СПИСОК патентов США - подгруппа МПК16 H04R1/22


Выделить слова в названиях патентов:


№ п/п Номер патента Название патента

2017

19602930Dual diaphragm microphone
29602915Magnetically controllable transducer backing component
39596547MEMS microphone with spring suspended backplate
49591408Adjustable ventilation openings in MEMS structures
59584926Implantable microphone
69584903MEMS device and process
79579745Systems and methods for enhancing performance of a microphone
89576567Ergonomic tubular anechoic chambers for use with a communication device and related methods
99544705Sound system and method for capturing and reproducing sounds originating from a plurality of sound sources

2016

109532143Low frequency equalization for loudspeaker system
119525932Acoustic device having active drivers mounted to a passive radiator diaphragm
129525765Ergonomic anechoic anti-noise canceling chamber for use with a communication device and related methods
139516406Portable device with enhanced bass response
149510117Device for measuring sound level
159503806Loudspeaker system audio recovery imaging amplifier
169495953Dynamic engine harmonic enhancement sound stage
179486823Off-ear detector for personal listening device with active noise control
189473857Hearing aid with increased acoustic bandwidth
199473855Moving armature receiver assemblies with vibration suppression
209462372Unidirectional condenser microphone unit
219451348Electronic device housing
229449596Sound generation system, sound recording system, sound generation method, sound recording method, sound adjusting method, sound adjusting program, sound field adjusting system, speaker stand, furniture, speaker cabinet, and speaker device
239438989Headphone structure for adjusting audio frequencies
249432761Signal processor
259420367Passive acoustical filters with filled expansion chamber
269420365Silicon condenser microphone
279407993Latency reduction in transposer-based virtual bass systems
289407983Microphone device
299402136Sound generator and electronic apparatus using the same
309392357Method and apparatus for enhanced stimulation of the limbic auditory response
319386366Active design of exhaust sounds
329382109MEMS microphone with reduced parasitic capacitance
339357289Three-dimensional air-adsorbing structure
349333911Engine sound management
359324315Loudspeaker diaphragm and loudspeaker using same
369301042Electro-acoustic transducer
379282398Speaker system having wide bandwidth and wide high-frequency dispersion
389271067Transducer apparatus having a mechanical acoustic filter with movable blocking member
399258634Microphone system with offset apertures
409253299Ergonomic tubular anechoic chambers for use with a communication device and related methods
419247348Speaker having a horizontal former
429247338Electroacoustic transducer
439232300Bass reflex port and tubular body
449232299Three-dimensional air-adsorbing structure

2015

459226078Acoustic transducers
469219953Earphone microphone
479204222Transducer apparatus with a tension actuator
489191735Microphone features relating to a portable computing device
499185492Systems and methods for acousto-haptic speakers
509136814Method and system of equalization pre-preocessing for sound receivng system
519131304Loudspeaker and equipment including the same
529131301Speaker enclosure and method for fabricating the same
539119001Electronic device having loudspeaker module
549107008Microphone with adjustable characteristics
559100752Acoustic transducers with bend limiting member
569100750Loudspeaker
579094743Acoustic transducers
589088853Receiver system for a hearing instrument
599087506Passive acoustical filters incorporating inserts that reduce the speed of sound
609078068Microphone with aligned apertures
618991549Three-dimensional air-adsorbing structure
628985268Speaker enclosure frame

2014

638913738Apparatus with wideband earpiece response
648887862Phase plug device
658794373Three-dimensional air-adsorbing structure

2013

668462977Loudspeaker with magnetic elements fixedly provided on diaphragm
678452038Multi-throat acoustic horn for acoustic filtering
688428296Bobbin and loudspeaker using the same
698422725Bobbin and loudspeaker using the same
708422723Loudspeaker and electronic device including loudspeaker
718411895Bobbin and loudspeaker using the same
728397861Diaphragm surround

2012

738311258Headset
748295537Loudspeaker moment and torque balancing

2011

758002079Diaphragm for speaker, speaker using the diaphragm for speaker, and process for producing the diaphragm for speaker
767938223Sintered elements and associated systems

2010

777845462Wide frequency range horn with modular method for reducing diffraction effects

