USPC Patent Classifications

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Class 381 electrical audio signal processing systems and devices
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381/1381 electrical audio signal processing systems and devices/(1) binaural and stereophonic
381/2381 electrical audio signal processing systems and devices/(1) binaural and stereophonic (2) broadcast or multiplex stereo
381/3381 electrical audio signal processing systems and devices/(1) binaural and stereophonic (2) broadcast or multiplex stereo (3) fm final modulation
381/4381 electrical audio signal processing systems and devices/(1) binaural and stereophonic (2) broadcast or multiplex stereo (3) fm final modulation (4) am subcarrier
381/5381 electrical audio signal processing systems and devices/(1) binaural and stereophonic (2) broadcast or multiplex stereo (3) fm final modulation (4) am subcarrier (5) four discrete channels
381/6381 electrical audio signal processing systems and devices/(1) binaural and stereophonic (2) broadcast or multiplex stereo (3) fm final modulation (4) am subcarrier (5) four discrete channels (6) having transmitter
381/7381 electrical audio signal processing systems and devices/(1) binaural and stereophonic (2) broadcast or multiplex stereo (3) fm final modulation (4) am subcarrier (7) switch-type detector or modulator
381/8381 electrical audio signal processing systems and devices/(1) binaural and stereophonic (2) broadcast or multiplex stereo (3) fm final modulation (4) am subcarrier (7) switch-type detector or modulator (8) two diodes
381/9381 electrical audio signal processing systems and devices/(1) binaural and stereophonic (2) broadcast or multiplex stereo (3) fm final modulation (4) am subcarrier (7) switch-type detector or modulator (9) four or more diodes
381/10381 electrical audio signal processing systems and devices/(1) binaural and stereophonic (2) broadcast or multiplex stereo (3) fm final modulation (4) am subcarrier (10) channel separation control
381/11381 electrical audio signal processing systems and devices/(1) binaural and stereophonic (2) broadcast or multiplex stereo (3) fm final modulation (4) am subcarrier (11) automatic switchover between mono and stereo modes
381/12381 electrical audio signal processing systems and devices/(1) binaural and stereophonic (2) broadcast or multiplex stereo (3) fm final modulation (4) am subcarrier (12) stereo indicators (e.g., stereo presence)
381/13381 electrical audio signal processing systems and devices/(1) binaural and stereophonic (2) broadcast or multiplex stereo (3) fm final modulation (4) am subcarrier (13) antinoise
381/14381 electrical audio signal processing systems and devices/(1) binaural and stereophonic (2) broadcast or multiplex stereo (3) fm final modulation (4) am subcarrier (14) having transmitter
381/15381 electrical audio signal processing systems and devices/(1) binaural and stereophonic (2) broadcast or multiplex stereo (15) am or both am and angle final modulation
381/16381 electrical audio signal processing systems and devices/(1) binaural and stereophonic (2) broadcast or multiplex stereo (15) am or both am and angle final modulation (16) having transmitter
381/17381 electrical audio signal processing systems and devices/(1) binaural and stereophonic (17) pseudo stereophonic
381/18381 electrical audio signal processing systems and devices/(1) binaural and stereophonic (17) pseudo stereophonic (18) pseudo quadrasonic
381/19381 electrical audio signal processing systems and devices/(1) binaural and stereophonic (19) quadrasonic
381/20381 electrical audio signal processing systems and devices/(1) binaural and stereophonic (19) quadrasonic (20) matrix
381/21381 electrical audio signal processing systems and devices/(1) binaural and stereophonic (19) quadrasonic (20) matrix (21) 4-2-4
381/22381 electrical audio signal processing systems and devices/(1) binaural and stereophonic (19) quadrasonic (20) matrix (21) 4-2-4 (22) variable decoder
381/23381 electrical audio signal processing systems and devices/(1) binaural and stereophonic (19) quadrasonic (20) matrix (21) 4-2-4 (23) with encoder
381/23.1381 electrical audio signal processing systems and devices/(1) binaural and stereophonic (23.1) hearing aid
381/300381 electrical audio signal processing systems and devices/(1) binaural and stereophonic (300) stereo speaker arrangement
381/301381 electrical audio signal processing systems and devices/(1) binaural and stereophonic (300) stereo speaker arrangement (301) in furniture or clothing
381/302381 electrical audio signal processing systems and devices/(1) binaural and stereophonic (300) stereo speaker arrangement (302) in vehicle
381/303381 electrical audio signal processing systems and devices/(1) binaural and stereophonic (300) stereo speaker arrangement (303) optimization
381/304381 electrical audio signal processing systems and devices/(1) binaural and stereophonic (300) stereo speaker arrangement (303) optimization (304) enclosure orientation
