WO2017072237A1

WO2017072237A1 - Audio headset

Info

Publication number: WO2017072237A1
Application number: PCT/EP2016/075940
Authority: WO
Inventors: Dominique Delamour
Original assignee: Chene, Richard; Miklitarian, Alain
Priority date: 2015-10-30
Filing date: 2016-10-27
Publication date: 2017-05-04
Also published as: FR3043296B1; FR3043296A1

Abstract

An audio headset comprising two sound transmission devices connected by a support member (3), each sound transmission device (4) comprising an input opening (41) extending along an input axis, said input opening (41) being able to receive a sound emission source (2), an outlet opening (42) capable of being presented in an ear and a diffusion chamber (40) able to conduct the sound from upstream to downstream from said input opening (41) to said outlet opening (42), the diffusion chamber (40) comprising, opposite the input opening (41), a first vibration wall (51) extending orthogonally to the input axis and capable of resonating following an emission of sound along said inlet access.

Description

HEADPHONES

TECHNICAL FIELD AND PRIOR ART The present invention relates to the field of sound transmission devices, in particular an audio headset.

In the prior art is known headphones, adapted to be worn on the head, comprising two earphones 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.

The sound performance of such 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. As a reminder, 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 brass, which improves the immersion of the listener. In practice, the earphones do not have sufficient spatiality since the speaker of the earphone is very close to the ear of the listener, which has a disadvantage. In order to solve this drawback, a headphone is known 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.

The invention therefore aims to overcome these disadvantages by providing a headset of simple design that is able to provide a sound with optimal spatial qualities to improve listening listeners. GENERAL PRESENTATION OF ΠΝΥΕ ΙΟΝ

To this end, the invention relates to an audio headset comprising two sound transmission devices connected by a support member, each sound transmission device comprising an inlet opening extending along an input axis, said opening of input being adapted to receive a source of sound emission, an outlet opening 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 .

The device is remarkable in that 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 according to the invention 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.

Such immersion is all the more pleasant that it is performed mechanically by vibration of a wall. An orthogonal wall at the source of emission allows an optimal vibration without deformation of the sounds. In addition, the distance between the entrance opening and the exit opening makes it possible to increase the spatiality in comparison with a conventional earpiece which is fixed close to the ear canal. Preferably, the inlet opening and the outlet opening are offset by at least 5 cm, preferably at least 10 cm.

In addition, the use of a support member makes it possible to suspend the sound transmission devices that can vibrate freely without risk of attenuation by the cranial box. Preferably, the support member is connected to the first vibration wall of each transmission device. Thus, the damping related to the link is taken into account upstream of the transmission chain, which prevents a deformation of the sounds during the setting vibration.

Preferably, the support member is connected to the first vibration wall at a connection point located opposite the inlet opening. Thus, the support member is attached to the place that receives the most sound energy, which adjusts the sound power according to the nature of the connection.

Preferably, each transmission device ^extends longitudinally, in particular in a rectilinear manner, in order to compress the axially sounds and thereby limit any deformation. In addition, such a feature increases the accuracy of sounds, which is very advantageous for professional use.

Preferably, the support member comprises a bow, preferably adjustable to adapt to different user morphologies.

Preferably, each diffusion chamber comprises an upstream portion of decreasing cross section. Thus, the sounds can be advantageously compressed during transmission, which improves the dynamics and intensity of said sounds.

According to a preferred aspect, each diffusion chamber comprises a second vibration wall substantially parallel to said first vibration wall. Thus, two vibration walls make it possible to increase the vibrations in the transmission device, thus increasing the spatiality of the sounds.

Preferably, the ^inlet opening is formed in the second wall vibration, which limits the space of the transmission device.

Preferably, each sound transmission device comprises a blind rear chamber. Such a blind room allows to extend the path of flow of sounds between the input aperture and the output aperture, which improves spatiality as well as dynamics.

Preferably, each blind rear chamber ^extends in the extension of the diffusion chamber. Thus, the communication between the rear chamber and the diffusion chamber is direct. More preferably, the first vibration wall forms part of the diffusion enclosure and the rear chamber. Preferably still, the second vibration wall forms part of the diffusion enclosure and the rear chamber.

More preferably, each blind rear chamber has a core to increase vibration in the rear chamber to enhance the spatiality effect. In addition, this increases the power of the sounds and thus avoids using an oversized sound source.

