公开(公告)号：US20080312913A1

公开(公告)日：2008-12-18

申请号：US11910308

申请日：2006-03-31

申请人： Masataka Goto

发明人： Masataka Goto

IPC分类号： G10L11/04

CPC分类号： G10L25/90 ,  G10G3/04 ,  G10H2210/066

摘要： A pitch-estimation method, a pitch-estimation system, and a pitch-estimation program are provided, which estimate a weight of a probability density function of a fundamental frequency and relative amplitude of a harmonic component through fewer computations than ever. In the improved pitch-estimation method, 1200 log2 h and exp[−(x−(F+1200 log2 h))2/2W2] in the following expression are computed in advance and then stored in a memory of a computer: c ′  ( t )  ( h  F , m )  1 2  π   W 2  exp ( - ( x - ( F + 1200   log 2  h ) ) 2 2  W 2 ) ( 61 ) The above expression is computed only with respect to a fundamental frequency F wherein x−(F+1200 log2 h) is close to zero. With this arrangement, computations to be performed may considerably be reduced, and computing time may accordingly be shortened.

公开(公告)号：US20070190973A1

公开(公告)日：2007-08-16

申请号：US11438374

申请日：2006-05-23

申请人： Masataka Goto ,  Yoshimichi Tanizawa

发明人： Masataka Goto ,  Yoshimichi Tanizawa

IPC分类号： H04M3/16

CPC分类号： H04M7/0069 ,  H04L63/0428 ,  H04L63/08 ,  H04L63/205 ,  H04M3/38 ,  H04M7/0078 ,  H04W12/0013 ,  H04W12/06

摘要： A base station has a wireless unit configured to perform wireless communication with a wireless terminal by using a predetermined protocol, and a control unit configured to select one of a plurality of security parameter sets relating to authentication schemes and encryption schemes used for the wireless communication with the wireless terminal at a predetermined timing to provide the selected security parameter set to the wireless terminal via the wireless unit.

摘要翻译： 基站具有被配置为通过使用预定协议来执行与无线终端的无线通信的无线单元，以及控制单元，被配置为选择与用于无线通信的认证方案和加密方案相关的多个安全参数集中的一个， 所述无线终端在预定定时处，以经由所述无线单元向所述无线终端提供所选择的安全参数。

公开(公告)号：US20070021959A1

公开(公告)日：2007-01-25

申请号：US10558608

申请日：2004-05-26

申请人： Masataka Goto

发明人： Masataka Goto

IPC分类号： G10L15/20

CPC分类号： G10L21/0272

摘要： The present invention relates to a device for removing a known acoustic signal that enables removal of the known acoustic signal when mixed acoustic signals including a plurality of acoustic signals are entered and a known acoustic signal similar to one of the mixed acoustic signals is specified. This device converts an input mixed acoustic signal m(t) and a known acoustic signal b′(t) respectively into an amplitude spectrum M(ω,t) and B′(ω,t) in their respective time frequency areas, and then removes a component corresponding to B′(ω,t) included in the M(ω,t) by means of subtraction. Thus, an amplitude after removal S(ω,t) is obtained. Since the component corresponding to B′(ω,t) included in M(ω,t) has been deformed due to various factors such as a positional shift overtime, a temporal change in frequency characteristics, and a temporal change in volume, a corrected amplitude spectrum B(ω,t) is used in subtraction. Last, using a phase of m(t) and S (ω,t), inverse conversion into a time area is performed, thereby obtaining a desired acoustic signal after removal s(t).

摘要翻译： 本发明涉及一种用于去除已知声信号的装置，当已经输入包括多个声信号的混合声信号并且指定了类似于混合声信号之一的已知声信号时，能够去除已知声信号。 该装置将输入混合声信号m（t）和已知声信号b'（t）分别转换成它们各自的时频区域中的振幅谱M（ω，t）和B'（ω，t），然后 通过减法去除对应于包含在M（ω，t）中的B'（ω，t）的分量。 因此，获得去除后的幅度S（ω，t）。 由于包含在M（ω，t）中的对应于B'（ω，t）的分量由于诸如位置偏移超时，频率特性的时间变化和体积的时间变化等各种因素而变形， 振幅谱B（ω，t）用于减法。 最后，使用m（t）和S（ω，t）的相位，执行到时间区域的逆转换，从而在去除s（t）之后获得期望的声学信号。

