Earbud system for receiving magnetic field signal to generate acoustic signal

Abstract

Disclosed is an earbud system (100, 500) for receiving magnetic field signal to generate acoustic signal for user to hear when the earbud system is used by the user. The earbud system comprises a pair of earbuds (100A,502), each comprising: elongated hollow tube (102) adapted to be at least partly inserted into the user's ear canal and external chamber (104) arranged perpendicular to the elongated hollow tube. The external chamber comprises: magnet(s) (106, 202) configured to receive magnetic field signal produced by external amplification unit (300, 504) communicably coupled to the earbud, and to experience force generated by interaction of magnetic field generated by the magnet(s) with magnetic field signal, wherein the magnet(s) is configured to undergo corresponding movement as a result of the force; coupling arrangement (108, 200) for converting the corresponding movement mechanically into corresponding levered movement; and flexible diaphragm (110, 204) configured to receive the levered movement correspondingly deflecting the flexible diaphragm to generate the corresponding acoustic signal for the user to hear.

Description

[0001] EARBUD SYSTEM FOR RECEIVING MAGNETIC FIELD SIGNAL TO GENERATE ACOUSTIC SIGNAL

[0002] TECHNICAL FIELD

[0003] The present disclosure relates to earbud systems for receiving magnetic field signals to generate acoustic signals for users to hear when the earbud systems are used by the users.

[0004] BACKGROUND

[0005] Sleep disorders are typically caused by various physiological variables (biological clock dysfunctionality, tinnitus, ADHD and such other conditions) and / or environment variables (snoring partner, loud neighbourhood, and so on). Notably, the sleep disorders negatively impact a person's ability to get restful and restorative sleep, and result in various health conditions. To mitigate sleep disorders, contrary to medical treatment for extreme cases, many people suffering from sleep disorder prefers sleep assisting devices such as earplugs. However, conventional earplugs, when worn (namely, in use or used by the user) during sleep, fail to mitigate disturbing noises adequately, for example in case of ambient noise pollution, or noise of a snoring partner. Typically, such earplugs can only attenuate between 30 and 34 decibels (dB) of sound. Additionally, users suffering from tinnitus or ADHD are unable to obtain relief from conventional earplugs as the disturbing noises is not abated by the mere mechanical blocking of the ear canal.

[0006] In order to improve upon the efficacy of an earplug in such circumstances, a user may get relief from an earbud, being an earplug that also contains a micro-speaker arranged to deliver audio through the earplug. Conventional earbuds which may be used for such cases, typically include:

[0007] (i) wired earbuds, wherein a wire connects the speakers of the earbuds to an audio source, such as a smartphone, a music player;

[0008] (ii) partially wired earbuds, wherein a wired connection connects a pair of earbuds to each other and a battery, but the audio source is connected wirelessly; or

[0009] (iii) true wireless earbuds (TWEs), wherein the pair of earbuds can operate independently and are wirelessly connected to each other and the audio source.

[0010] Such users may need to use conventional earbuds beneficially adapted to play a sound (such as rainfall, ocean waves, etc.) or music to adequately mask any remaining ambient noise and allow user to sleep. However, such conventional earbuds require constant power supply such as from a battery, in order to continuously play the sound. It may happen that battery power may completely run out during use, thereby such conventional earbuds require repetitive charging. Additionally, repetitive cycle of complete discharging and charging causes the battery of the conventional earbuds to degrade over time. In conventional earbuds, once the battery performance is downgraded, such earbuds become obsolete and need replacement. This is costly and inefficient, and negatively affects sustainability practices. Also, such conventional earbuds are prone to over-heating due to constant charging.

[0011] Moreover, use of wired earbuds or partially wired earbuds may cause discomfort and may be unsafe for users during sleep as their wires may become entangled around the user's neck. Moreover, entangling of the wires may also lead to breaking of the wires. It may be appreciated that wireless earbuds (such as TWE) are operable via a Bluetooth® receiver, an audio amplifier, a battery and a speaker, arranged therein to wirelessly receive an input signal from the audio source. However, inclusion of aforementioned components within the earbuds leads to major technical disadvantages such as, larger size of the earbuds causing discomfort to users when such earbuds are worn (in use) by the user. It will be appreciated that as per a clinical study by the Sleep Foundation about 92% of users sleep on their side with their ear pressed against the pillow, in such case their earbud becomes forced into their ear channel and press against ear pinnae, causing discomfort.

[0012] Furthermore, when wireless earbuds are miniaturized, their batteries are correspondingly miniaturized and exhibit a short battery operating life when in use. This may also result in the audio ceasing and the user may wake up again by disturbances in their environment. Furthermore, such earbuds are prone to operational failure as the battery performance may degrade over time.

[0013] Therefore, in light of the foregoing discussion, there exists a need to overcome the aforementioned drawbacks.

[0014] SUMMARY

[0015] The aim of the present disclosure is to provide an earbud system effectively capable of ambient noise mitigation while addressing limited battery life and compromised comfort to users. The aim of the present disclosure is achieved by an earbud system for receiving a magnetic field signal to generate an acoustic signal for a user to hear when the earbud system is worn used by the user as defined in the appended independent claims to which reference is made to. Advantageous features are set out in the appended dependent claims.

[0016] Throughout the description and claims of this specification, the words "comprise" , "include", "have", and "contain" and variations of these words, for example "comprising" and "comprises" , mean "including but not limited to" , and do not exclude other components, items, integers or steps not explicitly disclosed also to be present. Moreover, the singular encompasses the plural unless the context otherwise requires. In particular, where the indefinite article is used, the specification is to be understood as contemplating plurality as well as singularity, unless the context requires otherwise.

[0017] BRIEF DESCRIPTION OF THE DRAWINGS

[0018] FIGs. 1A, IB, and 1C are exploded views of schematic illustrations of an earbud system for receiving a magnetic field signal to generate an acoustic signal for a user to hear when the earbud system is worn used by the user, in accordance with an embodiment of the present disclosure;

[0019] FIGs. 2A, 2B and 2C, are schematic illustrations of a coupling arrangement, in accordance with an embodiment of the present disclosure;

[0020] FIG. 3 is an illustration of an external amplification unit, in accordance with an embodiment of the present disclosure;

[0021] FIG. 4 is an illustration of a transmission coil, in accordance with an embodiment of the present disclosure;

[0022] FIGs. 5A, 5B, and 5C, are schematic illustrations of implementations of an earbud system, in accordance with an embodiment of the present disclosure;

[0023] FIG. 6A illustrates an exploded view of an earbud system, in accordance with an embodiment of the present disclosure; and

[0024] FIGs. 6B and 6C illustrate schematic illustrations depicting perspective views of the earbud system of FIG. 6A, in accordance with an embodiment of the present disclosure. DETAILED DESCRIPTION OF EMBODIMENTS

[0025] The following detailed description illustrates embodiments of the present disclosure and ways in which they can be implemented.

