US Pat. No. 10,142,719

MICROPHONE

Audio-Technica Corporatio...

1. A microphone, comprising:a head case; and
an arm that supports the head case,
wherein
the head case includes a microphone unit and a light emitter,
a proximal end portion of the arm includes a light emitter circuit that turns on the light emitter on a basis of potential information of a specific terminal,
one end of the light emitter is connected to the light emitter circuit through a wire that passes through an inside of the arm,
a second end of the light emitter is connected to the microphone unit in the head case,
the light emitter circuit includes a switching element that switches on and off the light emitter, and
the specific terminal is connected to a control signal input side of the switching element.

US Pat. No. 10,149,034

EARPHONE

AUDIO-TECHNICA CORPORATIO...

1. An earphone comprising:a first balanced armature driver unit reproducing sound waves in a high-frequency range;
a second balanced armature driver unit reproducing sound waves other than the sound waves reproduced from the first driver unit;
a unit case in which the first and second balanced armature driver units are housed;
a sound delivery tube for leading sound waves from the first and second balanced armature driver units to a user's ear canal, the sound delivery tube being formed to communicate with the unit case; and
an eartip attached to an outer circumferential surface of the sound delivery tube,
wherein a sound emission axis of the first balanced armature driver unit and a sound emission axis of the second balanced armature driver unit are disposed in parallel to each other, and the sound emission axis of the first balanced armature driver unit passes through in an opening of the sound delivery tube, and
the first balanced armature driver unit is disposed in the unit case such that the sound emission axis of the first balanced armature driver unit coincides with a central axis of the opening of the sound delivery tube, and is configured to reach linearly directly an outside of the sound delivery tube without contacting an inner part of the sound delivery tube.

US Pat. No. 10,021,481

MICROPHONE JOINT

Audio-Technica Corporatio...

1. A microphone joint to be coupled to a unit case accommodating a microphone unit and a connector case accommodating a connector configured to output signals from the microphone unit to an external device, the microphone joint comprising:a first unit to be coupled to the unit case;
a second unit to be coupled to the connector case; and
a conductive member disposed between the first unit and the second unit, wherein
the first unit is supported by the second unit with the conductive member and is rotatable relative to the second unit,
the conductive member has resilience,
the first unit includes a first terminal to be connected to an output terminal of the unit case,
the second unit includes a second terminal to be connected to an input terminal of the connector case, and
the conductive member has an insertion hole into which an electric wire for connecting the first terminal and the second terminal is to be inserted.

US Pat. No. 9,820,026

MICROPHONE

Audio-Technica Corporatio...

1. A microphone having unidirectivity, comprising:
a bidirectional ribbon microphone unit; and
an omnidirectional condenser microphone unit, wherein,
the ribbon microphone unit includes a pair of ribbon diaphragms, and
the condenser microphone unit is positioned in a magnetic gap of the ribbon microphone unit and between the pair of ribbon
diaphragms.

US Pat. No. 10,075,781

MICROPHONE

Audio-Technica Corporatio...

1. A microphone comprising:a grip body having a shape of a cylinder;
a head case attached to the grip body;
a microphone unit disposed inside the head case;
an internal cylinder to which the microphone unit is attached;
an elastic member configured to undergo shear deformation in a longitudinal direction of the grip body; and
a head-case attaching member to which the head case is attached, wherein
the internal cylinder is disposed inside the grip body with the elastic member,
the head case is attached to the grip body with the head-case attaching member,
the head-case attaching member has a rear end face,
the internal cylinder has an outer circumferential surface,
the elastic member has a top surface and a bottom surface,
the head case is attached to the grip body with the head-case attaching member,
the internal cylinder has a flange portion disposed on the outer circumferential surface of the internal cylinder,
the head-case attaching member is in contact with a part of the top surface of the elastic member,
the flange portion is in contact with a part of the bottom surface of the elastic member,
the elastic member is supported diagonally by the head-case attaching member and the flange portion,
the rear end face of the head-case attaching member is in contact with an outer circumferential portion of the top surface of the elastic member,
the flange portion is in contact with an inner circumferential portion of the bottom surface of the elastic member,
the elastic member has a shape of a ring, the elastic member having an inner circumferential surface and an outer circumferential surface,
the elastic member is attached to the outer circumferential surface of the internal cylinder, and
the elastic member has a depression in at least one of the outer circumferential surface of the elastic member and the inner circumferential surface of the elastic member,
wherein the depression is disposed on an entire circumference of the elastic member.

