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Matches 301 - 350 out of 20,340

Document Document Title
WO/2017/018313A1
Provided are: an electroacoustic conversion film which has high conversion efficiency and is capable of reproduction with a sufficient sound volume; a method for producing this electroacoustic conversion film; an electroacoustic transduc...  
WO/2017/018307A1
A vibrator array sensor is provided with a support plate (1), and a piezoelectric laminate (2) formed by laminating a plurality of piezoelectric layers (21), and the piezoelectric laminate (2) is provided with a plurality of internal ele...  
WO/2017/013665A1
There is provided a DSR speaker comprising at least a central moving element, a plurality of peripheral flexure benders, each flexure bender comprising at least a pair of electrodes and at least a piezoelectric material layer, the flexur...  
WO/2017/009516A1
The invention relates to a wave-emitting device comprising an electromechanical actuator stimulated by a signal generator that allows it to generate torsional waves with a higher amplitude, and to an ultrasonic transducer comprising said...  
WO/2017/011629A1
Transducers and processes of forming the transducers are described. The transducers are produced as a monolithic body of a ceramic material and electrodes embedded in and encased by the ceramic material, with the ceramic material and the...  
WO/2017/005395A1
The invention relates to a sound transducer (10; 10a to 10f), comprising a diaphragm (11; 62) and at least one piezo actuator (20; 20a; 40) which is arranged in operative connection with the diaphragm (11; 62), wherein the direction of v...  
WO/2017/006976A1
An organism removal device is provided with a reproduction means configured by aligning a plurality of radiator bands at intervals determined by the diameter of a vibrating plate comprising some of a plurality of ultrasonic oscillators, ...  
WO/2017/006590A1
Disclosed is an ultrasound probe wherein a backing having built-in lead arrays is disposed on the rear surface side of a plurality of vibrating elements, and backing terminal arrays connected to the lead arrays are provided on the lower ...  
WO/2017/002674A1
The objective of the present invention is to make it easy to form an ultrasonic probe capable of transmitting ultrasonic waves having a frequency at least equal to 200 MHz, and an ultrasonic testing device. To this end, a laminated piezo...  
WO/2017/002573A1
The objective of the present invention is to provide an omnidirectional electro-acoustic converter that is capable of reproducing with high quality and with sufficient volume over a wide frequency band, and which uses a small number of c...  
WO/2016/208425A1
According to the present invention, a lower electrode is prepared, and a composite containing a sol-gel solution and a piezoelectric powder is applied by spraying onto the lower electrode. The applied complex is then sintered to form a p...  
WO/2016/208872A1
An ultrasonic transducer assembly for beam focusing comprises: a piezoelectric element formed concavely such that ultrasonic waves can be focused at a first focusing point; and an acoustic lens attached to the concave surface of the piez...  
WO/2016/208385A1
Provided are: an electroacoustic conversion film which is capable of reproduction with a sufficient sound volume, while being capable of preventing appearance defects; and an electroacoustic transducer. This electroacoustic conversion fi...  
WO/2016/206828A1
The invention relates to a method for heating an ultrasonic transducer (10), in which an interior space (16) of the ultrasonic transducer (10) together with a membrane element (12) is heated by thermal emission of a component, wherein th...  
WO/2016/210360A1
Methods and apparatus for verifying a transducer are provided. In preferred embodiments, the flow of current on a wire that provides power to both a micro-processor and a transducer is reversed. A wireless communication chip listens for ...  
WO/2016/204295A1
Provided is an ultrasonic wave detecting device that allows exchange of a piezoelectric vibrator, including: a cylindrical rigid wall fixed to a rear surface of a vehicle fender; a lid that is detachably attached to the cylindrical rigid...  
WO/2016/204045A1
Provided is an earphone (1) which is provided with, a first vibrating plate (31) which is caused to vibrate by means of a first piezoelectric element (32), and a cylindrically shaped casing (2) which transmits the vibrations of the first...  
WO/2016/197536A1
Disclosed is a piezoelectric loudspeaker. The piezoelectric loudspeaker comprises: a conductive terminal, a framework, a vibrating diaphragm fixed by the framework and a piezoelectric sheet fixed to the vibrating diaphragm. Moreover, the...  
WO/2016/199875A1
The present invention provides a speaker that excels in frequency response in a high sound range and that can be produced stably, and an earphone in which the speaker is used. Provided are: a speaker 1 provided with a woofer 2 supported ...  
WO/2016/194857A1
A speaker comprising a metal plate and a piezoelectric element bonded together is provided which has a low distortion factor of outputted sound. This speaker is characterized in that, defining the longitudinal elastic modulus E of the me...  
WO/2016/194683A1
Provided is a speaker (1) which supports an n-bit digital signal and is provided with an acoustic pressure generating unit (10) in which 2i-1 piezoelectric elements relating to an i-th bit, a total of (2n-1) piezoelectric elements (51, 5...  
WO/2016/194425A1
[Problem] To provide a piezoelectric sounder capable of improving sound pressure without decreasing resonance frequency and an electroacoustic conversion device provided therewith. [Solution] A piezoelectric sounder 30 according to an em...  
WO/2016/194858A1
A speaker which drives a dynamic speaker and a piezoelectric speaker with one amplifier is provided which has an excellent frequency characteristic. This speaker 3 is provided with a dynamic speaker 2, a piezoelectric speaker 3, and one ...  
WO/2016/189812A1
The disclosed ultrasonic device is equipped with a cylindrical, floor-equipped case, a piezoelectric element, a lead wire, and a filler material. The piezoelectric element is provided on the inner floor surface of the case. The lead wire...  
WO/2016/190101A1
The ultrasonic probe according to the present invention is provided with an acoustic matching layer that adjusts the acoustic impedance of sound waves and forms a tube wherein both edges of a sheet member are bonded to one another with a...  
