公开(公告)号：US20230254640A1

公开(公告)日：2023-08-10

申请号：US18010842

申请日：2020-07-09

Applicant: TOA Corporation

Inventor： Toshimitsu SUETSUGU

IPC: H04R3/02 ,  H04R3/04 ,  H04R27/00

CPC classification number: H04R3/02 ,  H04R3/04 ,  H04R27/00 ,  H04R2227/007

Abstract: An object is to provide a public address device that effectively prevents occurrence of howling without a drop of the gain. A public address device 100 includes: a loudspeaker 1 that generates a reproduced sound on the basis of a loudspeaker driving signal u(n); a microphone 2 that collects the reproduced sound and an input sound v(n) to generate a microphone-collected-sound signal y(n); a first filter 301 that generates, on the basis of the loudspeaker driving signal u(n), a pseudo echo signal e(n); an echo-cancelling unit 302 that obtains a difference between the microphone-collected-sound signal y(n) and the pseudo echo signal e(n) to generate an echo-cancelled signal d(n); a second filter 311 that whitens the input sound v(n) included in the loudspeaker driving signal u(n); a third filter 312 that whitens the input sound v(n) included in the microphone-collected-sound signal y(n); a first adaptive filter 313 that uses, as a reference signal, an output signal output from the second filter 311, and uses, as a desired signal, an output signal output from the third filter 311, and estimates a propagation characteristic Wo from the loudspeaker 1 to the microphone 2; a unit that repeatedly updates a filter coefficient W of the first filter 301 on the basis of a filter coefficient W identified by the first adaptive filter 313; and a frequency shifting unit 32 that performs a frequency shift on the echo-cancelled signal d(n) to generate the loudspeaker driving signal u(n).

公开(公告)号：US20160148624A1

公开(公告)日：2016-05-26

申请号：US14897407

申请日：2013-06-11

Applicant: TOA CORPORATION

Inventor： Tomohiro JONAN ,  Shinya FUKUDA ,  Yuichi KAGEYAMA

IPC: G10L21/10 ,  H04S7/00 ,  H04R3/00

CPC classification number: G10L21/10 ,  G10L2021/02166 ,  H04R1/40 ,  H04R3/005 ,  H04R29/005 ,  H04R2430/20 ,  H04S7/40

Abstract: Problem to be SolvedTo effectively operate a microphone array provided with a sound source position estimating function.SolutionA microphone control system of the present invention is realized by the use of a tablet-type computer, for example. On the display of the control system, a two-dimensional simulation diagram 302, for example, simulating the space in which the microphone array is disposed. An array mark 304 simulating the exterior shape of the microphone array is displayed on the simulation diagram 302. Further, a sound source mark 316 indicating the position of the sound source estimated by the microphone array is displayed on the simulation diagram 302. Thus, an operator can intuitively find the position of the sound source in the space in which the microphone array is disposed, by referring to the simulation diagram 302, the array mark 304 and the sound source mark 316 displayed on the simulation diagram. Thus, the usage of the microphone array is improved.

Abstract translation: 要解决的问题为了有效地操作具有声源位置估计功能的麦克风阵列。 解决方案本发明的麦克风控制系统例如通过使用平板式计算机来实现。 在控制系统的显示器上，例如，模拟麦克风阵列设置的空间的二维模拟图302。 在模拟图302上显示模拟麦克风阵列的外形的阵列标记304.此外，在模拟图302上显示指示由麦克风阵列估计的声源的位置的声源标记316。 操作者可以通过参考模拟图表302上显示的模拟图302，阵列标记304和声源标记316直观地找到放置麦克风阵列的空间中声源的位置。 因此，提高了麦克风阵列的使用。