[0026] In a first aspect, the present disclosure provides an earbud system for receiving a magnetic field signal to generate an acoustic signal for a user to hear when the earbud system is used by the user, the earbud system comprising : a pair of earbuds, each earbud comprising : an elongated hollow tube adapted to be at least partly inserted into the user's ear canal; and an external chamber arranged angularly to the elongated hollow tube, the external chamber comprising : at least one magnet configured to receive the magnetic field signal produced by an external amplification unit communicably coupled to the earbud, and to experience a force generated by an interaction of a magnetic field generated by the at least one magnet with the magnetic field signal, wherein the at least one magnet is configured to undergo a corresponding movement as a result of the force; a coupling arrangement for converting the corresponding movement mechanically into a corresponding levered movement; and a flexible diaphragm configured to receive the levered movement correspondingly deflecting the flexible diaphragm to generate the corresponding acoustic signal for the user to hear when the earbud system is used by the user.

[0027] The aforementioned earbud system comprising the pair of earbuds is beneficially designed to enhance the user comfort when in use. In this regard, the pair of earbuds are operable to generate acoustic signal with principle of converting a force generated due to electromagnetic interaction, into a mechanical movement of a speaker diaphragm. The aforementioned pair of earbuds have no inbuilt coil or other electrically powered components. Moreover, the absence of the in-built electrical components eliminates the need for any inbuilt power source, such as a battery to operate a Bluetooth® receiver, an audio amplifier, and a conventional speaker. Thus, the earbuds of the present disclosure are adapted to operate indefinitely without any need to charge and thus are not subjected to any heating effect, as with conventional earbuds. Therefore, the earbuds are compact, lightweight, and cost efficient. Moreover, beneficially, the pair of earbuds may be manufactured in a compact and ergonomic design to fit inside an ear canal of an ear of the user, making it comfortable for the user to use during sleep, including when the user is sleeping on their side.

[0028] Throughout the disclosure, the term "earbud system" refers to a transmission arrangement configured to receive an input from an input source via the external amplification unit and to relay the input received to the user, when in use, via the pair of earbuds. The term "user" as used herein refers to a person using the earbud system and wearing the pair of earbuds to remotely receive an input from an input source. The term "input" as used herein refers to an audio input such as a voice call, a song, a music or sound, or any such input. The term "input source" as used herein refers to a communication system capable of transmitting the input, such as a handheld mobile device, a computer, a tablet, a smartphone, portable music players, wearable devices, MP3 players, Bluetooth® devices, smart-speakers, Bluetooth® audio transmitters or any such device.

[0029] Throughout the disclosure, the term "external amplification unit" refers to one of external units of the earbud system, capable of forming a connection with the input source to remotely receive the input. The external amplification unit is communicably coupled to the pair of earbuds and configured to convert the received input therefrom into the magnetic field signal to electromagnetically excite the pair of earbuds. In other words, during operation, the external amplification unit is configured to receive the input, to produce the magnetic field signal based on the input received, and subsequently to relay the magnetic field signal generated to the pair of earbuds to recreate the received input as an acoustic signal. It may be appreciated that the earbud system is configured to receive the input at the external amplification unit communicably coupled to the pair of earbuds. The term "acoustic signal" as used herein refers to a sound that is generated by the earbud system replicating the input received.

[0030] Throughout the disclosure, the term "earbud" refers to a single earbud or preferably a pair of earbuds, which is implemented as a true wireless earbud, configured to block an ambient noise as well as allow the user to hear a sound from an external input (audio) source. It may be appreciated that when the earbud(s) is in use, i.e., worn by the user, but does not receive a sound from the external input (audio) source, then the earbud(s) may serve as an earplug or an ear protection device (such as during sleep). In this regard, each earbud from amongst the pair of earbuds can operate independently while being wirelessly coupled to the external amplification unit. For example, two users in a bed using two pair of earbuds will hear input (audio) in all four earbuds, wherein the two pair of earbuds coupled to a single external amplification unit arranged behind a headboard of the bed. The same would apply for any number of earbuds within a range of the magnetic field signal generated by the external amplification unit. Preferably, the pair of earbuds is configured to generate acoustic signal for the user to hear, when worn or when the earbud(s) is in use. Preferably, the pair of earbuds is configured to be worn by the user, at least partially within the user's ear canal. In this regard, the elongated hollow tube of each earbud of the pair of earbud, is adapted to be at least partly inserted into the user's ear canal, when in use. The elongated hollow tube is typically made up of skin-friendly material such as clinical silicone, polyurethane, thermoplastic polyurethane (TPU), hydrogels, any such material with or without soft polymer coatings, and which exhibits biocompatibility, flexibility, minimum skin irritation when worn, thus, ensuring comfort of the user while wearing the earbud. Optionally, the elongated hollow tube has a length in a range of 6 to 16 mm, preferably 12 mm. Optionally, the length of the elongated hollow tube may be from 6, 6.5, 7, 7.5, 8, 8.5, 9, 9.5, 10, 10.5, 11, 11.5, 12, 12.5, 13, 13.5, 14,

[0031] 14.5, 15 or 15.5 mm up to 7, 7.5, 8, 8.5, 9, 9.5, 10, 10.5, 11, 11.5, 12,

[0032] 12.5, 13, 13.5, 14, 14.5, 15, 15.5 or 16 mm. It may be appreciated that the elongated hollow tube allows the earbud to snuggly fit into the user's ear canal without a risk of slipping off while tossing and turning during sleep. Moreover, the elongated hollow tube is configured to carry the acoustic signal generated in the external chamber of the earbud which is arranged angularly to the elongated hollow tube. In this regard, the external chamber is configured to retain magnetic components of the earbud outside the user's ear canal. The at least one magnet arranged within the external chamber is configured to receive the magnetic field signal relayed by the external amplification unit via a transmission (TX) coil. It may be appreciated that the external chamber may be shaped as a circular, oval, blunt or arc-edged rectangular or squared structure. Furthermore, the external chamber is made up of skin friendly material to ensure comfort of the user. It may be appreciated that the external chamber is arranged angularly to the elongated hollow tube for allowing an acoustic generation mechanism of sufficient size to be housed therein which is adapted (or designed) to receive the magnetic field signal generated and move with enough force to provide good volume whilst retaining an ergonomic design comfortable for the user.

