Earphone and method for controlling earphone

Abstract

The embodiment of the invention provides an earphone and a method for controlling the earphone, and the earphone comprises an air conduction oscillator which is configured to generate air conduction sound; a bone conduction oscillator configured to generate bone conduction sound; the control circuit is configured to execute switching operation in multiple working states of the earphone, and the multiple working states of the earphone at least comprise the working state when the air conduction oscillator or the bone conduction oscillator works independently.

Description

Technical Field

[0001] This application relates to the field of acoustic technology, and in particular to an earphone and a method for controlling the earphone. Background Technology

[0002] As the sound-generating component in headphones, the speaker converts electrical signals into sound signals. Generally, based on the sound propagation method, speakers can be categorized into bone conduction speakers, air conduction speakers, and bone-air conduction speakers. Bone conduction speakers generate bone conduction sound signals. Air conduction speakers generate air conduction sound signals. Bone-air conduction speakers generate both bone conduction and air conduction sound signals simultaneously. However, current headphone products typically only support fixed types of sound propagation methods, which limits the application scenarios of headphones. Taking an air conduction speaker in headphones as an example, when the external ambient noise is high, the air conduction sound signal output by the air conduction speaker may be drowned out by the ambient noise, resulting in unclear sound for the user; when headphones are submerged in water, the air conduction speaker cannot produce sound properly. Summary of the Invention

[0003] This specification provides an embodiment of an earphone, including: an air-conducting vibrator configured to generate air-conducted sound; a bone-conducting vibrator configured to generate bone-conducted sound; and a control circuit configured to perform switching operations among multiple operating states of the earphone, wherein the multiple operating states of the earphone include at least the operating states when the air-conducting vibrator or the bone-conducting vibrator operates alone. By using the control circuit to control the earphone to switch between multiple operating states, the earphone can operate in an appropriate operating state in different scenarios, improving the flexibility of use in different scenarios and thus enhancing the user experience.

[0004] In some embodiments, the multiple operating states of the headphones include a first operating state and a second operating state. The control circuit is configured to perform the following operations: receive a control signal; and in response to the control signal, perform a switch from the first operating state to the second operating state. By controlling the headphones to switch between the first and second operating states using the control circuit, the headphones can operate in an appropriate state in different scenarios, improving the flexibility of use in various situations and thus enhancing the user experience.

[0005] In some embodiments, the headphones are equipped with control buttons, and the control signals originate from commands generated by the user operating the control buttons. By providing control buttons on the headphones, users can actively switch the working states of the headphones according to actual needs, improving the flexibility of headphone use.

[0006] In some embodiments, the first operating state is the operating state when the air-conducting vibrator operates alone, and the second operating state is the operating state when the bone-conducting vibrator operates alone. In environments with high humidity, using a control circuit to switch the headphones from the operating state when the air-conducting vibrator operates alone to the operating state when the bone-conducting vibrator operates alone can ensure that the sound output of the headphones is not affected, thus guaranteeing the user's listening experience.

[0007] In some embodiments, the earphones are equipped with a sensor that detects at least one environmental parameter, and the control signal originates from the change in the value of the environmental parameter satisfying a first preset condition. Based on the change in the value of the environmental parameter detected by the sensor, the control circuit automatically performs a switching operation of the earphones' operating state, resulting in higher intelligence and improved user experience.

[0008] In some embodiments, the environmental parameters include the liquid weight at a specific location on the earphone, and the first preset condition is that the liquid weight exceeds a first threshold. By setting a sensor on the earphone to detect the liquid weight (or liquid pressure) at a specific location on the earphone, and by reasonably setting the first threshold, when the earphone is in a state of being soaked or contaminated by liquid (such as in rainy weather, heavy sweating during exercise, water activities, etc.), the control circuit can switch the earphone from the working state when the air conduction vibrator works alone to the working state when the bone conduction vibrator works alone, thereby ensuring that the sound production of the earphone is not affected and thus ensuring the user's listening effect.