公开(公告)号：USD714266S1

公开(公告)日：2014-09-30

申请号：US29457236

申请日：2013-06-07

Applicant: TOA Corporation

Designer： Shuichi Okamura ,  Michihiko Tokuda

公开(公告)号：USD702212S1

公开(公告)日：2014-04-08

申请号：US29432112

申请日：2012-09-13

Applicant: Narutoshi Okazaki ,  Shuichi Okamura

Designer： Narutoshi Okazaki ,  Shuichi Okamura

公开(公告)号：US08086277B2

公开(公告)日：2011-12-27

申请号：US10564213

申请日：2004-07-12

Applicant: Richard Ganley ,  Tomohisa Tanaka

Inventor： Richard Ganley ,  Tomohisa Tanaka

IPC: H04M1/00

CPC classification number: H04B17/24 ,  H04B1/20 ,  H04R29/004 ,  H04R29/008 ,  H04R2410/00 ,  H04R2420/07 ,  H04R2499/11

Abstract: A wireless microphone communication system 1 comprises a transmitter 91b of a wireless microphone and a receiver 11 for the wireless microphone. The transmitter 91b of the wireless microphone includes an infrared interface 91c, a control portion 91d, and a function control portion 91e that controls a function of the wireless microphone. The control portion 91d controls the function control portion 91e according to information transmitted through the infrared interface 91c. The function of the transmitter 91b of the wireless microphone is controlled under this control. The receiver 11 of the wireless microphone has the infrared interface 11c. The receiver 11 of the wireless microphone sends, through the infrared interface 11c, information in the form of the infrared signal to control the function of the transmitter 91c of the wireless microphone.

Abstract translation: 无线麦克风通信系统1包括无线麦克风的发射机91b和用于无线麦克风的接收机11。 无线麦克风的发送器91b包括红外接口91c，控制部分91d和控制无线麦克风的功能的功能控制部分91e。 控制部91d根据通过红外线接口91c发送的信息来控制功能控制部91e。 在该控制下控制无线麦克风的发射机91b的功能。 无线麦克风的接收机11具有红外接口11c。 无线麦克风的接收机11通过红外接口11c以红外信号的形式发送信息，以控制无线麦克风的发射机91c的功能。

公开(公告)号：US20100296687A1

公开(公告)日：2010-11-25

申请号：US12675750

申请日：2008-03-05

Applicant: Takeshi Fujita ,  Hiroshi Kubota

Inventor： Takeshi Fujita ,  Hiroshi Kubota

IPC: H04R1/00 ,  H04R7/02 ,  G10K13/00

CPC classification number: H04R7/14

Abstract: The present invention provides a dome diaphragm having high strength wholly and uniformly while maintaining a small thickness of a dome portion. A diaphragm 1 according to the present invention is a dome diaphragm including a dome portion 2. The dome portion 2 is divided into a plurality of small portions 4, and a ridge portion 7 is formed at a boundary of the small portions 4. In accordance with this configuration, the ridge portions 7 exist over the entire dome portion 2, and the ridge portions 7 can serve as frames for reinforcing the dome portion 2.

Abstract translation: 本发明提供了一种在保持较小厚度的圆顶部分的情况下全部且均匀地具有高强度的圆顶隔膜。 根据本发明的隔膜1是包括圆顶部分2的圆顶隔膜。圆顶部分2被分成多个小部分4，并且脊部分7形成在小部分4的边界处。根据 通过这种构造，脊部7存在于整个圆顶部2上，并且脊部7可以用作用于加强穹顶部2的框架。

公开(公告)号：US07735599B2

公开(公告)日：2010-06-15

申请号：US10550318

申请日：2004-03-25

Applicant: Hiroshi Kubota

Inventor： Hiroshi Kubota

IPC: G10K11/02 ,  G10K11/08 ,  G10K11/18 ,  H04R1/30 ,  G10K11/00 ,  H04R1/20

CPC classification number: G10K11/025 ,  G10K11/08 ,  G10K11/28 ,  H04R1/30

Abstract: A sound wave guide structure for a speaker system comprises a sound passage space connecting an inlet opening 11 to an outlet opening 12. The sound passage space branches in plural stages in a range from the inlet opening 11 to the outlet opening 12, thereby forming a plurality of sound wave guide paths extending from the inlet opening 11 to the outlet opening 12.