[0033] Throughout the disclosure, the term "at least one magnet" refers to a permanent magnet, an electromagnet, and so on, having a magnetic polarity and capable of exhibiting a magnetic field of its own.

[0034] Throughout the disclosure, the term "magnetic field signal" refers to a detectable influence experienced by the at least one magnet. The magnetic field signal is generated by the external amplification unit utilizing a magnetic field arrangement, for example but not limited to, a magnetic coil, a solenoid, an electromagnet, a permanent magnet, a toroid. Upon receiving the input, the external amplification unit is configured to trigger the magnetic field arrangement, namely a transmission coil, is triggered to generate the magnetic field signal and transmit the said magnetic field signal to the earbud.

[0035] Moreover, the magnetic field of the at least one magnet is exposed to the magnetic field signal generated by the external amplification unit, when the earbud comes within a range of the magnetic field signal. It may be appreciated that an interaction between two different magnetic fields, namely the magnetic field generated by the at least one magnet and the magnetic field signal generated by the external amplification unit, results in generation of a force which causes the at least one magnet to experience the corresponding movement.

[0036] In this regard, it may be appreciated that the term "corresponding movement" refers to a vibration, a to-and-fro movement, a back-and- forth movement, or any such movement which is caused by the interaction between the two different magnetic fields, namely the magnetic field of the at least one magnet and the magnetic field signal received. It may be appreciated that the generated corresponding movement varies according to the magnetic field signal received. Furthermore, the at least one magnet is communicably connected to the coupling arrangement. The term "coupling arrangement" as used herein refers to an arrangement comprising parts communicably coupled with each other and that work in a coordinated (or collaborative) manner to relay a movement from the at least one magnet. The coupling arrangement is configured to convert the corresponding movement of the at least one magnet mechanically into a corresponding levered movement. Optionally, the coupling arrangement may comprise a lever, a beam, a shaft, a rod, or any such suitable arrangement, pivoted to at least one fixed point, to move about in a specific manner. It may be appreciated that the coupling arrangement may also refer to a spring-like means, cascaded movement means, or any such suitable means capable of transferring a movement accurately without any significant loss. The term "levered movement" as used herein refers to a collaborative movement of the coupling arrangement with respect to a fulcrum, which correspondingly is transferred to the flexible diaphragm.

[0037] Furthermore, the coupling arrangement is linked with the flexible diaphragm of the earbud. The term "flexible diaphragm" as used herein refers to a membrane that is made up of an elastic material which is capable of elastically flexing to experience vibrations or movements thereon, based on the levered movement caused by the coupling arrangement. The flexible diaphragm is configured to move based on the corresponding levered movement for recreating the input received, such as an audio file which is to be played. In other words, the flexible diaphragm is moved in order to generate the corresponding acoustic signal as received from the input source, for the user to hear when the earbud is in use.

[0038] Optionally, the at least one magnet is configured to be suspended along at a least a portion of its periphery onto the flexible diaphragm. In this regard, the at least one magnet is arranged in a flexible manner by being partially or fully suspended allowing the at least one magnet to move freely upon receiving the magnetic field signal. The term "at least a portion" as used herein refers to a part of an outer part or an edge part of a surface of the at least one magnet. The at least one portion of the at least one magnet is attached, linked, connected, coupled to the compliant mounting arrangement by means of an adhesive, an attachment means, connector, coupling means, or any such suitable means.

[0039] Optionally, the at least one magnet may be suspended along at a least a portion of its periphery onto the flexible diaphragm via a compliant mounting arrangement. The term "compliant mounting arrangement" as used herein refers to a flexible setup to allow at least one component of the earbud and / or the wearable part of the earbud system, such as the at least one magnet, mounted thereon, to move based on the interaction between the magnetic field generated by the at least one magnet and the magnetic field signal. A technical effect of such arrangement (i.e., suspending the at least one magnet along at least one portion of its periphery) is achieving an efficient mechanical stress distribution when the at least one magnet experiences the corresponding movement, thereby improving longevity as well as performance of the at least one magnet.

[0040] Optionally, the flexible diaphragm is configured to be suspended along at a least a portion of its periphery onto the external chamber. In this regard, the flexible diaphragm is allowed to move corresponding to the movement of the at least one magnet. The flexible diaphragm is suspended around at the least a portion of its periphery on to the external chamber, thereby securing the flexible diaphragm within the external chamber while obtaining a degree of freedom to move about according to the corresponding levered movement. The term "at least a portion" as used herein refers to an outer part or an edge part of a surface of the flexible diaphragm. The at least one portion of the flexible diaphragm is attached, linked, connected, coupled to the compliant mounting arrangement by means of an adhesive, welding, soldering, an attachment means, connector, coupling means, or any such suitable means. A technical effect is achieving noise free and clear audio quality due to distortion free movement of the flexible diaphragm.

[0041] Optionally, the coupling arrangement is implemented as a flexible lever arm coupled to at least one push rod, wherein the flexible lever arm is configured to host the at least one magnet, and the at least one push rod is coupled to the flexible diaphragm for transferring the levered movement thereto. In this regard, the flexible lever arm is configured to host the at least one magnet and to move according to the corresponding movement of the at least one magnet. The flexible lever arm may be made up of flexible, elastic, or compliant materials, for example, graphene, hexagonal boron nitride, molybdenum disulfide, tungsten disulfide, germanene, phosphorene, carbon nanotube sheets, and such materials, or a suitable combination thereof. The at least one push rod coupled to the flexible lever arm transfers the levered movement of the flexible lever arm to the flexible diaphragm to induce a movement thereof. It may be appreciated that movement of the flexible diaphragm generates the acoustic signal which is heard by the user. A technical effect is by such passive arrangement of transferring movement unnecessary vibrations may be avoided thereby eliminating noises and muffling sound in the acoustic signal generated.

[0042] Optionally, the coupling arrangement is implemented as: a magnet mounting diaphragm having the at least one magnet mounted thereon, wherein the magnet mounting diaphragm is configured to move corresponding to the movement of the at least one magnet; a flexible lever arm suspended along at a least a portion of its length onto the external chamber; a first push rod coupled to the magnet mounting diaphragm and facing the flexible lever arm; and a second push rod coupled to the flexible lever arm and facing the flexible diaphragm, wherein, the magnet mounting diaphragm motivates the first push rod to activate the flexible lever arm which in turn activates the second push rod to transfer the levered movement to the flexible diaphragm.

