EP3140997B1 - Dispositif de transmission de sons pour ecouteur intra-auriculaire et ecouteur intra-auriculaire - Google Patents

Dispositif de transmission de sons pour ecouteur intra-auriculaire et ecouteur intra-auriculaire Download PDF

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Publication number
EP3140997B1
EP3140997B1 EP15718953.1A EP15718953A EP3140997B1 EP 3140997 B1 EP3140997 B1 EP 3140997B1 EP 15718953 A EP15718953 A EP 15718953A EP 3140997 B1 EP3140997 B1 EP 3140997B1
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EP
European Patent Office
Prior art keywords
sounds
vibration
sound
diffusion
chamber
Prior art date
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Active
Application number
EP15718953.1A
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German (de)
English (en)
French (fr)
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EP3140997A1 (fr
Inventor
Dominique Delamour
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
CHENE, RICHARD
DELAMOUR, DOMINIQUE
MIKLITARIAN, ALAIN
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Individual
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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R1/00—Details of transducers, loudspeakers or microphones
    • H04R1/10—Earpieces; Attachments therefor ; Earphones; Monophonic headphones
    • H04R1/1008—Earpieces of the supra-aural or circum-aural type
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R1/00—Details of transducers, loudspeakers or microphones
    • H04R1/20—Arrangements for obtaining desired frequency or directional characteristics
    • H04R1/22—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired frequency characteristic only 
    • H04R1/28—Transducer mountings or enclosures modified by provision of mechanical or acoustic impedances, e.g. resonator, damping means
    • H04R1/2807—Enclosures comprising vibrating or resonating arrangements
    • H04R1/2838—Enclosures comprising vibrating or resonating arrangements of the bandpass type
    • H04R1/2846—Vents, i.e. ports, e.g. shape thereof or tuning thereof with damping material
    • H04R1/2849—Vents, i.e. ports, e.g. shape thereof or tuning thereof with damping material for loudspeaker transducers
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
    • G10K11/00—Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
    • G10K11/18—Methods or devices for transmitting, conducting or directing sound
    • G10K11/22—Methods or devices for transmitting, conducting or directing sound for conducting sound through hollow pipes, e.g. speaking tubes
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R1/00—Details of transducers, loudspeakers or microphones
    • H04R1/20—Arrangements for obtaining desired frequency or directional characteristics
    • H04R1/22—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired frequency characteristic only 
    • H04R1/28—Transducer mountings or enclosures modified by provision of mechanical or acoustic impedances, e.g. resonator, damping means
    • H04R1/2807—Enclosures comprising vibrating or resonating arrangements
    • H04R1/2853—Enclosures comprising vibrating or resonating arrangements using an acoustic labyrinth or a transmission line
    • H04R1/2857—Enclosures comprising vibrating or resonating arrangements using an acoustic labyrinth or a transmission line for loudspeaker transducers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R1/00—Details of transducers, loudspeakers or microphones
    • H04R1/10—Earpieces; Attachments therefor ; Earphones; Monophonic headphones
    • H04R1/1016—Earpieces of the intra-aural type
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R1/00—Details of transducers, loudspeakers or microphones
    • H04R1/10—Earpieces; Attachments therefor ; Earphones; Monophonic headphones
    • H04R1/105—Earpiece supports, e.g. ear hooks
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R1/00—Details of transducers, loudspeakers or microphones
    • H04R1/10—Earpieces; Attachments therefor ; Earphones; Monophonic headphones
    • H04R1/1058—Manufacture or assembly
    • H04R1/1075—Mountings of transducers in earphones or headphones
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R1/00—Details of transducers, loudspeakers or microphones
    • H04R1/20—Arrangements for obtaining desired frequency or directional characteristics
    • H04R1/22—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired frequency characteristic only 
    • H04R1/28—Transducer mountings or enclosures modified by provision of mechanical or acoustic impedances, e.g. resonator, damping means
    • H04R1/2807—Enclosures comprising vibrating or resonating arrangements
    • H04R1/2811—Enclosures comprising vibrating or resonating arrangements for loudspeaker transducers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R1/00—Details of transducers, loudspeakers or microphones
    • H04R1/20—Arrangements for obtaining desired frequency or directional characteristics
    • H04R1/32—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only
    • H04R1/34—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only by using a single transducer with sound reflecting, diffracting, directing or guiding means
    • H04R1/345—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only by using a single transducer with sound reflecting, diffracting, directing or guiding means for loudspeakers

Definitions

  • the present invention relates to the field of sound transmission devices, in particular, music.
