FR3059864A1 - WIRELESS EARTER WITH AMBIENT NOISE RESTITUTION - Google Patents

Abstract

A wireless earpiece (100, 200, 300) for broadcasting in the ear a sound from a device (500) connected to the earphone by a wireless sound link, including a housing (110) , 210, 310), a loudspeaker (121, 246), a CPU (145, 245, 345) for signal processing and transmission provided with a chip (451) capable of communicating according to a local communication protocol wireless, and a battery (150), said earphone being characterized in that it comprises at least one microphone (144a, 144b, 244, 344) allowing it to restore the ambient sounds in the ear of the user.

Description

® FRENCH REPUBLIC

NATIONAL INSTITUTE OF INDUSTRIAL PROPERTY © Publication number:

(to be used only for reproduction orders) (© National registration number

059 864

62065

COURBEVOIE © IntCI ⁸ : H 04 R 1/10 (2017.01)

PATENT INVENTION APPLICATION

A1

©) Date of filing: 07.12.16. ©) Priority: © Applicant (s): LOONSTEEN BENOIT— FR. @ Inventor (s): LOONSTEEN BENOIT. ©) Date of availability of the request: 08.06.18 Bulletin 18/23. ©) List of documents cited in the preliminary search report: See the end of this booklet (© References to other related national documents: ® Holder (s): LOONSTEEN BENOIT. ©) Extension request (s): ©) Agent (s): IPSIDE.

(Ô4) WIRELESS EARPHONE WITH AMBIENT NOISE REDUCTION.

FR 3 059 864 - A1 (£ /) The invention relates to a wireless earpiece (100, 200, 300), making it possible to broadcast in the ear a sound coming from a device (500) connected to the earpiece by a wireless sound link, comprising a housing (110, 210, 310), a loudspeaker (121,246), a central processing unit (145, 245, 345) for processing and transmitting the signal provided with a chip (451) suitable to communicate according to a local wireless communication protocol, and a battery (150), said earphone being characterized in that it comprises at least one microphone (144a, 144b, 244, 344) allowing it to reproduce the ambient sounds in the ear of the user.

113

Wireless earphone with ambient noise reproduction

FIELD OF THE INVENTION

The present invention belongs to the field of listening and sound reproduction devices such as earphones and headphones, it relates more particularly to a Bluetooth earphone (registered trademark) for ambient noise reproduction.

STATE OF THE ART

Sound reproduction devices used for listening to an audio source, such as music for example, from a device such as an MP3 player, a smartphone, a computer, etc. exist in different categories and cover a wide variety of products. Some devices are intended for portable use by being worn directly by the user at ear level and include headphones and earphones, others are intended for indoor use such as audio speakers for example. These various devices are linked to the audio sources either by a wired connection of the jack type for example, or by a wireless connection and in particular a Bluetooth connection.

In contrast to headphones, which generally have a headband enclosing the head of the user and connecting two sound reproduction transducers each placed against an ear of the user by means of a circumaural pad, the headphones, sometimes called earpieces, designate listening devices comprising transducers which are placed in the ear or which are hooked thereto via an earloop. In the following, reference is made exclusively to wireless headphones.

These headphones have in-ear transducers and can be partially or fully placed in the user's ear canal.

There are currently a multitude of technologies in the field of headphones that meet different needs ranging from a simple leisure accessory to sophisticated professional equipment.

Existing devices include a single earpiece, or two earphones, a right earphone and a left earphone, in the case of stereophonic devices. When there are two of them, the headphones are generally connected by an electronic cord.

The headphones differ in the first place by their modes of coupling with the ear and in the second place by the performances and the functionalities which they offer.

Certain earphones are coupled to the ear by a sliding in the conch of the latter of a generally circular rigid tip, they nevertheless present problems of acoustic coupling in individuals with an atrial morphology unsuitable for shape and or size. of these headphones. In addition, prolonged use of this type of headphones causes persistent pain in the shell due to the support of the tips. In order to improve the acoustic coupling and reduce the pain felt, the ear tips of some headphones are covered with an elastic membrane of flexible foam filling in the unwanted spaces.

