Login| Sign Up| Help| Contact|

Patent Searching and Data


Matches 1 - 50 out of 1,978

Document Document Title
WO/2018/060705A1
A heterodyning arrangement is disclosed that comprises a conductive material element, for example in the form of a graphene material element, at least a first input terminal (12) whereby electrical signals related to a first input electr...  
WO/2018/050304A1
A speaker (10) comprises an enclosure (8) defining an internal volume (11); and at least one sound generator (7), the sound generator (7) comprising one or more surfaces defining an air-path conduit (15) through which air operably passes...  
WO/2018/041789A1
The invention relates to a method for the spatial tomography of sound comprising the steps: contactless acquisition of a physical parameter for a first and a second plurality of local regions in space along a first and a second laser bea...  
WO/2018/026267A1
The present invention is in the field of a three dimensional thermoacoustic device composed of nanoporous material and the method to fabricate such a device, as well specific uses of said device, which device may have an improved sound p...  
WO/2018/014431A1
An hybrid Bluetooth earphone comprises an ear case (1), a Bluetooth receiver (2) and a frequency divider (3). A first acoustic chamber (11) and a second acoustic chamber (12) which are independent from each other are arranged in the ear ...  
WO/2017/213415A1
The present invention provides a sound output apparatus comprising: a first sound output unit; a second sound output unit provided so as to be spaced at a predetermined distance from the first sound output unit; at least one opening form...  
WO/2017/199809A1
Provided is an ultrasonic measuring device wherein the position of an optical detection unit with respect to a vibrating film is not needed to be set with a high positional accuracy in plan view of a substrate. An ultrasonic transducer d...  
WO/2017/158586A1
Laser-based system and optical microphone having increased bandwidth. The system includes a laser microphone to transmit a laser beam towards a human speaker; to receive an optical feedback signal reflected back from the human speaker; a...  
WO/2017/146323A1
A hybrid type dynamic speaker is disclosed. According to the present invention, two or more nozzle holes are formed in a mounting portion of a frame provided with a full-range generating speaker, and each nozzle hole is equipped with bal...  
WO/2017/142842A1
Recording, manipulating, distributing and creating sound pressure waves in one or more media by employing an apparatus that transfers the energy between photons and particles of the media is disclosed. An exemplary apparatus comprises on...  
WO/2017/130021A1
This invention presents a multi-channel remote audio monitoring device based on a heterodyne interferometric laser Doppler vibrometer. Device transmits two invisible laser beams to a reflecting surface being vibrated by sound sources in ...  
WO/2017/115339A1
The present disclosure relates to the field of acoustics, sound reproduction technologies, and the design principle of the loudspeaker, and more particularly, to an electroacoustic transducer having controlled ion generation. The electro...  
WO/2017/116023A1
Disclosed is a noise shielding earset having an acoustic filter. The noise shielding earset having an acoustic filter according to the present invention comprises: a driver unit for generating sound; and an acoustic filter for covering a...  
WO/2017/111376A1
Provided in the present invention are a complex device and an electronic device comprising same, the complex device comprising: a frame provided with a specific space therein; a vibrating member, provided inside the frame, for generating...  
WO/2017/102172A1
Microphone systems and methods of determining absolute sensitivities of a MEMS microphone (100). The microphone system includes a speaker (155), the MEMS microphone (100), and a controller (205). The speaker (155) is configured to genera...  
WO/2017/096406A1
Devices and methods for photoacoustic tomography are disclosed herein. One exemplary photoacoustic tomography device uses a laser to produce acoustic waves in a sample. A transducer receives the acoustic waves through a slit formed by on...  
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/2017/082665A1
An earphone according to the present invention comprises: a rear housing into which an earphone cable is inserted at one side thereof, and having an opening portion formed on the other side thereof; a front housing having one side couple...  
WO/2017/017591A1
Laser microphone, laser-based microphone, and optical microphone utilizing mirrors having different properties. A laser microphone includes at least two mirrors: a front-side mirror, and a rear-side mirror. The reflectivity of the front-...  
WO/2017/017569A1
Devices, systems, and methods of enhanced automatic speech recognition. An acoustic microphone senses or captures acoustic signals that are uttered by a human speaker. An optical microphone or laser microphone transmits a laser beam aime...  
WO/2017/017593A1
A system includes a laser microphone or laser-based microphone or optical microphone. The laser microphone includes a laser transmitter to transmit an outgoing laser beam towards a human speaker. The laser transmitter acts also as a self...  
WO/2017/005978A1
Apparatus comprising: an audio capture application configured to determine separate microphones from a plurality of microphones and identify a sound source direction of at least one audio source within an audio scene by analysing respect...  
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/2016/194425A1
[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/2016/184093A1
An electroacoustic conversion apparatus, comprising: a vibration system and a magnetic circuit system having a magnetic gap. The vibration system comprises: a vibration diaphragm (3), a voice coil (4) combined below the vibration diaphra...  
WO/2016/184080A1