2009

787631724Sound-wave path-length correcting structure for speaker system
797578368Speaker set for electronic product
807578367Speaker set and electronic product incorporating the same
817556121Speaker set and mobile phone incorporating the same
827520368Horizontally folded reflex-ported bass horn enclosure
837513332Convertible folded horn enclosure with improved compactness
847510047Speaker edge and resonator panel assembly
857508953Loudspeaker and components for use in construction thereof
867503422Expandable speaker enclosure

2006

877011178Sound transmitter and speaker

2005

886963651Single magnetic circuit dual output speaker
896963650Coaxial speaker with step-down ledge to eliminate sound wave distortions and time delay
906952874Two-stage phasing plug system in a compression driver
916950529System consisting of a microphone and an amplifier
926940990Multi-channel audio center speaker device
936914992System consisting of a microphone and a preamplifier
946912292Concentric co-planar multiband electro-acoustic converter
956904154Acoustic device
966876752Loudspeakers systems and components thereof

2004

976813364Electric/acoustic transducer module, in-ear hearing aid and method for manufacturing an in-ear hearing aid
986810127Clear sound side fill center fill
996804370Speaker capable to playback in wide frequency range
1006801635Speaker device
1016801631Speaker system with multiple transducers positioned in a plane for optimum acoustic radiation pattern
1026798891Speaker system
1036792122Acoustic device
1046788798Method and arrangement for improving leak tolerance of an earpiece
1056771784Sub woofer system
1066766027Elliptical flushmount speaker
1076751333Inertial vibration transducers
1086745867Loudspeaker drive unit
1096744899Direct coupling of waveguide to compression driver having matching slot shaped throats
1106741717Device for reducing structural-acoustic coupling between the diaphragm vibration field and the enclosure acoustic modes
1116738483Overhead loudspeaker systems
1126731765Loudspeaker device
1136728386Electro-acoustic communications unit
1146712177Cross-fired multiple horn loudspeaker system
1156707920Implantable hearing aid microphone
1166704427Acoustic transducer with improved acoustic damper
1176694038Acoustic device
1186682043Shock-absorbing device for a microphone stand

2003

1196668969Manifold for a horn loudspeaker and method
1206668063Electrical apparatus with electro-acoustic transducer
1216658110Electroacoustic communications unit
1226647124Loudspeaker with coaxial magnetic circuit for high-pitch sound and low-pitch sound
1236647122Loudspeaker drive unit
1246621910Method and arrangement for improving leak tolerance of an earpiece in a radio device
1256621909Horn loudspeaker and loudspeaker systems
1266618487Electro-dynamic exciter
1276606390Loudspeakers
1286603863Headphone apparatus for providing dynamic sound with vibrations and method therefor
1296580801Loudspeaker apparatus
1306580799Keyboard comprising a loudspeaker
1316574344Directional horn speaker system
1326566960High back-EMF high pressure subwoofer having small volume cabinet low frequency cutoff and pressure resistant surround
1336557664Loudspeaker
1346553124Acoustic device
1356549634Behind-the-ear hearing aid
1366546106Acoustic device
1376522760Active acoustic devices
1386519349Loudspeaker
1396516072Loudspeaker

2002

1406496586Thin Loudspeaker
1416493456Thin speaker assemblies including laterally offset resonator cavities and personal electronic devices including the same
1426493452Speaker unit
1436490361Apparatus having a housing which accommodates a sound transducer and which has a passage
1446473625Earpiece acoustics
1456466680High-frequency loudspeaker module for cinema screen
1466466675Loudspeaker system
1476442282Acoustic devices
14864382373D woofer drive circuit
1496418231High back EMF, high pressure subwoofer having small volume cabinet, low frequency cutoff and pressure resistant surround
1506404894Packaging
1516399870Musical instruments incorporating loudspeakers
1526394223Loudspeaker with differential energy distribution in vertical and horizontal planes
1536389935Acoustic display screen
1546373955Loudspeakers
1556363157Multiple element electroacoustic transducing
1566359991Greetings or the like card
1576356642Multi-speaker system
1586356640Direction adjusting arrangement for tweeter
1596351542Loudspeakers with panel-form acoustic radiating elements
1606351541Electrostatic transducer
1616343134Loudspeaker and horn with an additional transducer
1626343132Loudspeaker
1636337908Telephone handset, cordless telephone or mobile telephone for improving acoustic problems in a frequency range