There are also earphones which couple to the ear by a more or less deep penetration in the ear canal. These headphones, called in-ear headphones, have undergone a relatively recent development which has enabled them to have better sound insulation than older models of headphones, in particular thanks to adapters generally made of silicone which correspond to various diameters of ear canals.

The American company Decibullz produces and markets wired or wireless earphones under the registered trademark Decibullz, comprising an ear-tip covered with a silicone adapter preceded by a plug of thermoplastic material which can be molded according to the shape of the pinna. The molding of the plugs is carried out by the user himself by dipping said plugs in hot water and then modeling them in the hollow of his ears. These headphones are described in document US 20160073193.

This solution offers better sound insulation but requires handling which is not practical and which can prove to be dangerous.

More efficient and more comfortable earphone models are directly inspired by hearing aids and offer tailor-made or behind-the-ear shapes. The custom in-ear headphones are made by taking a digital impression and molding the ear canal of the individual for whom the headphones are intended.

The firm Ultimate Ears, specialized in high-end headsets and earphones intended for music professionals, manufactures the world's first custom wireless earphones designed for the general public, the shell of these earphones is made from data from a scan of both the inner ear and the outer ear of the individual.

Existing earphones and headphones are designed to allow some acoustic isolation in the sense of minimizing the perception of ambient noise that can interfere with listening to music. As a result, each earpiece has a volume threshold above which ambient sounds become difficult to perceive or even completely inaudible. This threshold can be high in headphones with poor insulation, pushing the user to exceed the acceptable limits of the sound volume at the risk of impairing their hearing, as it can be quite low in headphones incorporating ANR technology, or active reduction noise.

The major drawback of this sound insulation is the danger that it can represent for people using such headphones in situations that require attention and vigilance such as the practice of physical activity in an urban environment or piloting. of a vehicle for example, in which case the user must be sensitive to any sound information warning him of an event to be taken into account.

PRESENTATION OF THE INVENTION

Based on this state of affairs, the applicant proposes a solution which overcomes the limitations of the prior art and proposes a wireless earpiece, making it possible to broadcast in the ear a sound coming from a device connected to the earpiece by a sound link. wireless, and comprising a box, a speaker, a central signal processing and transmission unit provided with a chip capable of communicating according to a wireless communication protocol, a battery, and at least one microphone allowing the earpiece to reproduce ambient sounds in the user's ear. This allows the user not to be isolated from outside noise when listening to music, for example by carrying out an activity requiring minimum alertness.

The wireless local communication chip is a Bluetooth chip for example.

Advantageously, the housing contains an electronic module comprising the microphone, the central unit, and a battery compartment in which the battery is placed. The microphone is therefore concealed in the housing, not changing the appearance and shape of the earpiece.

According to a preferred embodiment of the invention, the housing is formed by the assembly of a proximal shell and a distal shell, fitting one into the other, said housing being intended to be placed behind the pavilion of the ear in the manner of a hearing aid hearing aid, the earpiece then comprising a tip which is placed inside the ear canal.

In a first embodiment of the invention, the endpiece is connected to the electronic module contained in the housing by an electric wire, the loudspeaker of the earpiece being offset in said endpiece.

More particularly, the tip has a dome which clips onto the loudspeaker, said dome being shaped and made from an elastic material such as silicone so as to adapt to the ear canal.

In a second embodiment of the invention, the endpiece is connected to the loudspeaker, placed in the electronic module inside the housing, by an acoustic tube in which the sound wave from said loudspeaker is propagated. .

According to another preferred embodiment of the invention, the housing is custom-made according to the shape of the ear, said housing is intended to be placed inside the ear canal and the ear shell. the way of an in-ear hearing aid. This configuration gives the listener greater discretion and better hold during physical activity, for example.

Advantageously, the housing comprises, on a face oriented towards the outside of the ear, a flap allowing access to the battery compartment and a rigid wire, in nylon for example, allowing the removal of said earpiece from the ear by a gesture. simple.

In an advantageous embodiment, the box has on a rear face of the distal shell a configurable control button allowing adjustments to be made between increasing and decreasing the sound volume, navigating through a list of audio tracks, changing listening program, changing the ratio between the signal from the wireless terminal and the signal from the microphone, and also allowing actions to be carried out by switching on / off the earpiece, activating / deactivating the Bluetooth chip, a playback / pause of the audio track played, a standby of the earpiece.

