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21. 发明申请

US20090262949A1 MULTI-CHANNEL ACOUSTIC SIGNAL PROCESSING DEVICE 有权
标题翻译：多通道声信号处理装置
公开(公告)号：US20090262949A1
公开(公告)日：2009-10-22
申请号：US12064975
申请日：2006-07-07
申请人： Yoshiaki Takagi , Kok Seng Chong , Takeshi Norimatsu , Shuji Miyasaka , Akihisa Kawamura , Kojiro Ono
发明人： Yoshiaki Takagi , Kok Seng Chong , Takeshi Norimatsu , Shuji Miyasaka , Akihisa Kawamura , Kojiro Ono
IPC分类号： H03G3/00
CPC分类号： G10L19/008 , G10L2021/02082
摘要： Provided is a multi-channel acoustic signal processing device by which loads of arithmetic operations are reduced. The multi-channel acoustic signal processing device (100) includes: a decorrelated signal generation unit (181), and a matrix operation unit (187) and a third arithmetic unit (186). The decorrelated signal generation unit (181) generates a decorrelated signal w′ indicating a sound which includes a sound indicated by an input signal x and reverberation, by performing reverberation processing on the input signal x. The matrix operation unit (187) and the third arithmetic unit (186) generate audio signals of m channels, by performing arithmetic operation on the input signal x and the decorrelated signal w′ generated by the decorrelated signal generation unit (181), using a matrix R3 which indicates distribution of a signal intensity level and distribution of reverberation.
摘要翻译：提供了一种减少算术运算负载的多声道声信号处理装置。多通道声信号处理装置（100）包括：解相关信号生成部（181），矩阵运算部（187）和第三运算部（186）。解相关信号生成单元（181）通过对输入信号x进行混响处理，生成表示包含由输入信号x表示的声音和混响的声音的解相关信号w'。矩阵运算单元（187）和第三运算单元（186）通过对输入信号x进行算术运算和由解相关信号生成单元（181）生成的去相关信号w'，使用矩阵R3，其指示信号强度水平的分布和混响的分布。

22. 发明申请

US20090240503A1 ACOUSTIC SIGNAL PROCESSING APPARATUS AND ACOUSTIC SIGNAL PROCESSING METHOD 有权
标题翻译：声音信号处理装置和声音信号处理方法
公开(公告)号：US20090240503A1
公开(公告)日：2009-09-24
申请号：US12066618
申请日：2006-10-03
申请人： Shuji Miyasaka , Yoshiaki Takagi , Takeshi Norimatsu , Akihisa Kawamura , Kojiro Ono , Kok Seng Chong
发明人： Shuji Miyasaka , Yoshiaki Takagi , Takeshi Norimatsu , Akihisa Kawamura , Kojiro Ono , Kok Seng Chong
IPC分类号： G10L21/00
CPC分类号： H04S3/02 , G10L19/008 , H04S2420/03
摘要： To provide an acoustic signal processing apparatus which can reduce the amount of calculation in matrix arithmetic.An acoustic signal processing apparatus (24) converts down-mixed acoustic signals of NI channels to acoustic signals of NO channels, where NO>NI. The acoustic signal processing apparatus includes: a first matrix arithmetic unit (241) for performing arithmetic on a matrix with K rows and NI columns, where NO>K≧NI, for the down-mixed acoustic signals of the NI channels, and outputting K signals obtained after the matrix arithmetic; K decorrelation units (242, 243) for generating signals incoherent, in terms of time characteristics, with the signals obtained after the matrix arithmetic, while maintaining frequency characteristics of the signals obtained after the matrix arithmetic; and a second matrix arithmetic unit (244) for performing arithmetic on a matrix with NO rows and (NI+K) columns for the down-mixed acoustic signals of the NI channels and for the K incoherent signals, and outputting the acoustic signals of the NO channels.
摘要翻译：提供可以减少矩阵运算中的计算量的声信号处理装置。声信号处理装置（24）将NI信道的混合声信号转换为NO信道的声信号，其中NO> NI。声信号处理装置包括：第一矩阵运算单元，用于对NI通道的下混合声信号执行具有K行和NI列的矩阵的运算，其中NO> K> = NI，并输出矩阵运算后得到的K信号; K去相关单元（242,243），用于在时间特性方面产生与矩阵运算之后获得的信号不相干的信号，同时保持在矩阵运算之后获得的信号的频率特性; 以及第二矩阵运算单元（244），用于对具有NO行和（NI + K）列的矩阵执行用于NI信道的下混合声信号和K个非相干信号的运算，并且输出无通道。