[0043] In this regard, optionally, alternatively, the coupling arrangement is implemented as the magnet mounting diaphragm hosting the at least one magnet thereon, configured to transfer the corresponding movement of the at least one magnet to the flexible diaphragm via the first push rod, the flexible lever arm, and the second push rod. Optionally, the magnet mounting diaphragm is arranged within the external chamber of the earbud. Optionally, the magnet mounting diaphragm may be supported by a compliant arrangement inside the external chamber. It may be appreciated that the magnet mounting diaphragm moves when the magnetic interaction occurs at the at least one magnet. Notably, the said movement is for example, a to-and-fro, a back-and-forth, or an up-and- down movement. The flexible lever arm is suspended along at a least a portion of its length onto the external chamber to be structurally bound thereby ensuring stability and accurate transfer of movement from the magnet mounting diaphragm. The first push rod coupled to the magnet mounting diaphragm relays the movement to the flexible lever arm which is configured to drive the second push rod into subsequently introduce movement in the flexible diaphragm to produce a sound. The technical advantages are improved tuning adjustment to refine the acoustic signal generated, and reduction in unwanted vibration within the external chamber thereby avoiding noises and muffling sound in the output (i.e., acoustic signal).

[0044] Optionally, the coupling arrangement is implemented by mounting the at least one magnet onto a peripheral region of the flexible diaphragm, wherein an edge of the flexible diaphragm is configured to function as a fulcrum for converting the corresponding movement mechanically into the corresponding levered movement in a central region of the flexible diaphragm. The at least one magnet arranged on the peripheral region of the flexible diaphragm, when experiences corresponding movement (due to magnetic interaction with the magnetic field signal) causes a central region of the flexible diaphragm to be flexed as per corresponding levered movement. The peripheral region of the flexible diaphragm is further attached to the external chamber. Optionally, the flexible diaphragm is arranged in a slot provided in the external chamber, such that the flexible diaphragm is suspended along an inner periphery of the external chamber. It may be appreciated that the flexible diaphragm works as a point of fixation namely, the fulcrum from where a transfer of movement happens. Optionally, such coupling arrangement allows direct mounting of the at least one magnet atop the peripheral region of the flexible diaphragm, thus, providing a simple and effective coupling between the at least one magnet and the flexible diaphragm. Herein, when the at least one magnet experiences the corresponding movement due to interaction with the received magnetic field signal, the said movement is transferred to the flexible diaphragm, more specifically to the central region of the flexible diaphragm. It may be appreciated that, by varying a position of attachment of the at least one magnet, the movement in the flexible diaphragm may be regulated, thereby, regulating the quality of the acoustic signal generated by the flexible diaphragm. A technical effect of mounting the at least one magnet on the peripheral region of the flexible diaphragm is elimination of any surface contact friction which may cause noise or unwanted vibration, resulting from an arrangement of the at least one magnet on a guide instead. Optionally, the plurality of magnets are arranged on the flexible diaphragm so that the flexible diaphragm has a fundamental mode of movement (namely, flexing in and out, when in use), as well as higher modes of movement wherein certain portions of the flexible diaphragm move in antiphase with other portion of the flexible diaphragm, thereby enabling a frequency response of the earbud to be tailored to specific user requirements (for example, for providing enhanced high frequency rendition of the input).

[0045] Optionally, the coupling arrangement is implemented as a hydraulic coupling using a liquid as a coupling medium. In this regard, the coupling arrangement may utilize hydraulic means to transmit movement from the at least one magnet, moving due to interaction between the magnetic fields, via at least one of: a shaft, lever, beam, or shaft, whose movement is regulated utilizing the liquid as the coupling medium. It may be appreciated that the liquid which is used as the coupling medium refers to a hydraulic fluid. The hydraulic fluid may be selected from at least one of: mineral oils, synthetic oils, water-glycol fluid, phosphate ester fluids. The hydraulic fluid is selected based on its properties, such as, viscosity, lubricity, thermal stability, and anti-foaming properties. A technical effect of using the hydraulic coupling is smooth transmission of force from the at least one magnet to the flexible diaphragm. Another technical advantage is to provide protection to the flexible diaphragm and other components of the earbud system from arbitrary sock, and torsional vibrations.

[0046] Optionally, the at least one magnet is implemented using at least one of: one or more neodymium magnets, one or more ferrite magnets. In this regard, the at least one magnet is implemented using at least one of: one or more neodymium magnets, one or more ferrite magnets. In this regard, the at least one magnet may be a rare-earth magnet made from an alloy of neodymium (Nd), iron (Fe), and boron (B), namely, NdFeB, NIB, or Neo magnets. In an implementation, a N55 grade, neodymium magnet with North / South poles on the flat sides of the at least one magnet, are used as a diaphragm. Moreover, the at least one magnet may be a permanent magnet made from a composite of iron oxide and one or more metallic elements such as barium, manganese, nickel, or zinc. A technical effect is high magnetic strength of the at least one magnet allows enhancement of audio quality and thereby enhancing acoustic experience of the user. Moreover, use of such at least one magnet allows the earbud system to be constructed in compact and ergonomic manner that snugly fits into the at least one ear of the user, thus improving user experience.

[0047] Optionally, at least one component part of the earbud system is manufactured from at least one of: injection-moulded plastics materials; stamped, laser-cut or etched metal sheet; 3-D printed plastics material components. In this regard, such materials can be easily moulded, shaped as per requirement, are skin friendly, durable, economically accessible for mass production, thereby optimizing resource utilization during manufacturing.

[0048] Optionally, at least flexible component the earbud system is fabricated from at least one of: a metal sheet, a flexible plastics material, a graphene sheet, a silicon micromachined membrane. Such materials demonstrate flexibility, easily shaped into a thin sheet form, recreate movement accurately with minimized loss, thereby, enhancing quality of conversion into acoustic signal from the movement of the at least one magnet, preferably attached to the flexible diaphragm via the coupling arrangement. A technical effect is enhanced quality acoustic signal generated.

[0049] Optionally, the earbud is configured to be worn during sleep of the user, to provide the user with a noise signal for mitigating effects of tinnitus. In this regard, in an implementation, the pair of earbuds is configured to be worn during a sleeping posture of the user without being susceptible to repeated dropping. The earbud system is configured to generate white noise which may counteract the surrounding noise, and effect of tinnitus i.e., ringing noise in the at least one ear experienced by the user due to physiological issues. Optionally, the earbud is implemented as a planar assembly that is configured in use to have its principal plane substantially parallel to side surfaces of the user's head, wherein at least a portion of the pair of earbuds is accommodated within at least one ear canal of the user. In this regard, the term "planar assembly" as used herein refers to an assembly of components arranged in a plane at least partly parallel to a plane of side surfaces of the user's head. The term "side surface" as used herein refers to a temporal region, a parietal region, or an auricular region of the head. In this regard, optionally, the earbud system, preferably, is positioned along (or parallel to) the auricular region of the head of the user. The term "auricular region" refers to an area around the at least one ear, which includes an external part of the at least one ear namely, pinna and an entrance to the ear canal.

