Abstract: A laser processing head includes a tubular main body, and a gas supply part disposed in the main body and allowing an assist gas supplied from outside to flow into an internal space of the main body. The gas supply part includes a first gas supply hole extending along a first axis on a plane orthogonal to an axis of a tube of the main body and opening at an inner circumferential surface of the main body, a second gas supply hole forming a predetermined angle relative to the first axis around the axis, extending along a second axis on the plane orthogonal to the axis and opening at the inner circumferential surface, and a flow path forming ring facing the inner circumferential surface with a predetermined interval, and forming a cylindrical space extending along the axis between the flow path forming ring and the inner circumferential surface.

Abstract: By performing both noise cancellation and echo cancellation, a high-quality main voice signal is generated. A voice input/output apparatus includes a noise acquirer that is arranged toward an outside of a body of a user and acquires external noise arriving from the outside of the user, a voice output unit that accepts an input of a voice signal and outputs a voice to an ear canal of the user, a main voice acquirer that acquires a mixed voice, in which the external noise, the output voice, and a main voice of the user transmitted from a vocal cord of the user through the ear canal are mixed, and outputs a mixed voice signal, a noise canceler that processes the mixed voice signal using a noise signal based on the external noise, and an echo canceler that processes the mixed voice signal using the voice signal.

Abstract: A control device controls a beam vibrating mechanism to vibrate a laser beam in a C-shaped vibration pattern in which a beam spot is moved from a first irradiation position at a front end in a cutting advancing direction to a second irradiation position at a rear side and displaced in an orthogonal direction to the cutting advancing direction, and is moved from the second irradiation position to a third irradiation position at a front end and displaced in the orthogonal direction to the cutting advancing direction, and movement from the first irradiation position to the third irradiation position via the second irradiation position, and movement from the third irradiation position to the first irradiation position via the second irradiation position are repeated. The control device performs control to cut the sheet metal by causing beam spots in the first to third irradiation positions to overlap one another.

Abstract: This invention provides a signal processing apparatus capable of obtaining an output signal of sufficiently high quality if the phase of an input signal is largely different from the phase of a true voice. The signal processing apparatus includes a voice detector that receives a mixed signal including a voice and a signal other than the voice and obtains existence of the voice as a voice flag, a corrector that receives the mixed signal and the voice flag and obtains a corrected mixed signal generated by correcting the mixed signal in accordance with a state of the voice flag, and a shaper that receives the corrected mixed signal and shapes the corrected mixed signal.

Abstract: By performing both noise cancellation and echo cancellation, a high-quality main voice signal is generated. A voice input/output apparatus includes a noise acquirer that is arranged toward an outside of a body of a user and acquires external noise arriving from the outside of the user, a voice output unit that accepts an input of a voice signal and outputs a voice to an ear canal of the user, a main voice acquirer that acquires a mixed voice, in which the external noise, the output voice, and a main voice of the user transmitted from a vocal cord of the user through the ear canal are mixed, and outputs a mixed voice signal, a noise canceler that processes the mixed voice signal using a noise signal based on the external noise, and an echo canceler that processes the mixed voice signal using the voice signal.

Abstract: There is provided an object identification apparatus for identifying a stationary object and a moving object. The object identification apparatus includes a phase difference calculator that calculates phase difference information between a transmission signal and a reception signal obtained by reflecting, by surfaces of the moving object and the stationary object in a space, the transmission signal emitted to the space and receiving the reflected transmission signal, a distance calculator that calculates distance information using the phase difference information, a distance information separator that separates the distance information into moving object distance information as distance information about the moving object and stationary object distance information as distance information about the stationary object, and an identifier that identifies the stationary object and the moving object based on the stationary object distance information and the moving object distance information.

Abstract: A beam vibrating mechanism vibrates a laser beam in a parallel direction with a cutting advancing direction of a sheet metal. An amplitude amount of the laser beam is Qx, a radius of a first circular region having an area occupying 86% beam energy at a center side of total beam energy in a sectional area of the laser beam on a top surface of the sheet metal is rtop, and a radius of a second circular region having an area occupying 86% beam energy at a center side of total beam energy in a sectional area of the laser beam in a bottom surface of the sheet metal is rbottom. A calculation value Va is expressed by the expression: Va=(Qx+rtop+?{square root over (2)}×rbottom). When a standard deviation of the calculation value Va at a time of cutting sheet metals of a plurality of plate thicknesses is Vasd, a nozzle having a diameter of an opening between a minimum value obtained by 2Va?Vasd, and a maximum value obtained by 2.5 Va+Vasd is used as a nozzle attached to a machining head.

Abstract: A machining head emits a laser beam for cutting sheet metal of stainless steel. A moving mechanism moves the machining head relatively to a surface of the sheet metal. A beam vibrating mechanism vibrates a laser beam in a parallel direction with a cutting advancing direction of the sheet metal. In a machining condition database, a single specific vibration frequency at which cutting of the sheet metal is possible is set to a maximum moving velocity at which cutting of the sheet metal is possible, and a plurality of vibration frequencies from a maximum frequency to a minimum frequency at which cutting of the sheet metal is possible are set to a moving velocity more than or equal to a minimum moving velocity and less than the maximum moving velocity at which cutting of the sheet metal is possible.

Abstract: A laser processing head includes a tubular main body, and a gas supply part disposed in the main body and allowing an assist gas supplied from outside to flow into an internal space of the main body. The gas supply part includes a first gas supply hole extending along a first axis on a plane orthogonal to an axis of a tube of the main body and opening at an inner circumferential surface of the main body, a second gas supply hole forming a predetermined angle relative to the first axis around the axis extending along a second axis on the plane orthogonal to the axis and opening at the inner circumferential surface, and a flow path forming ring facing the inner circumferential surface with a predetermined interval, and forming a cylindrical space extending along the axis between the flow path forming ring and the inner circumferential surface.