An electro-acoustic transducing device, comprising: a vibration system and a magnetic circuit system with magnetic gaps. The vibration system comprises: a vibrating diaphragm (4), a voice coil (5) joined under the vibrating diaphragm (4)...  
WO/2016/162701A1
An optical microphone arrangement comprises: an array of optical microphones (4) on a substrate (8), each of said optical microphones (4) providing a signal indicative of displacement of a respective membrane (24) as a result of an incom...  
WO/2016/153851A1
An acoustic device includes a substrate that has a port. The acoustic device further includes a microelectromechanical system (MEMS) that converts sound energy into electrical energy. The MEMS is attached to the substrate over the port. ...  
WO/2016/153871A1
A Microelectromechanical System (MEMS) microphone includes a base printed circuit board (PCB), the base PCB having customer pads; at least one wall coupled to the base; a lid PCB coupled to the at least wall, the lid having a port extend...  
WO/2016/137200A1
The present invention provides a sound output device comprising a housing having a receiving space arranged therein, a first sound output unit arranged in the housing, and a second sound output unit arranged and spaced apart from the fir...  
WO/2016/129202A1
A piezoelectric speaker (100, 200, and so on to 500) includes a piezoelectric element (1), and a vibrating metal section (2, 22, and so on to 352) to which the piezoelectric element (1) is bonded with an adhesive section (3) therebetween...  
WO/2016/117665A1
[Problem] To reduce the thickness and size and obtain favorable output of a high-frequency band in a universal speaker provided with a vibration plate that forms a curved surface part that is curved. [Solution] This universal speaker 10 ...  
WO/2016/111583A1
The present invention relates to a microphone, which accurately measures the strength and the direction of a voice by precisely sensing the vibration of a vibration plate, enables a self-inspection on whether the microphone is operating ...  
WO/2016/107433A1
Disclosed are a channel state selection method and device based on ternary coding. The method comprises: performing modulation processing on a sound source signal to generate (2L+1) level quantization signals x; performing mapping transf...  
WO/2016/104993A1
A speaker according to the present invention comprises: a yoke having a receiving space formed therein; a magnet disposed in the receiving space and having a plate on the upper surface thereof; a voice coil disposed between the yoke and ...  
WO/2016/088459A1
The objective of the present invention is to maintain a satisfactory sound output condition over a wide band, in the context of reducing drive losses with respect to a vibrating plate. A speaker device is provided with: an annular coil b...  
WO/2016/066939A1
A device (10) for converting sound waves into electricity comprising first and second electrodes (12, 14) connected to a voltage or current source (32) and intended to be connected to a load (34), the first and second electrodes together...  
WO/2016/063462A1
Provided is an earphone comprising: a housing; a dynamic-type driver unit located in the housing; and a sound guide tube the length of which is approximately 10 mm or more and which transmits sounds outputted from the dynamic-type driver...  
WO/2016/024487A1
This disclosure pertains to an information-processing device, an information processing method, and a program that make it possible to acquire relative sound levels for a plurality of sound sources. The information-processing device that...  
WO/2016/007272A1
A micro-electro-mechanical system (MEMS) optical sensor and method of manufacturing a MEMS optical sensor. The MEMS optical sensor may be a MEMS optical microphone including a compliant membrane configured to vibrate in response to an ac...  
WO/2016/007273A1
A micro-electro-mechanical system (MEMS) optical sensor including an enclosure having a top wall, a bottom wall and a sidewall connecting the top wall and the bottom wall. The sensor further including a compliant membrane positioned with...  
WO/2015/146446A1
[Problem] To provide a universal speaker that efficiently transmits kinetic energy that has been converted from electrical energy of an audio signal to one or more diaphragms, and enables both healthy individuals and the hard of hearing ...  
WO/2015/139643A1
A magnetoresistive audio collector, comprising an audio collection circuit; the audio collection circuit comprises at least one linear magnetoresistive sensor, a coupling capacitor, an alternating current amplifier, an amplifier and a si...  
WO/2015/129969A1
An acoustic metamaterial, which amplifies acoustic waves, comprises a plate having formed therein a plurality of acoustic waveguides in a fixed pattern such that the acoustic waveguides pass through one side and the other side, wherein t...  
WO/2015/111581A1
According to an embodiment of the present invention, provided is a sensor which includes a structural body, a container, a liquid, and a detection unit. The structural body includes a support part and a membrane part. The membrane part i...  
WO/2015/111603A1
Provided is an ultrasound generation element which is capable of being employed for an even broader range of uses. This ultrasound generation element (10) is characterized by being provided with an internal medium (18) which, as a result...  
WO/2015/054650A1
An ultrasonic audio speaker includes an emitter and a driver. The emitter can include a first layer having a conductive surface; a second layer having a conductive surface; and an insulating layer disposed between the first and second co...  
WO/2015/048165A1
An apparatus and method for optimizing a parametric emitter system having a pot core inductive device coupled between an amplifier and emitter. The pot core inductive device allows for adjustments of the air gap formed between the two ha...  
WO/2015/030569A1
An all fibre based optical microphone with dual wavelength fibre laser and fibre laser dynamics operating principles is fabricated according to the present invention to settle the difficulty of sound sensing using optical fibre without a...  

Matches 1 - 50 out of 1,978