  • headphones adapted to be worn on the head, comprising two headphones connected by a bow which are intended to cover the ears of the wearer of the helmet. These headphones are commonly referred to as closed earphones.
  • headphones without connecting hoop that are intended to be positioned directly in an ear.
  • These headphones are commonly referred to as in-ear earphones.
  • an in-ear earpiece is known having a closure cap of the ear canal entrance of an ear or an earphone installed freely in said ear canal as taught by the patent application. FR2915049 .
  • an in-ear earpiece comprises an electronic speaker on which is mounted a flexible tip to be blocked directly in the conduit of an ear.
  • Such an earphone emits sounds in the immediate vicinity of the eardrum, the sound flow path in the flexible tip being short, of the order of 2-3 cm.
  • the sound performance of such in-ear headphones is not optimal.
  • the sound performance can be determined according to several parameters, in particular, the quality of the highs, the quality of the mediums, the quality of the basses and the spatiality of the sounds emitted.
  • spatiality corresponds to the ability of sounds to be interpreted by the listener's brain as coming from various sources and from different locations. For example, when a listener is able to restore spatiality, the listener hears sounds from various sources and positioned more or less distant from him. In particular, woodwind instruments may seem closer to him than copper instruments, which improves the immersion of the listener.
  • the conventional in-ear headphones do not have sufficient spatiality since the speaker of the earphone is very close to the ear of the listener, which has a disadvantage.
  • a headphone whose speaker comprises an electronic module capable of generating a spatiality of the sounds by shifting certain frequencies relative to others. Not to mention its high cost, such an earphone allows to offer an artificial spatiality, which is not optimal to allow the immersion of the listener.
  • EP0360517 an earphone having a resonance chamber.
  • the spatiality of sounds is not optimal.
  • the invention therefore aims to overcome these disadvantages by providing a simple design earphone that is able to provide a sound with optimal spatial qualities to improve listening listeners.
  • the invention relates to a sound transmission device for ear-canal phone according to claim 1, comprising an inlet opening extending along an input axis, said inlet opening being adapted to receive a sound emission source, an output aperture adapted to be presented in an ear and a diffusion chamber adapted to conduct the upstream sound downstream from said inlet opening to said outlet opening.
  • said diffusion enclosure comprises, facing said inlet opening, a first vibration wall extending orthogonally to the input axis adapted to resonate following a sound emission along said axis of 'Entrance.
  • the sound transmission device thus fulfills a function of a vibration box which makes it possible to shift the frequencies of the sounds emitted by the sound emission source and thus to increase the spatiality of the sounds. Unlike a conventional earpiece, the immersion of the listener is increased. During tests, the listener does not feel any compression of the sound. On the contrary, listening is affordable and natural.
  • the inlet opening and the outlet opening are offset by at least 5 cm, preferably by at least 10 cm.
  • the sound transmission device has a curved shape adapted to be mounted on an upper part of an ear so as to improve the ergonomics.
  • the diffusion chamber comprises an upstream portion of decreasing cross section.
  • the sounds can be advantageously compressed during transmission, which improves the dynamics and intensity of said sounds.
  • the diffusion chamber comprises a second vibration wall substantially parallel to said first vibration wall.
  • two vibration walls make it possible to increase the vibrations in the transmission device, thus increasing the spatiality of the sounds.
  • the inlet opening is formed in the second vibration wall, which limits the size of the transmission device.
  • the diffusion chamber comprises at least one upper core in contact with the first vibration wall for the tender.
