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Matches 51 - 100 out of 16,525

Document Document Title
WO/2019/092432A1
Circular flat panel loudspeaker comprising a resonant with a rear surface opposite the front surface. An exciter is provided at an axial centre of panel and coupled to the rear surface of the panel to cause the panel to vibrate, on opera...  
WO/2019/087922A1
A piezoelectric element comprises a piezoelectric body having a first main surface and a second main surface opposite of each other, and multiple external electrodes arranged on the first main surface. A vibration member has a third main...  
WO/2019/086357A1
A loudspeaker device comprises first and second diaphragms (12, 14) arranged co-axially in an opposed relation to each other to cancel mechanical vibrations. Each diaphragm has multiple voice coils, with the voice coils of the first and ...  
WO/2019/087923A1
A wiring member electrically connected to a piezoelectric element has a first region, a second region and a third region. The first region is positioned on multiple external electrodes and is bonded to the multiple external electrodes. T...  
WO/2019/084724A1
A loudspeaker and a cone thereof. The cone comprises a basically loudspeaker-shaped first diaphragm (10) and a first circular reinforcing rib (20). The first diaphragm (10) comprises a plurality of V-shaped notches (120) having a gradual...  
WO/2019/087834A1
The present invention addresses the problem of providing a speaker vibration plate which has a large rigidity and a sufficient vibration attenuation rate. The speaker vibration plate of the present invention is provided with a resin matr...  
WO/2019/081918A1
A speaker comprises an electroacoustic transducer diaphragm which is mounted between or suspended from multiple suspension pins or suspension components. The suspension pins or suspension components provide mechanical support and acousti...  
WO/2019/077925A1
A speaker (100) is equipped with: a magnetic circuit (110) that is provided with a magnetic gap (111); a voice coil body (120) disposed in a state of being inserted into the magnetic gap (111); a diaphragm (130), to which the voice coil ...  
WO/2019/073948A1
A speaker (100) provided with: a magnetic circuit (110); a voice coil body (120); a diaphragm (130) attached to the voice coil body (120); a housing (140) which accommodates the magnetic circuit (110) and the voice coil body (120), and t...  
WO/2019/074001A1
The present invention provides: a porous PI film which can be used suitably in a speaker diaphragm and has excellent heat resistance, lightweight and excellent acoustic quality properties; and a method for producing the porous PI film. T...  
WO/2019/073242A1
There is disclosed a polymeric film. The film comprises a polymeric material having a repeat unit of formula and a repeat unit of formula wherein Ph represents a phenylene moiety and wherein the shear viscosity, SV, of the polymeric mate...  
WO/2019/071379A1
Thin films are provided comprising a damping adhesive comprising a polysiloxane or mixture of polysiloxanes and exhibiting a tan delta of at least 0.42 for every temperature between 20 ℃ and 250 ℃ and a tan delta at 250 ℃ that is n...  
WO/2019/071970A1
Thin films are provided comprising a damping adhesive comprising a polysiloxane or mixture of polysiloxanes and exhibiting a tan delta of at least 0.42 for every temperature between 20°C and 250°C and a tan delta at 250°C that is no m...  
WO/2019/073697A1
[Problem] The present invention addresses the problem of providing a speaker unit that is low-cost, has good sound quality, and can be made thin. [Solution] A speaker unit comprises: a magnetic circuit 61 in which a space serving as a ma...  
WO/2019/070006A1
A glass plate construct provided with a first glass plate, a second plate disposed facing the first glass plate, and a liquid layer formed by sealing a liquid between the first glass plate and the second plate, the glass plate construct ...  
WO/2019/070007A1
This glass plate constituent body is provided with: at least two plates; a liquid layer retained between the two plates; and a seal material provided between the two plates so as to seal the liquid layer, wherein at least one of the two ...  
WO/2019/070004A1
The purpose of the present invention is to provide a glass plate construct that realizes desirable visibility when applied to a display, etc. This glass plate construct is provided with at least two plates, a liquid layer held between tw...  
WO/2019/070005A1
The present invention provides a display device and a television device with which it is possible to reduce the thickness of the device profile while also realizing desirable acoustic characteristics. This display device is provided with...  
WO/2019/066070A1
The present invention relates to a moulded article that comprises a resin part formed from a thermoplastic resin composition, wherein refinement of cellulose within a thermoplastic resin is possible and refined plant-derived fibres are u...  
WO/2019/066069A1
The present invention relates to a molded article which comprises a resin part that is formed of a thermoplastic resin composition wherein refined cellulose is uniformly dispersed in a thermoplastic resin. This molded article comprises a...  
WO/2019/064959A1
Provided is a lightweight acoustic reproduction device. This acoustic reproduction device is provided with a plurality of flat speakers 11, the plurality of flat speakers 11 being disposed such that normals to sound emitting faces thereo...  
WO/2019/049438A1
Provided is an acoustic device capable of allowing people located in both the front side and rear side to hear reproduced sounds over a wide frequency range. This acoustic device is provided with a flat speaker 3 for low frequency-range ...  
WO/2019/047082A1
Provided is a method for forming an aluminum surface selenium treated nano coating for improving low frequency extension of an earphone. The method comprises: immersing an aluminum film in a water mixed solution of glucose and 2-chloro-4...  
WO/2019/036900A1
A method for coating a membrane on the surface of a speaker diaphragm, at least comprising the following steps: providing a speaker diaphragm (1), arranging a coating membrane on the surface of the speaker diaphragm (1), the coating memb...  
WO/2019/039032A1
This musical instrument is provided with a vibrator that generates sound by vibrating a body to be vibrated in a predetermined direction, wherein the vibrator is provided with a vibrating body that is provided so as to vibrate in the pre...  