US Pat. No. 10,021,490

MICROPHONE

AUDIO-TECHNICA CORPORATIO...

1. A microphone comprising:a microphone case having a shape of a hollow cylinder with a bottom end, the microphone case having an opening, an inner circumferential surface, an exterior and an interior;
a microphone unit accommodated in the microphone case;
a cord bush comprising a first hole through which a microphone cord outputting audio signals from the microphone unit passes, the cord bush being fit to the opening of the microphone case, the cord bush comprising a groove or a second hole that is different from the first hole;
a sound transmission material accommodated in the microphone case; and
a communication path establishing communication between the exterior and the interior of the microphone case, wherein
the cord bush defines a part or a whole of the communication path with the groove or the second hole,
the communication path is covered by the sound transmission material from a front of the communication path, and
an axis of the first hole and an axis of the groove or second hole are displaced in the radial direction of the cord bush from one another.

US Pat. No. 9,942,649

OSCILLATION PREVENTING MEMBER FOR STYLUS-TIP PROTECTOR AND PICKUP CARTRIDGE

AUDIO-TECHNICA CORPORATIO...

1. An oscillation-preventing member for a stylus-tip protector, comprising:a base member; and
a pair of leg parts integrally formed with the base member by employing a flexible sheet material, the pair of leg parts having a width in the same direction and being bent at the same angle in the same direction with respect to the base member,
wherein the oscillation preventing member is mounted on a pickup cartridge, sandwiching the pickup cartridge from both outer sides by the pair of leg parts, and
wherein the oscillation-preventing member is configured to prevent oscillation of a stylus-tip protector by bringing the base member into contact with part of the stylus-tip protector covering a reproducing stylus.

US Pat. No. 10,003,875

PHANTOM POWER SUPPLY DEVICE

AUDIO-TECHNICA CORPORATIO...

1. A phantom power supply device for supplying power to a condenser microphone from which an audio signal is outputted through a balanced line having a hot signal line and a cold signal line, the phantom power supply device comprising:a first DC power supply that supplies a supply current to the condenser microphone via the hot signal line and the cold signal line through a hot supply resistor and a cold supply resistor, respectively,
a second DC power supply, and
a remote control switch having one terminal connected to one terminal of the second DC power supply and controlling energization to a current drive device mounted on the condenser microphone,
wherein an added voltage of the first DC supply and the second DC supply is supplied to the current drive device mounted on the condenser microphone by an ON operation of the remote control switch.

US Pat. No. 10,028,048

HEADPHONES

AUDIO-TECHNICA CORPORATIO...

1. A headphone comprising:a driver unit;
a baffle plate including a top portion supporting the driver unit, a peripheral edge portion located outwardly and downwardly apart from the top portion, and a middle portion extending inclinedly from the top portion to the peripheral edge portion, the baffle plate having a convex shape so that a space is formed to be surrounded by the middle portion inside the peripheral edge portion;
a housing covering back sides of the baffle plate and the driver unit to form a back cavity at the back sides of the baffle plate and the driver unit inside housing; and
an ear pad attached to the peripheral edge portion of the baffle plate at a front side of the baffle plate to form a front cavity at the front side of the baffle plate inside the ear pad, the front cavity being acoustically communicated with the space surrounded by the middle portion,
wherein the baffle plate includes at least one through hole through which the back cavity and the space surrounded by the middle portion are acoustically communicated with each other,
the at least one through hole is arranged apart from the ear pad such that a sound wave emitted from the driver unit to the back cavity passes through the at least one through hole and arrives at the front cavity through the space surrounded by the middle portion, and
a low-frequency range sound wave of the sound wave emitted from the driver unit is cancelled in the space surrounded by the middle portion and the front cavity.

US Pat. No. 10,117,013

DIGITALLY DRIVEN HEADPHONE

AUDIO-TECHNICA CORPORATIO...

1. A digitally driven headphone comprising:a first sound emission unit;
a second sound emission unit; and
a signal line, wherein
the first sound emission unit comprises:
at least one magnetic body into which the signal line is inserted,
a signal processing circuit configured to process digital signals from a sound source,
a circuit board on which the signal processing circuit is disposed,
a driving part configured to drive in response to the digital signals processed by the signal processing circuit, and
a diaphragm configured to vibrate in response to driving of the driving part,
wherein the driving part comprises:
a magnetic circuit, and
a voice coil which is disposed in a magnetic flux generated in the magnetic circuit,
the signal processing circuit has an output part disposed at an end portion of the circuit board which outputs the digital signals processed by the signal processing circuit to the voice coil and the second sound emission unit,
the signal line is inserted into the at least one magnetic body, and is connected to the output part of the signal processing circuit and the second sound emission unit, and
the at least one magnetic body is disposed adjacent to the output part.