  • the upper core makes it possible to increase the tension of the first vibration wall so that it vibrates in the manner of a drum skin. In addition, this increases the power of the sounds and thus avoids using an oversized sound source.
  • the diffusion chamber comprising a second vibration wall parallel to the first vibration wall, said upper core is mounted between the first vibration wall and the second vibration wall for transmitting mechanically the vibrations between said vibration walls.
  • the vibrations of the two walls of vibration are synchronized, which increases the spatiality of the sound.
  • said upper core extends substantially parallel to said input axis.
  • said upper soul has a limited space in the diffusion chamber, which limits the risk of attenuation of the power of sounds.
  • said diffusion chamber extending longitudinally, the diffusion chamber comprises at least one sounding part mounted in a lateral edge of said diffusion chamber and projecting into the cavity of said chamber of diffusion.
  • the harmony piece allows, like a violin bar of a violin, to synthesize the sounds in order to balance the different sounds coming from the vibrations so as to form a coherent whole.
  • said diffusion chamber comprising an upper core
  • said sound piece is mounted downstream of said upper core.
  • said harmony piece can filter all the sounds from vibrations.
  • the harmony piece and the upper soul do not come into contact.
  • the sound transmission device comprises a blind lower chamber.
  • a blind chamber makes it possible to lengthen the flow path of the sounds between the entrance opening and the exit opening, which improves the spatiality as well as the dynamics.
  • said blind lower chamber extends in the extension of the diffusion chamber.
  • the communication between the lower chamber and the diffusion chamber is direct.
  • the first vibration wall forms part of the diffusion chamber and the lower chamber.
  • the second vibration wall forms part of the diffusion chamber and the lower chamber.
  • said lower blind chamber has a lower core to increase vibrations in the lower chamber to enhance the spatiality effect. In addition, this increases the power of the sounds and thus avoids using an oversized sound source.
  • said lower blind chamber has a movable wall adapted to change the depth of said blind lower chamber.
  • a movable wall allows the listener to adjust the length of the sound flow path, which makes it possible to adjust the high, mid and low-frequency components of the sounds.
  • the listener can adjust each listener according to his preference in order to benefit from an optimal listening with a spatiality adapted to his tastes.
  • the invention also relates to an earpiece comprising a sound transmission device as presented above and a sound emission source mounted in the input opening of said sound transmission device.
  • FIG. 1 it is schematically represented an in-ear earphone 2 according to the invention mounted on a human ear 1 in the use position.
  • the in-ear earphone 2 comprises a sound transmission device 4 in which a sound emission source 3 is mounted.
  • the sound emission source 3 is in the form of a loudspeaker. speaker, of diameter between 12 and 15 mm, connected to a wired audio player. Nevertheless, it goes without saying that a wireless link, in particular Bluetooth, could be suitable.
  • the sound transmission device 4 comprises an inlet opening 41, extending along an input axis X, which is adapted to receive the sound source of emission 3, in particular, a loudspeaker.
  • the inlet opening 41 has an annular shape so as to cooperate by complementarity of shapes with a ring-shaped speaker.
  • the sound transmission device 4 further comprises an outlet opening 42 adapted to be inserted into the duct of the ear.
  • the outlet opening 42 has a diameter of the order of 3 to 5 mm so as to create a large final compression in order to obtain a significant decompression in the ear of the listener so as to increase the dynamic behavior of the sounds received.
  • the diameter of the outlet opening 42 is of the order of 3 to 4 mm.
  • the sound transmission device 4 comprises a diffusion chamber 40 able to conduct the upstream sound downstream from said inlet opening 41 towards said outlet opening 42.
  • the device sound transmission unit 4 comprises a blind lower chamber 8 which extends from the inlet opening 41.
  • blind chamber 8 is meant a chamber with no opening except for the inlet opening 41.
  • the lower blind chamber 8 makes it possible to reflect the sounds coming from the inlet opening 41 before returning them towards the exit opening 42.