381/305381 electrical audio signal processing systems and devices/(1) binaural and stereophonic (300) stereo speaker arrangement (303) optimization (305) enclosure adaptation
381/306381 electrical audio signal processing systems and devices/(1) binaural and stereophonic (300) stereo speaker arrangement (306) with image presentation means
381/307381 electrical audio signal processing systems and devices/(1) binaural and stereophonic (300) stereo speaker arrangement (307) surround (i.e., front plus rear or side)
381/308381 electrical audio signal processing systems and devices/(1) binaural and stereophonic (300) stereo speaker arrangement (308) in single baffle
381/309381 electrical audio signal processing systems and devices/(1) binaural and stereophonic (300) stereo speaker arrangement (309) stereo earphone
381/310381 electrical audio signal processing systems and devices/(1) binaural and stereophonic (300) stereo speaker arrangement (309) stereo earphone (310) virtual positioning
381/311381 electrical audio signal processing systems and devices/(1) binaural and stereophonic (300) stereo speaker arrangement (309) stereo earphone (311) wireless or for use in diverse
381/26381 electrical audio signal processing systems and devices/(1) binaural and stereophonic (26) stereo sound pickup device (microphone)
381/27381 electrical audio signal processing systems and devices/(1) binaural and stereophonic (27) center channel
381/28381 electrical audio signal processing systems and devices/(1) binaural and stereophonic (28) amplifier
381/54381 electrical audio signal processing systems and devices/(54) helium speech
381/55381 electrical audio signal processing systems and devices/(55) audio transducer protection circuitry
381/56381 electrical audio signal processing systems and devices/(56) monitoring of sound
381/57381 electrical audio signal processing systems and devices/(56) monitoring of sound (57) amplification control responsive to ambient sound
381/58381 electrical audio signal processing systems and devices/(58) monitoring/measuring of audio devices
381/59381 electrical audio signal processing systems and devices/(58) monitoring/measuring of audio devices (59) loudspeaker operation
381/60381 electrical audio signal processing systems and devices/(58) monitoring/measuring of audio devices (60) testing of hearing aids
381/61381 electrical audio signal processing systems and devices/(61) sound effects
381/62381 electrical audio signal processing systems and devices/(61) sound effects (62) tremelo or vibrato effects
381/63381 electrical audio signal processing systems and devices/(61) sound effects (63) reverberators
381/64381 electrical audio signal processing systems and devices/(61) sound effects (63) reverberators (64) mechanical (e.g., reverberation chamber)
381/65381 electrical audio signal processing systems and devices/(61) sound effects (63) reverberators (64) mechanical (e.g., reverberation chamber) (65) helical spring
381/66381 electrical audio signal processing systems and devices/(66) dereverberators
381/67381 electrical audio signal processing systems and devices/(67) stethoscopes, electrical
381/312381 electrical audio signal processing systems and devices/(312) hearing aids, electrical
381/313381 electrical audio signal processing systems and devices/(312) hearing aids, electrical (313) directional
381/314381 electrical audio signal processing systems and devices/(312) hearing aids, electrical (314) programming interface circuitry
381/315381 electrical audio signal processing systems and devices/(312) hearing aids, electrical (315) remote control, wireless, or alarm
381/316381 electrical audio signal processing systems and devices/(312) hearing aids, electrical (316) frequency transposition
381/317381 electrical audio signal processing systems and devices/(312) hearing aids, electrical (317) noise compensation circuit
381/318381 electrical audio signal processing systems and devices/(312) hearing aids, electrical (317) noise compensation circuit (318) feedback suppression
381/319381 electrical audio signal processing systems and devices/(312) hearing aids, electrical (319) with vacuum tube amplifier
381/320381 electrical audio signal processing systems and devices/(312) hearing aids, electrical (320) spectral control
381/321381 electrical audio signal processing systems and devices/(312) hearing aids, electrical (321) wideband gain control
381/322381 electrical audio signal processing systems and devices/(312) hearing aids, electrical (322) specified casing or housing
381/323381 electrical audio signal processing systems and devices/(312) hearing aids, electrical (322) specified casing or housing (323) power supply or programming interface terminals
381/324381 electrical audio signal processing systems and devices/(312) hearing aids, electrical (322) specified casing or housing (324) component mounting
381/325381 electrical audio signal processing systems and devices/(312) hearing aids, electrical (322) specified casing or housing (325) cerumen protection