Preferably, each blind rear chamber has a movable wall adapted to modify the depth of said blind rear chamber. Advantageously, such 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. In other words, 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.

Preferably, each diffusion chamber comprises a downstream portion in which opens the outlet opening, said downstream portion is curved. Thus, the outlet opening can be directed along the axis of the ear of a user. In addition, such a curvature makes it possible to prevent the sound transmission device from being in contact with the cranial box. Preferably, each diffusion chamber comprises at least one core in contact with the first vibration wall to tension it. The 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, it increases the power sounds and thus avoids using an oversized sound source.

Preferably, each diffusion chamber having a second vibration wall parallel to the first vibration wall, said core is mounted between the first vibration wall and the second vibration wall to mechanically transmit the vibrations between said vibration walls. Thus, the vibrations of the two walls of vibration are synchronized, which increases the spatiality of the sound. Preferably, said core extends substantially parallel to said input axis. Thus, said soul has a limited space in the diffusion chamber, which limits the risk of attenuation of the power of sounds.

According to a preferred aspect, each diffusion chamber extending longitudinally, each diffusion chamber comprises at least one harmony piece mounted in a lateral edge of said diffusion chamber and projecting into the cavity of said diffusion chamber. . 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.

Preferably, each diffusion chamber having a core, said piece ^of band is mounted downstream of said core. Thus, said harmony piece can filter all the sounds from vibrations. Advantageously, the harmony part and the soul does ^not come into contact.

The invention also relates to a headset comprising a sound emission source mounted in each input opening of said sound transmission devices.

PRE $ ENTATIQN OF $ FIVE $

The invention will be better understood on reading the description which will follow, given solely by way of example, and referring to the appended drawings in which:

Figures 1 and 2 are schematic representations of an audio headset according to the invention comprising two sound transmission device; FIG. 3 is a partial schematic representation by transparency of a sound transmission device of the helmet of FIGS. 1 and 2;

Figure 4 is a schematic sectional representation of a sound transmission device of the helmet of Figures 1 and 2;

Figure 5 is a schematic perspective representation of a first embodiment of connection means to a sound transmission device; Figure 6 is a schematic sectional representation of another embodiment of connecting means; and

Figure 7 is a schematic representation ^of another embodiment of a headset according to the invention worn by a user.

It should be noted that the figures disclose the invention in detail to implement the invention, said figures can of course be used to better define the invention where appropriate.

DESCRIPTION OF ONE OR MORE EUBS ESM EAIJSATSON AND _^ DEJAI JN WORK

Referring to Figures 1 to 2, there is shown an audio headset 1 according to one embodiment of the invention.

The headset 1 comprises two sound transmission devices 4 connected by a support member 3. The support member 3 has an inner face facing the skull of the user and an outer face opposite to the inner face. The headphones 1 further comprises two speakers 2 respectively mounted in the sound transmission devices 4 and connected to an audio connector (not shown), in particular of the JACK or USB type. In this example, each loudspeaker 2 has a diameter of between 12 and 15 mm. Nevertheless, it goes without saying that other sound sources could also be suitable. Likewise, a wired type headset was introduced. Nevertheless, it goes without saying that a wireless link, in particular Bluetooth, could be suitable.

In this embodiment, the speakers 2 are visible when the headphones 1 is worn but it goes without saying that the headphones 1 could also include a covering 300, for example a plastic shell, in order to mask the loudspeakers 2 as illustrated in FIG.

Transmission device

With reference to FIGS. 3 and 4, there is shown schematically a sound transmission device 4. The structure and function of a sound transmission device 4 is analogous to the sound transmission device 4 which has been presented previously. by the applicants in the patent application FR 1454035. Such a sound transmission device 4 allows, in the manner of a musical instrument, to generate vibrations in order to increase in particular the spatiality and the precision of the sounds perceived by the user.

As illustrated in FIGS. 3 and 4, the sound transmission device 4 comprises an inlet opening 41, extending along an input axis, which is capable of receiving a loudspeaker 2. Also, preferably, the inlet opening 41 has an annular shape so as to cooperate by complementarity of shapes with a loudspeaker 2 of annular shape. The sound transmission device 4 further comprises an outlet opening 42 adapted to be inserted into the duct of the ear. For this purpose, 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. Preferably, the diameter of the outlet opening 42 is of the order of 3 to 4 mm.

