公开(公告)号：JP2009290529A

公开(公告)日：2009-12-10

申请号：JP2008140700

申请日：2008-05-29

Applicant: Toa Corp ,  ティーオーエー株式会社

Inventor： MATSUSHITA SHOGO ,  MAEDA KAZUAKI

IPC: H04L29/08 ,  H04L7/00 ,  H04L13/08

Abstract: PROBLEM TO BE SOLVED: To provide a streaming data compensation method in asynchronous packet communication, the method dealing with both a packet lack and excessive packets, so that it is not necessary to perform much compensation on one packet. SOLUTION: A receiver includes a receiver 1 for receiving packetized data transmitted from a transmitter, a packet compensator constituted of a DSP 2, and a digital-to-analog converter DAC 3 for converting a digital signal outputted from the packet compensator into audio. More specifically, the packet compensator includes a write pointer WP for writing in order packetized data received from the receiver 1, three kinds of buffers r_data_buf 21, x_data_buf 22 and p_data_buf 23, and a read pointer RP for reading data in the buffers and transmitting the data to the DAC 3. COPYRIGHT: (C)2010,JPO&INPIT

Abstract translation: 要解决的问题：为了在异步分组通信中提供流数据补偿方法，该方法处理分组缺少和过多的分组，使得不需要对一个分组执行很多的补偿。 解决方案：接收机包括用于接收从发射机发送的分组数据的接收机1，由DSP 2构成的分组补偿器和用于将从分组补偿器输出的数字信号转换成数字 - 模拟转换器DAC 3的数模转换器DAC 3 音频。 更具体地，分组补偿器包括用于按顺序从接收机1接收的分组数据写入的写指针WP，三种缓冲器r_data_buf21，x_data_buf22和p_data_buf23以及用于读缓冲器中的数据的读指针RP， 数据传递给DAC 3.版权所有（C）2010，JPO＆INPIT

公开(公告)号：JP2006140952A

公开(公告)日：2006-06-01

申请号：JP2004330983

申请日：2004-11-15

Applicant: Nobuyuki Matsui ,  Sutetsupu One:Kk ,  Toa Corp ,  ティーオーエー株式会社 ,  伸之 松井 ,  株式会社ステップワン

Inventor： MATSUI NOBUYUKI ,  ISOGAWA TEIJIRO ,  SODO HIROMI ,  MAEDA KAZUAKI ,  OGAWA YUZO

IPC: H04N1/46 ,  G06N3/00 ,  G06T1/00 ,  H04N1/60

Abstract: PROBLEM TO BE SOLVED: To obtain a processing result as expected corresponding to the luminance of color image data, in an image processor which processes the color image data by a neutral network.
SOLUTION: The color image data Do are inputted to the network part 16 of the neutral network 14 of a BP-method learning type after normalized to values of 0 to 1 by a normalization part 12. The network part 16 applies luminance conversion processing to the color image data Do on the basis of parameters Wnm, Wpn, θn and θp set from a parameter setting part 18. At this time, the color image data Do are processed as a quaternion. Namely, three components, an R component, a G component and a B component constituting the color image data Do are collectively processed as three-dimensional vector data. Furthermore, the parameters Wnm, Wpn, θn and θp set in the network part 16 are selected according to the luminance of the color image data Do.
COPYRIGHT: (C)2006,JPO&NCIPI

Abstract translation: 要解决的问题：在通过中性网络处理彩色图像数据的图像处理器中获得与彩色图像数据的亮度相对应的预期的处理结果。 解决方案：通过归一化部分12将彩色图像数据Do输入到BP方法学习型中性网络14的网络部分16，其归一化为0至1的值。网络部分16应用亮度转换 基于从参数设定部18设定的参数Wnm，Wpn，θn，θp对彩色图像数据Do进行处理。此时，彩色图像数据Do被作为四元数进行处理。 即，将构成彩色图像数据Do的R成分，G成分和B成分的三个成分统称为三维矢量数据。 此外，根据彩色图像数据Do的亮度来选择网络部分16中设置的参数Wnm，Wpn，θn和θp。 版权所有（C）2006，JPO＆NCIPI