  • the sound transmission device comprises only a single inlet opening 41 and a single outlet opening 42 in order to avoid any reduction in the power of the sounds between the inlet opening 41 and the outlet opening 42.
  • the inlet opening 41 comprises a damper (glue, elastomeric seal, etc.) for damping the vibrations generated by the sound emission source 3.
  • the sound transmission device 4 is curved so as to allow its ergonomic suspension on an ear 1.
  • the diffusion chamber 40 allows direct transmission of sounds between the inlet opening 41 to the outlet opening 42 and a mechanical sound treatment by vibration.
  • the diffusion chamber 40 comprises successively an upstream portion 5, an intermediate portion 6 and a downstream portion 7 for conducting the sound between the inlet opening 41 and the outlet opening 42.
  • the parts 5, 6, 7 are connected together by interlocking, but it goes without saying that certain parts could form a one-piece assembly, in particular the upstream and intermediate parts 6, so that the downstream part 7 remains orientable by the listener to facilitate the introduction of the earpiece 2 on his ear.
  • the upstream part 5 advantageously makes it possible to generate a resonance in the diffusion chamber 40 in order to mechanically shift the sound frequencies in order to create a spatiality of the sounds. Subsequently, the upstream portion 5 will also be designated resonance chamber 5.
  • the upstream portion 5 extends in a plane orthogonal to the input axis X at the inlet opening 41.
  • the upstream portion 5 comprises a first vibration wall 51 facing the inlet opening 41 and extending orthogonally to the input axis X.
  • the upstream portion 5 comprises a second vibration wall 52 which is substantially parallel to the first vibration wall 51.
  • the inlet opening 41 is formed in the second vibration wall 52 so that the sound waves from the sound emission source come into contact with the first vibration wall 51 to then be guided upstream downstream between the vibration walls 51, 52.
  • the vibration walls 51, 52 are laterally connected by an inner side wall 53 and an outer side wall 54.
  • the vibration walls 51, 52 may be curved while remaining parallel to each other to conform to the shape of the skull. listener while ensuring optimal vibration.
  • the upstream portion 5 of the diffusion chamber 40 has a decreasing cross section from upstream to downstream so as to allow compression of sounds.
  • the upstream portion 5 is curved at its downstream end so as to allow its mounting to an ear 1 as previously described.
  • the upstream portion 5 is formed of a rigid material of the PVC type in order to allow an optimal vibration of the vibration walls 51, 52 but it goes without saying that other materials could also be suitable.
  • the upstream portion 5 has a length of between 3 and 5 cm and an upstream width of between 10 and 15 mm and a downstream width of between 3 and 5 mm.
  • the upstream width is adapted to the width of the sound emission source, that is to say, the loudspeaker. It goes without saying that other dimensions could also include.
  • the thickness of the upstream portion 5 is of the order of 1-3 mm so that a source of sound emission can vibrate the first vibration wall optimally.
  • the intermediate portion 6 advantageously allows the compressed sound to be guided between the upstream part 5 and the downstream part 7.
  • the intermediate portion 6 of the diffusion enclosure 40 has a substantially constant cross section from upstream to downstream and is curved.
  • the downstream part 7 advantageously allows the compressed sound of the intermediate part 6 to be guided towards the duct of the ear 7.
  • the downstream part 7 is bent so as to facilitate its insertion into the duct of the ear 1 after its passage around the pavilion of the ear 1.
  • the intermediate portion 6 of the diffusion enclosure 40 has a substantially constant cross section from upstream to downstream.
  • the downstream end of the downstream part 7 may be provided with a tip 9 ( Figure 4 ) to improve the interaction between the sound transmission device 4 and the ear 1 of the listener.
  • said tip 9 is made of elastomeric material.
  • the diffusion enclosure 40 is configured to maintain the output aperture of the transmission device in the entrance of the conch so as to allow the listener to listen to external sounds as taught by the request.
  • patent FR2915049 is configured to maintain the output aperture of the transmission device in the entrance of the conch so as to allow the listener to listen to external sounds as taught by the request.