2001

1646327369Loudspeakers comprising panel-form acoustic radiating elements
1656324294Passenger vehicles incorporating loudspeakers comprising panel-form acoustic radiating elements
1666324052Personal computing devices comprising a resonant panel loudspeaker
1676320967Passenger vehicles incorporating loudspeakers comprising panel-form acoustic radiating elements
1686307942Panel-form microphones
1696304661Loudspeakers comprising panel-form acoustic radiating elements
1706304222Radio communications handset antenna arrangements
1716285770Noticeboards incorporating loudspeakers
1726282298Acoustic device
1736282287Communication earpiece without impulse and high frequency noise
1746278787Loudspeakers
1756269168Speaker apparatus
1766266426Visual display means incorporating loudspeakers
1776263079Telephone with means for enhancing the low-frequency response
1786215881Ceiling tile loudspeaker
1796212284Sound reproduction device
1806201878Portable compact disc player
1816198831Panel-form loudspeakers
1826192136Inertial vibration transducers
1836188775Panel-form loudspeakers
1846181799Greetings or the like card
1856169809Visual display means incorporating loudspeakers

2000

1866151402Vibration transducers
1876144746Loudspeakers comprising panel-form acoustic radiating elements
1886134332Sound lens speaker system
1896130954High back-emf, high pressure subwoofer having small volume cabinet, low frequency cutoff and pressure resistant surround
1906118883System for controlling low frequency acoustical directivity patterns and minimizing directivity discontinuities during frequency transitions
1916116373Acoustic horns for loudspeakers
1926112847Loudspeaker with differentiated energy distribution in vertical and horizontal planes
1936101262Flush-mount pivoting speaker
1946081602Arrayable two-way loudspeaker system and method
1956064745Compression driver phase plug
1966058315Speaker assembly for a radiotelephone
1976055320Directional horn speaker system
1986038326Loudspeaker and horn with an additional transducer
1996031926Panel-form loudspeakers
2006031921Loudspeaker unit
2016031920Coaxial dual-parabolic sound lens speaker system
2026028947Lightweight molded waveguide device with support infrastructure

1999

2036003766Vending machine
2045991421Radially expanding multiple flat-surfaced waveguide device
2055970158Compact horn speaker
2065963640Radiotelephone having an acoustical wave guide coupled to a speaker
2075946403Directional microphone for computer visual display monitor and method for construction
2085946401Linear speaker array
2095937074High back emf, high pressure subwoofer having small volume cabinet, low frequency cutoff and pressure resistant surround
2105932850Speaker system
2115929392Speaker system
2125907133Device for electroacoostic diffusion, with diaphragms, spiders and horns of balsa wood or mixtures thereof
2135898788Loudspeaker system
2145898138Loudspeaker having horn loaded driver and vent
2155890072Radiotelephone having a non-resonant wave guide acoustically coupled to a microphone
2165883966Portable telephone with a speaker having an improved acoustic characteristic
2175878148Compression driver
2185874695Speaker assembly

1998

2195850460Bass speaker
2205832079Acoustic horn for use in cellular flip phones
2215815589Push-pull transmission line loudspeaker
2225802191Loudspeakers, systems, and components thereof
2235802190Linear speaker array
2245793000Speaker system
2255778084Loudspeaker with phase correction
2265742696Modular tweeter
2275740262Noise removing apparatus using a microphone
2285739480Speaker base for alternatively mounting different drivers
2295737435Sound-reproducing apparatus comprising an acoustic horn, and acoustic horn for use in the apparatus
2305729605Headset with user adjustable frequency response
2315714722Loudspeaker
2325714721Porting

1997

2335689573Frequency-dependent amplitude modification devices for acoustic sources
2345682436Multipoint driving loudspeaker having repulsion magnetic-type driving unit
2355647012Tri-chamber speaker box
2365635686Composite speaker system having a directional adjustable tweeter
2375629501Composite speaker system having a directional adjustable transducer
2385627901Directional microphone for computer visual display monitor and method for construction
2395604337Loudspeaker arrangement in television receiver cabinet
2405602930Loudspeaker

1996

2415568562Releasably mounted compound loudspeakers
2425548657Compound loudspeaker drive unit
2435526456Multiple-driver single horn loud speaker
2445517574Dual function transducer housing
2455512714Composite speaker system having a directional adjustable tweeter
2465501329Telephone handset cover

1995

2475461676Device for improving bass reproduction in loudspeaker system with closed housings
2485440645Computer speaker
2495432857Dual bandpass secondary source
2505430260Speaker system
2515418336Sound output device
2525398288Coaxial loudspeaker system
2535388162Sound innovation speaker system