公开(公告)号：JP2001296898A

公开(公告)日：2001-10-26

申请号：JP2000113175

申请日：2000-04-14

Applicant: TOA CORP

Inventor： MAEDA KAZUAKI

IPC: G10L19/00 ,  H03M7/30 ,  H04B14/06

Abstract: PROBLEM TO BE SOLVED: To reduce deterioration of audibility caused by a bit error in a transmission system. SOLUTION: The voice transmission system quantizes an inputted voice signal to a signal which has one among first code arrangements (5) and the quantized signal is converted to one among second code arrangements placed based on the Hamming distance with respect to the prescribed code arrangement (21) to be sent out to the transmission system 6. The inverse conversion (23) of the signal which has the received second code arrangement from the transmission system 6 is performed in order to convert to one of the first code arrangement and the inverse quantization (8) of the signal converted inversely is performed to the signal which has one of the first code arrangement.

公开(公告)号：JP2001217736A

公开(公告)日：2001-08-10

申请号：JP2000021995

申请日：2000-01-31

Applicant: TOA CORP

Inventor： MAEDA KAZUAKI

IPC: H03M1/12 ,  H03M1/66 ,  H04B1/04 ,  H04B1/16 ,  H04L29/08

Abstract: PROBLEM TO BE SOLVED: To perform switching in a receiver synchronously with switching in a transmitter corresponding to the level of an analog input signal. SOLUTION: Concerning the switching control method for a digital communication system composed of the transmitter for generating a transmitting digital signal by performing the digital conversion of an analog signal inputted to a microphone and the receiver for reproducing the original analog signal from the received digital signal, this method is provided with a step for sending a control signal containing information corresponding to the compared result of the level of the transmitting digital signal and a prescribed level out of the transmitter together with the transmitting digital signal and a step for extracting the control signal in the receiver and selecting a signal processing route on the basis of this control signal.

公开(公告)号：JP2000124771A

公开(公告)日：2000-04-28

申请号：JP29772498

申请日：1998-10-20

Applicant: TOA CORP

Inventor： MAEDA KAZUAKI

IPC: H03H15/00 ,  H03H17/06

Abstract: PROBLEM TO BE SOLVED: To reduce the number of use of multipliers. SOLUTION: This digital transversal filter of a symmetry type composed of a first stage-a 2m-th stage where (m) is an integer >=2} for applying input signals X(t) to the first stage and turning signals for which signals N1-N8 outputted from the respective first stage-2m-th stage are added to output signals Y(t) is provided with the multipliers M1-M4 of the first stage-an m-th stage respectively having first-m-th gains G1-G4 as the first stage-the m-th stage and delay elements D1-D3 respectively connected between the input of the adjacent multipliers. In the respective (m+1)-th stage-2m-th stage, delay circuits D8-D23 are provided for delaying the output signals of the multiplier of the stage at a symmetrical position relating to the center of the digital transversal filter for an amount equal to delay time to be received before the output signals reach the stage.

公开(公告)号：JP2013102477A

公开(公告)日：2013-05-23

申请号：JP2012281803

申请日：2012-12-25

Applicant: Toa Corp ,  Toa株式会社

Inventor： MATSUMOTO YASUSHI ,  MAEDA KAZUAKI

IPC: H03H17/06 ,  H03G5/02 ,  H03H17/02 ,  H03H17/08

CPC classification number: H03G5/025 ,  H04R3/04 ,  H04R29/001 ,  H04R29/008

Abstract: PROBLEM TO BE SOLVED: To provide a filter, which adjusts at least a phase frequency characteristic of frequency characteristics (amplitude frequency characteristic and phase frequency characteristic) of an audio signal, capable of achieving adjustment of tone quality suited to various applications.SOLUTION: The filter is configured so that an own phase frequency characteristic and an own amplitude frequency characteristic can be independently changed, a desired phase frequency characteristic curve and a desired amplitude frequency characteristic curve are displayed on an identical screen of a display unit, the own phase frequency characteristic is changed independently of the own amplitude frequency characteristic on the basis of the phase frequency characteristic expressed with the desired phase frequency characteristic curve, and so that the amplitude frequency characteristic of an audio signal is changed independently of the phase frequency characteristic on the basis of the amplitude frequency characteristic expressed with the desired amplitude frequency characteristic curve.