In accordance with a particularly advantageous characteristic, the central unit comprises, in addition to the Bluetooth chip, at least one analog-digital converter which converts the signal from the at least one microphone into a digital signal, a microprocessor which operates the processing, l amplification and mixing of different signals according to the algorithm implemented, a digital-analog converter which converts the digital signal at the output of said microprocessor before it enters the loudspeaker which then transforms it into a sound wave, and filters .

Advantageously, the earpiece includes an omnidirectional microphone, to pick up noises coming from all directions, and a directional microphone, to focus on sounds coming from privileged directions like the speech of a speaker located in front of the user by example.

Advantageously, the earpiece includes a wired connection terminal making it possible to carry out the settings of said earpiece on a computer using software.

According to a particularly advantageous characteristic, the earpiece is controlled using a dedicated application on a mobile device interface connected to the earpiece.

The fundamental concepts of the invention having just been exposed above in their most elementary form, other details and characteristics will emerge more clearly on reading the description which follows and with reference to the appended drawings, giving by way of 'nonlimiting example an embodiment of a wireless earphone according to the principles of the invention.

BRIEF DESCRIPTION OF THE FIGURES

The different drawings as well as the elements of the same drawing, are not necessarily represented on the same scale. Throughout the drawings, identical or similar elements bear the same reference.

It is thus illustrated in:

Fig. 1 is a perspective view of a wireless earbud type earpiece according to a first embodiment of the invention;

Fig. 2 has a perspective view of the electronic module contained in the box of the earphone of FIG. 1;

Fig. 2b a perspective view of the battery removed from the electronic module of FIG. 2a;

Fig. 3 is a perspective view of a wireless earbud type earpiece according to a second embodiment of the invention;

Fig. 4 a plan view of the electronic module of the earpiece of FIG. 3;

Fig. 5 is a perspective view of the receiver of FIG. 3, the battery drawer being open;

Fig. 6 an electronic diagram representing the main components of the earpiece according to the invention;

Fig. 7 a perspective view of an in-ear wireless earpiece according to a third embodiment of the invention;

Fig. 8 a perspective view of the earpiece of Figure 7 with the battery compartment cover open;

Fig. 9 a perspective view of the loudspeaker of the earpiece of FIG. 1 and of its connection cable;

Fig. 10 a perspective view of the dome of the earpiece tip of Figure 1; Figures 11a to 11d are some examples of domes seen from above according to the invention.

DETAILED DESCRIPTION OF EMBODIMENTS

FIG. 1 represents a wireless earpiece 100 according to a first embodiment of the invention, said earpiece is inspired by the shape of a hearing aid of behind-the-ear type such as the Pure hearing aid, registered trademark of Siemens . Such devices incorporate the most miniaturized hearing technologies. The earpiece 100 comprises in this a housing 110, containing an electronic module 140, shown in FIG. 2a, and formed by an assembly of two shells 111 and 112, an end piece 120 provided with a speaker-type output transducer , and an electric wire 130 connecting the nozzle to the housing.

According to the first embodiment, illustrated in Figures 1 and 2, the housing 110 is designed to be discreetly housed behind the roof of an ear of a wearer of the earpiece 100 at the occipital region, and comprises a proximal shell 111, intended to be in contact with the retro-auricular groove of the ear, and a distal shell 112 which is assembled with said proximal shell by interlocking via suitable means such as couples housing blocking block for example.

The housing 110, according to the first embodiment, comprises a button 113 preferably on a rear face of the distal shell 112 in order to allow the user easy access to said button. The button 113 serves both as a switch allowing the on / off of the earpiece 100 by a long press, for two seconds for example, and of command to play / pause a sound track by a press short. These functions are customizable and can be chosen as desired by the user.

The presence of the button 113 is not compulsory and the earpiece 100 may not include a control button.

In addition, the button 113 constitutes a cover which opens using a rod supplied with the device to allow access to a base 143 comprising an electrical contact of the button 113 and a connection port for a connector not shown. The connector is used to connect the earpiece 100 to a computer in order to make various settings via specialized software.