381/326381 electrical audio signal processing systems and devices/(312) hearing aids, electrical (322) specified casing or housing (326) non-air-conducted sound delivery
381/327381 electrical audio signal processing systems and devices/(312) hearing aids, electrical (322) specified casing or housing (327) spectacle
381/328381 electrical audio signal processing systems and devices/(312) hearing aids, electrical (322) specified casing or housing (328) ear insert
381/329381 electrical audio signal processing systems and devices/(312) hearing aids, electrical (322) specified casing or housing (328) ear insert (329) device for manipulation
381/330381 electrical audio signal processing systems and devices/(312) hearing aids, electrical (322) specified casing or housing (330) hook over ear
381/331381 electrical audio signal processing systems and devices/(312) hearing aids, electrical (322) specified casing or housing (331) inductive pickup
381/70381 electrical audio signal processing systems and devices/(70) artificial larynx, electrical
381/71.1381 electrical audio signal processing systems and devices/(71.1) acoustical noise or sound cancellation
381/71.2381 electrical audio signal processing systems and devices/(71.1) acoustical noise or sound cancellation (71.2) acoustic, nonairborne vibration sensing or counterwave emission
381/71.3381 electrical audio signal processing systems and devices/(71.1) acoustical noise or sound cancellation (71.3) from appliance
381/71.4381 electrical audio signal processing systems and devices/(71.1) acoustical noise or sound cancellation (71.4) within cabin or compartment of vehicle
381/71.5381 electrical audio signal processing systems and devices/(71.1) acoustical noise or sound cancellation (71.5) within duct
381/71.6381 electrical audio signal processing systems and devices/(71.1) acoustical noise or sound cancellation (71.6) adjacent ear
381/71.7381 electrical audio signal processing systems and devices/(71.1) acoustical noise or sound cancellation (71.7) particular transducer or enclosure structure
381/71.8381 electrical audio signal processing systems and devices/(71.1) acoustical noise or sound cancellation (71.8) counterwave generation control path
381/71.9381 electrical audio signal processing systems and devices/(71.1) acoustical noise or sound cancellation (71.8) counterwave generation control path (71.9) nonacoustically derived reference signal
381/71.11381 electrical audio signal processing systems and devices/(71.1) acoustical noise or sound cancellation (71.8) counterwave generation control path (71.11) adaptive filter topology
381/71.12381 electrical audio signal processing systems and devices/(71.1) acoustical noise or sound cancellation (71.8) counterwave generation control path (71.12) algorithm or formula (e.g., lms, filtered-x, etc.)
381/71.13381 electrical audio signal processing systems and devices/(71.1) acoustical noise or sound cancellation (71.8) counterwave generation control path (71.13) analog or nonadaptive
381/71.14381 electrical audio signal processing systems and devices/(71.1) acoustical noise or sound cancellation (71.8) counterwave generation control path (71.14) tonal noise or particular frequency or band
381/72381 electrical audio signal processing systems and devices/(72) hearing protectors, electrical
381/73.1381 electrical audio signal processing systems and devices/(73.1) sound or noise masking
381/74381 electrical audio signal processing systems and devices/(74) headphone circuits
381/75381 electrical audio signal processing systems and devices/(75) megaphones
381/76381 electrical audio signal processing systems and devices/(76) lecterns
381/77381 electrical audio signal processing systems and devices/(77) one-way audio signal program distribution
381/78381 electrical audio signal processing systems and devices/(77) one-way audio signal program distribution (78) drive-in
381/79381 electrical audio signal processing systems and devices/(77) one-way audio signal program distribution (79) near field
381/80381 electrical audio signal processing systems and devices/(77) one-way audio signal program distribution (80) multiple channel
381/81381 electrical audio signal processing systems and devices/(77) one-way audio signal program distribution (80) multiple channel (81) with switching
381/82381 electrical audio signal processing systems and devices/(77) one-way audio signal program distribution (82) public address system
381/83381 electrical audio signal processing systems and devices/(77) one-way audio signal program distribution (82) public address system (83) feedback suppression
381/84381 electrical audio signal processing systems and devices/(77) one-way audio signal program distribution (82) public address system (84) spare amplifier substitution
381/85381 electrical audio signal processing systems and devices/(77) one-way audio signal program distribution (82) public address system (85) speaker or channel switching
