IPC-Stelle: H04R 9/04 [Version 2006.01]

SymbolTypTitel
HSKSECTION H — ELECTRICITY
H04KLELECTRIC COMMUNICATION TECHNIQUE
H04RUKLLOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS (generating mechanical vibrations in general B06B; transducers for measuring particular variables G01; transducers in clocks G04; producing sounds with frequency not determined by supply frequency G10K; transducers in recording or reproducing heads G11B; transducers in motors H02) [6]
H04R 1/00HGRDetails of transducers (diaphragms H04R 7/00; characterised by the nature of the transducer, see the relevant group of main groups H04R 9/00-H04R 23/00; mounting radio sets or communication systems in helmets A42B 3/30; mountings specially adapted for telephone equipment H04M 1/02)
H04R 1/02UGR1
.Casings; Cabinets; Mountings therein (H04R 1/28 takes precedence)
H04R 1/04UGR2
. .Structural association of microphone with electric circuitry therefor (in deaf-aid sets H04R 25/00)
H04R 1/06UGR1
.Arranging circuit leads; Relieving strain on circuit leads
H04R 1/08UGR1
.Mouthpieces; Attachments therefor
H04R 1/10UGR1
.Earpieces; Attachments therefor
H04R 1/12UGR1
.Sanitary or hygienic devices for mouthpieces or earpieces, e.g. for protecting against infection
H04R 1/14UGR1
.Throat mountings for microphones
H04R 1/16UGR1
.Mounting or connecting stylus to transducer with or without damping means
H04R 1/18UGR2
. .Holders for styli; Mounting holders on transducers
H04R 1/20UGR1
.Arrangements for obtaining desired frequency or directional characteristics (for stereophonic purposes H04R 5/00; speech enhancement by processing of the speech signal G10L 21/02)
H04R 1/22UGR2
. .for obtaining desired frequency characteristic only (circuits for combining transducers having different responses H04R 3/00)
H04R 1/24UGR3
. . .Structural combinations of separate transducers or of parts of the same transducer and responsive respectively to two or more frequency ranges
H04R 1/26UGR3
. . .Spatial arrangement of separate transducers responsive to two or more frequency ranges
H04R 1/28UGR3
. . .Transducer mountings or enclosures designed for specific frequency response; Transducer enclosures modified by provision of mechanical or acoustic impedances, e.g. resonator, damping means
H04R 1/30UGR3
. . .Combinations of transducers with horns, e.g. with mechanical matching means (horns in general G10K)
H04R 1/32UGR2
. .for obtaining desired directional characteristic only
H04R 1/34UGR3
. . .by using a single transducer with sound reflecting, diffracting, directing or guiding means
H04R 1/36UGR4
. . . .by using a single aperture of dimensions not greater than the shortest operating wavelength
H04R 1/38UGR4
. . . .in which sound waves act upon both sides of a diaphragm and incorporating acoustic phase-shifting means, e.g. pressure-gradient microphone
H04R 1/40UGR3
. . .by combining a number of identical transducers
H04R 1/42UGR1
.Combinations of transducers with fluid-pressure or other non-electrical amplifying means
H04R 1/44UGR1
.Special adaptations for subaqueous use, e.g. for hydrophone
H04R 1/46UGR1
.Special adaptations for use as contact microphones, e.g. on musical instrument, on stethoscope (throat mountings H04R 1/14)
H04R 3/00HGRCircuits for transducers (for stereophonic arrangements H04R 5/04; arrangements for producing a reverberation or echo sound G10K 15/08; amplifiers H03F)
H04R 3/02UGR1
.for preventing acoustic reaction
H04R 3/04UGR1
.for correcting frequency response
H04R 3/06UGR2
. .of electrostatic transducers
H04R 3/08UGR2
. .of electromagnetic transducers
H04R 3/10UGR2
. .of variable-resistance microphones
H04R 3/12UGR1
.for distributing signals to two or more loud-speakers
H04R 3/14UGR2
. .Cross-over networks
H04R 5/00HGRStereophonic arrangements (stereophonic pick-ups H04R 9/16, H04R 11/12, H04R 17/08, H04R 19/10)
H04R 5/02UGR1
.Spatial or constructional arrangements of loud-speakers
H04R 5/027UGR1
.Spatial or constructional arrangements of microphones, e.g. in dummy heads [3]
H04R 5/033UGR1
.Headphones for stereophonic communication [3]
H04R 5/04UGR1
.Circuit arrangements (combinations of amplifiers H03F 3/68; stereophonic systems H04S)
H04R 7/00HGRDiaphragms for electromechanical transducers (in general F16J 3/00); Cones (for musical instruments G10)
H04R 7/02UGR1
.characterised by the construction
H04R 7/04UGR2
. .Plane diaphragms
H04R 7/06UGR3
. . .comprising a plurality of sections or layers
H04R 7/08UGR4
. . . .comprising superposed layers separated by air or other fluid
H04R 7/10UGR4
. . . .comprising superposed layers in contact
H04R 7/12UGR2
. .Non-planar diaphragms or cones