Abstract translation: 要解决的问题：提供一种滤波器，其至少调节音频信号的频率特性（幅度频率特性和相位频率特性）的相位频率特性，能够实现适于各种应用的音调质量的调整。 解决方案：滤波器被配置为使得可以独立地改变自身的相位频率特性和自身的振幅频率特性，期望的相位频率特性曲线和期望的频率特性曲线被显示在显示单元的相同的屏幕上 ，根据以期望的相位频率特性曲线表示的相位频率特性，自身的相位频率特性独立于自身的振幅频率特性而变化，使得音频信号的幅度频率特性独立于相位频率而变化 基于以期望的幅度频率特性曲线表示的幅度频率特性的特性。 版权所有（C）2013，JPO＆INPIT

公开(公告)号：JP2013102476A

公开(公告)日：2013-05-23

申请号：JP2012281802

申请日：2012-12-25

Applicant: Toa Corp ,  Toa株式会社

Inventor： MATSUMOTO YASUSHI ,  MAEDA KAZUAKI

IPC: H03G5/02 ,  H04R3/00

CPC classification number: H03G5/025 ,  H04R3/04 ,  H04R29/001 ,  H04R29/008

Abstract: PROBLEM TO BE SOLVED: To provide an audio adjustment method capable of facilitating adjustment of tone quality according to listeners' preferences or various applications.SOLUTION: The audio adjustment method, including inputting of an audio signal that has been subjected to predetermined adjustment into a sound output device, includes changing of a phase frequency characteristic of the audio signal independently of an amplitude frequency characteristic when adjusting.

Abstract translation: 要解决的问题：提供一种音频调节方法，其能够根据听众的喜好或各种应用促进音调质量的调节。 解决方案：包括将经过预定调整的音频信号输入到声音输出装置中的音频调节方法包括在调节时独立于振幅频率特性改变音频信号的相位频率特性。 版权所有（C）2013，JPO＆INPIT

公开(公告)号：JP2013081243A

公开(公告)日：2013-05-02

申请号：JP2012281804

申请日：2012-12-25

Applicant: Toa Corp ,  Toa株式会社

Inventor： MATSUMOTO YASUSHI ,  MAEDA KAZUAKI

IPC: H04R3/04

CPC classification number: H03G5/025 ,  H03H17/0294 ,  H03H2017/0297

Abstract: PROBLEM TO BE SOLVED: To provide an acoustic control device capable of facilitating adjustment of acoustic quality according to listeners' preferences and/or various applications.SOLUTION: An acoustic control device includes: an FIR filter 11 that performs filtering corresponding to a preset filter coefficient for an input audio signal and outputs the signal; an operation input section 13 that specifies an amplitude characteristic and a phase characteristic to be implemented after changes for the purpose of changing the amplitude characteristic and phase characteristic of the FIR filter 11; and an arithmetic control section 12 that sets, to the FIR filter 11, a filter coefficient corresponding to an amplitude characteristic and a phase characteristic designated by the operation input section 13.