381/86381 electrical audio signal processing systems and devices/(86) vehicle
381/87381 electrical audio signal processing systems and devices/(87) having non-electrical feature (e.g., mounting)
381/89381 electrical audio signal processing systems and devices/(87) having non-electrical feature (e.g., mounting) (89) loudspeakers driven in given phase relationship
381/332381 electrical audio signal processing systems and devices/(87) having non-electrical feature (e.g., mounting) (332) and loudspeaker
381/333381 electrical audio signal processing systems and devices/(87) having non-electrical feature (e.g., mounting) (332) and loudspeaker (333) with furniture, clothing, or image presentation means
381/334381 electrical audio signal processing systems and devices/(87) having non-electrical feature (e.g., mounting) (332) and loudspeaker (334) portable or for use in diverse environment
381/335381 electrical audio signal processing systems and devices/(87) having non-electrical feature (e.g., mounting) (332) and loudspeaker (335) plural diaphragms, compartments, or housings
381/336381 electrical audio signal processing systems and devices/(87) having non-electrical feature (e.g., mounting) (332) and loudspeaker (336) curved or angled housing
381/91381 electrical audio signal processing systems and devices/(87) having non-electrical feature (e.g., mounting) (91) having microphone
381/92381 electrical audio signal processing systems and devices/(92) directive circuits for microphones
381/93381 electrical audio signal processing systems and devices/(93) feedback suppression
381/94.1381 electrical audio signal processing systems and devices/(94.1) noise or distortion suppression
381/94.2381 electrical audio signal processing systems and devices/(94.1) noise or distortion suppression (94.2) spectral adjustment
381/94.3381 electrical audio signal processing systems and devices/(94.1) noise or distortion suppression (94.2) spectral adjustment (94.3) in multiple frequency bands
381/94.4381 electrical audio signal processing systems and devices/(94.1) noise or distortion suppression (94.4) interpolation
381/94.5381 electrical audio signal processing systems and devices/(94.1) noise or distortion suppression (94.5) soft switching, muting, or noise gating
381/94.6381 electrical audio signal processing systems and devices/(94.1) noise or distortion suppression (94.6) hum or ground loop
381/94.7381 electrical audio signal processing systems and devices/(94.1) noise or distortion suppression (94.7) using signal channel and noise channel
381/94.8381 electrical audio signal processing systems and devices/(94.1) noise or distortion suppression (94.8) peak limiting or pulsive noise compensation
381/94.9381 electrical audio signal processing systems and devices/(94.1) noise or distortion suppression (94.9) feedforward circuitry for transducer compensation
381/95381 electrical audio signal processing systems and devices/(95) microphone feedback
381/96381 electrical audio signal processing systems and devices/(96) loudspeaker feedback
381/97381 electrical audio signal processing systems and devices/(97) including phase control
381/98381 electrical audio signal processing systems and devices/(98) including frequency control
381/99381 electrical audio signal processing systems and devices/(98) including frequency control (99) having crossover filter
381/100381 electrical audio signal processing systems and devices/(98) including frequency control (99) having crossover filter (100) with active device
381/101381 electrical audio signal processing systems and devices/(98) including frequency control (101) automatic tone control
381/102381 electrical audio signal processing systems and devices/(98) including frequency control (101) automatic tone control (102) with amplitude control
381/103381 electrical audio signal processing systems and devices/(98) including frequency control (103) having automatic equalizer circuit
381/104381 electrical audio signal processing systems and devices/(104) including amplitude or volume control
381/105381 electrical audio signal processing systems and devices/(104) including amplitude or volume control (105) remote
381/106381 electrical audio signal processing systems and devices/(104) including amplitude or volume control (106) with amplitude compression/expansion
381/107381 electrical audio signal processing systems and devices/(104) including amplitude or volume control (107) automatic
381/108381 electrical audio signal processing systems and devices/(104) including amplitude or volume control (107) automatic (108) including feedback
381/109381 electrical audio signal processing systems and devices/(104) including amplitude or volume control (109) with manual volume control
381/110381 electrical audio signal processing systems and devices/(110) voice controlled
381/111381 electrical audio signal processing systems and devices/(111) circuitry combined with specific type microphone or loudspeaker
381/112381 electrical audio signal processing systems and devices/(111) circuitry combined with specific type microphone or loudspeaker (112) with carbon microphone