  • the sound transmission device 4 comprises a lower blind chamber 8 which extends in the extension of the upstream portion 5 of the diffusion chamber 40.
  • the blind lower chamber 8 is diametrically opposed to the diffusion chamber 40 with respect to the inlet opening axis 41 as illustrated in FIG. figure 2 .
  • the diffusion enclosure 40 and the lower blind chamber 8 are made of the same material, in particular PVC.
  • the lower blind chamber 8 is preferably hollow, that is to say, provided with a cavity. Also, the lower blind chamber 8 guides the sounds in its cavity before guiding them in the diffusion chamber 40 before escaping at the outlet opening 42.
  • the sound guidance in the blind lower chamber 8 makes it possible to increase the spacing of the frequencies of the sound (treble, midrange and bass) and thus reinforce the spatiality of the sounds perceived by the user. Such a lower chamber 8 is thus particularly advantageous.
  • the lower chamber 8 has a first vibration wall 81 extending in the extension of the first vibration wall 51 of the resonance chamber 5 and a second vibration wall 82 extending in the extension of the second vibration wall 52 of the resonance chamber 5.
  • the length of the lower chamber 8 is set so that the superposition of the sounds circulating directly in the diffusion chamber 40 (direct sounds) and those circulating indirectly after reflection in the bottom of the lower chamber 8 (indirect sounds) is not noticeable. by the human ear.
  • the length of the lower chamber 8 is less than 30 mm to avoid an unpleasant overlay of direct and indirect sounds and is greater than 10 mm so as to generate a spatiality perceptible by the human ear.
  • the length of the lower chamber 8 is equal to about 20% of the length of the resonance chamber, that is to say the length of the downstream part 5 of the diffusion enclosure 40.
  • the walls of the lower chamber 8 are thickened compared to the walls of the diffusion chamber 40 so as to favor the medium and low-frequency components of the sounds circulating in the lower chamber 8.
  • the thickness of the side walls of the lower chamber 8 are of the order of 2-4 mm.
  • the lower blind chamber 8 is optional and it goes without saying that the sound transmission device 4 may not include such a blind lower chamber 8.
  • the sound transmission device 4 when the sound transmission device 4 has no lower chamber 8, the latter may be provided with a wedging member adapted to be placed near the lobe of the ear 1 in order to stabilize the earphone 2 on the ear 1.
  • the noise emissions cause a vibration of the first vibration wall 51 of the resonance chamber 5, which causes a shift of "ordered" sounds from the opening of input 41.
  • sensory perceptions are increased.
  • the listener advantageously does not need to increase the volume to enjoy a better immersion.
  • the sound transmission device 4 ' comprises a harmony piece 10 mounted in the outer lateral edge 54 of the upstream part 5 of the diffusion chamber 40 and extending into the cavity of the diffusion chamber 40.
  • the harmony piece 10 has a fixing edge 10A and a free edge 10B as illustrated in FIG. figure 4 .
  • the harmony piece 10 extends from the outer lateral edge 54 to the inner lateral edge 53 of the upstream portion 5 as illustrated in FIG. figure 4 .
  • the edge 10A attachment of the harmony piece 10 is sealingly secured in the outer lateral edge 54 to prevent any loss of power transmitted sounds.
  • the free end of the soundpiece 10 extends away from the inner side edge to form a bottleneck sounds to adapt the component of the midrange sounds.
  • the sounds thus circulate above, below and at the free end of the piece of harmony 10 to be modified by said piece of harmony 10.
  • the harmony piece 10 is in the form of a flat piece which extends between the first vibration wall 51 and the second vibration wall 52 in order to influence the sounds coming from the inlet opening 41.
  • the harmony piece 10 preferably extends parallel to the vibration walls 51, 52.
  • the harmony piece 10 allows, in the manner of a harmony bar of a violin, to equalize the sound components of the diffusion chamber 40.
  • the vibrations coming from the vibration walls 51, 52 of the upstream part 5 are smoothed by the harmony part 10.