WO/2019/033854A1
A differential condenser microphone with double vibrating membranes, comprising: a backplate; a first vibrating membrane supported on a first surface of the backplate in an insulating manner, wherein the backplate and the first vibrating...  
WO/2019/028409A1
Electromagnet venturi pump/transducer systems and methods to make and use same. The membrane is made from a material that can be, for example, a steel membrane, having a ferrite disk that is pulled by the electromagnet to a set point and...  
WO/2019/024732A1
Disclosed is a diaphragm used for a sound-generating apparatus. The diaphragm comprises a central part, a folded ring part provided around the central part and a fixing part provided around the folded ring part, and at least one of the c...  
WO/2019/026678A1
The present disclosure pertains to an information processing device, an information processing method, and a program capable of coordinating and controlling the visual shielding and auditory shielding in a first space with respect to a p...  
WO/2019/021669A1
This edge has an inner notch extended in a diaphragm-side region, and an outer notch extended in a frame-side region in the vicinity of the inner notch, wherein the inner notch and the outer notch each have a recess with a depth equal to...  
WO/2019/022893A1
A method of forming a device having a compliant member includes applying heat to a thermoplastic elastomer to maintain the thermoplastic elastomer in a softened state. The thermoplastic elastomer is extruded in the softened state as a fi...  
WO/2019/023240A1
Circumferential mode vibrations, in a diaphragm of an acoustic transducer, are damped by defining at least one elongated opening extending radially along a portion of a length from the central area to the outer perimeter being covered by...  
WO/2018/215669A3
A micromechanical acoustic transducer comprises, according to a first aspect, a first bender transducer with a free end and a second bender transducer with a free end which are situated in a common plane, wherein the free end of the firs...  
WO/2019/018549A1
A microphone transducer is provided, the microphone transducer comprising a housing and a transducer assembly supported within the housing and defining an internal acoustic space. The transducer assembly includes a magnet assembly, a dia...  
WO/2019/010727A1
Disclosed are a sound production device, a module and an electronic apparatus. The sound production device comprises: a polypropylene film, wherein a plurality of flat high-strength pores are provided inside the polypropylene film, the p...  
WO/2019/008638A1
A sound quality adjustment member (101) is provided to a diaphragm (11) so as to extend from an inner circumferential end part (100a) to an outer circumferential end part (100b) to which an edge (12) is affixed. At the outer circumferent...  
WO/2019/007091A1
A curved-surface diaphragm loudspeaker (100) and a sound generation device. The curved-surface diaphragm loudspeaker (100) comprises a support structure (1), a plurality of magnetic bars (2), a diaphragm (3), and a conductor structure (4...  
WO/2018/235436A1
[Problem] The present invention relates to a laminate which comprises a thermoplastic engineering plastic layer having a thickness of 250 μm or less and a method for producing this laminate; and the present invention specifically provid...  
WO/2018/233409A1
The present invention relates to the technical field of electroacoustic products. Disclosed are a diaphragm and a micro speaker provided with the same. The diaphragm comprises a central portion, a ring portion, and a fixing portion which...  
WO/2018/233410A1
The present invention relates to the technical field of electroacoustic products. Disclosed are a diaphragm and a micro speaker provided with the same. The diaphragm comprises a central portion, a ring portion, and a fixing portion which...  
WO/2018/229242A1
The invention relates to a loudspeaker (10) comprising: - a frame (12); - a device (20) suitable for generating a magnetic field in a magnetic circuit (16) exhibiting an air gap (18); - turns (24) of conductive materials suitable for mov...  
WO/2018/224616A1
A loudspeaker (100) comprises: a magnetic unit (M), a voice coil (1) axially movable in the air gap (T) of the magnetic unit, a basket (2) fixed to the magnetic unit (M), a membrane (4) fixed to the cylindrical support (10) of the voice ...  
WO/2018/225181A1
The loudspeaker device according to one embodiment of the present invention is provided with: a plurality of microphones including at least a first microphone and a second microphone; and a loudspeaker unit, which has a vibrating surface...  
WO/2018/226869A1
A bobbin for an electro- acoustic driver includes an outer surface, a substantially planar surface at an end of the bobbin, and a bobbin axis that is substantially coaxial with a housing axis. The bobbin is disposable inside a housing an...  
WO/2018/224572A1
The invention relates to a sound output device (2) for a motor vehicle (1), which comprises a housing (6) and at least one acoustic actuator (7) arranged in the housing (6) and is configured for permanent fastening in the motor vehicle (...  
WO/2018/220054A1
The invention relates to an acoustic chamber having: - a box structure (3) forming a first edge (24) defining an opening (26), - at least one loudspeaker having at least one diaphragm (50) that is configured to emit sound waves and exten...  
WO/2018/220028A1
An electrodynamic loudspeaker (5) comprising: - a frame (3), - an assembly moving in translation with respect to the frame (3) along an axis (D) of the loudspeaker (5) about an equilibrium position that is occupied when the loudspeaker i...  
WO/2018/220061A1
The invention relates to an electrodynamic loudspeaker having: - a frame (17), - an assembly (23) that is movable in translation with respect to the frame along an axis (D) of the loudspeaker about an equilibrium position that is taken u...  
WO/2018/215669A2
A micromechanical acoustic transducer comprises, according to a first aspect, a first bender transducer with a free end and a second bender transducer with a free end which are situated in a common plane, wherein the free end of the firs...  
WO/2018/216711A1
Provided are a piezoelectric-type flat speaker with which a higher than conventional sound pressure can be obtained in a low-frequency range, and a method of forming the same. The piezoelectric-type flat speaker is provided with: a flat ...  

Matches 51 - 100 out of 16,525