381/113381 electrical audio signal processing systems and devices/(111) circuitry combined with specific type microphone or loudspeaker (113) with electrostatic microphone
381/114381 electrical audio signal processing systems and devices/(111) circuitry combined with specific type microphone or loudspeaker (114) with piezoelectric microphone
381/115381 electrical audio signal processing systems and devices/(111) circuitry combined with specific type microphone or loudspeaker (115) with magnetic microphone
381/116381 electrical audio signal processing systems and devices/(111) circuitry combined with specific type microphone or loudspeaker (116) with electrostatic loudspeaker
381/117381 electrical audio signal processing systems and devices/(111) circuitry combined with specific type microphone or loudspeaker (117) with magnetic loudspeaker
381/118381 electrical audio signal processing systems and devices/(118) with musical instrument
381/119381 electrical audio signal processing systems and devices/(119) with mixer
381/120381 electrical audio signal processing systems and devices/(120) with amplifier
381/121381 electrical audio signal processing systems and devices/(120) with amplifier (121) feedback
381/122381 electrical audio signal processing systems and devices/(122) having microphone
381/123381 electrical audio signal processing systems and devices/(123) switching
381/150381 electrical audio signal processing systems and devices/(150) electro-acoustic audio transducer
381/151381 electrical audio signal processing systems and devices/(150) electro-acoustic audio transducer (151) body contact wave transfer (e.g., bone conduction earphone, larynx microphone)
381/152381 electrical audio signal processing systems and devices/(150) electro-acoustic audio transducer (152) driven diverse static structure (e.g., wall, sounding board)
381/337381 electrical audio signal processing systems and devices/(150) electro-acoustic audio transducer (337) having acoustic wave modifying structure
381/338381 electrical audio signal processing systems and devices/(150) electro-acoustic audio transducer (337) having acoustic wave modifying structure (338) with tubular waveguide or resonant element
381/339381 electrical audio signal processing systems and devices/(150) electro-acoustic audio transducer (337) having acoustic wave modifying structure (339) sound intensifying or spreading element
381/340381 electrical audio signal processing systems and devices/(150) electro-acoustic audio transducer (337) having acoustic wave modifying structure (339) sound intensifying or spreading element (340) horn
381/341381 electrical audio signal processing systems and devices/(150) electro-acoustic audio transducer (337) having acoustic wave modifying structure (339) sound intensifying or spreading element (340) horn (341) inverted, folded, or curled
381/342381 electrical audio signal processing systems and devices/(150) electro-acoustic audio transducer (337) having acoustic wave modifying structure (339) sound intensifying or spreading element (340) horn (342) plural horns or diaphragms
381/343381 electrical audio signal processing systems and devices/(150) electro-acoustic audio transducer (337) having acoustic wave modifying structure (339) sound intensifying or spreading element (340) horn (343) phase plug
381/344381 electrical audio signal processing systems and devices/(150) electro-acoustic audio transducer (337) having acoustic wave modifying structure (339) sound intensifying or spreading element (344) mouthpiece
381/345381 electrical audio signal processing systems and devices/(150) electro-acoustic audio transducer (337) having acoustic wave modifying structure (345) acoustic enclosure
381/346381 electrical audio signal processing systems and devices/(150) electro-acoustic audio transducer (337) having acoustic wave modifying structure (345) acoustic enclosure (346) acoustic resistance
381/347381 electrical audio signal processing systems and devices/(150) electro-acoustic audio transducer (337) having acoustic wave modifying structure (345) acoustic enclosure (346) acoustic resistance (347) on front side of diaphragm
381/348381 electrical audio signal processing systems and devices/(150) electro-acoustic audio transducer (337) having acoustic wave modifying structure (345) acoustic enclosure (346) acoustic resistance (348) on rear side of diaphragm
381/349381 electrical audio signal processing systems and devices/(150) electro-acoustic audio transducer (337) having acoustic wave modifying structure (345) acoustic enclosure (349) bass reflex (e.g., rear wave)
381/350381 electrical audio signal processing systems and devices/(150) electro-acoustic audio transducer (337) having acoustic wave modifying structure (345) acoustic enclosure (350) front wave
381/351381 electrical audio signal processing systems and devices/(150) electro-acoustic audio transducer (337) having acoustic wave modifying structure (345) acoustic enclosure (351) plural chambers