23. 发明申请

US20100235171A1 AUDIO DECODER 有权
标题翻译：音频解码器
公开(公告)号：US20100235171A1
公开(公告)日：2010-09-16
申请号：US11993066
申请日：2006-07-11
申请人： Yosiaki Takagi , Kok Seng Chong , Takeshi Norimatsu , Shuji Miyasaka , Akihisa Kawamura , Kojiro Ono
发明人： Yosiaki Takagi , Kok Seng Chong , Takeshi Norimatsu , Shuji Miyasaka , Akihisa Kawamura , Kojiro Ono
IPC分类号： G10L19/00
CPC分类号： G10L19/008 , G10L19/0204
摘要： Provided is an audio decoder which can reduce an amount of arithmetic operations while suppressing occurrence of aliasing noise. The audio decoder includes: a decoder (102) and an analysis filter bank (110) which generate, from a coded down-mixed signal, the first frequency band signal (x) corresponding to a down-mixed signal (M); a channel expansion unit (130) which converts the first frequency band signal (x) generated by the analysis filter bank (110) into output signals (y) corresponding to respective audio signals of N channels, using BC information; an synthesis filter bank (140) which performs band synthesis for the output signals (y) generate by the channel expansion unit (130) and thereby converts the output signals (y) into the respective audio signals of the N channels on a time axis; and an aliasing noise detection unit (120) which detects occurrence of aliasing noise in the first frequency band signal (x). The channel expansion unit (130) further prevents the aliasing noise from being included in the output signals (y), based on information detected by the aliasing noise detection unit (120).
摘要翻译：提供一种音频解码器，其可以在抑制混叠噪声的发生的同时减少算术运算量。音频解码器包括：解码器（102）和分析滤波器组（110），其从编码的下变频信号产生与下混合信号（M）对应的第一频带信号（x）; 信道扩展单元，其使用BC信息将由分析滤波器组（110）生成的第一频带信号（x）转换成对应于N个信道的各个音频信号的输出信号（y）; 合成滤波器组（140），对由所述信道扩展单元（130）产生的输出信号（y）进行频带合成，从而将输出信号（y）转换成时间轴上的N个信道的各个音频信号; 以及用于检测第一频带信号（x）中的混叠噪声的出现的混叠噪声检测单元（120）。信道扩展单元（130）还基于混叠噪声检测单元（120）检测到的信息进一步防止混叠噪声包含在输出信号（y）中。

