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7579753 Transducers with annular contacts  
An electronic device and transducer structures are described.
7536769 Method of fabricating an acoustic transducer  
An acoustic pressure type sensor is fabricated on a supporting substrate by depositing and etching a number of thin films on the supporting substrate and by machining the supporting substrate. The...
7412763 Method of making an acoustic assembly for a transducer  
A method of making an acoustic assembly for use in a transducer includes forming a multi-layer assembly. The multi-layer assembly includes a first layer member and a second layer member. Each...
7411649 Method for manufacturing a crystal device  
A method of manufacturing a crystal device includes applying substantially simultaneously a first light that is absorbed by a crystal plate and excites an energy level of a substance constituting...
7353585 Method of poling ferroelectric materials  
A method of producing an actuator includes shaping a block of ferroelectric material to provide an active element of the actuator. The element includes a stack of ferroelectric layers with adjacent...
7247976 Piezoelectric vibrator  
A piezoelectric vibrator having excellent shock resistance and high reliability is offered. The centers of first and second piezoelectric vibrating plates are supported by pillars on a main surface...
7227967 Piezoelectric transducer adapted to bridge of stringed instrument  
A piezoelectric transducer, adapted to a bridge of a stringed instrument such as a sound mute guitar, comprises a piezoelectric element roughly having an elongated rectangular shape, a pair of...
7221767 Surface mountable transducer system  
The present invention relates to a surface mountable acoustic transducer system, comprising one or more transducers, a processing circuit electrically connected to the one or more transducers, and...
7204009 Manufacturing method of acoustic sensor  
The present invention relates to a semiconductor electret condenser microphone capable of being reduced in size and including an acoustic sensor 100 and a case 200 for accommodating the...
7181181 Multi-band transceiver for a wireless communication system  
A local oscillation signal generator and a multi-band transceiver including the local oscillation signal generator are provided. The multi-band transceiver includes a fractional-N phased locked...
7130436 Helmet with built-in speaker system and speaker system for helmet  
A speaker system is installed in a helmet, and includes a pair of piezoelectric speakers, frames supporting the speakers around the peripheral edges thereof, and laminated films for protecting the...
7092539 MEMS based acoustic array  
Embodiments of the present invention described and shown in the specification and drawings include a combination responsive to an acoustic wave that can be utilized as a dynamic pressure sensor. In...
7043035 Miniature microphone  
A microphone for converting sound into an electrical signal includes a generally cylindrical housing including an inlet for receiving sound, an inner backplate, and an outer backplate. The inner...
7020295 Piezoelectric electroacoustic transducer and manufacturing method of the same  
A piezoelectric electroacoustic transducer includes a substantially rectangular piezoelectric diaphragm having electrodes and flexurally vibrating in response to application of an alternating...
7003125 Micromachined piezoelectric microspeaker and fabricating method thereof  
A micromachined piezoelectric microspeaker and its fabricating method are disclosed. The micromachined piezoelectric microspeaker comprises a diaphragm and a plurality of contact pads. The...
6965680 Piezoelectric electro-acoustic transducer  
A piezoelectric electro-acoustic transducer includes a piezoelectric vibration plate having a plurality of piezoelectric ceramic layers laminated to each other with an internal electrode being...
6928720 Method of manufacturing a surface acoustic wave device  
A surface acoustic wave device includes a piezoelectric substrate and at least one interdigital electrode disposed on the piezoelectric substrate. The interdigital electrode is made of α-tantalum.
6914993 Piezoelectric film loudspeaker  
A piezoelectric film loudspeaker comprising a diaphragm having a flexible piezoelectric film and electrodes formed on the both surfaces of the flexible piezoelectric film and a frame for supporting...
6912288 Piezoelectric electroacoustic transducer and manufacturing method of the same  
A piezoelectric electroacoustic transducer, including a plurality of piezoelectric layers deposited to define a deposited product, flexurally vibrates the deposited product by polarizing the entire...
6857501 Method of forming parylene-diaphragm piezoelectric acoustic transducers  
A micromachined acoustic transducer comprising a parylene diaphragm piezoelectric transducer. The parylene diaphragm has far lower stiffness than the silicon nitride. The method for fabricating the...
6791519 Sound and vision system  
A sound and vision system includes a display device ( 1 ) and an acoustic transducer, such as a loudspeaker or a microphone. The display device includes display cells ( 9 ) having opposite...
6760455 Electrostatic loudspeaker with a distributed filter  
An electrostatic loudspeaker includes a high resistivity stator with electrode conductivity per square that is constant and/or decreases with distance from the connection point. A contact area of...
6754358 Method and apparatus for bone sensing  
The invention discloses an improved bone conduction sensor capable of use within a voice sound transmitting apparatus. The bone conduction sensor is adapted for placement in the external auditory...
6693849 Piezoelectric audio transducer  
A piezoelectric audio transducer suitable for underwater use comprises a piezoelectric ceramic plate within a housing having open front face and back faces exposing the front and back faces of the...
6678383 Capacitor microphone  
A capacitor microphone includes a case having an end wall defining an opening for a sound hole, a capacitor portion comprising a diaphragm, a back plate and a spacer, the diaphragm opposing to the...