  • the harmony part 10 performs an equalizer function for the sounds of the upstream part 5.
  • the harmony piece 10 is preferably made of wood, plastic or composite material.
  • the nature of the material forming the sounding part 10 results from a compromise between its resonance properties and its absorption properties.
  • the sound component 10 may be material from the upstream portion of the diffusion chamber 40. Such an alternative can reduce the cost of the sound transmission device 4 ', no assembly step of the piece of harmony 10 is no longer necessary.
  • the sound transmission device 4 comprises an upper core 11 and preferably a lower core 12 which are respectively housed in the resonance chamber 5 and in the lower blind chamber 8.
  • the upper core 11 is arranged to exert a mechanical tension between the vibration walls 51, 52 in order to improve their vibratory characteristics in the manner of a violin core.
  • the upper core 11 makes it possible to mechanically connect the first vibration wall 51 with the second vibration wall 52 so that any vibration of the first vibration wall 51 is communicated to the second vibration wall 52.
  • the lower core 12 makes it possible to fulfill the same function for the vibration walls 81, 82 of the lower chamber 8.
  • the upper core 11 is mounted in the diffusion chamber 40 near the center of the upstream portion 5.
  • the lower core 12 is mounted in the lower blind chamber 8 near its center.
  • the sounding part 10 comprises an upstream portion of smaller section so as to allow the introduction of the upper core 11 in the diffusion chamber 40 near the harmony piece 10 as illustrated in FIG. figure 4 , the upper soul 11 and the harmony piece 10 not being in contact.
  • each core 11, 12 is in the form of an element extending orthogonally to the vibration walls 51, 52, 81, 82, that is to say substantially parallel to the axis X.
  • Each core 11, 12 furthermore has a length slightly greater than that of the thickness of the chambers 5, 8 in which they are housed, preferably, of the order of 10%.
  • each web 11, 12 is mounted prestressing in the chambers 5, 8 in order to tension the vibration walls 51, 52, 81, 82 in the manner of a drum.
  • the sound transmission device 4 'could comprise only a single core 11, 12.
  • the sound transmission device 4' could comprise one or more souls 11, 12 without a piece of harmony 10.
  • the cores 11, 12 make it possible to transmit the vibrations of the first vibration walls 51, 81 to the second vibration walls 52, 82 mechanically. Vibration of several vibration walls 51, 52, 81, 82 of a chamber 5, 8 makes it possible to reinforce the offset of the frequencies of the sounds and thus to increase the spatiality.
  • Souls 11, 12 allow to act on the dynamics of sounds by increasing the gap between weak sounds and loud sounds so as to offer a striking proximity effect. For example, on certain acoustic music, the listener has the feeling that the sounds are played in front of him, which reinforces the impression of immersion.
  • the lower blind chamber 8 comprises an adjustable movable wall 13 adapted to modify the volume of the lower blind chamber 8.
  • the sound transmission device 4 "comprises a control member 14 adapted to move in translation said movable wall 13 in the blind lower chamber 8.
  • control member 14 is in the form of a rotary wheel which is connected by a rack connection to the adjustable movable wall 13, but it goes without saying that the connection could be different.
  • control member could be in the form of a button secured to the movable wall 13 and adapted to translate in a groove of the lower chamber 8.
  • the displacement stroke of the movable wall 13 is 10-15 mm order in this example of implementation.
  • the listener can adjust for each earphone the spatiality of the sound he wants by acting on the control member 14 and thus move the movable wall 13.
  • manipulation of the control member 14 and the mobile wall 13 makes it possible to act on the frequency components of the sounds in order to reach the "point of auditory satisfaction" known to those skilled in the art under the English designation "sweet spot", such a point of auditory satisfaction being specific to each listener.
  • the sound transmission device 4 "comprises a damping layer 99, preferably of elastomer, fixed on the outer face of the first vibration wall 51 so as to attenuate the vibrations of the lower components of the sounds. that such a damping layer 99 can be applied to any embodiment of sound transmission device according to the invention.