[0009] In some embodiments, the environmental parameters include the volume of ambient noise, and the first preset condition is that the volume of the ambient noise exceeds a second threshold. By setting a sensor on the headphones to detect the volume of ambient noise and reasonably setting the second threshold, when the headphones are in a noisy environment, the control circuit can switch the headphones from the working state when the air conduction vibrator works alone to the working state when the bone conduction vibrator works alone, thereby ensuring the user's listening effect.

[0010] In some embodiments, the first operating state is the operating state when the bone conduction vibrator is working alone, and the second operating state is the operating state when the air conduction vibrator is working alone. By using a control circuit to control the headphones to switch from the operating state when the bone conduction vibrator is working alone to the operating state when the air conduction vibrator is working alone, the vibration sensation caused by the headphones can be reduced, thereby improving the listening experience.

[0011] In some embodiments, the earphones are equipped with a sensor that detects at least one environmental parameter, and the control signal originates from the change in the value of the environmental parameter satisfying a second preset condition. Based on the change in the value of the environmental parameter detected by the sensor, the control circuit automatically performs a switching operation of the earphones' operating state, resulting in higher intelligence and improved user experience.

[0012] In some embodiments, the environmental parameters include the liquid weight at a specific location on the earphone, and the second preset condition is that the liquid weight is less than a third threshold. By setting a sensor on the earphone to detect the liquid weight (or liquid pressure) at a specific location on the earphone, and by reasonably setting the third threshold, when the earphone is in a relatively dry environment, the control circuit can switch the earphone from the working state when the bone conduction vibrator is working alone to the working state when the air conduction vibrator is working alone, thereby reducing the vibration sensation caused to the user by the earphone (especially the bone conduction vibrator) and improving the listening experience.

[0013] In some embodiments, the environmental parameters include the volume of ambient noise, and the second preset condition is that the volume of the ambient noise is less than a fourth threshold. By setting a sensor on the headphones to detect the volume of ambient noise and reasonably setting the fourth threshold, when the headphones are in a low-noise environment, the control circuit can switch the headphones from the working state when the bone conduction vibrator is working alone to the working state when the air conduction vibrator is working alone, thereby reducing the vibration sensation caused to the user by the headphones (especially the bone conduction vibrator) and improving the listening experience.

[0014] In some embodiments, the first operating state is the operating state when the bone conduction vibrator and the air conduction vibrator operate simultaneously, and the second operating state is the operating state when either the bone conduction vibrator or the air conduction vibrator operates alone. By using a control circuit to switch the headphones from the operating state where the bone conduction vibrator and the air conduction vibrator operate simultaneously to the operating state where either the bone conduction vibrator or the air conduction vibrator operates alone, power consumption can be reduced and headphone usage time extended.

[0015] In some embodiments, the first operating state is the operating state when the bone conduction vibrator or the air conduction vibrator operates alone, and the second operating state is the operating state when the bone conduction vibrator and the air conduction vibrator operate simultaneously. By using a control circuit to switch the headphones from the operating state when the bone conduction vibrator or the air conduction vibrator operates alone to the operating state when both bone conduction vibrators and air conduction vibrators operate simultaneously, the low-frequency sound of the bone conduction vibrator and the high-frequency sound of the air conduction vibrator can complement each other, thereby improving the acoustic performance of the headphones.

[0016] In some embodiments, the bone conduction vibrator includes a first magnetic circuit, a vibrating plate, and a first coil, while the air conduction vibrator includes a diaphragm, a second magnetic circuit, and a second coil. The angle between the first vibration direction of the vibrating plate in the first magnetic circuit and the second vibration direction of the diaphragm in the second magnetic circuit ranges from 45° to 135°. By appropriately setting the angle range between the first and second vibration directions, mutual interference between the two vibrators during sound generation can be reduced.

[0017] In some embodiments, the bone conduction vibrator and the air conduction vibrator are located in the same housing. The vibration of the bone conduction vibrator is transmitted to the face-contact side of the housing, and the air conduction vibrator emits sound through two sound guide holes on the front and rear sides of the diaphragm, one of which faces the ear canal opening.

[0018] In some embodiments, a waterproof and breathable membrane is provided at each of the two sound guide holes. By providing a waterproof and breathable membrane at the sound guide holes, the waterproof and dustproof performance of the headphones can be increased.