6658126 Hearing aid compatible piezoelectric speaker  
A piezoelectric speaker is provided which provides a magnetic field to couple the speaker to a hearing aid coil. The magnetic field induces a current in the hearing aid coil as it appears as a time...
6571445 Method for making acoustic transducer  
The present invention provides an transducer and a method of making the same. The transducer is comprised of a plurality of transducer cells, and conductive interconnects between the cells. Each...
6549631 Pressure transducing assembly  
A pressure tranducing assembly for converting received pressure into a digital pressure signal. A pressure transmitter adapted to receive a first mechanical pressure from an environment and to...
6522759 Speaker  
A reduced-size speaker for generating sound waves in wide low frequency audio region includes a cylindrical main body which is open at the top and bottom surfaces, a top lid being provided on the...
6522762 Silicon-based sensor system  
The present invention relates solid state silicon-based condenser microphone systems suitable for batch production. The combination of the different elements forming the microphone system is more...
6438242 Acoustic transducer panel  
An electro-acoustic transducer in which a plurality of cymbal-type electro-acoustic actuators are disposed in mechanical and electrical parallel between a pair of stiff plates. The resultant...
6389140 Ceramic piezoelectric type microphone  
A ceramic piezoelectric type microphone includes a lower cover and an upper cover, and a receiving space confined by the lower and upper covers when they are connected. A signal wire is led in the...
6307942 Panel-form microphones  
A panel-form microphone characterised by a distributed mode acoustic member (12) and a transducer (63) coupled wholly and exclusively to the member to produce a signal in response to resonance of...
6295365 Acoustic sensor and electric stethoscope device incorporating the same therein  
An acoustic sensor includes the following: a piezoelectric element constituted of a piezoelectric substance on which at least one electrode is provided, and a diaphragm on which the piezoelectric...
6275594 Piezoelectric acoustic device  
A piezoelectric acoustic device capable of permitting an increase in area or space of an operation face section of an electronic equipment required for arranging parts for the electronic equipment,...
6272228 Method for making a sound transducer integrated into an acoustic signal generating card  
The invention relates to a sound transducer in fluoride polyvinylidene (FPVD), its process of manufacture and integration into a card producing acoustic signals transmittable by telephone route....
6201874 Electrostatic transducer with nonplanar configured diaphragm  
An electrostatic transducer having respective first and second stators, each having an interior surface, which are displaced and juxtaposed, and including a flexible diaphragm leaving a conductive...
6178249 Attachment of a micromechanical microphone  
The invention relates to a method for attaching a micromechanical microphone (1) to be used in connection with a mobile station to a substrate (2), in which a diaphragm (4) and back electrode (6)...
6159166 Sensor and method for sensing arterial pulse pressure  
A method and a pulse pressure sensor for sensing an arterial pulse pressure waveform. In one embodiment, the pulse pressure sensor includes a housing, a diaphragm, a piezoelectric device, and a...
6122387 Piezoelectric loudspeaker  
A piezoelectric loudspeaker has a membrane and at least two flexural piezoresonators, one end of which is fixed, while the other end acts mechanically upon the membrane. The membrane is a flat...
6111967 Multi-segmented high deformation piezoelectric array  
A multi-segmented flextensional transducer includes a plurality of electroplated electroactive members which deform in concert when energized by an electrical field. Each electroactive member has a...
6108429 Speaker adapted for use as a center woofer in 3-dimensional sound system  
A speaker has a substantially reduced overall size while producing a complete low frequency sound range at high output amplitude. The speaker includes a main body having open sections at both ends...
5949892 Method of and apparatus for dynamically controlling operating characteristics of a microphone  
A microphone has a diaphragm which vibrates in response to sound waves and a proximately positioned charge carrying circuit for dynamically controlling a compliance of the diaphragm. A...
5889871 Surface-laminated piezoelectric-film sound transducer  
A sound transducer, which may be a microphone or a speaker, is constructed using a metallic film sandwich of piezoelectric film as the active element. The sandwich is laminated to a flat inflexible...
5805726 Piezoelectric full-range loudspeaker  
A thin, high-fidelity piezoelectric loudspeaker is disclosed which comprises: (a) first and second metal discs that are spaced apart; (b) at least one damping disc sandwiched between the first and...
5802195 High displacement solid state ferroelectric loudspeaker  
A piezoelectric loudspeaker suitable for midrange frequencies uses a dome shaped piezoelectric actuator to drive a speaker membrane directly. The dome shaped actuator is made from a reduced and...
5784340 Piezoelectric acoustic device  
A piezoelectric acoustic device comprises a piezoelectric element composed of a metallic plate-shaped diaphragm, a plate-shaped piezoelectric body, electrodes provided on both main surfaces of the...
5781646 Multi-segmented high deformation piezoelectric array  
A multi-segmented flextensional transducer includes a plurality of electroplated electroactive members which deform in concert when energized by an electrical field. Each electroactive member has a...
5778079 Skin touch-controlled piezoelectric microphone  
A skin touch-controlled piezoelectric microphone which includes a housing having a thin bottom side that admits vibrating waves from the user's skin when the user talks, a metal base plate mounted...
5751827 Piezoelectric speaker  
A piezoelectric speaker includes a casing and cover member having a transverse wall extending therebetween which forms a sound transmission channel having a spiral curved or double reverse bend...
Matches 1 - 50 out of 214 1 2 3 4 5 >