公开(公告)号：US20230247377A1

公开(公告)日：2023-08-03

申请号：US18009743

申请日：2020-06-30

Applicant: TOA Corporation

Inventor： Kazuma ASADA ,  Ryosuke OZAKI

IPC: H04R27/00 ,  H04R1/04

CPC classification number: H04R27/00 ,  H04R1/04

Abstract: Provided is a public address device that facilitates recognizing a sound while performing power control so that input power does not exceed upper-limit supply power of a power source device. Included are a voltage transforming unit 204 that performs voltage transformation of a direct-current power source input from a power source device 10; a power amplifier 202 that amplifies a sound signal using the direct-current power source after the voltage transformation to generate a driving signal that drives an electroacoustic transducer; a power detection unit 205 that detects input power from the power source device 10; a threshold holding unit 207 that holds a power determination threshold Pth corresponding to upper-limit supply power of the power source device 10; a voltage control unit 206 that controls an output voltage of the voltage transforming unit 204 on the basis of the input power Pi and the power determination threshold Pth; and a charge accumulation unit 208 that is connected between the voltage transforming unit 204 and the power amplifier 202, and supplies a power source to the power amplifier 202 when the output voltage of the voltage transforming unit 204 drops.

公开(公告)号：US20230095124A1

公开(公告)日：2023-03-30

申请号：US17911218

申请日：2020-03-19

Applicant: TOA Corporation

Inventor： Yuma KAWAI

IPC: G10L17/04 ,  G10L17/26 ,  G06Q30/0283

Abstract: An AI control device, which identifies individual users from a plurality of users to receive input data, and is connectable to a server device that generates a trained model based on input data for each user, includes a control unit, and a communication unit connected to the server device. The control unit acquires input data, associates acquired input data and identifying information used to identify the user of the AI control device, and sends the data and information to the server device via the communication unit. The control unit uses the sent acquired input data to execute a trained model that is generated separately from trained models of other users by the server device, and that learns characteristics of acquired input data and detects input data having the same characteristics from unknown input data.

公开(公告)号：US10355794B2

公开(公告)日：2019-07-16

申请号：US15574402

申请日：2015-05-22

Applicant: TOA CORPORATION

Inventor： Katsuhiro Mori

IPC: H04B17/391 ,  H04L5/00 ,  H04B1/04 ,  H04W16/14

Abstract: This channel simulation device is provided with a memory for storing a distance calculation parameter and reception strength calculation parameter, and a processor for estimating desired-wave reception strength and interfering-wave reception strength on the basis of the distance calculation parameter and the reception strength calculation parameter. The desired-wave reception strength refers, for each set of two areas selected from a plurality of areas, to reception strength when a transmission signal transmitted from the wireless microphone of one area is received by a receiver in the one area. The interfering-wave reception strength refers to reception strength when a transmission signal transmitted from the wireless microphone of the other area is received by the receiver in the one area.

公开(公告)号：US09826307B2

公开(公告)日：2017-11-21

申请号：US14897147

申请日：2013-06-11

Applicant: TOA Corporation

Inventor： Hiroshi Kubota ,  Tomohiro Jonan

IPC: H04R3/00 ,  H04R1/40

CPC classification number: H04R3/005 ,  H04R1/406 ,  H04R2201/403 ,  H04R2201/405 ,  H04R2203/12 ,  H04R2430/21 ,  H04R2430/23

Abstract: A microphone array includes an n microphone units (where n is an integer equal to or larger than three). A first one of the microphone units includes three microphones ((14-1 through 14-3)) arranged in line at equal intervals. An m-th microphone unit (where m is a positive integer expressed by 1

公开(公告)号：US20160150316A1

公开(公告)日：2016-05-26

申请号：US14897147

申请日：2013-06-11

Applicant: TOA CORPORATION

Inventor： Hiroshi KUBOTA ,  Tomohiro JONAN

IPC: H04R3/00

CPC classification number: H04R3/005 ,  H04R1/406 ,  H04R2201/403 ,  H04R2201/405 ,  H04R2203/12 ,  H04R2430/21 ,  H04R2430/23

Abstract: A microphone array includes an n microphone units (where n is an integer equal to or larger than three). A first one of the microphone units includes three microphones ((14-1 through 14-3)) arranged in line at equal intervals. An m-th microphone unit (where m is a positive integer expressed by 1

Abstract translation: 麦克风阵列包括n个麦克风单元（其中n是等于或大于3的整数）。 麦克风单元中的第一个包括以等间隔排成一行的三个麦克风（（14-1至14-3））。 第m个麦克风单元（其中m是由1

公开(公告)号：US20150139430A1

公开(公告)日：2015-05-21

申请号：US14408961

申请日：2012-06-19

Applicant: TOA Corporation

Inventor： Satoshi Miyata ,  Hiroshi Kubota

IPC: H04R29/00

CPC classification number: H04R29/00 ,  H04R3/12 ,  H04R29/002

Abstract: To provide a speaker apparatus that can detect miswiring to a speaker unit or trouble of a speaker unit itself. The speaker apparatus is configured to include: two or more speaker units 11 that are arranged in a speaker housing 10; a sensor microphone 12 that is arranged in the speaker housing 10 and outputs a sound collection signal 6; a target unit selection part 20 that selects any one of the speaker units 11 as a target unit; a sound signal supply part 21 that supplies an external sound signal 4 to the target unit; and an error detection part 25 that provides an error output on the basis of the external sound signal 4 and the sound collection signal 6.

Abstract translation: 提供一种可以检测扬声器单元的接线错误或扬声器单元本身的故障的扬声器装置。 扬声器装置被配置为包括：布置在扬声器壳体10中的两个或更多个扬声器单元11; 传感器麦克风12，布置在扬声器壳体10中并输出声音采集信号6; 选择扬声器单元11中的任一个作为目标单元的目标单元选择部20; 向目标单元提供外部声音信号4的声音信号提供部21; 以及基于外部声音信号4和声音采集信号6提供误差输出的误差检测部分25。