[0019] In some embodiments, the headphones include an ear hook configured to wear the housing on the front side of the tragus. Wearing the housing on the front side of the tragus with an ear hook allows one of the headphone's sound holes to face the ear canal opening, facilitating the transmission of air-conducted sound through the sound hole to the ear canal opening. Furthermore, it ensures a better fit between the face and the side of the housing that touches the face, improving the transmission effect of bone conduction sound.

[0020] Some embodiments of this specification also provide a method for controlling headphones, the headphones including an air-conducting vibrator configured to generate air-conducted sound, a bone-conducting vibrator configured to generate bone-conducted sound, and a control circuit. The method includes: receiving a control signal by the control circuit; and, in response to the control signal, performing a switch from a first operating state of the headphones to a second operating state of the headphones by the control circuit, wherein the first operating state or the second operating state includes the operating state when the air-conducting vibrator or the bone-conducting vibrator operates alone. By using a control circuit to control the headphones to switch between multiple operating states, the headphones can operate in an appropriate operating state in different scenarios, improving the flexibility of use of the headphones in different scenarios and thus enhancing the user experience. Attached Figure Description

[0021] This application will be further described by way of exemplary embodiments, which will be described in detail with reference to the accompanying drawings. These embodiments are not limiting; in these embodiments, the same reference numerals denote the same structures, wherein:

[0022] Figure 1 These are schematic diagrams illustrating application scenarios of the headphones according to some embodiments of this specification;

[0023] Figure 2 This is an exemplary frame structure diagram of the headphones shown according to some embodiments of this specification;

[0024] Figure 3 These are exemplary structural diagrams of a bone conduction oscillator shown in some embodiments of this specification;

[0025] Figure 4 These are exemplary structural diagrams of an air-conducting oscillator shown in some embodiments of this specification;

[0026] Figure 5A This is a schematic diagram illustrating various operating states of the headphones and their switching methods according to some embodiments of this specification;

[0027] Figure 5B This is an exemplary flowchart of a headphone state switching method according to some embodiments of this specification;

[0028] Figure 6 These are exemplary structural diagrams of headphones shown according to some embodiments of this specification;

[0029] Figure 7 This is a schematic diagram of the headphones in a wearing state according to some embodiments of this specification. Detailed Implementation

[0030] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are merely some examples or embodiments of this application. For those skilled in the art, these drawings can be applied to other similar scenarios without creative effort. Unless obvious from the context or otherwise specified, the same reference numerals in the drawings represent the same structures or operations.

[0031] It should be understood that the terms “system,” “device,” “unit,” and / or “module” used herein are one way to distinguish different components, elements, parts, sections, or assemblies at different levels. However, if other terms can achieve the same purpose, they may be replaced by other expressions.

[0032] As indicated in this application and claims, unless the context clearly indicates otherwise, the words "a," "an," "an," and / or "the" do not specifically refer to the singular and may also include the plural. Generally speaking, the terms "comprising" and "including" only indicate the inclusion of explicitly identified steps and elements, which do not constitute an exclusive list, and the method or apparatus may also include other steps or elements.

[0033] In the description of this specification, it should be understood that the terms "first," "second," "third," "fourth," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first," "second," "third," or "fourth" may explicitly or implicitly include at least one of that feature. In the description of this specification, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0034] In this specification, unless otherwise expressly specified and limited, the terms "connection," "fixed," etc., should be interpreted broadly. For example, the term "connection" can refer to a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this specification according to the specific circumstances.

[0035] Figure 1 These are schematic diagrams illustrating application scenarios of headphones according to some embodiments of this specification. For example... Figure 1 As shown, in some embodiments, the application scenario 100 of the headphones may include a multimedia platform 110, a network 120, headphones 130, a user terminal 140, and a storage device 150.