24. 发明申请

US20090234657A1 ENERGY SHAPING APPARATUS AND ENERGY SHAPING METHOD 有权
标题翻译：能量成形装置和能量成形方法
公开(公告)号：US20090234657A1
公开(公告)日：2009-09-17
申请号：US12065378
申请日：2006-08-31
申请人： Yoshiaki Takagi , Kok Seng Chong , Takeshi Norimatsu , Shuji Miyasaka , Akihisa Kawamura , Kojiro Ono , Tomokazu Ishikawa
发明人： Yoshiaki Takagi , Kok Seng Chong , Takeshi Norimatsu , Shuji Miyasaka , Akihisa Kawamura , Kojiro Ono , Tomokazu Ishikawa
IPC分类号： G10L21/00
CPC分类号： G10L19/26 , G10L19/008 , G10L19/0204 , H04S2420/03
摘要： A temporal processing apparatus (energy shaping apparatus) (600a) includes: a splitter (601) splitting an audio signal, included in the sub-band domain, which are obtained through a hybrid time and frequency transformation into diffuse signals indicating reverberating components and direct signals indicating non-reverberating components; a downmix unit (604) generating a downmix signal by downmixing the direct signals; BPFs (605 and 606) respectively generating a bandpass downmix signal and bandpass diffuse signals, by performing bandpass processing on the downmix signal and the diffuse signals on a sub-band-to-sub-band basis, which are split on the sub-band basis; normalization processing units (607 and 608) respectively generating a normalized downmix signal and normalized diffuse signals by normalizing the bandpass downmix signal and the bandpass diffuse signals with regard to respective energy; a scale computation processing unit (609) computing, on a predetermined time slot basis, a scale factor indicating the magnitude of energy of the normalized downmix signal with respect to energy of the normalized diffuse signals; a calculating unit (611) generating scale diffuse signals by multiplying the normalized diffuse signals by the scale factor; a HPF (612) generating high-pass diffuse signals by performing high-pass processing on the scale diffuse signals; an adding unit (613) generating addition signals by adding the high-pass diffuse signals and the direct signals; and a synthesis filter bank (614) performing synthesis filter processing on the addition signals and transforming the addition signals into the time domains
摘要翻译：时间处理装置（能量整形装置）（600a）包括：分离器（601），将包括在子带域中的音频信号（通过混合时间和频率变换获得）分解成指示混响分量的漫射信号，并且直接表示非混响分量的信号; 下混合单元（604），通过将所述直接信号进行下混合来产生下混合信号; BPF（605和606）分别产生带通下混合信号和带通扩散信号，通过对分频在子带上的下混信号和扩频信号进行带通处理，分散在子带基础; 归一化处理单元（607和608），分别通过相对于各自的能量归一化带通下混合信号和带通漫射信号来产生归一化的下混合信号和归一化的扩散信号; 比例计算处理单元（609）在预定时隙的基础上计算指示归一化的下混合信号相对于归一化扩散信号的能量的能量的大小的比例因子; 计算单元（611），通过将归一化扩散信号乘以比例因子来生成缩放漫射信号; HPF（612）通过对刻度扩散信号进行高通处理来产生高通漫反射信号; 加法单元（613），通过加上高通漫反射信号和直接信号来产生加法信号; 以及合成滤波器组（614）对加法信号执行合成滤波处理，并将加法信号转换成时域

25. 发明授权

US07613306B2 Audio encoder and audio decoder 有权
标题翻译：音频编码器和音频解码器
公开(公告)号：US07613306B2
公开(公告)日：2009-11-03
申请号：US10586905
申请日：2005-02-09
申请人： Shuji Miyasaka , Yoshiaki Takagi , Kazutaka Abe
发明人： Shuji Miyasaka , Yoshiaki Takagi , Kazutaka Abe
IPC分类号： H04R5/00
CPC分类号： G10L19/008
摘要： An audio encoder, generating a stereo signal based on a multi-channel signal, includes a downmix unit for downmixing a multi-channel signal exceeding two channels to a two-channel stereo signal, a first coding unit for generating a first coded signal by coding the downmixed stereo signal, a second coding unit for generating a second coded signal by coding information to restore the downmixed stereo signal to a multi-channel signal, a code size calculating unit for calculating a code size of the second coded signal, and a first multiplexing unit for multiplexing the calculated code size in either the first coded signal or the second coded signal. Accordingly a decoder is able to easily extract a coded signal of the multi-channel signal based on the code size, and the decoder reproducing only the downmixed signal can be configured inexpensively.
摘要翻译：一种音频编码器，其基于多声道信号产生立体声信号，包括用于将超过两声道的多声道信号混合到双声道立体声信号的下混单元，用于通过编码产生第一编码信号的第一编码单元下混合立体声信号，第二编码单元，用于通过对信息进行编码以将下混合立体声信号恢复为多声道信号来产生第二编码信号;码量计算单元，用于计算第二编码信号的码量，复用单元，用于在第一编码信号或第二编码信号中复用所计算的码量。因此，解码器能够基于代码尺寸容易地提取多信道信号的编码信号，并且可以廉价地配置仅再现缩混信号的解码器。

