Yokohama, Japan
Yokohama, Japan

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Patent
Toa Corporation | Date: 2013-06-11

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


Patent
Toa Corporation and Hiroshima University | Date: 2015-07-29

Provided are a quantification method and a quantification device capable of performing measurement at high sensitivity and high accuracy on a sample that contains sodium ions such as a biochemical sample, a pharmaceutical product, and food. The quantification method includes a calibration curve preparing step to measure a standard solution, which has been prepared by adding sodium ions so that a sodium ion content of the standard solution is equaled to a sodium ion content of a sample to be measured with a method employing a reaction that activates a limulus reagent and/or a biochemical luminescent reaction caused by ATP, luciferin, and luciferase, and to prepare a calibration curve that represents a relation between a measurement value and an amount of a component to be measured; a sample measuring step to measure the sample to be measured with a method being the same as that used in the calibration curve preparing step; and a quantifying step to find, by using the calibration curve, an amount of the component to be measured in the sample to be measured from a measurement value in the sample measuring step.


Patent
Toa Corporation | Date: 2015-04-22

[Object] To provide a speaker apparatus that can detect miswiring to a speaker unit or trouble of a speaker unit itself. [Means for Settlement] 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.


Patent
Toa Corporation | Date: 2013-03-06

To provide a speaker device that can form a substantially uniform sound field over a range from a long distance to a short distance without significantly increasing a calculation load. A plurality of FIR filters 21 to 2n perform delay control of respective speakers so as to increase a delay time difference between adjacent speakers 51 to 5n in a line array speaker 5 toward one end of the line array speaker 5, and thereby over a wide range from a long distance to a short distance, a sound filed 12 is formed. Also, by adding a common shift delay time Dc to filter coefficients for the FIR filters 21 to 2n, the delay time difference between adjacent speakers 51 to 5n is made less than a sampling period of a sound signal to form a wide and uniform sound field 12.


The present invention provides a trough used for feeding power to a traveling body in a noncontact manner, a paved structure, and a method of constructing the paved structure. The trough 1a used for a paved structure 5 feeding power to a power receiver provided in a traveling body 2 through an electromagnetic wave, includes: a trough body 10a having a trough depression 100 extending in the direction in which the traveling body 2 runs; a magnetic member 11 laid in the trough depression 100; a power feeding body 12 laid on the magnetic member 11 to feed power to the power receiver through an electromagnetic wave; and a power feeding body protector 13 laid in the trough depression 100 to cover the power feeding body 12.


Patent
Toa Corporation | Date: 2013-04-24

An audio signal from an audio signal source 2 is amplified in an amplifier 4, and the amplified audio signal is supplied through a loudspeaker line 6 to a plurality of loudspeakers 8 connected in parallel with each other. A test signal from a DSP 10 containing one or both of a frequency near the lowest frequency of the human audio frequency band and a frequency near the highest frequency, is combined with the audio signal in a combiner 13 and supplied to the loudspeaker line 6. Output signals of a current detecting circuit 14 and a voltage detecting circuit 16 disposed in the output of the amplifier 4 are supplied to a DSP 10 to analyze frequency components of the test signal, and a composite impedance of the loudspeakers 8 and the loudspeaker line 6 is computed based on the frequency component analysis. The DSP 10 compares the composite impedance with a threshold value to detect line breakage or decrease in impedance of the loudspeaker line.


Patent
Toa Corporation | Date: 2015-02-04

Provided is an oil film detection device capable of detecting an oil film reliably and accurately even when separated by a distance from a water surface (detection target surface). Provided is an oil film detection device including, in a detector W, an accommodating portion 5 which accommodates at least a light source 1, a concave mirror 2, and a light-receiving portion 4 , and a window 6 which closes the accommodating portion 5 in a watertight manner, for detecting an oil film existing on a detection target surface owing to that light is radiated from the light source 1 toward a detection target surface, reflection light from the detection target surface is collected by the concave mirror 2 and received by the light-receiving portion 4. Here, the light source 1 is arranged above the concave mirror and emits light approximately in the vertical direction. The concave mirror 2 is arranged so that an optical axis of the concave mirror 2 is perpendicular to the horizontal direction and has a through-hole 3, as a position deviated from the optical axis of the concave mirror 2, through which emitted light from the light source 1 passes. The light-receiving portion 4 is arranged at a focal position on the optical axis of the concave mirror 2.


Patent
Toa Corporation | Date: 2016-03-30

The present invention is to provide a paved structure capable of feeding power to a traveling body in a noncontact manner. The paved structure 1 feeding power to a power receiver 3 provided in a traveling body 2 through an electromagnetic wave, includes: a depression 10 extending in the direction in which the traveling body 2 runs; a magnetic member 11 laid in the depression 10; a power feeding body 12 laid on the upper surface of the magnetic member 11 to feed power to the power receiver 3 through an electromagnetic wave; and a power feeding body protector 13 laid in the depression 10 to cover the power feeding body 12.


Patent
Toa Corporation | Date: 2015-12-16

Provided is a loudspeaker system capable of easily determining control parameters for controlling the directional characteristics of a speaker set including two or more speaker units. The loudspeaker system is configured to include: a speaker set 11 including two or more speaker units 2; a camera 15 adapted to photograph an acoustic space of the speaker set 11; a monitor 22 adapted to display a camera image 30 photographed by the camera 15; and a directional control parameter generating part 24 adapted to generate directional control parameters providing the directional characteristics of the speaker set 11. The directional control parameter generating parts 24 includes: a target position designation part 101 adapted to, on the basis of user operations, designate target positions 32 on the camera image 30; a directional control angle calculation part 103 adapted to, on the basis of the target positions 32, obtain directional control angles with respect to a front direction of the speaker set 11; and a directional control parameter determination part 104 adapted to, on the basis of the directional control angles , determine the directional control parameters.


Patent
Kurita Water Industries Ltd. and Toa Corporation | Date: 2014-05-12

Provided is a device for measuring the concentration of a dissolved component, whereby the concentration of a plurality of types of dissolved components in water can be measured easily and with good precision. A device for measuring the concentration of a dissolved component has: a cell assembly 3 in which a plurality of cells 1 are connected by a joint member 2 and integrated, and a measurement reagent is accommodated in each of the cells 1; and a measuring main body 5 having a measurement unit (light-emitting element 8 and light-receiving element 9) for measuring transmittance and absorbance, the cells 1 of the cell assembly 3 being inserted into the measurement unit. A cap 4 is detachably mounted to each cell 1.

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