公开(公告)号：US07085535B2

公开(公告)日：2006-08-01

申请号：US10108504

申请日：2002-03-29

申请人： Masataka Goto ,  Masahiro Takagi ,  Naoki Esaka ,  Atsushi Inoue

发明人： Masataka Goto ,  Masahiro Takagi ,  Naoki Esaka ,  Atsushi Inoue

IPC分类号： H04B1/00 ,  H04B1/69 ,  H04L12/413 ,  H04J3/24 ,  H04Q7/24

CPC分类号： H04W72/02 ,  H04W72/085

摘要： A radio communication device is provided with a unit for acquiring a prediction information for a frequency, time or direction to be used by each one of the first radio control scheme of the radio communication device and a second radio control scheme of another surrounding radio communication device, and a unit for obtaining a predicted frequency, time or direction for which interferences between radio communications by the first radio control scheme and radio communications by the second radio control scheme are predicted to occur according to the prediction information, and control the radio communication unit to carry out radio communications by avoiding the predicted frequency, time or direction.

公开(公告)号：US07020120B2

公开(公告)日：2006-03-28

申请号：US10184880

申请日：2002-07-01

申请人： Atsushi Inoue ,  Masahiro Ishiyama ,  Atsushi Fukumoto ,  Yoshiyuki Tsuda ,  Toshio Okamoto ,  Masataka Goto ,  Yoshinari Kumaki

发明人： Atsushi Inoue ,  Masahiro Ishiyama ,  Atsushi Fukumoto ,  Yoshiyuki Tsuda ,  Toshio Okamoto ,  Masataka Goto ,  Yoshinari Kumaki

IPC分类号： H04Q7/24 ,  H04Q7/00 ,  H04L12/66 ,  H04L12/28

CPC分类号： H04L29/12216 ,  H04L29/12264 ,  H04L29/12311 ,  H04L61/2015 ,  H04L61/2046 ,  H04L61/2084 ,  H04L69/16 ,  H04L69/163 ,  H04W8/06 ,  H04W8/26 ,  H04W60/04 ,  H04W80/04 ,  H04W88/182

摘要： A mobile IP communication scheme in which the mobile computer can be operated using the mobile communication protocol such as Mobile IP even in the case where the home network is operated by the dynamic address allocation protocol such as DHCP is disclosed. The current location registration message to be transmitted by the mobile computer from the visited site to the mobile computer management device contains an information indicating that the dynamic address allocation has been received at the home network and an information capable of identifying the mobile computer, and the mobile computer management device carries out exchanges with the dynamic address management server on behalf of the mobile computer, so that the mobile computer which has received the dynamic address allocation at the home network can be operated at the visited site by using the mobile communication protocol.

公开(公告)号：US20050283361A1

公开(公告)日：2005-12-22

申请号：US11020030

申请日：2004-12-21

申请人： Kazuyoshi Yoshii ,  Hiroshi Okuno ,  Masataka Goto

发明人： Kazuyoshi Yoshii ,  Hiroshi Okuno ,  Masataka Goto

IPC分类号： G10L19/04 ,  G10L21/02

CPC分类号： G10L21/0364 ,  G10L19/04 ,  G10L21/0232

摘要： An apparatus and method for extracting a predetermined non-harmonic structured spectral component contained in an audio signal. Then, the extracted predetermined spectral component is increased or decreased. In this process, the spectrum of the audio signal is calculated by frequency analysis, so that a spectrum component corresponding to the predetermined non-harmonic structured spectral component is extracted and then increased or decreased. The extraction of the predetermined non-harmonic structured spectral component is performed with reference to a spectral component of a template stored in advance. In this process, the spectral component of the template is adapted in such a manner that the difference between the extracted spectral component and the spectral component of the template goes below or at a predetermined value. This allows the audio-signal contained predetermined non-harmonic structured spectral component to be independently increased or decreased without an influence on other spectral components.