According to the invention, with reference to FIGS. 3 and 4, 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. In this embodiment, the sound transmission device 4 comprises a blind rear chamber 8 which extends from the inlet opening 41. By blind chamber 8, is meant a chamber devoid ^of opening other than the entrance opening 41. As will be presented hereinafter, the blind rear chamber 8 makes it possible to reflect the sounds coming from the entry opening 41 before returning them towards the exit opening 42. Preferably, the sound transmission device 4 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. Preferably, the inlet opening 41 comprises a damper (glue, elastomer seal, etc.) for damping the vibrations generated by the loudspeaker 2.

As will be discussed subsequently, the enclosure diffusion 40 allows a direct transmission of sound between the inlet ^opening 41 towards the outlet opening 42 and a mechanical processing of sounds by vibrations. Thus, the sound source is advantageously offset from the ear of the user.

In this embodiment, with reference to FIG. 4, the diffusion enclosure 40 comprises successively an upstream portion 40A, an intermediate portion 40B and a downstream portion 40C for conducting the sound between the inlet opening 41 and the outlet opening 42. In this example, the upstream 40A and 40B intermediate parts form a one-piece assembly so that the downstream portion 40C remains steerable by the listener to facilitate the introduction of the outlet opening 42 on his ear. It goes without saying that the parts 40A, 40B, 40C could be connected together by interlocking.

The portions 40A, 40B, 40C of the diffusion enclosure 40 will now be presented independently.

The upstream part 40A

The upstream portion 40A 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 40A will also be designated resonance chamber 40A.

Preferably, the upstream portion 40A extends in a plane orthogonal to the input axis X at the inlet opening 41. For this purpose, with reference to FIG. 4, the upstream portion 40 A comprises a first vibration wall 51 facing the inlet opening 41 and extending orthogonally to the input axis X. , the upstream portion 40A includes a second vibration wall 52 which is substantially parallel to the first vibration wall 51. As illustrated in Figure 2, the inlet ^opening 41 is formed in the second wall vibration 52 so that the sound waves from ^the source of noise emission come into contact with the first wall vibration 51 then be guided upstream downstream between the vibration walls 51, 52. The vibration walls 51, 52 are connected laterally by an inner side wall and an outer side wall. Vibration of the walls 51, 52 ^extend, preferably, substantially linearly to generate optimal vibration while maintaining a small footprint. Indeed, a rectilinear sound transmission device 4 can extend the support member 3 aesthetically while obtaining a headphone whose size is similar to traditional headphones. In addition, the compression of the sounds is progressive, which improves the perception of the sounds. Nevertheless, it goes without saying that the diffusion chamber 40 could also be curved.

Referring to Figure 3, the upstream portion 40A of the diffusion chamber 40 has a decreasing cross section from upstream to downstream so as to allow compression of sounds. Preferably, the upstream portion 40A 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.

Preferably, the upstream portion 40A 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. Advantageously, the length and the width are adapted to the width of the sound emission source, that is to say, the loudspeaker. It goes without saying that other dimensions could also be suitable, for example, for a 25 mm loudspeaker.

More preferably, the thickness of the upstream portion 40A is of the order of 1 -3 mm so that a source of sound emission, in particular a loudspeaker, can vibrate the first vibration wall 51 optimally.

The intermediate part 40B The intermediate portion 40 B advantageously guides the compressed sound between the upstream portion 40A and the downstream portion 40C. Referring to Figures 2 and 3, the intermediate portion 40B of the diffusion chamber 40 has a substantially constant cross section from upstream to downstream and is curved.

The downstream part 40C

The downstream portion 40C advantageously guides the compressed sound of the intermediate portion 40B to the duct of the ear of the user. The section of the downstream portion 40C decreases to form a compression stage. The downstream portion 40C is connected to the intermediate portion 40B by a flexible sleeve 5 (see Figs 1 and 2) so as to allow inclination of the downstream portion 40C relative to the intermediate portion 40B and, thus, to facilitate the implementation in place of the outlet opening 42 in the ear canal of the user.

Optionally, the downstream end of the downstream portion 40C may be provided with a tip 9 (Figures 1 and 2) to improve the interaction between the sound transmission device 4 and the ear 1 of the auditor. Preferably, said tip 9 is made of elastomeric material.