[0050] Optionally, the elongated hollow tube of the earbud is at least partly arranged in the ear canal, such that at least a part of the length of the elongated hollow tube is inside the ear canal, when the earbud is in use. It may be appreciated that at least 25-100% of the length of the elongated hollow tube is inside the ear canal. For example, a length of 10 mm of the elongated hollow tube is inside the ear canal. In this regard, optionally the elongated hollow tube of each earbud may be positioned partially or fully inside of the at least one ear of the user. A technical effect is snug fit in the of the user when the earbud is worn, thereby cancelling noises, and enhancing user experience.

[0051] Optionally, the angle of angular arrangement of the elongated hollow tube with respect to the external chamber is in a range of 17-20 degrees. In an example, the angle between the elongated hollow tube and the external chamber is in a range of 17, 17.5, 18, 18.5, 19 or 19.5 degrees up to 17.5, 18, 18.5, 19, 19.5 or 20 degrees. A technical field of having range of angles between the elongated hollow tube and the external chamber is to adapt the same earbud to be used for different types and sizes of ears. It may be appreciated that for use by two users, the flanged tips may be changed or cleaned prior to use by the latter user.

[0052] Optionally, alternatively, the external chamber is arranged perpendicular to the elongated hollow tube. In other words, the angle between the elongated hollow tube and the external chamber is 90 degrees.

[0053] Optionally, the earbud system comprises a ball-socket arrangement between the elongated hollow tube and the external chamber to arrange the external chamber angularly (including perpendicularly) to the elongated hollow tube. A technical field of having a ball-socket arrangement is a higher degree of freedom between the elongated hollow tube and the external chamber to adapt to different types and sizes of ears.

[0054] Optionally, the earbud system comprises a flanged tip adapted to fit at least partially over the elongated hollow tube of each earbud of the pair of earbuds, wherein the flanged tip fitted at least partially over the elongated hollow tube is configured to form a seal in the user's ear canal when the earbud is worn by the user. In this regard, the flanged tip is made up of a skin-friendly, elastic material having shape memory capability, preferably. For example, the flanged tip may be made up of silicone-based shape memory polymers (SMPs), polyurethane SMPs and biodegradable polymers. Moreover, the flanged tip is fixed at least partially on the elongated hollow tube of the earbud, which is configured to be at least partly inserted into the user's ear canal. The flanged tip forms a seal allowing mitigation of ambient noise. Furthermore, the flanged tip may be fixed on the elongated hollow tube by means of a glue, adhesive material, thermal compression, or any such suitable means. It may be appreciated that the flanged ear canal tip of varying size can be fitted over the elongated hollow tube so that a perfect seal can be formed in the user's ear canal whilst maintaining user comfort. Optionally, a length of the flanged tip is in a range of 5 to 10 mm. For example, a length of 8 mm of the elongated hollow tube having an 8 mm flanged tip thereof is inside the ear canal to snuggly fit around the entrance of the ear canal. The technical effect is enclosing the user's ear canal while ensuring comfort thus enabling noise mitigation.

[0055] Optionally, the earbud system comprises the external amplification unit, wherein the external amplification unit, communicably coupled to the earbud, is configured to receive an input from an input source and to generate the corresponding magnetic field signal. In this regard, the external amplification unit includes receiving means such as a Bluetooth® receiver therein which enables the external amplification unit to be connected to the input source for receiving the input which may be an audio. The external amplification unit further generates an electrical signal corresponding to the input received. For example, the external amplification unit generates electrical signal of varying amplitude or frequency with respect to an amplitude or a frequency of the input which may be a sound wave. The technical effect is adaptability to recreate the sound wave as an electrical signal for easy manipulation of the magnetic field signal sent to the pair of earbuds communicably connected to the external amplification unit.

[0056] Optionally, the external amplification unit is coupled to a transmission coil to generate magnetic field signal. In this regard, the external amplification unit is configured to transmit the electrical signal generated corresponding to the input received, in order to modulate / modify the magnetic field signal and to excite the at least one magnet within the pair of earbuds to generate acoustic signal subsequently. It may be appreciated that the transmission coil may refer to an arrangement of coiled metallic wires that generate magnetic field signal when an excitation such as an electrical energy, or an electromagnetic energy is supplied to them. For example, the transmission coil may be a solenoid or a flat planar coil that is at least partially magnetically coupled to the at least one magnet of the earbud. A technical effect is provision for adjustment of a signal strength of the magnetic field signal, thereby, adjusting the interaction between the magnetic field signal and the magnetic field of the at least one magnet to subsequent accurate reproduction of the acoustic signal based on the input from the input source.

[0057] Optionally, the earbud system comprises a battery unit, operatively coupled to the amplification unit. In this regard, the external battery unit is configured to transfer power to the amplification unit. The technical advantage is enabling construction of an earbud system which can be used independently of mains power in places where no mains power is available, such as when camping or on a beach. Where the pair of earbuds are free of needing battery unit therewithin, while meeting necessary power requirement to operate the various electrical and magnetic arrangements for receiving input, transmitting the input to the pair of earbuds and adjusting volume.

[0058] Furthermore, optionally, the external amplification unit may include a volume adjustment means therewithin which can be regulated automatically or manually. The automatic control is performed by a control unit, such as a microcontroller, microprocessor, a on chip control unit, a central processing unit, or any such suitable arrangement. The control unit may also comprise integrated sensor at least: to monitor user's state namely, when the user is asleep, to monitor what is an ambient noise level, and such parameter which may affect volume of the acoustic signal generated. The manual control may be performed via a spring coil, a rotatory knob, a button, and such manual means. The technical advantage is regulating volume of the acoustic signal to ensure maximum user comfort. The technical effect is controlling volume of the acoustic signal as required, manually by the user or automatically by utilization of a control system to ensure user comfort. In another embodiment, the present disclosure relates to an earbud system for receiving a magnetic field signal to generate an acoustic signal for a user to hear when the earbud system is used by the user, the earbud system comprising: a pair of earbuds, each earbud comprising: an elongated hollow tube adapted to be at least partly inserted into the user's ear canal; and an external chamber arranged angularly to the elongated hollow tube and wherein the elongated hollow tube is coupled to the external chamber via a ball-socket arrangement, wherein the external chamber comprising: at least one magnet implemented as a magnetic diaphragm is arranged within an internal volume of the external chamber configured to: receive the magnetic field signal, experience a force generated by an interaction of a magnetic field of the magnetic diaphragm with the magnetic field signal, and undergo a corresponding movement as a result of the force to produce the acoustic signal, and a pair of silicone rings adapted to secure the magnetic diaphragm by its periphery within the internal volume of the external chamber.