  • a user equips each of his ears with an earphone 2 according to the invention by suspending it from its sound transmission device 4 whose shape is curved as illustrated in FIG. figure 2 .
  • the user activates his music player which emits sounds via his loudspeaker 3 into the input aperture 41 in order to vibrate the first vibration walls 51, 81 which extend orthogonally to the input axis X opposite the inlet opening 41.
  • the second vibration walls 52, 82 also vibrate in a synchronized manner, which increases the offset between the frequencies of the sounds from the speaker 3 and therefore spatiality.
  • Some vibrating sounds are conducted directly to the outlet opening 42 while others are conducted indirectly after having circulated in the lower blind chamber 8.
  • the user adjusts the depth of the blind chamber 8 in order to adapt the spatiality and dynamics of sounds.
  • the vibrating sounds are then synthesized together by the piece of harmony 10 which smooths the sounds and improve the auditory perception.
  • the synthesized sounds are then driven by the intermediate part 6 and the downstream part 7 to increase their spatiality before being sent into the ear of the user via the outlet opening 42.
  • the sounds are emitted at a distance from the ear in order to undergo a mechanical treatment that increases the spatiality of the sounds and the immersion of the listener.
  • the headphones according to the invention allow optimal listening and natural.

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  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Health & Medical Sciences (AREA)
  • Otolaryngology (AREA)
  • Multimedia (AREA)
  • Headphones And Earphones (AREA)
  • Details Of Audible-Bandwidth Transducers (AREA)
EP15718953.1A 2014-05-05 2015-05-04 Dispositif de transmission de sons pour ecouteur intra-auriculaire et ecouteur intra-auriculaire Active EP3140997B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR1454035A FR3020737B1 (fr) 2014-05-05 2014-05-05 Dispositif de transmission de sons pour ecouteur intra-auriculaire et ecouteur intra-auriculaire
PCT/EP2015/059639 WO2015169713A1 (fr) 2014-05-05 2015-05-04 Dispositif de transmission de sons pour ecouteur intra-auriculaire et ecouteur intra-auriculaire

Publications (2)

Publication Number Publication Date
EP3140997A1 EP3140997A1 (fr) 2017-03-15
EP3140997B1 true EP3140997B1 (fr) 2018-10-31

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EP15718953.1A Active EP3140997B1 (fr) 2014-05-05 2015-05-04 Dispositif de transmission de sons pour ecouteur intra-auriculaire et ecouteur intra-auriculaire

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Country Link
US (1) US10142725B2 (ja)
EP (1) EP3140997B1 (ja)
JP (1) JP6576365B2 (ja)
CN (1) CN106256136B (ja)
CA (1) CA2947384A1 (ja)
FR (1) FR3020737B1 (ja)
SG (1) SG11201609102QA (ja)
WO (1) WO2015169713A1 (ja)

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FR3069746B1 (fr) * 2017-07-28 2020-05-29 Richard Chene Dispositif de transmission du son pour ecouteur comportant un canal principal et un canal auxiliaire
FR3074001B1 (fr) * 2017-11-20 2020-05-29 Richard Chene Dispositif allonge de transmission du son pour ecouteur
US10945058B2 (en) * 2019-06-27 2021-03-09 Synaptics Incorporated Balanced stereo headphones with un-balanced air chambers
USD967071S1 (en) * 2022-03-29 2022-10-18 Tao Wu Set of earphones

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Publication number Publication date
EP3140997A1 (fr) 2017-03-15
US20170180847A1 (en) 2017-06-22
CN106256136B (zh) 2019-09-03
JP6576365B2 (ja) 2019-09-18
JP2017517960A (ja) 2017-06-29
FR3020737A1 (fr) 2015-11-06
WO2015169713A1 (fr) 2015-11-12
FR3020737B1 (fr) 2017-10-20
SG11201609102QA (en) 2016-12-29
CA2947384A1 (fr) 2015-11-12
CN106256136A (zh) 2016-12-21
US10142725B2 (en) 2018-11-27

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