1994

2545373565Spacer for coaxial loudspeakers
2555371428Piezoelectric transducer
2565367576Horn speaker
2575361378Camcorder stereo mic/phones
2585343535Loudspeaker device
2595343523Telephone headset structure for reducing ambient noise
2605339286Composite electroacoustic transducer
2615327504Device to improve the bass reproduction in loudspeaker systems using closed housings
2625325439Loudspeaker apparatus
2635324896Audio loudspeaker system
2645323466Tandem transducer magnet structure
2655303209Electroacoustic transducer having a partition wall and a mask wall
2665298690Sound distributor with symmetry of revolution
2675296656Sound collecting and concentrating device for attaching to the back of multiple loudspeakers
2685295194Multi-driver loudspeaker assembly
2695291559Computer speaker
2705289355Portable lighted microphone
2715285025Loudspeaker horn
2725284222Speaker cabinet
2735283836Planar speakers
2745282245Tubular bi-directional microphone with flared entries

1993

2755268538Hemispherically wide-radiating-angle loudspeaker system
2765261006Loudspeaker system comprising a helmholtz resonator coupled to an acoustic tube
2775260681Paging receiver with resonant box
2785258584Multiple auxiliary compound driver loudspeaker system
2795249237Audio transducer improvements
2805243662Electrodynamic sound generator for hearing aids
2815233136Horn loadspeaker
2825230021Audio transducer improvements
2835229555Speaker system and TV with the same
2845224474Retrofitting gas mask voice amplifier unit with easily actuated switch means
2855224473Retrofitting gas mask voice amplifier unit with easily actuated switch means
2865212732Effects speaker system
2875193119Multiple loudspeaker
2885187333Coiled exponential bass/midrange/high frequency horn loudspeaker
2895181253Loudspeaker assembly

1992

2905170435Waveguide electroacoustical transducing
2915168525Boundary-layer microphone
2925166982Horn speaker having a cooling device
2935164549Sonic wave generator
2945161200Microphone
2955153915Speaker filtering circuit and support therefor
2965148492Diaphragm of dynamic microphone
2975147986Subwoofer speaker system
2985136656Probe microphone
2995125732Motion picture exhibition facility
3005119431Efficiency loudspeaker
3015117462Phasing plug for compression driver
3025115883Loudspeaker
3035115882Omnidirectional dispersion system for multiway loudspeakers
3045111509Electric acoustic converter
3055109423Audio system with amplifier and signal device
3065105906Sound reproduction speaker with improved directional characteristics
3075103482Apparatus and method for reproducing high fidelity sound
3085099948Compact woofer speaker system
3095097514Equilateral tetrahedral speaker system
3105092424Electroacoustical transducing with at least three cascaded subchambers
3115082083Structure wall mounted speaker assembly
3125081683Loudspeakers

1991

3135073945Loudspeaker system
3145068901Dual outlet passage hearing aid transducer
3155067159Structure of a speaker apparatus
3165062139Coaxial loud speaker system
3175046581Loudspeaker system
3185025473Hemispherical speaker system
3195022488Transducer enclosure
3205020630Loudspeaker and horn therefor
3215018206Network mounting device for coaxial type speaker
3225004067Cinema sound system for unperforated screens
3234996713Electroacoustic piezoelectric transducer having a broad operating range
3244991687Speaker system having directivity
3254984278Adjustable mount for a loudspeaker
3264982436Dual horn folded soundpath loudspeaker
3274981194Electro-acoustic transducer

1990

3284979586Acoustically shielded motorcycle helmet speaker enclosure
3294977975Vented motorcycle helmet speaker enclosure
3304975966Reducing microphone puff noise
3314975965Loudspeaker design
3324965839Electro acoustic transducer and loudspeaker
3334965837Environmentally resistant loudspeaker
3344953223Speaker mounting system
3354944019Low sound region reproducing speaker system
3364940108Open line source speaker system
3374923031High output loudspeaker system
3384922541Acoustic horn audio reproducer
3394920564Moisture barrier assembly
3404916675Broadband omnidirectional electroacoustic transducer
3414897877Sub-woofer driver combination with dual voice coil arrangement
3424893695Speaker system
3434893343Dual diverging manifold loudspeaker system
3444890689Omnidirectional speaker system