[0059] In this disclosed embodiment, the earbud system comprises the pair of earbuds, each earbud including the elongated hollow tube that is dimensioned and configured to be at least partially inserted into the user's ear canal, and the external chamber that remains positioned outside the ear. The elongated hollow tube is mechanically coupled to the external chamber through the ball-socket arrangement, such that the elongated hollow tube can pivot, tilt, and undergo limited rotation relative to the external chamber. This articulation allows the elongated hollow tube to self-adjust to different ear canal geometries, thereby improving both sealing efficiency and long term comfort during continuous usage. In certain implementations, the tube may also include a soft polymeric sleeve or medical grade silicone tip that conforms to variations in ear canal anatomy for improved acoustic isolation.

[0060] In this regard, the elongated hollow tube and the ball-socket arrangement are arranged next to the internal volume housing the magnetic diaphragm rather than on top of it, which aids in making the earbud slimmer and therefore more comfortable. The elongated hollow tube has an external diameter in a range of 2.5 to 3.5 mm and an internal diameter in a range of 1 to 2 mm. The aforementioned ranges for the elongated hollow tube allows for any standard high-end ear-tip to be fitted thereon, giving the user a wide choice of after-market tip styles.

[0061] In this embodiment, the external chamber may be oval shaped, ovoid, tear drop shaped, pear shaped, or formed in other contoured and ergonomic geometries specifically designed to reduce or eliminate user discomfort even during extended periods of wear. The overall size and wall thickness of the external chamber may be selected to balance acoustic resonance properties with weight reduction, such that the chamber remains lightweight without compromising vibrational performance.

[0062] Within the external chamber, the at least one magnet implemented as a magnetic diaphragm is provided. It may be appreciated that the magnetic diaphragm may be implemented as a thin magnetic membrane or film capable of responding rapidly to dynamic magnetic fields. The magnetic diaphragm is securely retained at its periphery by the pair of silicone rings, which act as both mechanical retainers and flexible suspension members. The pair of silicone rings maintain the magnetic diaphragm under slight tension while also permitting controlled oscillatory motion, thereby enhancing the fidelity of acoustic reproduction and minimizing unwanted harmonic distortion. The pair of silicon rings are shaped depending on the shape of the internal volume of the external chamber and the shape of the magnetic diaphragm. For example, in an exemplary implementation, the pair of silicone rings may be O-shaped.

[0063] In this embodiment, the earbud system is operable to receive input from an input source that is communicably connected to the pair of earbuds. In one implementation, the earbuds are directly connected to the input source without any intermediate circuitry or signal conditioning stages providing a simple, low power use case. In another implementation, the earbud system further comprises an external amplification unit, which receives raw input signals from the input source, processes or amplifies them as required (e.g., via analogue or digital signal amplification circuitry), and transmits the processed signals to the earbuds. In certain embodiments, the external amplification unit may transmit the processed input in the form of a magnetic field signal, thereby eliminating conventional wired transduction pathways and reducing power handling demands at the earbud side.

[0064] The magnetic diaphragm within each earbud is thus configured to interact directly with the magnetic field signal received from the external amplification unit. Because the magnetic diaphragm inherently maintains its own magnetic field, the received magnetic field signal interacts with the magnetic diaphragm's magnetic field, generating a force that displaces the magnetic diaphragm in a controlled manner. The resulting displacement produces a corresponding acoustic signal that propagates through the elongated hollow tube and into the user's ear canal. In certain examples, damping materials or micro-perforated acoustic liners may be integrated within the tube to fine tune frequency response, reduce resonance effects, and enhance sound clarity. Advantageously, when the earbud system is in operation, the user perceives a high fidelity acoustic output corresponding to the original input, reproduced through a mechanism that relies primarily on magnetic field interaction and diaphragm motion rather than conventional coil based actuation. It may be appreciated that this configuration offers advantages including reduced component complexity, improved efficiency, lightweight form factor, and a more comfortable and versatile fit for a wide range of users.

[0065] EXPERIMENTAL PART

[0066] In one experiment, an earbud system was used for a user who had trouble sleeping due to noise pollution (such as on an airplane, around noisy equipment), tinnitus or surrounding noise such as a partner who snores. The aforementioned earbud system was designed to be compact in size so as to avoid discomfort to the user when used during sleep. Advantageously, aforementioned earbud system was designed to incorporate a pair of miniaturized wireless earbuds, and an external amplification unit (having a Bluetooth® receiver, an audio amplifier and its associated coil arrangement), as well as a powering circuit arranged externally to the pair of miniaturized wireless earbuds of the earbud system, for achieving such compact design in order to cater to user's comfort. Moreover, the earbud was made up of skin friendly material, which was designed to fit inside an ear canal, thereby cancelling background noise perfectly without any compromise with the user's comfort. It was observed that a good sleep has been clinically proven to prevent a host of different health issues, including, but no limited to, cardiovascular problems (for example, hypertension, heart diseases), metabolic disorders (for example, obesity, diabetes), immune system dysfunction (for example, weakened immune response), mental health issues (for example, depression, anxiety), cognitive impairment (for example, memory problems and poor concentration), endocrine disorders (for example, hormonal imbalance), increased risk of accidents (for example, motor vehicle and workplace accidents) and overall mortality (for example, shortened lifespan).

[0067] DETAILED DESCRIPTION OF THE DRAWINGS

[0068] Referring to FIGs. 1A, IB and 1C, illustrated are exploded schematic illustrations of an earbud system for receiving a magnetic field signal to generate an acoustic signal for a user to hear when the earbud system is worn used by the user, in accordance with an embodiment of the present disclosure. As shown in FIG. 1A, the earbud system 100 comprises a pair of earbuds 1OOA, each earbud 1OOA comprising an elongated hollow tube 102 adapted to be at least partly inserted into the user's ear canal; and an external chamber 104 arranged angularly to the elongated hollow tube 102. The external chamber 104 comprises at least one magnet 106 configured to receive the magnetic field signal produced by an external amplification unit (not shown) communicably coupled to the pair of earbuds 100A, and to experience a force generated by an interaction of a magnetic field generated by the at least one magnet 106 with the magnetic field signal, wherein the at least one magnet 106 is configured to undergo a corresponding movement as a result of the force. Moreover, the external chamber 104 comprises a coupling arrangement 108 for converting the corresponding movement mechanically into a corresponding levered movement; and a flexible diaphragm 110 configured to receive the levered movement correspondingly deflecting the flexible diaphragm 110 to generate the corresponding acoustic signal for the user to hear when the earbud system 100 is worn used by the user. The earbud system 100 also comprises a flanged tip 112 attached to one end of the elongated hollow tube 102, of the earbud 100A, which is at least partly inserted into the user's ear canal. As shown in FIG. 1A, the at least one magnet 106 is configured to be suspended along at a least a portion of its periphery onto the flexible diaphragm 110 and the flexible diaphragm 110 is configured to be suspended along at a least a portion of its periphery onto the external chamber 104. The flexible diaphragm 110 is flexed corresponding to movement of the at least one magnet 106 to generate an acoustic signal which is transmitted by the elongated hollow tube 102 attached at a slot 102A.