[0036] Multimedia platform 110 can communicate with one or more components of application scenario 100 or external data sources (e.g., cloud data centers). In some embodiments, multimedia platform 110 can provide data or signals (e.g., audio data of music) to headset 130 and / or user terminal 140. In some embodiments, multimedia platform 110 can be used for data / signal processing of headset 130 and / or user terminal 140. In some embodiments, multimedia platform 110 can be implemented on a single server or a group of servers. The server group can be a centralized server group connected to network 120 via a distributed server group connected to network 120 via one or more access points. In some embodiments, multimedia platform 110 can be locally connected to network 120 or remotely connected to network 120. For example, multimedia platform 110 can access information and / or data stored in headset 130, user terminal 140, and / or storage device 150 via network 120. As another example, storage device 150 can be used as backend data storage for multimedia platform 110. In some embodiments, multimedia platform 110 can be implemented on a cloud platform. As an example only, the cloud platform may include private cloud, public cloud, hybrid cloud, community cloud, distributed cloud, internal cloud, multi-layer cloud, or any combination thereof.

[0037] In some embodiments, the multimedia platform 110 may include a processing device 112. The processing device 112 may perform the main functions of the multimedia platform 110. For example, the processing device 112 may retrieve audio data from the storage device 150 and send the retrieved audio data to headphones 130 and / or user terminal 140 to generate sound. In other embodiments, the processing device 112 may process signals from the headphones 130 (e.g., generate control signals).

[0038] In some embodiments, the processing device 112 may include one or more processing units (e.g., a single-core processing device or a multi-core processing device). By way of example only, the processing device 112 may include a central processing unit (CPU), an application-specific integrated circuit (ASIC), an application-specific instruction set processor (ASIP), a graphics processing unit (GPU), a physical processing unit (PPU), a digital signal processor (DSP), a field-programmable gate array (FPGA), a programmable logic device (PLD), a controller, a microcontroller unit, a reduced instruction set computer (RISC), a microprocessor, or any combination thereof.

[0039] Network 120 can facilitate information and / or data exchange. In some embodiments, one or more components in application scenario 100 (e.g., multimedia platform 110, headset 130, user terminal 140, storage device 150) can transmit information and / or data to other components in application scenario 100 via network 120.

[0040] The headset 130 can output sound to the user and interact with the user. In some embodiments, the headset 130 can provide the user with audio content, such as songs, poems, news broadcasts, weather broadcasts, audio courses, etc. In some embodiments, the user can provide feedback to the headset 130 through, for example, keys, screen touch, body movements, voice, gestures, thoughts, etc.

[0041] The headset 130 can communicate with the user terminal 140 via the network 120. In some embodiments, various types of data and / or information may include, but are not limited to, motion parameters (e.g., geographical location, direction of movement, speed of movement, acceleration, etc.) and voice parameters (volume of sound, content of sound, etc.). In some embodiments, the headset 130 may also send the received data and / or information to the multimedia platform 110 or the user terminal 140.

[0042] In some embodiments, the headphones 130 may include an air-conducting vibrator and a bone-conducting vibrator. The air-conducting vibrator is configured to generate air-conducted sound. For example, the air-conducting vibrator can convert electrical signals into air vibrations that are received by the user's ear via a diaphragm. The bone-conducting vibrator is configured to generate bone-conducted sound. For example, the bone-conducting vibrator can convert audio signals (e.g., electrical signals) into vibrations of the housing and transmit them to the user's bones (e.g., skull). In some embodiments, the headphones 130 may include multiple operating states, such as an operating state where the air-conducting vibrator and bone-conducting vibrator operate simultaneously, an operating state where the air-conducting vibrator operates alone (in which case the bone-conducting vibrator is not operating), and an operating state where the bone-conducting vibrator operates alone (in which case the air-conducting vibrator is not operating). In some embodiments, the headphones 130 may also include a control circuit configured to perform a switching operation among the above-described multiple operating states of the headphones 130. In some embodiments, the control circuit performs the switching operation among the multiple operating states of the headphones 130 based on a control signal (e.g., a control signal generated by user operation, a control signal generated by changes in environmental parameters detected by sensors). For example, when the earphone 130 is in a high-noise environment, the control circuit can switch the operating state of the earphone 130 from the state where the air-conducting vibrator works alone to the state where the bone-conducting vibrator works alone; or, when the earphone 130 is in a relatively quiet environment, the control circuit can switch the operating state of the earphone 130 from the state where the bone-conducting vibrator works alone to the state where the air-conducting vibrator works alone. As another example, when the earphone 130 is in a high-humidity or liquid environment (such as when the user wears the earphone in the rain or while swimming), the control circuit can switch the operating state of the earphone 130 from the state where the air-conducting vibrator works alone to the state where the bone-conducting vibrator works alone; or, when the earphone 130 is in a relatively dry environment, the control circuit can switch the operating state of the earphone 130 from the state where the bone-conducting vibrator works alone to the state where the air-conducting vibrator or bone-conducting vibrator works alone. As yet another example, when the earphone 130 is in a low-battery state, the control circuit can switch the operating state of the earphone 130 from the state where both the air-conducting and bone-conducting vibrators work simultaneously to the state where only one of the air-conducting or bone-conducting vibrators works. For example, when the headset 130 is in a call state, the control circuit can switch the working state of the headset 130 from the working state when the air conduction vibrator works alone (or the working state when the bone conduction vibrator works alone) to the working state when the bone conduction vibrator and the air conduction vibrator work simultaneously.