US Pat. No. 10,536,762

MICROPHONE DEVICE AND CASE FOR MICROPHONE DEVICE

AUDIO-TECHNICA CORPORATIO...

1. A microphone device comprising:a case that has a circuit board therein;
a microphone capsule that is apart from the case and has a plurality of sound collecting parts arranged on a surface of a sphere at predetermined intervals;
pillars that support the microphone capsule and couple (i) an opposed face of the case facing the microphone capsule and (ii) the microphone capsule; and
a protrusion part that is placed between the pillars and protrudes from the opposed face toward the microphone capsule, the protrusion part being formed such that a diameter of the protrusion part becomes smaller from a root coupled to the opposed face toward a tip.

US Pat. No. 10,178,471

UNIDIRECTIONAL CONDENSER MICROPHONE UNIT

AUDIO-TECHNICA CORPORATIO...

1. A unidirectional condenser microphone unit, comprising:a unit case including:
a diaphragm that vibrates upon receiving a sound wave;
a fixed electrode disposed to face the diaphragm;
an insulating base that supports the fixed electrode to form a back air chamber between the insulating base and the fixed electrode; and
a fixed electrode leading terminal made of metal that is attached to the insulating base, and that leads a signal voltage generated at the fixed electrode,
wherein the unit case is provided with a front acoustic terminal hole formed in a front side of the diaphragm and a rear acoustic terminal hole for communication with the back air chamber,
wherein the unit case is provided with a second air chamber different from the back air chamber and
the fixed electrode leading terminal is provided with a communication path for communicating between the back air chamber and the second air chamber.

US Pat. No. 10,399,735

ASSEMBLY-TYPE PACKAGING BOX

AUDIO-TECHNICA CORPORATIO...

1. An assembly-type packaging box, comprising:a bottom panel,
a front panel and a rear panel erecting along valley fold lines respectively in front of and behind the bottom panel, and
outer panels, upper-edge panels, and inner panels which are sequentially connected to right and left of the bottom panel across valley fold lines, and which are sequentially folded such that a rear folding tab extending from a side of the rear panel is folded in between the outer panel and the inner panel and the upper-edge panels form a frame having a predetermined width at an opening portion,
front folding tabs extending from sides of the front panel, each being folded in between the outer panel and the inner panel, the front folding tab and the rear folding tab being connected between the outer panel and the inner panel,
an top panel and a front cover panel connected to the rear panel across valley fold lines, and
front-panel inserting tabs connected to sides of the front cover panel across valley fold lines, each being inserted between the outer panel and the front folding tab,
wherein folding protrusions, each fixing a position of the upper-edge panel by abutting on the rear folding tab folded in between the outer panel and the inner panel, are formed only on rear sides of the inner panels.

US Pat. No. 10,313,774

EARPHONE

AUDIO-TECHNICA CORPORATIO...

1. An earphone comprising:a diaphragm;
at least one fixed electrode constituting a capacitor with the diaphragm;
a housing accommodating the diaphragm and the at least one fixed electrode, the housing having an interior and an exterior;
a sound conduit protruding forward from the housing, the sound conduit having an interior;
at least one communication hole establishing communication between the interior and the exterior of the housing; and
an opening and closing mechanism to open and close the at least one communication hole, wherein
a sum of a volume of an interior space of the sound conduit and a volume of a space in a front of the diaphragm in communication with the interior space of the sound conduit in the interior space of the housing forms a front air chamber with a front air chamber volume,
a volume of a space in a rear of the diaphragm in the interior space of the housing forms a rear air chamber with a rear air chamber volume, and
the front air chamber volume is smaller than the rear air chamber volume, and
wherein the front air chamber is configured to be independent from the rear air chamber in the interior space of the housing and does not communicate with the rear air chamber.

US Pat. No. 10,506,349

ELECTROACOUSTIC TRANSDUCER, METHOD OF MANUFACTURING ELECTROACOUSTIC TRANSDUCER, AND ELECTROACOUSTIC TRANSDUCING DEVICE

AUDIO-TECHNICA CORPORATIO...