381/352381 electrical audio signal processing systems and devices/(150) electro-acoustic audio transducer (337) having acoustic wave modifying structure (345) acoustic enclosure (352) having internal wave reflecting means
381/353381 electrical audio signal processing systems and devices/(150) electro-acoustic audio transducer (337) having acoustic wave modifying structure (345) acoustic enclosure (353) acoustic damping or attenuating resonator
381/354381 electrical audio signal processing systems and devices/(150) electro-acoustic audio transducer (337) having acoustic wave modifying structure (354) absorbing or attenuating element
381/160381 electrical audio signal processing systems and devices/(150) electro-acoustic audio transducer (337) having acoustic wave modifying structure (160) reflecting element
381/161381 electrical audio signal processing systems and devices/(150) electro-acoustic audio transducer (161) with mechanical amplifier arrangement
381/162381 electrical audio signal processing systems and devices/(150) electro-acoustic audio transducer (162) detail of mechanical vibration coupling to transducer (e.g., tuned vibrating element)
381/163381 electrical audio signal processing systems and devices/(150) electro-acoustic audio transducer (163) having bi-directional transducer
381/164381 electrical audio signal processing systems and devices/(150) electro-acoustic audio transducer (164) thermal response to, or generation of, sound vibration
381/165381 electrical audio signal processing systems and devices/(150) electro-acoustic audio transducer (165) by modifying fluid flow
381/166381 electrical audio signal processing systems and devices/(150) electro-acoustic audio transducer (166) having a fluid as a conducting element
381/167381 electrical audio signal processing systems and devices/(150) electro-acoustic audio transducer (166) having a fluid as a conducting element (167) ionized gap, spark, or flame
381/355381 electrical audio signal processing systems and devices/(150) electro-acoustic audio transducer (355) housed microphone
381/356381 electrical audio signal processing systems and devices/(150) electro-acoustic audio transducer (355) housed microphone (356) directional
381/357381 electrical audio signal processing systems and devices/(150) electro-acoustic audio transducer (355) housed microphone (356) directional (357) with plural sound ports (e.g., pressure gradient)
381/358381 electrical audio signal processing systems and devices/(150) electro-acoustic audio transducer (355) housed microphone (356) directional (357) with plural sound ports (e.g., pressure gradient) (358) plural or variable characteristics
381/359381 electrical audio signal processing systems and devices/(150) electro-acoustic audio transducer (355) housed microphone (359) windscreen
381/360381 electrical audio signal processing systems and devices/(150) electro-acoustic audio transducer (355) housed microphone (360) cavity
381/361381 electrical audio signal processing systems and devices/(150) electro-acoustic audio transducer (355) housed microphone (361) mounting or support
381/362381 electrical audio signal processing systems and devices/(150) electro-acoustic audio transducer (355) housed microphone (361) mounting or support (362) boom (other than on headset)
381/363381 electrical audio signal processing systems and devices/(150) electro-acoustic audio transducer (355) housed microphone (361) mounting or support (363) stand or gooseneck
381/364381 electrical audio signal processing systems and devices/(150) electro-acoustic audio transducer (355) housed microphone (361) mounting or support (364) on body or clothing
381/365381 electrical audio signal processing systems and devices/(150) electro-acoustic audio transducer (355) housed microphone (361) mounting or support (365) in electronic apparatus or vehicle
381/366381 electrical audio signal processing systems and devices/(150) electro-acoustic audio transducer (355) housed microphone (361) mounting or support (366) detachable from support
381/367381 electrical audio signal processing systems and devices/(150) electro-acoustic audio transducer (355) housed microphone (361) mounting or support (367) in headgear
381/368381 electrical audio signal processing systems and devices/(150) electro-acoustic audio transducer (355) housed microphone (361) mounting or support (368) on shock absorbing support
381/369381 electrical audio signal processing systems and devices/(150) electro-acoustic audio transducer (369) microphone capsule only
381/170381 electrical audio signal processing systems and devices/(150) electro-acoustic audio transducer (369) microphone capsule only (170) compound
381/171381 electrical audio signal processing systems and devices/(150) electro-acoustic audio transducer (369) microphone capsule only (171) micromagnetic
381/172381 electrical audio signal processing systems and devices/(150) electro-acoustic audio transducer (369) microphone capsule only (172) light modifying