WO/2016/189858A1
This ultrasonic device is equipped with a cylindrical, floor-equipped case, a piezoelectric element, a lead wire, and a filler material. The distance from a first thin wall section to a second thin wall section is an opening length B. Th...  
WO/2016/191256A1
A portable audio input/output device may include one or more openings that extend through a cover of the device and allow acoustic signals outside a housing of the device to reach a microphone disposed within the housing. The opening(s) ...  
WO/2016/186114A1
Provided is a digital speaker (1) equipped with one piezoelectric element (4) having n-number of electrodes (51, 52, 53) that are spaced apart. Sound pressure is adjusted according to the area of the electrodes (51, 52, 53), and all of t...  
WO/2016/184604A1
The present invention relates to an acoustic sensor (1) comprising an electroacoustic transducer and an electrical conductor (4). The electroacoustic transducer comprises a plate-shaped transducer element (2) which is configured to emit ...  
WO/2016/184061A1
Disclosed are a sound generating apparatus, an electronic device and a manufacturing method therefor.The sound generating apparatus comprises a sound generator, a piezoelectric buzzer and a front cover, wherein the front cover is attache...  
WO/2016/187478A1
Systems and techniques are provided for transducer array subdicing. A laminate material may include two laminate material flexures which each have a flexure boundary defined by a gap in the piece of laminate material. A trench may be loc...  
WO/2016/187481A1
Systems and techniques are provided for membrane bonding. A photoresist may be applied to an ultrasonic device. A portion of the photoresist may be removed. A bonding agent may be applied a portion of the photoresist that is not removed....  
WO/2016/182678A1
The privacy-preserving energy-efficient speaker implementations described herein improve user privacy while a user is listening to audio and can reduce the energy necessary to output the audio. This can be done by using parametric speake...  
WO/2016/180820A1
The present invention relates to a sound converter arrangement (1) having a first MEMS sound converter (21) for generating and/or detecting soundwaves in the audible wavelength spectrum which comprises a first cavity (41) and an ASIC (11...  
WO/2016/181965A1
Provided are a high-production-rate electroacoustic conversion film web, electroacoustic conversion film, and method for manufacturing the same in which the work hours can be reduced and the cost lowered without damaging a thin-film elec...  
WO/2016/182035A1
The present invention provides a compact speaker unit having high sound quality. This speaker unit 1 is configured to include a vibration element 20 having at least one opening 20a, a vibration device 30 for coming into contact with the ...  
WO/2016/175327A1
Provided is an ultrasonic sensor which is installed on the rear surface of a bumper of an automobile (a surface facing the front surface of the body of the automobile) and is thus particularly useful for detecting the position of a perso...  
WO/2016/175050A1
The ultrasonic transducer according to the present invention is provided with: a plurality of piezoelectric elements for emitting an ultrasonic wave in response to the input of an electric signal, and converting an ultrasonic wave incide...  
WO/2016/174709A1
This ultrasonic transducer production method includes: a sequence determination step (S2) for determining the sequence of a plurality of piezoelectric elements in a laminate on the basis of the mechanical quality factor of each piezoelec...  
WO/2016/172866A1
A piezoelectric speaker and a method for forming the piezoelectric speaker are provided. The method includes: providing a piezoelectric actuator (100) which comprises a piezoelectric layer (111), a bottom electrode (122) and a top electr...  
WO/2016/170961A1
The ultrasonic transducer according to the present invention is provided with: a plurality of piezoelectric elements; a substrate for inputting/outputting electric signals to/from the piezoelectric elements; a plurality of signal input/o...  
WO/2016/169256A1
Disclosed is a speaker device, comprising a vibration system, a magnetic circuit system, and an auxiliary system fixedly accommodating the magnetic circuit system and the vibration system. The vibration system comprises a centering suppo...  
WO/2016/171003A1
An ultrasonic sensor (100) is provided with: a bottomed cylindrical case (60), which includes a bottom section (62) and a cylindrical section (61), and is formed of a conductive member; and a piezoelectric element (50) bonded to an inner...  
WO/2016/168620A1
Methods and systems of wide-angle ultrasound transducers that receive or transmit over a wide angular range are disclosed. In one embodiment, the transducer includes an aperture that includes multiple piezoelectric segments sequentially ...  
WO/2016/167003A1
Provided is an ultrasonic sensor whereby reverberant vibration can be suppressed by a simpler circuit configuration than in the prior art. The ultrasonic sensor (100) is provided with a flat plate-shaped piezoelectric body (50) that incl...  
WO/2016/165320A1
Disclosed is a piezoelectric speaker, comprising electrically-conductive terminals, a frame, a diaphragm fixed to the frame, and a piezoelectric sheet fixed to the diaphragm, also: an antenna circuit is provided on the surface of the pie...  
WO/2016/158762A1
A piezoelectric element (50) is formed by laminating a plurality of piezoelectric body layers and is provided with a laminate having a top surface (41), serving as a first principal surface, and a bottom surface (46), serving as a second...  
WO/2016/155321A1
Disclosed in the present invention is a composite structure of a piezoelectric receiver and an ultrasonic wave generator, comprising: a piezoelectric chip, an ultrasonic signal generator, an audio signal input circuit and a switching cir...  
WO/2016/158518A1
The present invention provides a nondirectional electroacoustic transducer with a small parts count, with which it is possible to reproduce with high sound quality and sufficient sound volume in a wide frequency band. An electroacoustic ...  
WO/2016/154397A1
A piezoelectric two-dimensional mode resonator suited for high frequency filtering applications, with the ability to simultaneously excite lateral and vertical acoustic waves.  

Matches 301 - 350 out of 20,340