These settings are close to those made by an audioprosthetist and make it possible to refine the frequency calibration of the earpiece according to the hearing ability of the user.

The earpiece 100, according to the invention, is characterized in that it contains at least one microphone which picks up ambient sounds in order to allow the user listening to a sound track coming from a terminal connected to the earpiece , music for example, to hear ambient sounds with an adjustable sound level so as not to be completely isolated when using the earpiece in an urban setting for example requiring a minimum of vigilance.

Therefore, the housing 110 according to the first embodiment is provided with two microphone inputs, an omnidirectional microphone input 114a and a directional microphone input 114b.

The omnidirectional microphone input 114a is preferably located on the distal shell 112 so as to be slightly oriented towards the top of the user's head, this allows said omnidirectional microphone input to pick up the surrounding sounds without preferred direction in order to detect alerting sounds that may come from a source of danger not visible to the user.

The directional microphone input 114b is optional and makes it possible to pick up sounds coming from a preferred direction, it is for example located on a front end of the distal shell 112 so as to be oriented towards the front of the user once the earpiece is placed on his ear. This positioning allows the directional microphone input 114b to focus on the speech of an interlocutor in front of the user for example.

According to the first embodiment, illustrated in FIG. 1, the endpiece 120 of the earpiece 100 includes a speaker 121 and a dome 122 which clips onto said speaker.

The loudspeaker 121, according to the first embodiment illustrated in FIG. 9, comprises a coupling head 125 of spherical shape which clips into a central housing 124 of the dome 122 shown in FIG. 10. The dome 122 is a adapter, preferably made of silicone, which allows better retention of the speaker 121 inside the ear canal of the user.

In the first embodiment illustrated in Figures 1 and 10, the dome 122 has orifices 123 around its central housing 124 to allow ventilation of the ear canal. In the example illustrated in FIG. 9, the central housing 124 of the dome 122 comprises an upper membrane 126 which completely closes the output of the loudspeaker 121 situated at the level of the coupling head 125 of said loudspeaker, to avoid that earwax or sweat does not enter the speaker and cause damage.

This latter condition is however not required and the central housing 124 of the dome 122 may have holes 127 regularly distributed over the upper membrane of said central housing as illustrated in FIGS. 11a to 11d, the holes 127 being of small diameters so as to limit as much as possible the penetration of undesirable bodies and to be impermeable, by capillary action, to drops of sweat of sizes which can cause damage to the loudspeaker 121.

In addition, the dome 122 may have different diameters to correspond to more or less wide ear canals, as it may or may not be provided with orifices 123 as illustrated in the exemplary embodiments of FIGS. 11a to 11d.

The morphology of the dome also has certain acoustic advantages which can modify the sound quality, the orifices allow for example better transmission of the high frequencies.

In the first embodiment illustrated in Figures 1 and 9, the speaker 121 is connected to the electronic module 140 contained in the housing 110 by the electrical wire 130 which is connected to said electronic module via a connector 131. The electrical wire 130 comprises a conductive core 132, for example of copper, protected by an insulating sheath 133, for example of polyvinyl chloride.

The remote speaker in the earpiece tip according to this first embodiment makes it possible to dispense with acoustic tubes which generally have larger diameters than simple electric wires. However, the loudspeaker is more prone to humidity attacks, for example in the ear canal.

FIGS. 2a and 2b respectively represent the electronic module 140 and the supply battery 150 of the earpiece 100 according to the first embodiment.

The electronic module 140 comprises a battery compartment 141 in which the battery 150 is placed, the resulting assembly having a shape adapted to the interior volume of the housing 110 containing said module. The battery compartment 141 is provided with electrical contacts 142, each of said electrical contacts being connected to a terminal of the battery 150.

In the first embodiment illustrated in FIG. 2b, the battery 150 is rechargeable by induction, this makes it possible to recharge the earpiece 100 without having to remove the battery from its compartment. An induction charger, not shown, is supplied with the earpiece 100.

The electronic module 140, according to the first embodiment, comprises two microphone-type input transducers, an omnidirectional microphone 144a and a directional microphone 144b, each microphone being placed near the microphone input which corresponds to it in the housing.

110.

The omni-directional microphone 144a has a pressure sensor that vibrates with changes in pressure and responds the same way to sound waves regardless of their original directions.

