Patents
Sitemap › H04 - Electric communication technique › H04R - Loudspeakers, microphones, gramophone pick-ups or like acoustic electromechanical transducers; Deaf-aid sets; Public address systems › H04R 1 - Details of transducers
Patents for H04R 1 - Details of transducers (42,173)
11/2005
11/03/2005WO2005104616A1 Electret capacitor microphone
11/03/2005WO2005104615A1 Ultrasonic sensor
11/03/2005WO2005104613A1 Loudspeaker and assembly of loudspeakers
11/03/2005WO2005104611A1 Handheld device loudspeaker system
11/03/2005WO2005104609A1 Sound device provided with a geometric and electronic radiation control
11/03/2005WO2005104608A1 A portable speaker device
11/03/2005WO2005104607A1 Bass reflex tube for loudspeakers
11/03/2005WO2005104606A1 Headphone with cord take-up device
11/03/2005WO2005104605A1 Headphone with cord reel
11/03/2005WO2005104604A1 Wiring method for preventing howling of earphone microphone
11/03/2005WO2005104603A1 Microphone assembly with preamplifier and manufacturing method thereof
11/03/2005WO2005103622A1 Audio information output device and audio information output method
11/03/2005WO2005102780A1 Audio devices for vehicles
11/03/2005WO2005084071A3 Speaker for inwall installation
11/03/2005US20050246167 Sound source search system
11/03/2005US20050245289 Earphone antenna and portable radio equipment provided with earphone antenna
11/03/2005US20050244027 Headphones
11/03/2005US20050244026 Flexible earpiece for a hearing aid
11/03/2005US20050244025 Portable audio reproduction system
11/03/2005US20050244020 Microphone and communication interface system
11/03/2005US20050244018 Method and device for matching the phases of microphone signals of a directional microphone of a hearing aid
11/03/2005US20050241932 Manufacturing apparatus and manufacturing method of semiconductor device
11/03/2005US20050241876 Loudspeaker mounting frame, loudspeaker and cabinet comprising a loudspeaker
11/03/2005DE202005005931U1 Automatic cable rewinder for earphone, has earphone cable attached and hung from spring that is arranged within housing, where spring is activated, so that earphone cable is retracted into housing
11/03/2005DE19635888B4 Mehrkanaliger Raumklang-Kleinkopfhörer Multi-channel surround sound small headphone
11/03/2005DE10353578B4 Lautsprechereinheit mit mehrteiligem Resonanzraum Speaker unit with multi-resonant cavity
11/02/2005EP1592281A2 A plane wave channel, a loudspeaker construction, a linear loudspeaker array and a method to generate a plane acoustic wavefront
11/02/2005EP1591995A1 Indoor communication system for a vehicular cabin
11/02/2005EP1506691B1 Loudspeaker
11/02/2005CN2738504Y Supra-aural radio earphone
11/02/2005CN1692677A Piezoelectric speaker, speaker system employing it, and electronic apparatus employing piezoelectric speaker
11/02/2005CN1692675A Portable accoustic apparatus
11/02/2005CN1691834A Plate sound box
11/02/2005CN1225933C Electromagentic converter
11/01/2005US6961440 Electro-acoustic system
11/01/2005US6961438 Loudspeaker system having wide-directional characteristics
11/01/2005US6961437 Capacitor microphone
11/01/2005US6961436 Noise-protecting arrangement for ear protector
11/01/2005US6961434 Submersible headphones
10/2005
10/27/2005WO2005101896A1 Speaker device
10/27/2005WO2005101895A1 Headphone device
10/27/2005WO2005101894A1 Speaker device
10/27/2005WO2005069681A8 A condenser microphone mountable on main pcb
10/27/2005WO2004095877A3 Fastener and nut with axially interrupted threads
10/27/2005US20050239305 Microphone connector
10/27/2005US20050238197 Super tweeter
10/27/2005US20050238196 Speaker system
10/27/2005US20050238195 Separated wires moving control device on earphone set
10/27/2005US20050238194 Ear associated machine-human interface
10/27/2005US20050238193 Rotary canister base
10/27/2005US20050238178 Air leak self-diagnosis for a communication device