摘要翻译： 一种用于提取包含在音频信号中的预定非谐波结构频谱分量的装置和方法。 然后，提取的预定光谱分量被增加或减小。 在该过程中，通过频率分析计算音频信号的频谱，从而提取与预定的非谐波结构频谱分量对应的频谱分量，然后增大或减小。 参考预先存储的模板的光谱分量来执行预定非谐波结构光谱分量的提取。 在该过程中，模板的频谱分量被调整成使得提取的频谱分量与模板的频谱分量之间的差异低于或处于预定值。 这允许包含预定非谐波结构频谱分量的音频信号独立地增加或减少，而不影响其他频谱分量。

公开(公告)号：US06934274B2

公开(公告)日：2005-08-23

申请号：US10184930

申请日：2002-07-01

申请人： Atsushi Inoue ,  Masahiro Ishiyama ,  Atsushi Fukumoto ,  Yoshiyuki Tsuda ,  Toshio Okamoto ,  Masataka Goto ,  Yoshinari Kumaki

发明人： Atsushi Inoue ,  Masahiro Ishiyama ,  Atsushi Fukumoto ,  Yoshiyuki Tsuda ,  Toshio Okamoto ,  Masataka Goto ,  Yoshinari Kumaki

IPC分类号： G06F13/00 ,  H04L29/06 ,  H04L29/12 ,  H04W8/06 ,  H04W60/04 ,  H04W80/04 ,  H04W88/18 ,  H04Q7/24 ,  H04L12/28 ,  H04L12/66

CPC分类号： H04L29/12216 ,  H04L29/12264 ,  H04L29/12311 ,  H04L61/2015 ,  H04L61/2046 ,  H04L61/2084 ,  H04L69/16 ,  H04L69/163 ,  H04W8/06 ,  H04W8/26 ,  H04W60/04 ,  H04W80/04 ,  H04W88/182

摘要： A mobile IP communication scheme in which the mobile computer can be operated using the mobile communication protocol such as Mobile IP even in the case where the home network is operated by the dynamic address allocation protocol such as DHCP is disclosed. The current location registration message to be transmitted by the mobile computer from the visited site to the mobile computer management device contains an information indicating that the dynamic address allocation has been received at the home network and an information capable of identifying the mobile computer, and the mobile computer management device carries out exchanges with the dynamic address management server on behalf of the mobile computer, so that the mobile computer which has received the dynamic address allocation at the home network can be operated at the visited site by using the mobile communication protocol.

摘要翻译： 公开了一种移动IP通信方案，其中移动计算机可以使用诸如移动IP的移动通信协议来操作，即使在家庭网络由诸如DHCP的动态地址分配协议操作的情况下也是如此。 要由移动计算机从访问站点发送到移动计算机管理装置的当前位置登记消息包含指示已经在家庭网络处接收到动态地址分配的信息和能够识别移动计算机的信息，以及 移动计算机管理装置代表移动计算机与动态地址管理服务器进行交换，使得已经在家庭网络中接收到动态地址分配的移动计算机可以通过使用移动通信协议在访问站点处操作。

公开(公告)号：US6144261A

公开(公告)日：2000-11-07

申请号：US296487

申请日：1999-04-22

申请人： Masataka Goto ,  Yasuhiro Sato

发明人： Masataka Goto ,  Yasuhiro Sato

IPC分类号： H03L7/113 ,  H03L7/093 ,  H03L7/14 ,  H03L7/08

CPC分类号： H03L7/093 ,  H03L7/14

摘要： PLL (Phase Locked Loop) circuits have difficulty achieving both short pull-in time and stable hold-over time simultaneously. The PLL circuit of the present invention includes a first integrator and a second integrator. To reduce a pull-in time, feedback loop including the first integrator is provided with a sufficiently great loop gain. For stable holdover, a feedback loop including the second integrator is provided with a loop gain small enough to obviate the influence of the momentary variation of an input signal frequency.