Abstract translation: 要解决的问题：提供一种能够根据听众的喜好和/或各种应用促进声学质量的调节的声学控制装置。 声控制装置包括：FIR滤波器11，对输入的音频信号进行与预设的滤波器系数对应的滤波，并输出该信号; 指定为了改变FIR滤波器11的振幅特性和相位特性而改变之后要实现的幅度特性和相位特性的操作输入部分13; 以及算术控制部12，其向FIR滤波器11设定与由操作输入部13指定的振幅特性和相位特性对应的滤波器系数。（C）2013，JPO＆INPIT

公开(公告)号：JP2010041280A

公开(公告)日：2010-02-18

申请号：JP2008200531

申请日：2008-08-04

Applicant: Toa Corp ,  ティーオーエー株式会社

Inventor： MATSUMOTO YASUSHI ,  MAEDA KAZUAKI

IPC: H04R3/02 ,  H04R3/04

Abstract: PROBLEM TO BE SOLVED: To provide a signal processing device which suppresses an occurrence of an abnormal noise by return noise.
SOLUTION: A signal processing apparatus includes a band division circuit Fd generating a plurality of subband signals by performing a first orthogonal transform to a digital voice input signal, a plurality of AGC amplifying circuits G1-Gn provided corresponding to each of signal groups S1-Sn composed of at least three subband signals whose frequency bands are adjoining with each other, obtaining a signal group level based on a level of the subband signal except the subband signals whose frequency bands are adjoining to other signal groups in each corresponding signal group, determining a gain based on the signal group level, and performing amplifying processing to all of the subband signals within the corresponding signal group based on the gain, and a band synthetic circuit Fc performing an inverse transform of the first orthogonal transform to a signal to which the amplifying processing is performed by each of the AGC amplifying circuits G1-Gn and outputting the digital voice output signal.
COPYRIGHT: (C)2010,JPO&INPIT

Abstract translation: 要解决的问题：提供一种通过返回噪声抑制异常噪声的发生的信号处理装置。 解决方案：信号处理装置包括通过对数字语音输入信号执行第一正交变换而生成多个子带信号的分频电路Fd，与每个信号组对应设置的多个AGC放大电路G1-Gn S1-Sn由频带彼此相邻的至少三个子带信号组成，除了频带与每个相应信号组中的其它信号组相邻的子带信号之外，基于子带信号的电平获得信号组电平 基于信号组电平确定增益，并且基于增益对相应信号组内的所有子带信号执行放大处理;以及频带合成电路Fc，执行第一正交变换的逆变换到信号 由AGC放大电路G1-Gn中的每一个执行放大处理并输出数字语音输出 ut信号。 版权所有（C）2010，JPO＆INPIT

公开(公告)号：JP2005236737A

公开(公告)日：2005-09-02

申请号：JP2004044219

申请日：2004-02-20

Applicant: Toa Corp ,  ティーオーエー株式会社

Inventor： KURISU KIYOHIRO ,  MAEDA KAZUAKI ,  YAMAGUCHI SHIZUMA ,  SAEKI TETSUO

IPC: G08B23/00 ,  H04R1/26 ,  H04R3/04 ,  H04R27/00 ,  H04S7/00

CPC classification number: G08B7/062

Abstract: PROBLEM TO BE SOLVED: To provide a simple and inexpensive broadcast system which supports evacuation guidance using sound. SOLUTION: N numbers (N: plural number) of speakers 12 are spaced along a guiding direction 100. The speakers 12 are connected to a wideband sound source system 18 through band pass filters 14 corresponding to them and a common pre-amplifier circuit 16. The wideband sound source system 18 outputs white noise signal as guiding signal. The band pass filters 14 have frequency characteristics different from each other, and specifically, the frequency characteristics is so set that a speaker 12 closer to an evacuation gate emits a guiding sound higher in frequency. Evacuees can reach the evacuation gate by advancing in such direction as the guiding sound becomes higher in frequency. COPYRIGHT: (C)2005,JPO&NCIPI

Abstract translation: 要解决的问题：提供一种简单而廉价的广播系统，其支持使用声音的撤离指导。 扬声器12通过与它们对应的带通滤波器14和共同的前置放大器连接到宽带声源系统18上 宽带声源系统18输出白噪声信号作为引导信号。 带通滤波器14具有彼此不同的频率特性，具体地说，频率特性被设定为使靠近疏散门的扬声器12发射频率更高的引导声。 通过按照引导声音频率变高的方向前进，逃逸者可以到达撤离门。 版权所有（C）2005，JPO＆NCIPI