Abstract translation: 用于扬声器系统的声波引导结构包括将入口开口11连接到出口12的声音通道空间。声音通道空间在从入口开口11到出口12的范围内分支成多级，从而形成 多个声波引导路径从入口开口11延伸到出口12。

公开(公告)号：US07596238B2

公开(公告)日：2009-09-29

申请号：US10565357

申请日：2004-06-24

Applicant: Daisuke Higashihara

Inventor： Daisuke Higashihara

IPC: H04R25/00

CPC classification number: H04R29/007 ,  H04R3/02 ,  H04R27/00 ,  H04R2227/007

Abstract: A howling margin measuring device 20 comprises processing means 28 composed of gain controlling means 21 and a compressor 22 which are connected in series and controlling means 23. The gain controlling means 21 outputs an input sound signal after giving a gain thereto. If the level of a sound signal input to the compressor 22 is equal to or higher than a threshold level, the compressor 22 outputs the sound signal after compressing it with a specified ratio. The controlling means 23 is capable of controlling the gain of the gain controlling means 21 and reading the compression level of the compressor 22. The controlling means 23 reads the compression level of the compressor 22 while gradually increasing the gain of the gain controlling means 21, determines whether or not howling has been generated based on whether the read compression level has a value equal to or higher than a specified value, and calculates a howling margin based on the gain of the gain controlling means 21 when it is determined that howling has been generated.

Abstract translation: 啸叫余量测量装置20包括由串联连接的增益控制装置21和压缩机22组成的处理装置28和控制装置23.增益控制装置21在给予增益之后输出输入声音信号。 如果输入到压缩机22的声音信号的电平等于或高于阈值电平，则压缩机22以规定的比例对其进行压缩后输出声音信号。 控制装置23能够控制增益控制装置21的增益并读取压缩机22的压缩电平。控制装置23在逐渐增加增益控制装置21的增益的同时读取压缩机22的压缩电平， 基于读取压缩级别是否具有等于或高于指定值的值来确定是否已经产生啸叫，并且当确定已经发出啸声时，基于增益控制装置21的增益来计算啸叫余量 生成。

公开(公告)号：US20090236224A1

公开(公告)日：2009-09-24

申请号：US11721542

申请日：2005-12-13

Applicant: Masaharu Yamasato ,  Takao Takami ,  Taisuke Nakano ,  Shoji Moroguchi

Inventor： Masaharu Yamasato ,  Takao Takami ,  Taisuke Nakano ,  Shoji Moroguchi

IPC: G01N27/40 ,  C03B23/20 ,  C03B23/207

CPC classification number: G01N27/36

Abstract: It is an object of the present invention to provide an electrochemical sensor which can prevent occurrence of cracks at the welding portion between a support tube made of lead-free glass and a sensitive glass membrane or ceramics, and a method for manufacturing the same. The electrochemical sensor 100 has a configuration such that the sensitive glass membrane 2A is welded to the support tube 1 made of lead-free glass with a lead glass layer 3A between the sensitive glass membrane 2A and the support tube 1. According to the present invention, there is also provided the electrochemical sensor in which the ceramics 2B for a junction is welded to the support tube 1 made of lead-free glass with a lead glass layer 3B between the ceramics 2B and the support tube 1.

Abstract translation: 本发明的目的是提供一种电化学传感器及其制造方法，其能够防止在由无铅玻璃制成的支撑管和敏感玻璃膜或陶瓷之间的焊接部处发生裂纹。 电化学传感器100具有将敏感玻璃膜2A焊接到由无铅玻璃制成的支撑管1，在敏感玻璃膜2A和支撑管1之间具有铅玻璃层3A的结构。根据本发明 还提供了一种电化学传感器，其中用于结的陶瓷2B被焊接到由无铅玻璃制成的支撑管1上，在陶瓷2B和支撑管1之间具有铅玻璃层3B。

公开(公告)号：USD583806S1

公开(公告)日：2008-12-30

申请号：US29305717

申请日：2008-03-26

Applicant: Narutoshi Okazaki ,  Shuichi Okamura

Designer： Narutoshi Okazaki ,  Shuichi Okamura