1989

3454888804Sound reproduction system
3464885782Single and double symmetric loudspeaker driver configurations
3474884655Tower-type speaker cabinet with pivoted plural speaker subassembly
3484882760Sound reproduction system
3494882562Adaptor for coupling plural compression drivers to a common horn
3504881265Apex loudspeaker
3514876723Loudspeaker system
3524862508Method for large-scale multiple source sound reinforcement
3534860369Flat speaker unit
3544860368Acoustic transducers with improved frequency response
3554860367Low frequency loud speaker
3564860365Method of fractionating the sound restoration of modulated signals in parallel mounted transducers, and sets of corresponding transducers
3574850016Microphone
3584847908Loudspeaker having a two-part diaphragm for use as a car loudspeaker
3594837839Compact speaker assembly with improved low frequency response
3604837833Microphone with frequency pre-emphasis channel plate
3614836327Sound reinforcement enclosure employing cone loudspeaker with annular central loading member and coaxially mounted compression driver
3624829581Electrodynamic transducer comprising a two-part diaphragm
3634821331Coaxial speaker unit
3644815560Microphone with frequency pre-emphasis
3654811816Symmetric double phonic diaphragm volume-enhancing device
3664811406Compound speaker system
3674805729Speaker enclosure
3684805221Construction of sound converter in sound guide, especially for loudspeakers, for example speaker boxes
3694799264Speaker system

1988

3704790408Coiled exponential bass/midrange horn loudspeakers
3714790020Horn type loudspeakers
3724787472Audio speaker apparatus
3734783820Loudspeaker unit
3744777650Dual cavity pressure microphones
3754773091Telephone handset for use in noisy locations
3764763753Insert earphones for audiometry
3774756382Loudspeaker having enhanced response at bass frequencies
3784751419Piezoelectric oscillation assembly including several individual piezoelectric oscillation devices having a common oscillation plate member
3794742887Open-air type earphone
3804733749High output loudspeaker for low frequency reproduction
3814727586High fidelity speaker system and assembly
3824727583Telephone transducer with improved frequency response
3834720868Dynamic transducer device
3844718517Loudspeaker and acoustic transformer therefor

1987

3854706295Coaxial loudspeaker system
3864704729Single acoustic box with spatial effect for stereophonic musical reproduction systems
3874697334Method of producing electroacoustic converters, preferably microphones, and converters produced according to the method
3884696037Loudspeaker arrangement comprising one or more flat diaphragms
3894694499Directional microphone with acoustic washer
3904677679Insert earphones for audiometry
3914672675Multiple speaker loudspeaker with conductive bridge
3924668842Headphone
3934657107Loudspeaker cabinet
3944654554Piezoelectric vibrating elements and piezoelectric electroacoustic transducers
3954646873Microphone and acoustic equalizer therefor
3964646872Earphone
3974641054Piezoelectric electro-acoustic transducer
3984637489Electroacoustic transducer
3994635748Speaker cabinet having interactive speakers

1986

4004629833Electric hearing aid
4014624337Speaker enclosure
4024621708Tweeter bidirectional radiating
4034620605Suspension for electro-acoustical transducers
4044619342Multiple sound transducer system utilizing an acoustic filter to reduce distortion
4054607145Electroacoustic transducer with a piezoelectric diaphragm
4064598789Sound reproducing
4074593160Piezoelectric speaker
4084590333Multidriver loudspeaker
4094590332Phase coherent low frequency speaker
4104584702Noise cancelling telephone transmitter insertable in telephone handset receptacle
4114574906Outdoor speaker
4124572325Stereophonic baffle
4134572324Ear piece construction
4144565905Loudspeaker construction

1985

4154558762Loudspeaker
4164554414Multi-driver loudspeaker
4174552242Coaxial type composite loudspeaker
4184539983Respirator speech transmitter
4194533795Integrated electroacoustic transducer
4204528426Directional microphone assembly
4214525872Amplifier
4224525817Acoustic resistor in an electroacoustic transducer
4234525604Horn loudspeaker with convex diaphragm
4244514599Speaker for automotive vehicle audio system having a vehicle panel serving as sound-amplifying medium
4254511768Mounting arrangement for altering a microphone's frequency response
4264504703Electro-acoustic transducer
4274503554Stereophonic balance control system
4284503553Loudspeaker system
4294494032Transducer plate for electro-acoustic transducers
4304493389Speaker assembly
4314492827Horn speaker with reduced magnetic flux leakage
4324492826Loudspeaker