[0043] For a more detailed description of the headphones 130, please refer to the detailed description elsewhere in this application, for example, Figures 2-7 And its related descriptions.

[0044] In some embodiments, the user terminal 140 can be customized, for example, by installing an application on the user terminal 140. This application can be used to communicate with and / or process data and / or signals from the headset 130. The user terminal 140 may include a mobile device 140-1, a tablet computer 140-2, a laptop computer 140-3, a built-in device 140-4 in a vehicle, etc., or any combination thereof. In some embodiments, the mobile device 140-1 may include smart home devices, smart mobile devices, etc., or any combination thereof. In some embodiments, smart home devices may include smart lighting devices, smart appliance control devices, smart monitoring devices, smart TVs, smart cameras, walkie-talkies, etc., or any combination thereof. In some embodiments, smart mobile devices may include smartphones, personal digital assistants (PDAs), gaming devices, navigation devices, etc., or any combination thereof. In some embodiments, the built-in device 140-4 in a vehicle may include a built-in computer, a built-in TV, a built-in tablet computer, etc. In some embodiments, the user terminal 140 may include a signal transmitter and a signal receiver configured to communicate with a positioning device (not shown) that locates the user and / or the user terminal 140. In some embodiments, the multimedia platform 110 or the storage device 150 may be integrated into the user terminal 140. In this case, the functions that the multimedia platform 110 can perform can be similarly implemented through the user terminal 140.

[0045] Storage device 150 can store data and / or instructions. In some embodiments, storage device 150 can store data obtained from multimedia platform 110, headset 130, and / or user terminal 140. In some embodiments, storage device 150 can store data and / or instructions that enable multimedia platform 110, headset 130, and / or user terminal 140 to perform various functions.

[0046] In some embodiments, the multimedia platform 110, network 120, user terminal 140, and / or storage device 150 may be integrated into the headset 130. For example, the headset 130 may be a smart headset, MP3 player, etc., with highly integrated electronic components (such as a central processing unit (CPU), graphics processing unit (GPU), etc.).

[0047] It should be noted that the above description of application scenario 100 is for illustrative purposes only and does not limit the scope of this specification. Those skilled in the art can make various modifications and changes to application scenario 100 under the guidance of this specification. However, these modifications and changes remain within the scope of this specification.

[0048] Figure 2 This is an exemplary frame structure diagram of a headphone according to some embodiments of this specification. For example... Figure 2 As shown, the headphone 200 may include a bone conduction vibrator 210, an air conduction vibrator 220, and a control circuit 230.