The directional microphone 144b includes a pressure gradient sensor which does not vibrate when an acoustic wave arrives through said microphone, it is thus intended to pick up sound waves in a preferred direction.

The electronic module 140, shown diagrammatically in FIG. 6, comprises a central unit 145 grouping together the electronic components which mainly provide digital processing, amplification, mixing and transmission of the signals from the microphones and the Bluetooth terminal 500. The unit As such, the central unit 145 includes a Bluetooth chip 451, analog-digital converters 452, a microprocessor 453, digital-analog converters 454 and filters 455.

The Bluetooth 451 chip, in the form of a miniature printed circuit, allows the earpiece 100 to connect, with a given transmission power and range, to various multimedia devices such as a mobile phone, a computer, a tablet, a player. MP3, TV, and other audio sources compatible with the Bluetooth connection. The earpiece 100 then makes it possible to broadcast the sound coming from the peripheral 500 connected on the Bluetooth link.

The central unit 145 processes the signals from the microphones in order to reproduce the ambient sounds in the ear of the user in addition to the sound transmitted by the Bluetooth link, the said central unit operates a mixing of the signals, microphones and Bluetooth, to produce a single signal transmitted to speaker 121.

Analog-to-digital converters 452 convert the electrical signals from the microphones to digital signals which will then be processed by the microprocessor 453 of the central unit 145.

The 453 microprocessor analyzes, processes and amplifies the digital signal containing the ambient sound information from the microphones. At the output of the microprocessor, the digital signal processed and adapted passes through a digital-analog converter 454 to then be sent to the speaker 121 which is responsible for reconstructing and diffusing the acoustic signal in the ear canal of the user.

The microprocessor 453 can memorize a greater or lesser number of specific treatments and thereby conditions the performance of the earpiece 100. The specific calculations and treatments performed by the microprocessor of the central unit 145 are carried out from a algorithm memorized in said microprocessor and specially developed to perform treatments such as facilitating the location of speech in noise, promoting the emergence of speech in noise, reducing wind noise, reducing impact noise, reducing noise stable such as that of an engine when driving a vehicle for example, reducing echo or reverberation in large spaces, adjusting the compression gains of signal intensity, etc. These different treatments ensure optimal listening both to music from the Bluetooth terminal, for example, and to ambient noise picked up by the microphones.

Filters 455 can be used in the central unit 145 of the electronic module 140 in order to improve the quality of the sound signal by allowing the user to adjust the bandwidth as a function of the frequencies which he wishes to attenuate or accentuate.

This type of adjustment can be done using dedicated software by plugging the earpiece into a computer with a suitable connector which plugs into the base 143, as it can be easily done using an application for example installed on a telephone when said telephone is connected by Bluetooth to the earpiece 100.

FIG. 3 represents a wireless earpiece 200 of the behind-the-ear type according to a second embodiment of the invention, this embodiment differs mainly from the first embodiment described by the fact that the loudspeaker is not not placed in the tip but inside the housing and that the tip of said earpiece does not have a dome.

According to this second embodiment, illustrated in FIGS. 3, 4 and 5, the earpiece 200 comprises a housing 210, formed by a proximal shell 211 and a distal shell 212 and containing an electronic module 240, a nozzle 220, and a acoustic tube 230 connecting said tip to housing 210.

The proximal shell 211 and the distal shell 212 are shaped to be assembled by interlocking and thus form the housing 210. The housing 210 comprises a dimmer button 213, preferably on a rear face of the distal shell 212 so as to be easily accessible by the user, which allows for example to adjust the sound volume, to navigate in a list of audio tracks, or to change the listening program.

The housing 210 also includes a microphone input 214 and a charging contact 215 which makes it possible to recharge a rechargeable battery, not shown.

The electronic module 240, according to the second embodiment illustrated in FIG. 4, generally has the same elements as the electronic module described in the first embodiment, these elements are stored differently due to a more flat shape of the electronic module of the second embodiment.

The electronic module 240 has a battery location 241 in which there is a battery contact 242, an adjustment wheel 243, a microphone 244, a central unit 245, and a loudspeaker 246 connected to a connector 247.