381/173381 electrical audio signal processing systems and devices/(150) electro-acoustic audio transducer (369) microphone capsule only (173) piezoelectric or ferroelectric
381/174381 electrical audio signal processing systems and devices/(150) electro-acoustic audio transducer (369) microphone capsule only (174) capacitive
381/175381 electrical audio signal processing systems and devices/(150) electro-acoustic audio transducer (369) microphone capsule only (175) semiconductor junction microphone
381/176381 electrical audio signal processing systems and devices/(150) electro-acoustic audio transducer (369) microphone capsule only (176) conductive diaphragm (e.g., reed, ribbon)
381/177381 electrical audio signal processing systems and devices/(150) electro-acoustic audio transducer (369) microphone capsule only (177) dynamic (e.g., magnetic)
381/178381 electrical audio signal processing systems and devices/(150) electro-acoustic audio transducer (369) microphone capsule only (178) vibrating electrical contract
381/179381 electrical audio signal processing systems and devices/(150) electro-acoustic audio transducer (369) microphone capsule only (179) resistive
381/180381 electrical audio signal processing systems and devices/(150) electro-acoustic audio transducer (369) microphone capsule only (179) resistive (180) granular or carbon
381/181381 electrical audio signal processing systems and devices/(150) electro-acoustic audio transducer (369) microphone capsule only (179) resistive (180) granular or carbon (181) differential
381/182381 electrical audio signal processing systems and devices/(150) electro-acoustic audio transducer (182) plural or compound reproducers
381/370381 electrical audio signal processing systems and devices/(150) electro-acoustic audio transducer (182) plural or compound reproducers (370) headphone
381/371381 electrical audio signal processing systems and devices/(150) electro-acoustic audio transducer (182) plural or compound reproducers (370) headphone (371) particular cup
381/372381 electrical audio signal processing systems and devices/(150) electro-acoustic audio transducer (182) plural or compound reproducers (370) headphone (371) particular cup (372) having mechanical or acoustic sound attenuation
381/373381 electrical audio signal processing systems and devices/(150) electro-acoustic audio transducer (182) plural or compound reproducers (370) headphone (371) particular cup (373) openable to ambient
381/374381 electrical audio signal processing systems and devices/(150) electro-acoustic audio transducer (182) plural or compound reproducers (370) headphone (374) particular support structure
381/375381 electrical audio signal processing systems and devices/(150) electro-acoustic audio transducer (182) plural or compound reproducers (370) headphone (374) particular support structure (375) and microphone
381/376381 electrical audio signal processing systems and devices/(150) electro-acoustic audio transducer (182) plural or compound reproducers (370) headphone (374) particular support structure (376) headgear
381/377381 electrical audio signal processing systems and devices/(150) electro-acoustic audio transducer (182) plural or compound reproducers (370) headphone (374) particular support structure (377) plural bands
381/378381 electrical audio signal processing systems and devices/(150) electro-acoustic audio transducer (182) plural or compound reproducers (370) headphone (374) particular support structure (378) single band
381/379381 electrical audio signal processing systems and devices/(150) electro-acoustic audio transducer (182) plural or compound reproducers (370) headphone (374) particular support structure (379) adjustable
381/380381 electrical audio signal processing systems and devices/(150) electro-acoustic audio transducer (182) plural or compound reproducers (370) headphone (374) particular support structure (380) ear insert or bone conduction
381/381381 electrical audio signal processing systems and devices/(150) electro-acoustic audio transducer (182) plural or compound reproducers (370) headphone (374) particular support structure (381) hook over ear or spectacle
381/382381 electrical audio signal processing systems and devices/(150) electro-acoustic audio transducer (182) plural or compound reproducers (370) headphone (374) particular support structure (382) sound conducting tube
381/383381 electrical audio signal processing systems and devices/(150) electro-acoustic audio transducer (182) plural or compound reproducers (370) headphone (374) particular support structure (383) collapsible
381/384381 electrical audio signal processing systems and devices/(150) electro-acoustic audio transducer (182) plural or compound reproducers (370) headphone (384) electrical hardware feature
381/184381 electrical audio signal processing systems and devices/(150) electro-acoustic audio transducer (182) plural or compound reproducers (184) different types of diaphragms