1. An electroacoustic transducer comprising:a diaphragm;
a housing accommodating the diaphragm;
an elastic member being accommodated in the housing; and
a pressing member pressing the elastic member, wherein
the elastic member is annular,
the diaphragm comprises
a dome portion, and
an attaching portion disposed on an outer rim of the dome portion,
the housing comprises
a stepped portion,
the stepped portion comprises
a mounting surface on which the attaching portion is mounted, and
a wall surface extending in a direction separating from the mounting surface,
the elastic member has
an inner circumference,
an outer circumference, and
a rear surface having an inner circumferential end,
the pressing member presses the elastic member against the attaching portion,
the outer circumference of the elastic member stretches to the wall surface,
the inner circumference of the elastic member stretches to a border between the dome portion and the attaching portion, and
the inner circumferential end is positioned at the border between the dome portion and the attaching portion.

US Pat. No. 10,389,057

CHARGER FOR MICROPHONE

AUDIO-TECHNICA CORPORATIO...

1. A charger for a microphone which has power supply side terminal pins that are brought into contact with charging terminals provided on a bottom surface of a grip portion of the microphone and which charges a secondary battery built into the microphone from the power supply side terminal pins via the charging terminals, the charger comprising:a case which has on its upper surface a grip insertion hole into which a lower end portion of the grip portion is inserted, wherein
a pin support stand which supports the power supply side terminal pins at a predetermined lower position within the grip insertion hole such that the power supply side terminal pins exhibit in the grip insertion hole;
a pin protection part, which has a pin insertion hole into which the power supply side terminal pins are inserted, and which is up/down moveable along the grip insertion hole at a position above the pin support stand; and
an up/down guide means for guiding the pin protection part between an elevated position and a lowered position, are provided in the case, and
wherein the up/down guide means,
at the time of non-charging with the grip portion removed from the grip insertion hole, moves the pin protection part up to the elevated position such that the power supply side terminal pins are buried in the pin insertion holes, and then restricts the pin protection part at the same position, and
at the time of charging with the grip portion inserted into the grip insertion hole, releases the restriction at the elevated position by the grip portion to make the pin protection part movable to the lowered position such that the tips of the power supply side terminal pins project from the pin insertion holes.

US Pat. No. 10,390,118

SOUND COLLECTING DEVICE

AUDIO-TECHNICA CORPORATIO...

1. A sound collecting device comprising:a microphone array having unit holders to each of which a microphone unit is attached, the unit holders having connecting portions formed thereon, the connecting portions being connected to each other such that a directional axis of each microphone unit is directed outward from a face of a regular polyhedron;
a frame member disposed outside the microphone array in a manner to surround the microphone array; and
an even number of ring-shaped elastic bodies that connect a part of the frame member and the unit holders connected to each other, at a plurality of positions therebetween such that the microphone array is positioned at a central portion of the frame member,
wherein a half of the even number of elastic bodies are connected in a manner to be twisted in one direction from the frame member toward the microphone array, and
another half of the elastic bodies are connected in a manner to be twisted in an opposite direction from the frame member toward the microphone array.

US Pat. No. 10,321,214

MICROPHONE

AUDIO-TECHNICA CORPORATIO...

1. A microphone to be mounted to and dismounted from a microphone stand that comprises a base housing having a connector mounting hole and an input connector having a connector-supporting hole and being mounted into the connector mounting hole, the microphone comprising:a microphone unit;
an output connector to be coupled with the input connector and configured to output sound signals from the microphone unit;
a case accommodating the output connector; and
an elastic member disposed on an outer circumferential surface of the case, wherein
at least a portion of the elastic member is configured to fit into the connector-supporting hole while a portion of the case is inserted in the connector-supporting hole.

US Pat. No. 10,403,260

DIGITAL ELECTROACOUSTIC TRANSDUCER APPARATUS

AUDIO-TECHNICA CORPORATIO...

1. A digital electroacoustic transducer apparatus comprising:a signal processing circuit that generates a digital processing signal based on a digital signal from a sound source;
a first voice coil that receives the digital processing signal;
a sound pickup unit that picks up noise and generates a noise signal, the sound pickup unit including a first microphone that generates a first noise signal, and a second microphone that generates a second noise signal;
a noise canceling circuit that generates a cancel signal based on the noise signal, the noise canceling circuit generating a first cancel signal based on the first noise signal and a second cancel signal based on the second noise signal, the cancel signal being obtained by adding the first cancel signal and the second cancel signal together;
a second voice coil that receives the cancel signal applied from the noise cancelling circuit; and
a diaphragm to which the first voice coil and the second voice coil are attached,
wherein the first microphone is a feedforward microphone, and
the second microphone is a feedback microphone.

