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Matches 251 - 300 out of 16,525

Document Document Title
WO/2017/091509A1
A loudspeaker system composed of a flexible panel with an affixed array of force actuators, a signal processing system, and interface electronic circuits is described. The system described is capable of creating a pattern of standing ben...  
WO/2017/089560A1
The present invention relates to a composition in the form of sheet or layer comprising a layer of an aromatic polymer and a layer of metal adhering to at least one side of said polymeric sheet, and to its uses.  
WO/2017/089401A1
The invention relates to an electrodynamic sound transducer comprising a chassis (130), a membrane (110) with a hole (150) in the center of the membrane (110), a moving coil (120), a magnetic system (140) and a resonator (200) which is p...  
WO/2017/088712A1
A flat and moving-coil combined-type vibrating diaphragm assembly, comprising a vibrating diaphragm (5), a first wire coil (6) arranged in a circular shape on the vibrating diaphragm (5), the vibrating diaphragm (5) being fixed with a se...  
WO/2017/082560A1
The present invention provides an acoustic output apparatus comprising: a first acoustic output unit; a second acoustic output unit provided in contact with at least a part of the first acoustic output unit; and a case for accommodating ...  
WO/2017/080682A1
The invention relates to a coaxial two-way loudspeaker comprising: a basket (1) having a central opening; - a first surround (2, 11); - a first membrane (3) open on the inside, - a first magnet system (5, 6, 9); - a second magnet system ...  
WO/2017/077236A1
The invention relates to a multi-glazed window incorporating an active or passive noise reduction device, which device comprises at least one vibrating membrane (7) disposed between two adjacent glass panes (V1, V2) in such a way as to v...  
WO/2017/077176A1
An apparatus comprising a piezoelectric diaphragm positioned between opposing first and second electrodes, the piezoelectric diaphragm comprising a stack of graphene oxide layers between respective electrode-engaging layers of reduced gr...  
WO/2017/076413A1
Disclosed is a low-profile loudspeaker having an enclosure volume defined between a bottom and an outer wall with an outer periphery configured to suspend such membrane in the centre and excite the membrane at the periphery. Also disclos...  
WO/2017/078010A1
Provided is a method capable of efficiently manufacturing an acoustic magnesium diaphragm exhibiting excellent rustproof performance and having excellent acoustic characteristics. According to the present invention, a rustproof processin...  
WO/2017/072814A1
Provided is a speaker device with which it is possible to improve sound quality. A speaker device according to one embodiment of the present invention is provided with a vibration-generating device (1), a rod-shaped member (2), and a sou...  
WO/2017/070481A1
In at least one embodiment, a dual asymmetric compression driver is provided. The dual asymmetric compression driver includes a first driver assembly and a second driver assembly. The first driver assembly is positioned about a central a...  
WO/2017/068854A1
The present invention is provided with the following: a diaphragm (11); and a voice coil (12) that is attached to a position (70±5)% from the center of the diaphragm (11) with respect to the outer diameter thereof.  
WO/2017/055012A1
The invention relates to a MEMS circuit board module (1) for an electroacoustic transducer arrangement (2) for generating and/or detecting sound waves in the audible wavelength spectrum, comprising a circuit board (4) and a multilayer pi...  
WO/2017/054751A1
A method of thinning a multilayer laminate material is provided to obtain a membrane stiffening plate (14) having a thickness less than currently known in the art. The multilayer laminate material comprises a middle layer (20) and two ou...  
WO/2017/053716A1
Ultrasonic transducers that include membrane films and perforated baseplates. An ultrasonic transducer includes a baseplate having a conductive surface with a plurality of apertures, openings, or perforations formed thereon or therethrou...  
WO/2017/053104A1
Small-scale audio speakers of various shapes are installed in parent devices. Inner casings, and the surrounding vibration-damping zone often required between such casings and the surrounding parent-device walls, are omitted from the ass...  
WO/2017/045795A1
A loudspeaker including a chassis, a drive unit and a diaphragm. The drive unit has a stationary part secured to the chassis and a translatable part secured to the diaphragm. An outer edge of the diaphragm is suspended from the chassis b...  
WO/2017/046161A1
The present invention provides a display device (1; 101 ) comprising an imaging plane (2; 103) configured to controllably display an image, a backplane (3) located behind the imaging plane (2; 103), a number of sound actuators (4; 104, 1...  
WO/2017/047566A1
Provided is a sound generation device wherein noise can be reduced in accordance with a predetermined frequency band. An elastic member (8) is provided to obtain a sound pressure characteristic having a sub-peak at a predetermined freque...  
WO/2017/046874A1
Provided is a speaker diaphragm achieving excellent sound characteristics, a speaker device provided with such speaker diaphragm, or a mobile unit provided with such speaker device. The speaker diaphragm is provided with a fiber-intermin...  
WO/2017/046716A1
The invention relates to audio transducers, such as loudspeaker, microphones and the like, and includes improvements in or relating to: audio transducer diaphragm structures and assemblies, audio transducer mounting systems; audio transd...  