The earpiece 200, according to this second embodiment, uses electric batteries of the button cell type. The housing 210 comprises a pivoting drawer 216, shown in FIG. 5, intended to accommodate the power supply battery of the earpiece, said drawer fits into a volume 217 between the two shells of the housing when it is closed, thus allowing for the battery to be in contact with the battery contact 242 of the electronic module 240.

The adjustment wheel 243 can either replace the dimmer button 213 and control the sound volume for example, or be in addition to it by allowing other types of adjustments such as increasing and decreasing the low frequencies for example.

The microphone 244 is preferably omnidirectional, a directional microphone not being necessary in this second embodiment thanks to the shape of the tip 220 which allows natural hearing as will be described later.

The central unit 245, according to the second embodiment, comprises the same elements as in the first embodiment, namely a Bluetooth chip 451, analog-digital converters 452, a microprocessor 453, a digital-analog converter 454, and at least one filter 455 as shown in the diagram in FIG. 6.

The analog signal output from the central unit 245 of the electronic module 240 enters the loudspeaker 246 included in said electronic module, this signal is then converted into a sound wave which propagates inside the acoustic tube 230 connected to the connector. 247 until reaching the tip 220 which diffuses said sound wave in the user's ear canal.

Due to the proximity between the speaker 246 and the microphone 244 in the electronic module 240 according to the second embodiment, a feedback filter can be used in order to reduce the feedback effect that can result from this proximity between the microphone and the speaker.

The acoustic tube 230 allows the sound to be transmitted to the ear by propagation of the sound wave in the air contained in said acoustic tube. The end piece 220 which is at the end of the acoustic tube constitutes a resonance cavity and has a diameter smaller than that of the ear canal of the user. This last characteristic allows the earpiece 200 to have a tip 220 suitable for all users without the need for customization, unlike the dome 122 of the earpiece 100 according to the first embodiment.

In addition, the small diameter of the tip 220 allows it not to block the ear canal of the user, thus leaving a sufficient opening for a natural hearing of the surrounding sounds which do not come from the earpiece 200. The need in directional microphone is then compensated by this natural hearing which allows at least to hear the voice of an interlocutor for which the directional microphone would have been necessary in the case of an auditory canal entirely blocked by a dome.

The configuration of the earpiece 200 according to the second embodiment makes it less sensitive to the damage that can be caused by sweat and earwax from the ear canal, in particular thanks to a speaker placed in the housing outside the ear canal and to a tip made entirely of plastic.

FIG. 7 represents a wireless earpiece 300 according to a third embodiment, the shape of the earpiece 300 is inspired by that of hearing aids of the in-ear type. The earpiece 300 is custom-made by an additive manufacturing process, such as 3D printing for example, from a digital scan of the user's ear and in particular a scan of his ear canal and his conch.

The earpiece 300 thus produced conforms to the shape of a part of the ear canal and fills the volume determined by the conch, thereby sealing off the user's ear for a much improved insulation compared to that provided by the earphones of the contour type. ear.

The earpiece 300, according to the third embodiment illustrated in Figures 7 and 8, comprises a housing 310 formed by a molded shell, an end piece 320 containing a speaker not visible in the figures, an electronic module not entirely shown comprising a central unit 345, the diagram of which is illustrated in FIG. 6, and a nylon wire 350 allowing the earpiece to be removed from the ear by a simple gesture using a head 351.

The housing 310 comprises, on a face oriented towards the outside of the ear, a microphone input 314, a flap 316 giving access to a battery compartment 341, and a support 318 on which said flap is pivotally mounted.

The battery compartment 341 of the earpiece 300 accommodates a battery, not shown, of the disposable button cell type for example, placed between two electrical contacts, a positive contact 342a and a negative contact 342b, which supplies the electronic module of the earpiece.

The volume of the in-ear earpiece 300, relatively low compared to that of an behind-the-ear earpiece, does not prevent it from integrating all the electronic components necessary for operation similar to that of the other earphones described in the first two embodiments.

In other alternative embodiments not shown, the earpiece can have different shapes and sizes provided that it fulfills all the functions described in the present invention. The earpiece can for example be deep in-ear, that is to say can be fully housed in the ear canal of the user by being provided with a micro-button battery.