Abstract: A nozzle for laser machining is provided with a flange portion and formed in an annular shape, and includes a first communication hole communicating between a first end portion and a second end portion on a side opposite to the first end portion, a circumferential groove portion provided between the flange portion and the second end portion, and a plurality of second communication holes communicating between a surface of the flange portion on a first end portion side and a side surface of the circumferential groove portion on the first end portion side. A side surface of the circumferential groove portion on a second end portion side extends so that the plurality of second communication holes are invisible from the second end portion side.

Abstract: By performing both noise cancellation and echo cancellation, a high-quality main voice signal is generated. A voice input/output apparatus includes a noise acquirer that is arranged toward an outside of a body of a user and acquires external noise arriving from the outside of the user, a voice output unit that accepts an input of a voice signal and outputs a voice to an ear canal of the user, a main voice acquirer that acquires a mixed voice, in which the external noise, the output voice, and a main voice of the user transmitted from a vocal cord of the user through the ear canal are mixed, and outputs a mixed voice signal, a noise canceler that processes the mixed voice signal using a noise signal based on the external noise, and an echo canceler that processes the mixed voice signal using the voice signal.

Abstract: A galvano scanner unit vibrates a laser beam when sheet metal is cut by irradiation of the sheet metal with the laser beam while a machining head is relatively moved with respect to the sheet metal. A focusing lens drive section moves a focal point of the laser beam with which the sheet metal is irradiated in an orthogonal direction orthogonal to a surface of the sheet metal. A focal position control section controls the focusing lens drive section to locate the focal point of the laser beam in a predetermined position in the orthogonal direction. A galvano control section controls the galvano scanner unit to change an amplitude with which the laser beam is vibrated, according to a position of the focal point in the orthogonal direction.

Abstract: This invention provides a signal processing apparatus capable of obtaining an output signal of sufficiently high quality if the phase of an input signal is largely different from the phase of a true voice. The signal processing apparatus includes a voice detector that receives a mixed signal including a voice and a signal other than the voice and obtains existence of the voice as a voice flag, a corrector that receives the mixed signal and the voice flag and obtains a corrected mixed signal generated by correcting the mixed signal in accordance with a state of the voice flag, and a shaper that receives the corrected mixed signal and shapes the corrected mixed signal.

Abstract: A machining head emits a laser beam for cutting sheet metal of stainless steel. A moving mechanism moves the machining head relatively to a surface of the sheet metal. A beam vibrating mechanism vibrates a laser beam in a parallel direction with a cutting advancing direction of the sheet metal. In a machining condition database, a single specific vibration frequency at which cutting of the sheet metal is possible is set to a maximum moving velocity at which cutting of the sheet metal is possible, and a plurality of vibration frequencies from a maximum frequency to a minimum frequency at which cutting of the sheet metal is possible are set to a moving velocity more than or equal to a minimum moving velocity and less than the maximum moving velocity at which cutting of the sheet metal is possible.

Abstract: A beam vibrating mechanism vibrates a laser beam in a parallel direction with a cutting advancing direction of a sheet metal. An amplitude amount of the laser beam is Qx, a radius of a first circular region having an area occupying 86% beam energy at a center side of total beam energy in a sectional area of the laser beam on a top surface of the sheet metal is rtop, and a radius of a second circular region having an area occupying 86% beam energy at a center side of total beam energy in a sectional area of the laser beam in a bottom surface of the sheet metal is rbottom. A calculation value Va is expressed by the expression. Va=(Qx+rtop+{right arrow over (?2)}×rbottom) When a standard deviation of the calculation value Va at a time of cutting sheet metals of a plurality of plate thicknesses is Vasd, a nozzle having a diameter of an opening between a minimum value obtained by 2Va?Vasd, and a maximum value obtained by 2.5 Va+Vasd is used as a nozzle attached to a machining head.

Abstract: A laser cutting nozzle includes an inner nozzle and an outer nozzle. The inner nozzle exhibits a tube shape having a through hole on an axis and having a diameter decreasing on a first end portion side and includes a notch extending in the axis direction along an outer peripheral surface on a second end portion side. The outer nozzle is fitted to the outer peripheral surface of the inner nozzle and includes a vent passage including the notch and communicating between the first end portion and the second end portion in the axis direction. A minimum flow cross-sectional area of the vent passage matches an opening area of the notch in an end surface on the second end portion side.

Abstract: A control device controls a beam vibrating mechanism to vibrate a laser beam in a C-shaped vibration pattern in which a beam spot is moved from a first irradiation position at a front end in a cutting advancing direction to a second irradiation position at a rear side and displaced in an orthogonal direction to the cutting advancing direction, and is moved from the second irradiation position to a third irradiation position at a front end and displaced in the orthogonal direction to the cutting advancing direction, and movement from the first irradiation position to the third irradiation position via the second irradiation position, and movement from the third irradiation position to the first irradiation position via the second irradiation position are repeated. The control device performs control to cut the sheet metal by causing beam spots in the first to third irradiation positions to overlap one another.

Abstract: There is provided a signal processing apparatus that obtains a speech signal with sufficiently reduced wind noise.

Abstract: This invention provides a signal processing apparatus for receiving a mixed signal including at least one target signal and outputting a desired composite signal. The signal processing apparatus includes a storage unit that stores an acoustic signal, and a signal processor that receives a mixed signal including at least one target signal, and composites the acoustic signal stored in a storage unit with the at least one target signal.