[0069] Referring to FIG. IB, the at least one magnet 106 is arranged within the external chamber 104 on a flexible lever arm 114 and the corresponding movement of the at least one magnet is transmitted to the flexible diaphragm via the coupling arrangement 108 having at least one push rod 116.

[0070] Referring to FIG. 1C, the at least one magnet 106 is arranged on a magnet mounting diaphragm 118, wherein the magnet mounting diaphragm 118 is configured to move corresponding to the movement of the at least one magnet. A flexible lever arm 120 is suspended along at a least a portion of its length onto the external chamber 104. A first push rod 122A is coupled to the magnet mounting diaphragm 118 and facing the flexible lever arm 120 and a second push rod 122B coupled to the flexible lever arm 120 and facing the flexible diaphragm 110. In this regard, it may be appreciated that the corresponding movement of the at least one magnet 106 is transmitted to the flexible diaphragm 110 as levered movement via the magnet mounting diaphragm 118, the flexible lever arm 120, the first push rod 122A and the second push rod 112B wherein, the magnet mounting diaphragm 118 motivates the first push rod 122A to activate the flexible lever arm 120 which in turn activates the second push rod 122B to transfer the levered movement to the flexible diaphragm 110.

[0071] Referring to FIGs. 2A, 2B and 2C, illustrated are schematic illustrations of a coupling arrangement 200, in accordance with an embodiment of the present disclosure. Referring to FIG. 2A, the coupling arrangement 200 is implemented as at least one magnet 202 arranged directly on a flexible diaphragm 204 within an external chamber 206. In this regard, the at least one magnet 202 arranged on a peripheral region 204A of the flexible diaphragm. A corresponding movement of the at least one magnet 202 is transferred to a central region 204B to flex the flexible diaphragm 204 subsequently to generate an acoustic signal.

[0072] As shown in FIG. 2B, the coupling arrangement 200 is implemented as a flexible lever arm 208 coupled to at least one push rod 210, wherein the flexible lever arm 208 is configured to host the at least one magnet 202 and the at least one push rod 210 is coupled to the flexible diaphragm 204 for transferring the levered movement thereto.

[0073] As shown in FIG. 2C, the coupling arrangement 200 is implemented at a passive movement transfer arrangement. In this regard, the at least one magnet 202 is mounted on a magnet mounting diaphragm 212 configured to move corresponding to the movement of the at least one magnet 202. A flexible lever arm 214 is suspended along at a least a portion of its length onto the external chamber 206. A first push rod 216A is coupled to the magnet mounting diaphragm 212 while facing the flexible lever arm 214 and a second push rod 216A is coupled to the flexible lever arm 214 while facing the flexible diaphragm 204. In this regard, the magnet mounting diaphragm 212 motivates the first push rod 216A to activate the flexible lever arm 214 which in turn activates the second push rod 216A to transfer the levered movement to the flexible diaphragm 204.

[0074] Referring to FIG. 3, illustrated is an external amplification unit 300, in accordance with an embodiment of the present disclosure. The external amplification unit 300 comprises a receiving unit 302, namely the Bluetooth® receiver; one or more adjustment means 304. In this respect, the receiving unit 302 is configured to couple with an input source wirelessly and the one or more adjustment means 304 configured to perform ON-OFF of the external amplification unit, control of volume of an acoustic signal generated.

[0075] Referring to FIG. 4, illustrated is a transmission coil 400, in accordance with an embodiment of the present disclosure. The transmission coil 400 comprises a copper wire 402 arranged in a foam rubber mat 404. The transmission coil 400 also include wires 406 connecting to an external battery unit (not shown). The transmission coil 400 is configured to generate magnetic field signal corresponding to an input which is transmitted to a pair of earbuds which are worn by a user.

[0076] Referring to FIGs. 5A, 5B, and 5C, illustrated are schematic illustrations of implementations of an earbud system for receiving a magnetic field signal to generate an acoustic signal for a user to hear when the earbud system is worn used by the user, in accordance with an embodiment of the present disclosure.

[0077] Referring to FIG. 5A, illustrated is a schematic illustration of an earbud system 500 for receiving a magnetic field signal to generate a corresponding acoustic signal for a user to hear when the earbud is worn by the user, in accordance with an embodiment of the present disclosure. The earbud system 500 comprises an earbud 502 communicably coupled to an external amplification unit 504 and transmission coil 506. The external amplification unit 504 triggers the transmission coil 506 to generate a magnetic field signal which is received by the earbud 502 to generate a corresponding acoustic signal. In FIG. 5B, there is shown the external amplification unit 504, comprising a Bluetooth® receiver and an audio power amplifier. Also shown in in FIG. 5C, the transmission coil 506 which is coupled with external amplification unit 504 and is configured to transmit a magnetic field signal (corresponding to an electrical input received by the external amplification unit 504 from an input source) to the earbud 502. It may be appreciated that the transmission coil 506 conveniently placed under a bed, pillow, and such without compromising comfort of the user. As shown in FIG. 5C, the earbud 502 is configured to be worn by the user. The ambient noise 508 is blocked by the earbud 502 to let the user hear a clear audio 510.

[0078] Referring to FIG. 6A, illustrated is an exploded view of an earbud system 600, in accordance with an embodiment of the present disclosure. As shown, the earbud system 600 comprises a pair of earbuds, wherein each earbud 600A comprises an elongated hollow tube 602 adapted to be at least partly inserted into the user's ear canal and an external chamber 604. The elongated hollow tube 602 is arranged in a ball-socket arrangement 602A on a body of the external chamber 604. The external chamber 604 comprises a first part 604A and a second part 604B to be coupled together. The external chamber 604 is oval shaped, ovoid shaped, tear drop shaped, pear shaped, or any such suitable and ergonomic shape designed to avoid any user discomfort during use. The external chamber 604 comprises at least one magnet implemented as a magnetic diaphragm 606 within an internal volume 604C of the external chamber 604. A pair of O-shaped silicon rings 608 are arranged within the internal volume 604C to secure the magnetic diaphragm 606 by its periphery, within the internal volume 604C of the external chamber 604. The magnetic diaphragm 606 is configured to receive an input from an input source, in form of a magnetic field signal which interact with a magnetic field of the magnetic diaphragm 606. This interaction causes the magnetic diaphragm 606 to experience a force and to undergo a corresponding movement as a result of the force. The corresponding movement of the magnetic diaphragm 606 generates a corresponding acoustic signal for the user to hear when the earbud system is used by the user.