WO/2017/044625A1
A diaphragm and suspension for an electroacoustic transducer are formed by depositing a layer of compliant material on a first surface of a solid substrate and removing material from a second surface of the solid substrate. The removal l...  
WO/2017/044779A1
A diaphragm for a loudspeaker may include a continuous primary diaphragm having an upper surface and a lower surface, where the primary diaphragm comprises a ring-shaped, flat region having an inner diameter and an outer diameter. The di...  
WO/2017/038359A1
Provided is a sound generation control device with which it is possible to adjust a performer's sound volume without compromising the original tone quality of a drum during a drum performance. A sensor 13 is provided near the center of a...  
WO/2017/030238A1
The present invention relates to a speaker, and the purpose of the present invention is to minimize the height of the speaker. That is, the present invention relates to a speaker, which comprises: a plate-shaped vibration magnetism gener...  
WO/2017/030045A1
Provided are: an electroacoustic conversion film which is capable of reproduction with a sufficient sound volume and has high heat dissipation properties, while being suppressed in sound pressure change over time; a method for producing ...  
WO/2017/029768A1
Provided are: a vibration transmission structure (300) capable of achieving excellent vibration characteristics even in the cases where a piezoelectric element (1) is used; and a piezoelectric speaker (400). According to one embodiment o...  
WO/2017/031422A1
Systems and methods of driving plate loudspeakers with different parameters based on frequency region in a way similar to typical cone driver crossover networks are described. These systems and methods may be implemented using arrays of ...  
WO/2017/026600A1
The present invention relates to a linear acoustic transducer for transducing an electrical signal into an acoustic signal and, more specifically, to a linear acoustic transducer, which can efficiently deliver the vibration energy of a d...  
WO/2017/026397A1
This planar speaker is provided with: a diaphragm having a flat surface; an actuator, which supports the diaphragm, and vibrates the diaphragm in the board thickness direction, i.e., the direction substantially perpendicular to the flat ...  
WO/2017/021036A1
Speakers for locating in a vehicle exhaust system having a speaker surround that is formed from a rubber compounded using a polyacrylate polymer. Speakers having a speaker surround that is integral with a coating that covers or substanti...  
WO/2017/019463A1
A microphone device is comprises a first micro electro mechanical system (MEMS) device and a second MEMS device with difference size of pierce holes in the diaphragms. Signal outputs from the first and second MEMS devices are selectively...  
WO/2017/016060A1
The present invention relates to the technical field of speakers, and particularly discloses a dome of a vibration diaphragm, speaker and electronic equipment using the same, and manufacturing method thereof. The dome of the present inve...  
WO/2017/016151A1
Disclosed is a loudspeaker, comprising a casing (7) and a vibration system. The vibration system comprises a vibrating diaphragm (3) and a sound coil (4) fixed at a side of the vibrating diaphragm. A joint portion is arranged at an edge ...  
WO/2017/019434A1
Speaker driver devices (1101) including a diaphragm (1102) and one or more electrode (1103) are provided herein. The diaphragms (1102) and electrodes (1103) of the speaker driver devices may each include carbon nanotubes and/or graphene....  
WO/2017/014978A1
A device is provided that comprises a membrane that includes one or more layers of anelectrically resistive material. The device also comprises a film disposed along a surface of the membrane to form a coil. The film includes one or more...  
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/2016/208385A1
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/2016/202661A1
A MEMS microphone including a plurality of overtravel stops (OTS) connected to a perimeter of a membrane of the MEMS microphone. The OTS are released from a backplate layer during manufacturing and are configured to contact the backplate...  
WO/2016/200477A1
This disclosure relates to loudspeakers that use one or more stacks of electrically actuated cards that pump air through vents to produce sound waves in response to an acoustic signal. Each stack can include several electrostatic actuato...  
WO/2016/199009A1
An electrostatic loudspeaker, or a diaphragm for an electrostatic loudspeaker, where the diaphragm includes a plurality of conductive parts and, at least one insulator part separating between the conductive parts, and where each of the p...  
WO/2016/193691A1
A loudspeaker diaphragm (12) comprising a woven fibre body supports damping material (25), for example PVA polymer, on a rearward-facing surface (24). The woven fibre body may be formed of lengths (14) non-metallic fibre material (for ex...  
WO/2016/193868A1
A capacitive microphone including a rigid plate of a conductive material, a movable plate positioned in parallel to the rigid plate, electrically separated from the rigid plate, and held firmly with respect to the rigid plate in at least...  
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/2016/135517A3
A combined light and loudspeaker driver device (10) is suitable for mounting in, for example, a ceiling void. It comprises a housing (15) that supports a loudspeaker driver (20), a heat removal element (120), electronic components (25) a...  
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/2016/181577A1
These headphones have: one pair of housings that contain speaker units; ear-accommodating parts including frames that contact the head and surround the ears, and connecting sections that connect the frames and housings, cover the ears, a...  

Matches 251 - 300 out of 16,525