According to another aspect, the diffusion chamber 40 is configured to maintain the outlet opening 4 of the sound transmission device in ^the entrance of the concha of the ear so as to allow the listener to listen to ^the external sounds as taught by the patent application FR2915049.

Borgne_8 rear bedroom

In addition to the diffusion enclosure 40, the sound transmission device 4 comprises a blind rear chamber 8 which extends in the extension of the upstream portion 40A of the diffusion enclosure 40. In other words, the blind rear chamber 8 is diametrically opposed to the diffusion chamber 40 with respect to the input opening axis 41 as illustrated in FIG. 3. Preferably, the diffusion enclosure 40 and the blind rear chamber 8 are made of the same material in particular, PVC. The blind rear chamber 8 is preferably hollow, that is, provided with a cavity. Also, the blind rear chamber 8 makes it possible to guide the sound into its cavity before guiding them in ^the diffusion chamber 40 before escaping at the outlet opening 42. The guiding sound in the blind rear 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 rear chamber 8 is thus particularly advantageous. The rear chamber 8 has a first vibration wall extending in the extension of the first vibration wall 51 and a second vibration wall extending in the extension of the second vibration wall 52.

The length of the rear chamber 8 is set so that the superposition of flowing sounds directly into ^the diffusion chamber 40 (direct sound) and those flowing indirectly after reflection in the bottom of the rear chamber 8 (indirect sounds) is not perceptible by the human ear. Preferably, the length of the rear 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. In practice, the length of the rear chamber 8 is equal to about 20% of the length of the resonance chamber, that is to say the length of the downstream part of the diffusion enclosure 40.

Preferably, the walls of the rear chamber 8, in particular its side walls, are thickened compared to the walls of the diffusion chamber 40 so as to favor the mid and bass components of the sounds circulating in the rear chamber 8. A For example, the thickness of the side walls of the rear chamber 8 are of the order of 2-4 mm. The blind rear chamber 8 is optional and it goes without saying that the sound transmission device 4 may not include such a blind rear chamber 8.

Thanks to the sound transmission device 4 according to the invention, the noise emissions cause a vibration of the first vibration wall 51, which causes a offset "ordered" sounds from the input aperture 41. This results for the listener a sensation of auditory aperture, that is to say, an increase in the gap between the "right" and "left" parts of a stereo music when listening. In addition, sensory perceptions are increased. The listener advantageously does not need to increase the volume to enjoy a better immersion.

With reference to FIG. 3, the sound transmission device 4 comprises a sounding part 10 mounted in an outer lateral edge of the upstream part 40 A of the diffusion enclosure 40 and extending into the cavity of the diffusion speaker 40. In other words, the harmony piece 10 has a fixing edge and a free edge as shown in Figure 3 and presented in the patent application FR 1454035.

In this example, the harmony piece 10 extends from the outer side edge to the inner side edge of the upstream portion 40A. The fastening edge of the harmony piece 10 is sealingly secured in the outer lateral edge to prevent any loss of power of the transmitted sounds.

Preferably, the free edge of the soundpiece 10 extends away from the inner side edge to form a bottleneck sound 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.

Preferably, the band part 10 is in the form ^of a flat part which extends between the first wall 51 and the second vibration wall vibration 52 in order to influence the sound from the opening entry 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. Thus, the vibrations coming from the vibration walls 51, 52 of the upstream part 40A are smoothed by the harmony part 10. In other words, the sound part 10 performs an equalizer function for the sounds of the upstream part 40A. 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. Alternatively, 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 no longer necessary.

Preferably, again with reference to FIG. 3, the sound transmission device 4 comprises a core 1 1 housed in the diffusion enclosure 40, in particular in its upstream part 40A.

The 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. In other words, the web 1 1 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. As illustrated in FIG. 3, the core 1 1 is mounted in the diffusion chamber 40 near the center of the upstream portion 40A.

It goes without saying that the blind rear chamber 8 could also include such a core in order to fulfill the same function for the vibration walls of the rear chamber 8. Preferably, when a core 1 1 is used with a piece of harmony 10, the harmony piece 10 has an upstream portion of smaller section so as to allow the introduction of the core 1 1 in the diffusion chamber 40 near the sound part 10 as shown in FIG. Figure 3, the upper core 1 1 and the harmony piece 10 not being in contact.