1984

4334485275Inverted horn loudspeaker
4344483414Sound dampening device for telephones
4354475014Acoustical transducer
4364468530Loudspeaker system
4374466505Sound reproducing combination
4384465905Loudspeaker assembly
4394451928Multi-speaker system for use in automobiles
4404450930Microphone with stepped response
4414450322Adjustable speaker system and method of adjustment
4424449236Anti-side tone transmitter
4434442323Microphone with vibration cancellation
4444441577Direction-variable speaker system
4454440259Loudspeaker system for producing coherent sound
4464437541Controlled dispersion speaker configuration
4474437540Loud-speaker
4484434329Microphone device built in a tape recorder
4494429762Horn loudspeakers of the sectorial diffusion type, and method for making said loudspeakers
4504429194Earphone
4514426556Electrodynamic loudspeaker
4524426553Vehicle loudspeaker arrangement with magnetic-field-sensitive device

1983

4534419545Electret transducer
4544418248Dual element headphone
4554418247Electrodynamic transducer
4564413198Piezoelectric transducer apparatus
4574410770Directional microphone
4584410063Loudspeaker system
4594403120Earphone
4604403112Phase shift low frequency loudspeaker system
4614401857Multiple speaker
4624391346Loud-speaker
4634389542Orthodynamic headphone
4644387787Loudspeaker having acoustic impedance frontal loading element
4654387275Speaker and speaker system
4664385211Reflex horn speaker with a waterproofing device
4674385210Electro-acoustic planar transducer
4684379951Electro-acoustic transducer means
4694379212Electro-acoustic transducer
4704379211Arcuately tensioned piezoelectric diaphragm microphone
4714377219Loudspeaker having apertured acoustic impedance frontal loading element
4724376232Electro-acoustic transducer
4734373119Adjustable transducer
4744369857Loudspeaker and horn combination
4754368401Transducer plate for piezo-electrical transducers

1982

4764365688Speaker cabinet
4774365114Automotive loudspeaker having variable speaker orientation and particular electrical connections
4784365113Speaker unit for automotive vehicles
4794363937Sound inlet for microphones
4804361736Pressure recording process and device
4814358642Electro-magnetic type electric acoustic transducer
4824357490High fidelity loudspeaker system for aurally simulating wide frequency range point source of sound
4834350847Subwoofer system using a passive radiator
4844349084Controlled ambience speaker system
4854349082Acoustical damping element and method of forming same
4864348552Direct/reflecting speaker system and triangular shaped enclosure
4874348549Loudspeaker system
4884345118Quartz tuning fork electro-acoustic transducer
4894337778Blood pressure measuring apparatus
4904336861Speaker system
4914331840Electret transducer with tapered acoustic chamber
4924330878Sound producing device for watches
4934328400Coaxial multi-way planar diaphragm type loudspeaker system
4944324313Exponential horn for use in horn-type loudspeakers
4954322578Method and devices for the omnidirectional radiation of sound waves
4964317009Coldproof reflex horn speaker
4974314620Loudspeaker with cone driven horn
4984313521Speaker housing
4994313032Folded horn loudspeaker system

1981

5004303142Combined acoustical transducer and grille
5014301889Speaker enclosure
5024295006Speaker system
5034292561Attenuating means for electroacoustic transducer
5044289929Loudspeaker and enclosure combination
5054288663Noise canceling transmitter
5064283606Coaxial loudspeaker system
5074281222Miniaturized unidirectional electret microphone
5084280586Speaker enclosure
5094278852Earphone construction
5104270023Cylindrical speaker mechanism
5114268719Loudspeaker arrangements
5124266092Loudspeaker system with broad image source
5134263484Microphone unit
5144256930Loudspeaker having improved magnetic assembly
5154256198Acoustic apparatus
5164252211Loudspeaker
5174249037Pyramid loudspeakers with twin cross-phased mid-range speakers

1980

5184239945Sealed headphone
5194227051Loud speaker and enclosure system
5204224469Stereo speaker system
5214221929Speaker system
5224220832Two-way speaker with transformer-coupled split coil
5234220831Intrusion sensing device
5244213515Speaker system
5254213008Loudspeaker enclosure for mid-wall location
5264211898Headphone with two resonant peaks for simulating loudspeaker reproduction
5274210223Low frequency folded exponential horn loudspeaker apparatus with bifurcated sound path
5284207963Loudspeaker system
5294206831Loudspeaker coupler
5304206830Vehicle speaker system provided with a passive radiator
5314204096Sonic transducer mounting
5324203165Acoustic filter
5334199657Planar sound reproducing speaker system
5344196790Acoustic transducer having multiple frequency resonance
5354190738Modular furniture structure
5364189627Electroacoustic transducer filter assembly
5374182931360 Degree speakers
5384182429Loud-speaker system
5394181193Sound projection system