[0079] Referring to FIGs. 6B and 6C, illustrated are schematic illustrations depicting perspective views of the earbud system 600 of FIG. 6A, in accordance with an embodiment of the present disclosure. In FIG. 6B a first perspective view of an earbud 600A is shown. As shown in FIG. 6B, the earbud 600A comprises the elongated hollow tube 602 and the external chamber 604. As shown, the first part and the second part of the external chamber 604 are coupled together. The magnetic diaphragm is enclosed within the internal volume of the external chamber 604. The elongated hollow tube 602 is coupled to the external chamber 604 via the ball-socket arrangement 602A. In this regard, the elongated hollow tube 602 and the ball-socket arrangement 602A are arranged next to the internal volume housing the magnetic diaphragm. In FIG. 6C, a second perspective view of an earbud 600A is shown. In FIG. 6C, the earbud 600A comprising the external chamber 604 and the elongated hollow tube 602 is shown.

Claims

CLAIMS1. An earbud system (100, 500) for receiving a magnetic field signal to generate an acoustic signal for a user to hear when the earbud system is used by the user, the earbud system comprising : a pair of earbuds (100A, 502), each earbud comprising: an elongated hollow tube (102) adapted to be at least partly inserted into the user's ear canal; and an external chamber (104) arranged angularly to the elongated hollow tube, the external chamber comprising: at least one magnet (106, 202) configured to receive the magnetic field signal produced by an external amplification unit (300) communicably coupled to the earbud, and to experience a force generated by an interaction of a magnetic field generated by the at least one magnet with the magnetic field signal, wherein the at least one magnet is configured to undergo a corresponding movement as a result of the force; a coupling arrangement (108, 200) for converting the corresponding movement mechanically into a corresponding levered movement; and a flexible diaphragm (110, 204) configured to receive the levered movement correspondingly deflecting the flexible diaphragm to generate the corresponding acoustic signal for the user to hear when the earbud system is used by the user.

2. An earbud system (100, 500) of claim 1, wherein the at least one magnet (106, 202) is configured to be suspended along at a least a portion of its periphery onto the flexible diaphragm (110, 204).

3. An earbud system (100, 500) of claim 1 or 2, wherein the flexible diaphragm (110,204) is configured to be suspended along at a least a portion of its periphery onto the external chamber (104).

4. An earbud system (100, 500) of any one of the preceding claims, wherein the coupling arrangement (108, 200) is implemented as a flexible lever arm (114) coupled to at least one push rod (116), wherein the flexible lever arm is configured to host the at least one magnet (106, 202) and the at least one push rod is coupled to the flexible diaphragm (110, 204) for transferring the levered movement thereto.

5. An earbud system (100, 500) of any one of the preceding claims 1- 3, wherein the coupling arrangement (108, 200) is implemented as: a magnet mounting diaphragm (118, 212) having the at least one magnet (106, 202) mounted thereon, wherein the magnet mounting diaphragm is configured to move corresponding to the movement of the at least one magnet; a flexible lever arm (120) suspended along at a least a portion of its length onto the external chamber (104); a first push rod (122A) coupled to the magnet mounting diaphragm and facing the flexible lever arm; and a second push rod (122B) coupled to the flexible lever arm and facing the flexible diaphragm (110, 204); wherein the magnet mounting diaphragm motivates the first push rod to activate the flexible lever arm which in turn activates the second push rod to transfer the levered movement to the flexible diaphragm.

6. An earbud system (100, 500) of any one of the preceding claim 1- 3, wherein the coupling arrangement (108, 200) is implemented by mounting the at least one magnet (106, 202) onto a peripheral region (204A) of the flexible diaphragm (110, 204), wherein an edge of the flexible diaphragm is configured to function as a fulcrum for convertingthe corresponding movement mechanically into the corresponding levered movement in a central region (204B) of the flexible diaphragm.

7. An earbud system (100, 500) of any one of the preceding claims, wherein the coupling arrangement (108, 200) is implemented as a hydraulic coupling using a liquid as a coupling medium.

8. An earbud system (100, 500) of any one of the preceding claims, wherein the at least one magnet (106, 202) is implemented using at least one of: one or more neodymium magnets, one or more ferrite magnets.

9. An earbud system (100, 500) of any one of the preceding claims, wherein at least one component part of the earbud system is manufactured from at least one of: injection-moulded plastics materials; stamped, laser-cut or etched metal sheet; 3-D printed plastics material components.

10. An earbud system (100, 500) of any one or the preceding claims, wherein at least flexible component the earbud system is fabricated from at least one of: a metal sheet, a flexible plastics material, a graphene sheet, a silicon micromachined membrane.

11. An earbud system (100, 500) of any one of the preceding claims, wherein the earbud (100A, 502) is configured to be worn during sleep of the user, to provide the user with a noise signal for mitigating effects of tinnitus.

12. An earbud system (100, 500) of any one of the preceding claims, wherein the earbud (100A, 502) is implemented as a planar assembly that is configured in use to have its principal plane substantially parallel to side surfaces of the user's head, wherein at least a portion of the earbud is accommodated within at least one ear channel of the user.

13. An earbud system (100, 500) of any one of the preceding claims, further comprising a flanged tip (112) adapted to fit at least partially over the elongated hollow tube (102), wherein the flanged tip fitted at leastpartially over the elongated hollow tube is configured to form a seal in the user's ear canal when the earbud is worn by the user.

14. An earbud system (100, 500) of any one of the preceding claims, further comprising the external amplification unit (300, 504), wherein the external amplification unit, communicably coupled to the earbud, is configured to receive an input from an input source and to generate the corresponding magnetic field signal.

15. An earbud system (100, 500) of any one of the preceding claims, wherein the external amplification unit (300, 504) is coupled to a transmission coil (400, 506) to generate magnetic field signal.

16. An earbud system (100, 500) of any one of the preceding claims, further comprising an external battery unit, operatively coupled to the external amplification unit (300, 504), configured to provide power to the external amplification unit.

17. An earbud system (100, 500) of any one of the preceding claims, wherein the external chamber (104) is arranged perpendicular to the elongated hollow tube.

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