In this exemplary embodiment, the core 11 is in the form of an element extending orthogonally to the vibration walls 51, 52, that is to say substantially parallel to the input axis. X. The core 1 1 furthermore has a length slightly greater than that of the thickness of the diffusion enclosure 40 in which it is housed, preferably, of the order of 10%. In other words, the web 1 1 is mounted preload to stretch the vibration walls 51, 52 in the manner of a drum.

It goes without saying that the sound transmission device 4 could comprise several souls. In particular, the blind rear chamber 8 could also comprise a core in order to tension the vibration walls of the blind rear chamber 8. Likewise, the sound transmission device 4 could comprise one or more webs 1 1, without a piece of equipment. harmony 10. A core 1 1 makes it possible to transmit the vibrations of the first vibration wall 51 to the second vibration wall 52 mechanically. The vibration of several vibration walls 51, 52 makes it possible to increase the frequency offset of the sounds and thus to increase the spatiality. The soul 1 1 also makes it possible to act on the dynamics of the sounds by increasing the gap between the weak sounds and the loud sounds so as to offer a striking effect of proximity. As ^an example, some acoustic music, the listener has the sensation that sounds are played in front of him, which reinforces the immersive feel. According to another embodiment not shown, the blind rear chamber 8 comprises an adjustable movable wall adapted to change the volume of the blind rear chamber 8. For this purpose, the sound transmission device 4 comprises a control member adapted to move in translation said movable wall in the blind rear chamber 8. For example, the control member is in the form of a rotary wheel which is connected by a rack connection to the adjustable movable wall but it is obvious that the connection could be different. In particular, the control member could be in the form of a button integral with the movable wall and adapted to translate in a groove of the rear chamber 8. The displacement stroke of the movable wall is, for example order of 10-15 mm. Advantageously, the listener can set for each sound transmission device 4 the sound spatiality it desires by acting on the control member and thus move the movable wall. Manipulation of the control member and the movable wall 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 name "sweet spot" such a point of auditory satisfaction being peculiar to each listener.

With a setting adapted to each ear of the listener, listening is more comfortable and natural. In particular, we note an enrichment of the bass giving more depth to the sounds and an increased presence in the mediums offering a better intelligibility to the whole of the sound reproduction.

According to another aspect not shown, the sound transmission device 4 may comprise a damping layer, 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. . It goes without saying that such a damping layer can be applied to any embodiment of sound transmission device.

Support member 3 As shown in FIG. 2, each sound transmission device 4 is connected to the support member 3 by connecting means 6 which are configured to avoid any dissipation of the vibrations generated by the sound transmission devices. 4.

The support member 3 comprises, in this example, a hoop 30 of curved shape and which is adjustable in length to fit the shape of the head of each user. Advantageously, the portion of the hoop 30 intended to be in contact with the user is covered with a coating, for example a foam 31 to improve comfort. Advantageously, as illustrated in FIGS. 1 and 2, the support member 3 also comprises wedging elements 32 extending from the arch 30 and adapted to bear against the back of a user's head. . Thus, the headphones 1 is positioned steadily on the head of a user so that the sound transmission devices 4 are not in contact with the skull of the user, avoiding thus any dissipation of the sound vibrations generated by the transmission devices

4.

Preferably, the connecting means 6 of the support member 3 are connected to the first vibration wall 51 of a sound transmission device 4, preferably in a point of connection P (FIG. look at the entrance opening 41. Such a connection point P makes it possible to limit the dissipation of the vibrations due to the connection. The damping is performed in a preliminary manner to the transmission of sounds, which advantageously avoids a deformation during transmission, which is complex to master. Thanks to the invention, the vibrations can thus be calibrated optimally taking into account the connection point P.

Preferably, the portion of the first vibration wall 51 which is connected to the connecting means 6 is in excess of the wall of the diffusion chamber 40. In this example, the thickness of the connection (wall of the means of link 6 and first vibration wall 51 facing the inlet opening 41) is 3 mm while the thickness of the remainder of the first vibration wall 51 is of the order of 1.5 mm so as to can dampen the acute components of the sounds while the thickness of the second vibration wall 52 is of the order of 1 mm.

The connecting means 6 are further configured to discard each transmission device 4 of the cranium of the user in order ^to prevent the latter from disturbing the transmission of sound by the vibration of walls 51, 52. Preferably , each sound transmission device 4 is connected to the support member 3 only in a single connection point P. Thus, the damping relative to the connection is limited.