US Pat. No. 10,382,852

CONDENSER MICROPHONE CIRCUIT

Audio-Technica Corporatio...

1. A condenser microphone circuit comprising:a microphone unit;
a field effect transistor (FET) configured to convert output impedance of the microphone unit;
a constant current diode configured to supply a current to the FET;
a collector grounding first transistor configured to generate an operation power supply of the FET;
a first resistor configured to set base potential of the first transistor;
a collector grounding second transistor configured to amplify an output signal from the FET;
a second resistor configured to set base potential of the second transistor; and
an output circuit configured to output a signal from the microphone unit, wherein
a base of the first transistor is connected to a source of the FET,
an emitter of the first transistor is connected to a drain of the FET,
a base of the second transistor is connected to a drain of the FET,
an emitter of the second transistor is connected to the output circuit, and
the second resistor divides voltage on a cathode side of the constant current diode.

US Pat. No. 10,225,409

CONFERENCE SYSTEM

AUDIO-TECHNICA CORPORATIO...

1. A conference system comprising:a control unit (CU); and
a plurality of discussion units (DUs), wherein at least some of the DUs have a microphone mounted thereon,
wherein for each discussion unit with a microphone:
the discussion unit transmits audio information to the control unit,
the control unit repeatedly transmits and receives a running packet to and from the discussion unit,
the discussion unit comprises:
a DU control portion, and
a DU communication portion,
the DU control portion adds a request flag to the running packet,
the DU communication portion transmits the running packet, with the request flag added, to the control unit,
the control unit comprises:
a CU storage portion,
an audio slot, and
a CU control portion,
the CU storage portion stores control information for controlling operations of the control unit and the discussion unit,
the audio slot receives the audio information from the discussion unit,
the CU control portion assigns the audio slot to the discussion unit that transmitted the running packet with the request flag added,
the control information includes:
addition mode information, specifying an addition mode among a plurality of addition modes for adding the request flag to the running packet, and
assignment mode information, specifying an assignment mode among a plurality of assignment modes for assigning the audio slot to the discussion unit, which transmitted the running packet with the request flag added, when the audio slot is not vacant,
the addition mode information is stored in the CU storage portion in association with the assignment mode information,
the addition mode is a mode related to a setting of a trigger for turning on the microphone, and
the assignment mode is a mode related to an on/off setting of an override in the assignment on the audio slot.

US Pat. No. 10,666,809

CONFERENCE SYSTEM

Audio-Technica Corporatio...

1. A conference system comprising:a control unit; and
a discussion unit, wherein
the discussion unit is connected via a communication line to the control unit,
the control unit repeatedly transmits and receives a running packet to and from the discussion unit,
the running packet includes a counter flag,
the control unit comprises:
a CU communication portion,
a CU storage portion, and
a CU control portion,
the discussion unit comprises:
a DU control portion, and
a DU communication portion,
the CU control portion resets a count value of the counter flag included in the running packet transmitted to the discussion unit,
the CU communication portion transmits the running packet to the discussion unit,
the DU control portion increments the count value of the counter flag,
the DU communication portion transmits the running packet, which includes the counter flag with the incremented count value, to the control unit,
the CU storage portion stores the count value of the counter flag included in the running packet received by the control unit from the discussion unit, and
each time the control unit receives the running packet from the discussion unit, the CU control portion compares the count value stored in the CU storage portion and the count value of the counter flag included in the running packet received by the control unit from the discussion unit.

US Pat. No. 10,225,663

MICROPHONE WITH A RESONATOR

AUDIO-TECHNICA CORPORATIO...

1. A microphone with a resonator, comprising:a microphone case having one opening at a front side of the microphone case and accommodating a microphone unit in the opening;
a piece of a double-sided adhesive tape whose back side is attached to the front side of the microphone case; and
a filter adhered to a front side of the piece of the double-sided adhesive tape so as to cover the opening of the microphone case,
wherein the piece of the double-sided adhesive tape is provided with sound introduction holes through which sound waves are introduced to the microphone unit from the filter, and
the piece of the double-sided adhesive tape functions as a resonator to adjust a frequency response at a high frequency.