摘要翻译： PLL（锁相环）电路同时难以实现短暂的吸入时间和稳定的保持时间。 本发明的PLL电路包括第一积分器和第二积分器。 为了减少引入时间，包括第一积分器的反馈回路具有足够大的回路增益。 为了稳定保持，包括第二积分器的反馈回路具有小到足以消除输入信号频率的瞬时变化的影响的环路增益。

公开(公告)号：US08880409B2

公开(公告)日：2014-11-04

申请号：US12866159

申请日：2009-02-05

申请人： Hiromasa Fujihara ,  Masataka Goto

发明人： Hiromasa Fujihara ,  Masataka Goto

IPC分类号： G10L21/00 ,  G10L15/26 ,  G10L25/90

CPC分类号： G10L15/265 ,  G10L15/26 ,  G10L25/90 ,  G10L2015/025

摘要： A system provided herein may perform automatic temporal alignment between music audio signal and lyrics with higher accuracy than ever. A non-fricative section extracting 4 extracts non-fricative sound sections, where no fricative sounds exist, from the music audio signal. An alignment portion 17 includes a phone model 15 for singing voice capable of estimating phonemes corresponding to temporal-alignment features. The alignment portion 17 performs an alignment operation using as inputs temporal-alignment features obtained from a temporal-alignment feature extracting portion 11, information on vocal and non-vocal sections obtained from a vocal section estimating portion 9, and a phoneme network SN on conditions that no phonemes exist at least in non-vocal sections and that no fricative phonemes exist in non-fricative sound sections.

摘要翻译： 这里提供的系统可以以比以往更高的精度执行音乐音频信号和歌词之间的自动时间对准。 非音乐部分提取4从音乐音频信号中提取不含摩擦音的非摩擦声部分。 对准部分17包括用于歌唱能够估计与时间对准特征对应的音素的语音的电话模型15。 对准部分17使用从时间对准特征提取部分11获得的时间对准特征作为输入，从声部分估计部分9获得的关于声乐和非声部分的信息以及音调网络SN在条件下进行对准操作 至少在非声部分中不存在音素，并且在非摩擦声部分中不存在摩擦音素。

公开(公告)号：US08239052B2

公开(公告)日：2012-08-07

申请号：US12595542

申请日：2008-04-14

申请人： Katsutoshi Itoyama ,  Hiroshi Okuno ,  Masataka Goto

发明人： Katsutoshi Itoyama ,  Hiroshi Okuno ,  Masataka Goto

IPC分类号： G06F17/00

CPC分类号： G10H3/125 ,  G10H1/0008 ,  G10H2210/056 ,  G10H2210/066 ,  G10H2210/086 ,  G10H2210/301 ,  G10H2240/056 ,  G10H2250/031

摘要： An audio signal produced by playing a plurality of musical instruments is separated into sound sources according to respective instrument sounds. Each time a separation process is performed, the updated model parameter estimation/storage section 114 estimates parameters respectively contained in updated model parameters such that updated power spectrograms gradually change from a state close to initial power spectrograms to a state close to a plurality of power spectrograms most recently stored in a power spectrogram separation/storage section. Respective sections including the power spectrogram separation/storage section 112 and an updated distribution function computation/storage section 118 repeatedly perform process operations until the updated power spectrograms change from the state close to the initial power spectrograms to the state close to the plurality of power spectrograms most recently stored in the power spectrogram separation/storage section 112. The final updated power spectrograms are close to the power spectrograms of single tones of one musical instrument contained in the input audio signal formed to contain harmonic and inharmonic models.

摘要翻译： 通过播放多个乐器产生的音频信号根据相应的乐器声音被分离成声源。 每当执行分离处理时，更新的模型参数估计/存储部114估计更新的模型参数中包含的参数，使得更新的功率谱图从接近初始功率谱图的状态逐渐变化到接近多个功率谱图的状态 最近存储在功率谱图分离/存储部分中。 包括功率谱图分离/存储部分112和更新的分布函数计算/存储部分118的各个部分重复执行处理操作，直到更新的功率谱图从接近初始功率谱图的状态改变到接近多个功率谱图的状态 最近存储在功率谱图分离/存储部分112中。最终更新的功率谱图接近包含在形成为包含谐波和非谐波模型的输入音频信号中的一个乐器的单个音调的功率谱图。