[0049] Bone conduction vibrator 210 is configured to generate bone conduction sound. Bone conduction sound refers to sound waves that are conducted through a solid medium (e.g., bone) in the form of mechanical vibrations. In some embodiments, bone conduction vibrator 210 can generate bone conduction sound within a specific frequency range (e.g., low frequency range, high frequency range, mid-low frequency range, mid-high frequency range, etc.). In some embodiments, the low frequency range (also referred to as low frequency) may refer to a frequency range of 20Hz-150 Hz, the mid-low frequency range (also referred to as mid-low frequency) may refer to a frequency range of 150Hz-500 Hz, the mid-high frequency range (also referred to as mid-high frequency) may refer to a frequency range of 500Hz-5kHz, and the high frequency range (also referred to as high frequency) may refer to a frequency range of 5kHz-20kHz. As another example, the low frequency range may refer to a frequency range of 20Hz-300 Hz, the mid-low frequency range may refer to a frequency range of 100Hz-1000 Hz, the mid-high frequency range may refer to a frequency range of 1000Hz-10kHz, and the high frequency range may refer to a frequency range of 3kHz-20kHz. It should be noted that the frequency range values ​​are for illustrative purposes only and are not restrictive. The above definition of frequency range can vary depending on different application scenarios and classification criteria. For example, in some other application scenarios, the low-frequency range can be 20Hz-80Hz, the mid-low-frequency range can be 80Hz-160Hz, the mid-high-frequency range can be 1280Hz-2560Hz, and the high-frequency range can be 2560Hz-20kHz. Optionally, different frequency ranges may or may not have overlapping frequencies.

[0050] In some embodiments, bone-conducted sound generated by the bone conduction vibrator 210 is transmitted to the outside through a contact surface on the shell of the earphone 200 (e.g., shell 240 hereinafter) that contacts the user. The material and thickness of the contact surface on the shell can affect the transmission of bone-conducted sound to the user, thereby affecting sound quality. For example, if the material of the contact surface is relatively flexible, the transmission efficiency of bone-conducted sound in the low-frequency range will be better than that in the high-frequency range. Conversely, if the material of the contact surface is relatively rigid, the transmission efficiency of bone-conducted sound in the high-frequency range will be better than that in the low-frequency range. In some embodiments, to improve the comfort of the user when wearing the earphone 200, the material of the contact surface can be relatively flexible, in which case the low-frequency and / or mid-low-frequency performance of the bone conduction vibrator 210 is better.

[0051] In some embodiments, the bone conduction vibrator 210 may include a first magnetic circuit, a vibrating plate, and a first coil. The first magnetic circuit can generate a magnetic field, causing the first coil located in the magnetic gap to vibrate under the influence of the magnetic field. The vibration of the first coil can drive the vibrating plate to vibrate. The vibrating plate is physically connected to the housing of the earphone 200, which contacts the user's skin (e.g., the skin on the user's head) and transmits bone conduction sound to the cochlea of ​​the user wearing the earphone 200.

[0052] Figure 3 These are exemplary structural diagrams of a bone conduction oscillator shown according to some embodiments of this specification. Figure 3 As shown, the bone conduction oscillator 210 includes a first magnetic circuit 211, a vibrating plate 212, and a first coil 213.

[0053] The first magnetic circuit 211 may include one or more magnetic elements and / or magnetically conductive elements configured to generate a magnetic field. In some embodiments, the first magnetic circuit 211 may include a magnetic gap in which a magnetic field is generated, and a first coil 213 is located within the magnetic gap and mechanically connected to the vibrating plate 212. In some embodiments, the first coil 213 may be electrically connected to a control circuit (such as control circuit 230 described below). When a current (which may represent a control signal) is introduced into the first coil 213, the first coil 213 may oscillate in the magnetic field and drive the vibrating plate 212 to oscillate. The vibration direction of the vibrating plate 212 may be... Figure 3 The first vibration direction shown refers to the direction in which the first coil 213 vibrates in the magnetic field, driving the vibrating plate 212 to vibrate along the first vibration direction. The vibration of the vibrating plate 212 can be transmitted to the user's bones through the shell of the earphone 200 to generate bone conduction sound. In some embodiments, the vibrating plate 212 may also be in direct contact with the user, and the vibration of the vibrating plate 212 may be directly transmitted to the user's bones to generate bone conduction sound.