26. 发明申请

US20070162278A1 Audio encoder and audio decoder 有权
标题翻译：音频编码器和音频解码器
公开(公告)号：US20070162278A1
公开(公告)日：2007-07-12
申请号：US10586905
申请日：2005-02-09
申请人： Shuji Miyasaka , Yoshiaki Takagi , Kazutaka Abe
发明人： Shuji Miyasaka , Yoshiaki Takagi , Kazutaka Abe
IPC分类号： G10L19/00
CPC分类号： G10L19/008
摘要： An audio encoder, generating a stereo signal based on a multi-channel signal, includes a downmix unit (100) for downmixing a multi-channel signal exceeding two channels to a two-channel stereo signal, a first coding unit (101) for generating a first coded signal by coding the downmixed stereo signal, a second coding unit (102) for generating a second coded signal by coding information to restore the downmixed stereo signal to a multi-channel signal, a code size calculating unit (103) for calculating a code size of the second coded signal, and a first multiplexing unit (104) for multiplexing the calculated code size in either the first coded signal or the second coded signal. Accordingly a decoder is able to easily extract a coded signal of the multi-channel signal based on the code size, and the decoder reproducing only the downmixed signal can be configured inexpensively.
摘要翻译：一种基于多声道信号生成立体声信号的音频编码器，包括用于将超过两声道的多声道信号混合到双声道立体声信号的下混单元（100），用于产生通过编码下混合立体声信号的第一编码信号，用于通过编码信息生成第二编码信号以将下混合立体声信号恢复为多声道信号的第二编码单元（102），用于计算第二编码信号的代码大小，以及用于在第一编码信号或第二编码信号中复用所计算的代码大小的第一复用单元（104）。因此，解码器能够基于代码尺寸容易地提取多信道信号的编码信号，并且可以廉价地配置仅再现缩混信号的解码器。

27. 发明授权

US09153241B2 Signal processing apparatus 有权
标题翻译：信号处理装置
公开(公告)号：US09153241B2
公开(公告)日：2015-10-06
申请号：US12438996
申请日：2007-11-29
申请人： Shuji Miyasaka , Michihiro Matsumoto
发明人： Shuji Miyasaka , Michihiro Matsumoto
IPC分类号： H04W4/00 , G10L19/16 , G10L21/038 , H04Q11/04 , G11B20/00
CPC分类号： G10L19/167 , G10L21/038 , G11B2020/00028 , H04Q11/0428
摘要： The signal processing apparatus inserts the header information in a frame to probably be the reproduction start point by including: the first and the second coding units that code an input signal per frame; the first header inserting unit that inserts the SBR header indicating management information of the coded signal represented by a sequence of frames, in each frame at a regular interval within the coded signal; the control unit that determines a frame in which the SBR header is inserted, independent of the frames in which the first header inserting unit inserts the SBR header; and the second header inserting unit that singly inserts the SBR header in the frame determined by the control unit.
摘要翻译：信号处理装置通过包括以下步骤将头部信息插入到可能是再现开始点的帧中：第一和第二编码单元，每帧编码输入信号; 第一标题插入单元，以编码信号内的规则间隔，插入表示由帧序列表示的编码信号的管理信息的SBR标题; 所述控制单元确定其中插入所述SBR报头的帧，与所述第一报头插入单元插入所述SBR报头的帧无关; 以及第二标题插入单元，其将SBR标题单独地插入由控制单元确定的帧中。

28. 发明申请

US20070239463A1 Encoding device, decoding device, and system thereof utilizing band expansion information 有权
公开(公告)号：US20070239463A1
公开(公告)日：2007-10-11
申请号：US11806971
申请日：2007-06-05
申请人： Shuji Miyasaka , Tomokazu Ishikawa , Yoshiaki Sawada
发明人： Shuji Miyasaka , Tomokazu Ishikawa , Yoshiaki Sawada
IPC分类号： G10L19/00
CPC分类号： G10L19/18 , G10L19/24
摘要： A decoding device (30a) comprises a narrow-band decoding unit (31) operable to reproduce a PCM signal (P1) from a narrow-band bit stream included in a wide-band bit stream (S0), a wide-band decoding unit (32) operable to reproduce a PCM signal (P2) having a frequency band which is wider than that of the PCM signal (P1) reproduced by the narrow-band decoding unit (31) from the narrow-band bit stream and a band expanding bit stream included in the wide band bit stream (S0) and a selecting unit (34) operable to select either the PCM signal (P1) reproduced by the narrow-band decoding unit (31) or the PCM signal (P2) reproduced by the wide-band decoding unit (32), and to output the selected sound digital signal.