1979

5404180710Adjustably positioned phasing plug
5414179585Variable ratio full range direct-reflected pyramid inclined loudspeaker
5424178473Two-way loudspeaker for vehicle
5434177872Speaker system
5444176253Current loaded pneumatically driven loudspeaker arrangements
5454169516Speaker system
5464167223Mechanically operable acoustic filter
5474160135Closed earphone construction
5484158753Headphone of circumaural design
5494158400Sound reproducing system
5504157741Phase plug
5514152555Artificial ear for telephonometric measurements
5524152552Horn speaker and method for producing low distortion sound
5534151378Electrostatic microphone with damping to improve omnidirectionality, flatten frequency response, reduce wind noise
5544150262Piezoelectric bone conductive in ear voice sounds transmitting and receiving apparatus
5554147899Broadband electromagnetic sound source with differently tuned diaphragms
5564146110Speaker apparatus
5574145571Loudspeaker enclosure with acoustically coupled loudspeaker damper
5584143738Loudspeaker driver unit
5594139734Pivoted loudspeaker enclosure with visual indicator of optimum listening position
5604138594Small dimension low frequency folded exponential horn loudspeaker with unitary sound path and loudspeaker system including same
5614134471Narrow angle cylindrical wave full range loudspeaker system

1978

5624130174Loudspeaker
5634128738Compact transmission line loudspeaker system
5644122315Compact, multiple-element speaker system
5654122302Two way dynamic and electrostatic speaker enclosure with side vent for greater high frequency dispersion
5664119799Critical alignment loudspeaker system
5674117275Non-directional electret microphone with an air passage to balance pressures on opposite sides of the diaphragm
5684116302Horn loudspeaker
5694109116Hearing aid receiver with plural transducers
5704100371Loudspeaker system with phase difference compensation
5714091891Horn speaker
5724090040Hearing aid with acoustical frequency response modification
5734086445Telephone handset transmitter with improved output response
5744082159Ceramic speaker enclosure
5754078155Telephone apparatus for use in a conference room
5764073365Speaker system
5774069401Acoustical frictional resistance construction and apparatus for manufacturing an acoustical resistance and an associated magnetic system

1977

5784064966Loudspeaker apparatus
5794063614Combination loudspeaker and sign holder
5804058688Headphone
5814054750Full range rotatable speaker housing with oppositely directed speakers
5824051919High fidelity speaker enclosure
5834050541Acoustical transformer for horn-type loudspeaker
5844048454Sonic transducer employing rigid radiating member
5854047060Acoustic transducer with elastomeric coupling
5864044855Loudspeaker device
5874037051Flat baffle speaker system having improved crossover
5884033431Acoustic crossover speaker enclosure
5894033430Speaker enclosure
5904031418Low frequency acoustical piezo-electric transducer
5914031337Loudspeaker
5924031318High fidelity loudspeaker system
5934030564Loud speaker with stable damping
5944028504Acoustic amplifier combined with transducer shock mount
5954027117Headphone
5964027116Headphone
5974027115Electroacoustic sound generator
5984016953Push-pull transducer system
5994012605Input/output transducer with damping arrangement
6004008374Loudspeaker systems
6014006371Electroacoustical transducer comprising piezoelectric element
6024006308Loudspeaker arrangement
6034002863Transducer and method of making same

1976

6043999020Transducer with variable frequency response
6053995124Noise cancelling microphone
6063987245Compensated speaker-microphone
6073984635Low range loudspeaker system
6083983333Loud speaker system
6093982607Loudspeaker cabinet having an integrally constructed horn
6103980829Wide angle cylindrical wave loudspeaker extending approximately from floor to ceiling height with a lens
6113947646Resilient microphone mounting
6123943304Headphone operating on the two-way system
6133935925Horn unit for a speaker
6143931867Wide range speaker system
6153930560Damping element
© 2017, ПАТ-Инфо, В.И. Карнышев
Дата формирования списка: 03.04.2017