The wireless headphones object of the present invention can be controlled by an application specifically developed for mobile devices such as smartphones, tablets and MP3 players, or directly controlled by multimedia applications already installed on these devices. In the second case, these commands only concern navigation in the audio tracks, play / pause, adjust the volume, etc. The physical settings of the headphones, such as the modification of the listening programs, require the specific application.

In addition, a microphone for reproducing the ambient noise of a headset according to the invention can be configured to change the function and make it possible to answer the telephone when the user receives a telephone call, said microphone then transmitting the voice of the user. to his interlocutor via the telephone without reproducing said voice in the ear of the user.

Claims (13)

1. Wireless earpiece (100, 200, 300), making it possible to broadcast in the ear, in which said earpiece is placed, a sound coming from a device (500) connected to the earpiece by a wireless sound link, comprising a housing (110, 210, 310), a loudspeaker (121, 246), a central processing unit (145, 245, 345) for processing and transmitting the signal provided with a chip (451) capable of communicating according to a wireless local communication protocol, and a battery (150), said earphone being characterized in that it comprises at least one microphone (144a, 144b, 244, 344) allowing it to reproduce the ambient sounds in the ear of the user, said microphone being placed inside said housing. 2. Headphone according to claim 1, wherein the chip (451) capable of communicating according to a local wireless communication protocol is a Bluetooth chip. 3. Headphone according to claim 2, wherein the housing (110, 210, 310) contains an electronic module (140, 240) comprising at least one microphone (144a, 144b, 244, 344), the central unit ( 145, 245, 345) and a battery compartment (141, 241, 341) in which the battery (150) is placed. 4. Headphone according to claim 3, wherein the housing (110, 210) is formed by an assembly of a proximal shell (111,211) and a distal shell (112, 212), fitting one into the other, said casing being intended to be placed behind the pavilion of the ear in the manner of a hearing aid behind the ear, said earpiece comprising a tip (120, 220) which is placed inside the ear canal of the ear. 5. Headphone according to claim 4, wherein the tip (120) is connected to the electronic module (140, 240) contained in the housing (110, 210) by an electric wire (130), the speaker (121) said earpiece being offset in said tip. 6. Headphone according to claim 5, wherein the tip (120) comprises a dome (122) which clips onto the speaker (121), said dome being shaped and made of an elastic material so as to adapt to the ear canal. 7. Headphone according to claim 4, in the endpiece (220) is connected to the speaker (246), placed in the electronic module (240) inside the housing (210), by an acoustic tube (230) in which propagates the sound wave from said speaker. 8. Headphone according to claim 3, wherein the housing (310) is custom made according to the shape of the ear, said housing is intended to be placed inside the ear canal and the conch of the ear like an in-ear hearing aid. 9. Headphone according to claim 8, wherein the housing (310) comprises, on a face oriented towards the outside of the ear, a flap (316) allowing access to the battery compartment (341) and a wire (350 ) rigid allowing the removal of said earpiece from the ear. 10. A headphone according to claim 4, in which the housing (110, 210) comprises on a rear face of the distal shell (112, 212) a configurable control button (113, 213) allowing adjustments to be made among the increase and decreasing the volume, navigating through a list of audio tracks, changing the listening program, changing the ratio between the signal from the wireless terminal and the signal from the microphone (144a, 144b, 244), and also making it possible to perform actions among turning on / off the earpiece, activating / deactivating the Bluetooth chip, playing / pausing the audio track played, putting the earpiece in standby. 11. Headphone according to claim 2, in which the central unit (145, 245, 5,345) comprises, in addition to the Bluetooth chip, at least one analog-digital converter (452) which converts the signal from the at least one microphone into a digital signal, a microprocessor (453) which operates the processing, the amplification and mixing of the different signals according to the implemented algorithm, a digital-to-analog converter which 10 converts the digital signal at the output of said microprocessor before it enters the loudspeaker which then transforms it into a sound wave, and filters (455). 12. Headphone according to any one of the preceding claims, 15 comprising a wired connection terminal making it possible to configure the settings of said earpiece on a computer using software. 13. Headphone according to any one of the preceding claims, said headphone being controlled using a dedicated application on a 20 interface of a portable device connected to the earpiece. 1/5