381/185381 electrical audio signal processing systems and devices/(150) electro-acoustic audio transducer (182) plural or compound reproducers (185) having common voice coil
381/186381 electrical audio signal processing systems and devices/(150) electro-acoustic audio transducer (182) plural or compound reproducers (186) plural diaphragms
381/385381 electrical audio signal processing systems and devices/(150) electro-acoustic audio transducer (385) having body supported structure other than on head
381/386381 electrical audio signal processing systems and devices/(150) electro-acoustic audio transducer (386) mounting or support feature of housed loudspeaker
381/387381 electrical audio signal processing systems and devices/(150) electro-acoustic audio transducer (386) mounting or support feature of housed loudspeaker (387) directional, directible, or movable
381/388381 electrical audio signal processing systems and devices/(150) electro-acoustic audio transducer (386) mounting or support feature of housed loudspeaker (388) with furniture, clothing, or image display
381/389381 electrical audio signal processing systems and devices/(150) electro-acoustic audio transducer (386) mounting or support feature of housed loudspeaker (389) in vehicle
381/390381 electrical audio signal processing systems and devices/(150) electro-acoustic audio transducer (386) mounting or support feature of housed loudspeaker (390) boom or support arm
381/391381 electrical audio signal processing systems and devices/(150) electro-acoustic audio transducer (386) mounting or support feature of housed loudspeaker (391) grille
381/392381 electrical audio signal processing systems and devices/(150) electro-acoustic audio transducer (386) mounting or support feature of housed loudspeaker (392) resilient
381/393381 electrical audio signal processing systems and devices/(150) electro-acoustic audio transducer (386) mounting or support feature of housed loudspeaker (393) electrical insulation feature
381/394381 electrical audio signal processing systems and devices/(150) electro-acoustic audio transducer (386) mounting or support feature of housed loudspeaker (394) electrical hardware
381/395381 electrical audio signal processing systems and devices/(150) electro-acoustic audio transducer (386) mounting or support feature of housed loudspeaker (395) mechanical detail
381/189381 electrical audio signal processing systems and devices/(150) electro-acoustic audio transducer (189) having protective or sheilding feature
381/190381 electrical audio signal processing systems and devices/(150) electro-acoustic audio transducer (190) electrostrictive, magnetostrictive, or piezoelectric
381/191381 electrical audio signal processing systems and devices/(150) electro-acoustic audio transducer (191) having electrostatic element (e.g., electret, vibrating plate)
381/396381 electrical audio signal processing systems and devices/(150) electro-acoustic audio transducer (396) electromagnetic (e.g., dyynamic)
381/397381 electrical audio signal processing systems and devices/(150) electro-acoustic audio transducer (396) electromagnetic (e.g., dyynamic) (397) cooling feature
381/398381 electrical audio signal processing systems and devices/(150) electro-acoustic audio transducer (396) electromagnetic (e.g., dyynamic) (398) having diaphragm support feature
381/399381 electrical audio signal processing systems and devices/(150) electro-acoustic audio transducer (396) electromagnetic (e.g., dyynamic) (399) conductive diaphragm (e.g., ribbon)
381/400381 electrical audio signal processing systems and devices/(150) electro-acoustic audio transducer (396) electromagnetic (e.g., dyynamic) (400) movable voice coil
381/401381 electrical audio signal processing systems and devices/(150) electro-acoustic audio transducer (396) electromagnetic (e.g., dyynamic) (400) movable voice coil (401) multiple voice coils
381/402381 electrical audio signal processing systems and devices/(150) electro-acoustic audio transducer (396) electromagnetic (e.g., dyynamic) (400) movable voice coil (401) multiple voice coils (402) for different frequencies
381/403381 electrical audio signal processing systems and devices/(150) electro-acoustic audio transducer (396) electromagnetic (e.g., dyynamic) (400) movable voice coil (403) centering from outside bobbin or diaphragm
381/404381 electrical audio signal processing systems and devices/(150) electro-acoustic audio transducer (396) electromagnetic (e.g., dyynamic) (400) movable voice coil (403) centering from outside bobbin or diaphragm (404) spider
381/405381 electrical audio signal processing systems and devices/(150) electro-acoustic audio transducer (396) electromagnetic (e.g., dyynamic) (400) movable voice coil (405) centering from within bobbin or diaphragm
381/406381 electrical audio signal processing systems and devices/(150) electro-acoustic audio transducer (396) electromagnetic (e.g., dyynamic) (400) movable voice coil (406) field coil
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