unit to calculate phase information based on the phase of the input signal and the phase of the decoded signal; and a coding unit to encode the similarity between the channels of the input signal, the intensity difference between the channels of the input signal, and the phase information.
摘要翻译： 一种编码装置包括：估计单元，用于基于通过对多个信道的输入信号进行下混合获得的下混合信号，估计多个信道的解码信号，输入信号的信道之间的相似度和 输入信号通道之间的强度差; 分析单元，用于分析输入信号的相位和解码信号的相位; 计算单元，用于基于输入信号的相位和解码信号的相位来计算相位信息; 以及编码单元，用于对输入信号的信道之间的相似度，输入信号的信道之间的强度差和相位信息进行编码。
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8.发明授权公开(公告)号：US09070373B2
公开(公告)日：2015-06-30
申请号：US13614085
申请日：2012-09-13
IPC分类号： G10L21/038 , G10L25/90
CPC分类号： G10L21/038 , G10L25/90
摘要： A decoding device to decode a main signal code obtained by encoding low-frequency components of an original signal and to output a lowband main signal for output of a main signal, includes: a processor; and a memory which stores a plurality of instructions, which when executed by the processor, cause the processor to execute, decoding auxiliary information code obtained by encoding auxiliary information, the auxiliary information being for generating, from the lowband main signal, a highband main signal corresponding to high-frequency components of the original signal; decoding residual code obtained by encoding low-frequency components of a residual signal indicating error components produced by encoding of the original signal, and thereby output a lowband residual signal; generating a highband residual signal indicating high-frequency components of the residual signal, based on the lowband residual signal output by the residual decoder and the output auxiliary information; generating an output signal.
摘要翻译： 解码装置，对通过对原始信号的低频分量进行编码而得到的主信号编码，并输出用于输出主信号的低频带主信号，包括：处理器; 以及存储器，其存储多个指令，所述指令在由所述处理器执行时使所述处理器执行解码通过对辅助信息进行编码而获得的辅助信息代码，所述辅助信息用于从所述低频带主信号产生高频主信号 对应于原始信号的高频分量; 解码通过编码表示由原始信号编码产生的误差分量的残差信号的低频分量获得的残差码，从而输出低频带残留信号; 基于所述残差解码器输出的低频带残留信号和所述输出辅助信息，生成指示所述残留信号的高频成分的高频残留信号; 产生输出信号。
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9.发明申请AUDIO ENCODING DEVICE, AUDIO ENCODING METHOD, AND COMPUTER-READABLE RECORDING MEDIUM STORING AUDIO ENCODING COMPUTER PROGRAM 有权音频编码设备，音频编码方法和计算机可读记录媒体存储音频编码计算机程序公开(公告)号：US20130054253A1
公开(公告)日：2013-02-28
申请号：US13546292
申请日：2012-07-11
申请人： Miyuki Shirakawa , Yohei Kishi , Masanao Suzuki
发明人： Miyuki Shirakawa , Yohei Kishi , Masanao Suzuki
IPC分类号： G10L19/00
CPC分类号： G10L19/008 , H04S2400/03
摘要： An audio encoding device includes a time-frequency converting unit that conducts time-frequency conversion of channel signals included in an audio signal having a plurality of channels in frame units having a certain length of time to convert the channel signals to respective frequency signals; a downmixing unit that generates a main signal representing a major component of a first channel and a second channel among the plurality of channels, and a residual signal that is a component orthogonal to the main signal; a weight determining unit that obtains a decoding value predicted and a decoding value predicted, obtains signal components affecting each other between the first channel and the second channel; a weighting unit that uses the weighting coefficient; a residual signal encoding unit that encodes the weighted residual signal the weighting coefficient; and a main signal encoding unit that encodes the main signal.
摘要翻译： 音频编码装置包括：时间 - 频率转换单元，其对具有一定时间长度的帧单位的具有多个信道的音频信号中包含的信道信号进行时频转换，以将频道信号转换成各个频率信号; 降混单元，其生成表示多个通道中的第一通道和第二通道的主要部件的主信号，以及作为与主信号正交的分量的残差信号; 获得预测解码值和预测解码值的权重确定单元获得在第一信道和第二信道之间相互影响的信号分量; 使用加权系数的加权单元; 剩余信号编码单元，对所述加权残差信号进行加权系数的编码; 以及对主信号进行编码的主信号编码单元。
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10.发明授权Audio encoding device, audio encoding method, and computer-readable recording medium storing audio encoding computer program for encoding audio using a weighted residual signal 有权音频编码装置，音频编码方法以及存储使用加权残差信号对音频进行编码的音频编码计算机程序的计算机可读记录介质公开(公告)号：US08831960B2
公开(公告)日：2014-09-09
申请号：US13546292
申请日：2012-07-11
申请人： Miyuki Shirakawa , Yohei Kishi , Masanao Suzuki
发明人： Miyuki Shirakawa , Yohei Kishi , Masanao Suzuki
CPC分类号： G10L19/008 , H04S2400/03
摘要： An audio encoding device includes a time-frequency converting unit that conducts time-frequency conversion of channel signals included in an audio signal having a plurality of channels in frame units having a certain length of time to convert the channel signals to respective frequency signals; a downmixing unit that generates a main signal representing a major component of a first channel and a second channel among the plurality of channels, and a residual signal that is a component orthogonal to the main signal; a weight determining unit that obtains a decoding value predicted and a decoding value predicted, obtains signal components affecting each other between the first channel and the second channel; a weighting unit that uses the weighting coefficient; a residual signal encoding unit that encodes the weighted residual signal the weighting coefficient; and a main signal encoding unit that encodes the main signal.
摘要翻译： 音频编码装置包括：时间 - 频率转换单元，其对具有一定时间长度的帧单位的具有多个信道的音频信号中包含的信道信号进行时频转换，以将信道信号转换成各个频率信号; 降混单元，其生成表示多个通道中的第一通道和第二通道的主要部件的主信号，以及作为与主信号正交的分量的残差信号; 获得预测解码值和预测解码值的权重确定单元获得在第一信道和第二信道之间相互影响的信号分量; 使用加权系数的加权单元; 剩余信号编码单元，对所述加权残差信号进行加权系数的编码; 以及对主信号进行编码的主信号编码单元。
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