29. 发明授权

US07243061B2 Multistage inverse quantization having a plurality of frequency bands 有权
标题翻译：具有多个频带的多级逆量化
公开(公告)号：US07243061B2
公开(公告)日：2007-07-10
申请号：US10954589
申请日：2004-10-01
申请人： Takeshi Norimatsu , Shuji Miyasaka , Yoshihisa Nakatoh , Mineo Tsushima , Tomokazu Ishikawa
发明人： Takeshi Norimatsu , Shuji Miyasaka , Yoshihisa Nakatoh , Mineo Tsushima , Tomokazu Ishikawa
IPC分类号： G10L19/02
CPC分类号： G10L19/032 , G10L19/0212 , G10L19/038
摘要： With respect to audio signal coding and decoding apparatuses, there is provided a coding apparatus that enables a decoding apparatus to reproduce an audio signal even through it does not use all of data from the coding apparatus, and a decoding apparatus corresponding to the coding apparatus. A quantization unit constituting a coding apparatus includes a first sub-quantization unit comprising sub-quantization units for low-band, intermediate-band, and high-band; a second sub-quantization unit for quantizing quantization errors from the first sub-quantization unit; and a third sub-quantization unit for quantizing quantization errors which have been processed by the first sub-quantization unit and the second sub-quantization unit.
摘要翻译：对于音频信号编码和解码装置，提供了一种编码装置，即使通过编码装置不使用全部数据，能够使解码装置再现音频信号，也可以使用与编码装置对应的解码装置。构成编码装置的量化单元包括：第一子量化单元，包括用于低频带，中频带和高频带的子量化单元; 第二子量化单元，用于量化来自第一子量化单元的量化误差; 以及用于量化由第一子量化单元和第二子量化单元处理的量化误差的第三子量化单元。

30. 发明授权

US07188133B2 Floating point number storage method and floating point arithmetic device 有权
标题翻译：浮点数存储方法和浮点运算器
公开(公告)号：US07188133B2
公开(公告)日：2007-03-06
申请号：US10405242
申请日：2003-04-03
申请人： Shuji Miyasaka , Tomokazu Ishikawa
发明人： Shuji Miyasaka , Tomokazu Ishikawa
IPC分类号： G06F7/487
CPC分类号： G06F7/4876 , G06F2207/3824
摘要： In order to provide a method or the like for storing floating point numbers to make it easier to manage the floating point numbers using a fixed point processor, when a real number x is represented by a*(2^n) where a mantissa is a and an exponent is n, the mantissa is stored as a fixed point number in the upper U bits of N-bit field (N≧(U+L)) and the exponent is stored as an integer in the lower L bits. For the multiplication of two real numbers represented in such a format, these two real numbers are multiplied as fixed point numbers so as to make only the upper significant bits of the multiplication result a mantissa, while these two real numbers are added as integers so as to make only the lower significant bits of the addition result an exponent. As a result, the multiplication result can be obtained in a floating point format.
摘要翻译：为了提供用于存储浮点数的方法等以使得使用固定点处理器更容易地管理浮点数，当实数x由*（2 ^ n）表示时，其中尾数为并且指数为n，尾数作为固定点数存储在N位字段（N> =（U + L））的高U位中，并且指数作为整数存储在较低的L位中。对于以这种格式表示的两个实数的乘法，将这两个实数乘以固定点数，以便仅使乘法结果的高有效位为尾数，而将这两个实数作为整数相加，以便以使相加结果的较低有效位成为指数。结果，可以以浮点格式获得乘法结果。

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