H04R 7/14UGR3
. . .corrugated, pleated, or ribbed
H04R 7/16UGR1
.Mounting or tensioning of diaphragms or cones
H04R 7/18UGR2
. .at the periphery
H04R 7/20UGR3
. . .Securing diaphragm or cone resiliently to support by flexible material, springs, cords, or strands
H04R 7/22UGR3
. . .Clamping rim of diaphragm or cone against seating
H04R 7/24UGR2
. .Tensioning by means acting directly on free portion of diaphragm or cone
H04R 7/26UGR1
.Damping by means acting directly on free portion of diaphragm or cone (air damping H04R 1/28)
H04R 9/00HGRTransducers of moving-coil, moving-strip, or moving-wire type
H04R 9/02UGR1
.Details
H04R 9/04UGR2
. .Construction, mounting, or centering of coil
H04R 9/06UGR1
.Loud-speakers
H04R 9/08UGR1
.Microphones
H04R 9/10UGR1
.Telephone receivers
H04R 9/12UGR1
.Gramophone pick-ups using a stylus; Recorders using a stylus
H04R 9/14UGR2
. .comprising two or more styli or transducers (H04R 9/16 takes precedence)
H04R 9/16UGR2
. .signals being recorded or played-back by vibration of a stylus in two orthogonal directions simultaneously
H04R 9/18UGR1
.Resonant transducers, i.e. adapted to produce maximum output at a predetermined frequency
H04R 11/00HGRTransducers of moving-armature or moving-core type (acoustic diaphragm of magnetisable material directly co-acting with electromagnet H04R 13/00)
H04R 11/02UGR1
.Loud-speakers
H04R 11/04UGR1
.Microphones
H04R 11/06UGR1
.Telephone receivers
H04R 11/08UGR1
.Gramophone pick-ups using a stylus; Recorders using a stylus
H04R 11/10UGR2
. .comprising two or more styli or transducers (H04R 11/12 takes precedence)
H04R 11/12UGR2
. .signals being recorded or played-back by vibration of a stylus in two orthogonal directions simultaneously
H04R 11/14UGR1
.Resonant transducers, i.e. adapted to produce maximum output at a predetermined frequency
H04R 13/00HGRTransducers having an acoustic diaphragm of magnetisable material directly co-acting with electromagnet
H04R 13/02UGR1
.Telephone receivers
H04R 15/00HGRMagnetostrictive transducers (magnetostrictive elements in general H01L 41/00)
H04R 15/02UGR1
.Resonant transducers, i.e. adapted to produce maximum output at a predetermined frequency
H04R 17/00HGRPiezo-electric transducers; Electrostrictive transducers (piezo-electric or electrostrictive elements in general H01L 41/00; details of piezo-electric or electrostrictive motors, generators or positioners H02N 2/00)
H04R 17/02UGR1
.Microphones
H04R 17/04UGR1
.Gramophone pick-ups using a stylus; Recorders using a stylus
H04R 17/06UGR2
. .comprising two or more styli or transducers (H04R 17/08 takes precedence)
H04R 17/08UGR2
. .signals being recorded or played-back by vibration of a stylus in two orthogonal directions simultaneously
H04R 17/10UGR1
.Resonant transducers, i.e. adapted to produce maximum output at a predetermined frequency
H04R 19/00HGRElectrostatic transducers
H04R 19/01UGR1
.characterised by the use of electrets [3]
H04R 19/02UGR1
.Loud-speakers (H04R 19/01 takes precedence) [3]
H04R 19/04UGR1
.Microphones (H04R 19/01 takes precedence) [3]
H04R 19/06UGR1
.Gramophone pick-ups using a stylus; Recorders using a stylus (H04R 19/01 takes precedence) [3]
H04R 19/08UGR2
. .comprising two or more styli or transducers (H04R 19/10 takes precedence)
H04R 19/10UGR2
. .signals being recorded or played-back by vibration of a stylus in two orthogonal directions simultaneously
H04R 21/00HGRVariable-resistance transducers (gaseous-resistance transducers H04R 23/00; magneto-resistive transducers H04R 23/00)
H04R 21/02UGR1
.Microphones
H04R 21/04UGR1
.Gramophone pick-ups using a stylus; Recorders using a stylus
H04R 23/00HGRTransducers other than those covered by groups H04R 9/00-H04R 21/00
H04R 23/02UGR1
.Transducers using more than one principle simultaneously
H04R 25/00HGRDeaf-aid sets (constructions of transducers per seH04R 9/00-H04R 23/00; structural combination with spectacle frames G02C 11/06; processing of speech signals G10L 21/00)
H04R 25/02UGR1
.adapted to be supported entirely by ear
H04R 25/04UGR1
.comprising pocket amplifiers
H04R 27/00HGRPublic address systems (circuits for preventing acoustic reaction H04R 3/02; circuits for distributing signals to loud-speakers H04R 3/12; amplifiers H03F)
H04R 27/02UGR1
.Amplifying systems for the deaf
H04R 27/04UGR1
.Electric megaphones
H04R 29/00HGRMonitoring arrangements; Testing arrangements
H04R 31/00HGRApparatus or processes specially adapted for the manufacture of transducers or diaphragms therefor (processes or apparatus specially adapted for the manufacture of micro-structural devices or systems, e.g. in combination with electrical devices, B81C)