10/27/2005US20050236769 Wire moving control device of earphone set
10/27/2005DE202005012373U1 Support frame for hanging of loudspeaker systems has center strut of steel C-section located between two outside struts and parallel to them and on upper side has longitudinal cut-out through which is guided T-shaped metal piece
10/27/2005DE19714160B4 Lautsprecheranordnung Speaker assembly
10/27/2005DE102005012711A1 Mehrfachkanal-Kopfhörer Multi-channel headphones
10/27/2005DE102004016282A1 Loudspeaker unit for bass and bass reflex has a protective device against foreign bodies and a casing fitted with a bass loudspeaker and a bass reflex tube
10/26/2005EP1589609A2 Earphone antenna and portable radio equipment provided with earphone antenna
10/26/2005EP1299988B1 Listening device
10/26/2005CN2737107Y 一种麦克风 One kind of microphone
10/26/2005CN2737106Y Soft-track tube for microphone
10/26/2005CN2737105Y A microphone with built-in battery
10/26/2005CN1689371A Delay network microphones with harmonic nesting
10/26/2005CN1225106C Earphone
10/25/2005US6957715 Garden speaker
10/20/2005WO2005099303A1 Speaker device
10/20/2005WO2005099302A1 A communications unit with arrangement for loud reproduction of sound
10/20/2005WO2005099301A1 Audio entertainment system, device, method, and computer program
10/20/2005WO2005099300A1 Speaker device
10/20/2005WO2005099299A1 Sound generator
10/20/2005WO2005099235A1 Closeable radio communications device providing an acoustic chamber
10/20/2005US20050235147 Universal microphone for secure radio communication
10/20/2005US20050233781 Speaker arrangement for communication terminal
10/20/2005US20050233778 Speakerphone with a cellular phone connection
10/20/2005US20050232457 Speaker-use diaphragm and speaker
10/20/2005US20050232456 Loudspeaker, systems, and components thereof
10/20/2005US20050232455 Rigging system for loudspeakers
10/20/2005US20050232451 Notebook having attachable speaker device
10/20/2005US20050232450 Speaker apparatus
10/20/2005US20050232449 Voice transmission apparatus with UWB
10/20/2005US20050232447 Microphone
10/20/2005US20050232444 Sound level adjusting apparatus
10/20/2005US20050232441 Method for optimal microphone array design under uniform acoustic coupling constraints
10/20/2005US20050232440 Stationary spectral power dependent audio enhancement system
10/20/2005US20050232436 Communication system using short range radio communication headset
10/20/2005US20050232434 Transducer for bioacoustic signals
10/20/2005US20050231587 Integrated desktop videoconferencing system
10/20/2005US20050231586 Conference link between a speakerphone and a video conference unit
10/20/2005US20050231068 Transmitting apparatus, sound sensor and autonomous traveling vehicle
10/20/2005DE20321033U1 Membrane driver for a loudspeaker, especially for automobile and aircraft sound systems, has a larger coil to take the magnet system within it and stabilize membrane vibration
10/20/2005DE202005012695U1 Loudspeaker housing design e.g. for Hi-Fi technology, has housing made of graphite bound by plastics material
10/20/2005DE202005007262U1 Conference speech point, has acoustic conductor provided in part of housing surface
10/19/2005EP1587342A2 Headphone with active noise reduction
10/19/2005EP1587294A1 A speakerphone with a standard land line connection having an additional cellular phone connector
10/19/2005EP1587285A1 Ear fixed type conversation device
10/19/2005EP1587276A2 Universal microphone for secure radio communication
10/19/2005EP1586219A1 Loudspeaker
10/19/2005EP1285432B1 A method and a device for generating low frequency sound and use of the device
10/19/2005CN2735698Y 一种扬声器 A speaker
10/19/2005CN2735696Y An earphone with split joint
10/19/2005CN2735695Y Novel earphone
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