With reference to FIGS. 4 and 5, the connecting means 6 comprise an angled wall 60 so as to damp any displacement of the transmission device 4, in the manner of a spring. Preferably, the bent wall 60 has a U-shaped section. Preferably, the bent wall 60 is adjustably mounted with the hoop 30 in order to adjust the positioning of the transmission device 4 and, consequently, the position the exit aperture 42 relative to an ear of the user. The connecting means 6 advantageously allow height adjustment of the transmission devices 4 in order to facilitate the introduction of the transmission devices 4.

Alternatively, with reference to FIG. 6, the support means 6 are integrated with the arch 30 of the support member 3, the end of the arch 30 being directly connected to the first vibration wall 51. The hoop 30 thus fulfills a spring blade function for damping the vibrations of the transmission device 4.

Example of implementation

By way of example, with reference to FIG. 7, a user wears an audio headset 1 according to one embodiment of the invention. For this purpose, the support member 3 is placed at the top of the skull and the transmission devices 4 extend substantially vertically, their outlet openings 42 being respectively housed in the ears of the user. In this embodiment, the headphones 1 comprises a covering 300 which makes it possible to mask the loudspeakers 2.

The loudspeakers 2 are positioned at the upper part of the skull so that the sound and vibrations induced by the sound transmission devices 4 move down to the ears.

The user activates his music player which emits sounds via the loudspeakers 2 into the input openings 41 of the transmission devices 4 in order to vibrate the first vibration walls 51 which extend orthogonally to the axis d input X next to the input opening 41. Thanks to the core 1 1, the second vibration walls 52 also vibrate in a synchronized manner, which increases the offset between the frequencies of the sounds from the speaker 2 and therefore spatiality.

Some vibrated sounds are conducted directly to the outlet opening 42 while others are conducted indirectly after having passed through the blind rear chamber 8.

The vibrating sounds, direct or indirect, 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 portion 40 B and the downstream portion 40C to increase their spatiality before being sent into the ear of the user via the outlet opening 42. Unlike the prior art in which sounds are emitted very close to the ear, 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. Advantageously, the accuracy of the sounds is increased, which is beneficial, in particular, for professional use.

Thanks to the invention, by synergy of its various components, one obtains a dynamic, an equalization and a spatiality of the improved sounds. The headphones according to the invention thus allows optimal listening and natural.

Claims

REVENDIÇATIQNS

1. An audio headset comprising two sound transmission devices connected by a support member (3), each sound transmission device (4) having an input opening (41) extending along an input axis (X), said inlet opening (41) being adapted to receive a source of sound emission (2), an outlet opening (42) adapted to be presented in an ear and a diffusion chamber (40) adapted to conduct the sound of upstream downstream from said inlet opening (41) to said outlet opening (42), characterized in that said diffusion enclosure (40) comprises, opposite said inlet opening (41), a first wall vibration (51) ^extending orthogonally to the input axis (X) adapted to resonate due to a noise emission according to said input axis (X).

Headphones according to claim 1, wherein the support member (3) is connected to the first vibration wall (51) of each transmission device

(4).

3. An audio headset according to claim 2, wherein the support member (3) is connected to the first vibration wall (51) at a connection point (P) located opposite the entrance opening (41). ).

Headphones according to one of claims 1 to 3, wherein each transmission device (4) extends longitudinally.

5. Headphones according to one of claims 1 to 4 wherein the support member (3) comprises a bow (30), preferably adjustable.

Audio headset according to one of claims 1 to 5, wherein each transmission device (4) has a blind rear chamber (8).

7. Headphone according to claim 6, wherein each blind rear chamber (8) extends in the extension of the diffusion chamber (40).

8. An audio headset according to one of claims 1 to 7, wherein, each diffusion chamber (40) has a downstream portion (40C) into which the outlet opening (42), said downstream portion (40C) is curved.

9. Headphone according to one of claims 1 to 8, wherein, each diffusion chamber (40) comprises at least one core (1 1) in contact with the first vibration wall (51) for the tender.

10. Headphones according to one of claims 1 to 9, wherein, each diffusion chamber (40) extending longitudinally, each diffusion chamber (40) comprises at least one piece of harmony (1 0) mounted in a side edge of said diffusion enclosure (40) and projecting into the cavity of said diffusion enclosure (40).