[0054] Air-conducting vibrator 220 is configured to generate air-conducted sound. Air-conducted sound refers to sound waves conducted through air vibrations. In some embodiments, air-conducting vibrator 220 can generate air-conducted sound within a specific frequency range (e.g., low-frequency range, high-frequency range, mid-low-frequency range, mid-high-frequency range, etc.). In some embodiments, air-conducting vibrator 220 has better mid-high and / or high-frequency performance compared to bone-conducting vibrator 210. In some embodiments, air-conducting vibrator 220 can generate air-conducted sound within the same or different frequency range as the vibration of bone-conducting vibrator 210. For example, when bone-conducting vibrator 210 and air-conducting vibrator 220 operate simultaneously, the bone-conducted sound generated by bone-conducting vibrator 210 may include more low-frequency components, while the air-conducted sound generated by air-conducting vibrator 220 includes more high-frequency components. For example, when the bone conduction oscillator 210 works alone (i.e., the bone conduction oscillator 210 works while the air conduction oscillator 220 does not work), the bone conduction sound generated by the bone conduction oscillator 210 includes the full frequency range of sound; or when the air conduction oscillator 220 works alone (i.e., the air conduction oscillator 220 works while the bone conduction oscillator 210 does not work), the air conduction sound generated by the air conduction oscillator 210 includes the full frequency range of sound.

[0055] In some embodiments, the air-conducting vibrator 220 may include a diaphragm, a second magnetic circuit, and a second coil. The second magnetic circuit can generate a magnetic field, causing the second coil located in the magnetic gap to vibrate under the influence of the magnetic field. The vibration of the second coil can drive the diaphragm to vibrate. The vibration of the diaphragm drives the vibration of the air in the housing of the earphone 200 (e.g., housing 240 hereinafter). The air vibration in the housing can be transmitted outward to generate air-conducted sound. For example, the air vibration in the housing can be transmitted outward through a sound guide hole on the housing to generate air-conducted sound.

[0056] Figure 4 These are exemplary structural diagrams of an air-conducting oscillator shown according to some embodiments of this specification. For example... Figure 4 As shown, the air-conducting oscillator 220 includes a diaphragm 221, a second magnetic circuit 222, and a second coil 223.

[0057] The second magnetic circuit 222 may include one or more magnetic elements and / or magnetically conductive elements configured to generate a magnetic field. In some embodiments, the second magnetic circuit 222 may include a magnetic gap in which a magnetic field is generated, and a second coil 223 is located within the magnetic gap and mechanically connected to the diaphragm 221. In some embodiments, the second coil 223 may be electrically connected to a control circuit (such as control circuit 230 described below). When a current (which may represent a control signal) is introduced into the second coil 223, the second coil 223 may vibrate in the magnetic field and drive the diaphragm 221 to vibrate. The direction of vibration of the diaphragm 221 may be... Figure 4The second vibration direction shown is the direction in which the second coil 223 drives the diaphragm 221 to vibrate when it vibrates in the magnetic field. The vibration of the diaphragm 221 can cause the air in the shell of the earphone 200 to vibrate, generating air-conducted sound. Furthermore, the air-conducted sound can be transmitted to the user's ear canal through the sound guide hole on the shell.

[0058] The control circuit 230 is configured to perform switching operations in multiple operating states of the headphone 200. Figure 5A These are schematic diagrams illustrating various operating states of the headphones and their switching methods according to some embodiments of this specification. For example... Figure 5A As shown, in some embodiments, the multiple operating states of the earphone 200 may include the operating state when the air-conducting vibrator 220 operates alone and the operating state when the bone-conducting vibrator 210 operates alone. In some embodiments, the operating states of the earphone 200 may also include the operating state when the bone-conducting vibrator 210 and the air-conducting vibrator 220 operate simultaneously.

[0059] In some embodiments, the bone conduction vibrator 210 and the air conduction vibrator 220 can be controlled by the control circuit 230, respectively. For example, the control circuit 230 can be electrically connected to the bone conduction vibrator 210 (e.g., the first coil 213) to control the operating state of the bone conduction vibrator 210; the control circuit 230 can be electrically connected to the air conduction vibrator 220 (e.g., the second coil 223) to control the operating state of the air conduction vibrator 220. In some embodiments, the control circuit 230 can switch the operating state of the earphone 200 from the operating state when the air conduction vibrator 220 operates alone to the operating state when the bone conduction vibrator 210 operates alone (e.g., ...). Figure 5A The switching mode shown is ①). In some embodiments, the control circuit 230 can switch the operating state of the earphone 200 from the operating state when the bone conduction vibrator 210 is working alone to the operating state when the air conduction vibrator 220 is working alone (e.g., Figure 5A (Switching mode ② shown). In some embodiments, the control circuit 230 can switch the operating state of the earphone 200 from the operating state when the air-conducting vibrator 220 works alone to the operating state when the bone-conducting vibrator 210 and the air-conducting vibrator 220 work simultaneously (e.g., Figure 5A (Switching mode ③ shown). In some embodiments, the control circuit 230 can switch the operating state of the earphone 200 from the operating state when the bone conduction vibrator 210 works alone to the operating state when the bone conduction vibrator 210 and the air conduction vibrator 220 work simultaneously (e.g., Figure 5A The switching mode shown is ④). In some embodiments, the control circuit 230 can switch the operating state of the earphone 200 from the operating state when the bone conduction vibrator 210 and the air conduction vibrator 220 are working simultaneously to the operating state when the air conduction vibrator 220 is working alone (e.g., Figure 5AThe switching mode shown is ⑤). In some embodiments, the control circuit 230 can switch the operating state of the earphone 200 from the operating state when the bone conduction vibrator 210 and the air conduction vibrator 220 are working simultaneously to the operating state when the bone conduction vibrator 210 is working alone (e.g., Figure 5A The switching method shown is ⑥).

[0060] Taking the switching of the working state of the earphone 200 from the working state of the air-conducting vibrator 220 working alone to the working state of the bone-conducting vibrator 210 working alone as an example, the switching process is illustrated as follows: When the working state of the earphone 200 is that the air-conducting vibrator 220 is working alone, the control circuit 230 controls the current to be introduced into the second coil 223 (for example, a circuit is formed between the power supply and the second coil 223). The second coil 223 vibrates in the magnetic field and drives the diaphragm 221 to vibrate, thereby generating air-conducted sound. At this time, no current is introduced into the first coil 213 (for example, an open circuit is formed between the power supply and the first coil 213), and the bone-conducting vibrator 210 is not working. When switching the headphone state (i.e., switching the working state of the headphone 200 from the working state of the air conduction vibrator 220 working alone to the working state of the bone conduction vibrator 210 working alone), the control circuit 230 controls the current (which can represent a control signal) to be introduced into the first coil 213 (for example, a circuit is formed between the power supply and the first coil 213). The first coil 213 vibrates in the magnetic field and drives the vibrating plate 212 to vibrate, thereby generating bone conduction sound. At this time, no current is introduced into the second coil 223 (for example, an open circuit is formed between the power supply and the second coil 223), and the air conduction vibrator 220 does not work, thereby completing the switching of the headphone working state.

[0061] By using control circuitry to switch the headphones between various working states, the headphones can operate in the appropriate state in different scenarios, improving their flexibility and thus enhancing the user experience.

[0062] In some embodiments, the multiple operating states of the headphones 200 include a first operating state and a second operating state. Figure 5B This is an exemplary flowchart illustrating a headphone state switching method according to some embodiments of this specification. Figure 5B As shown, process 500 may include: step 510, receiving a control signal; step 520, performing a switch from a first operating state to a second operating state in response to the control signal. In some embodiments, process 500 may be executed by control circuitry 230.

[0063] A control signal refers to a signal that controls the control circuit 230 to perform headphone state switching operations. In some embodiments, the control signal may originate from a user-generated command. In some embodiments, the control signal may originate from a command generated by a sensor on the headphone detecting changes in environmental parameters. More information regarding the sources of control signals can be found in the following description.

[0064] In some embodiments, the first operating state may refer to the operating state when the air-guided oscillator 220 operates alone, and the second operating state may refer to the operating state when the bone-guided oscillator 210 operates alone. In this case, the control circuit 230 responds to the control signal to switch from the operating state when the air-guided oscillator 220 operates alone to the operating state when the bone-guided oscillator 210 operates alone (i.e., executes...). Figure 5A The switching method shown is ①). For details on this part, please refer to the following embodiment (I).

[0065] In some embodiments, the first operating state may refer to the operating state when the bone conduction vibrator 210 operates alone, and the second operating state refers to the operating state when the air conduction vibrator 220 operates alone. In this case, the control circuit 230 responds to the control signal to switch from the operating state when the bone conduction vibrator 210 operates alone to the operating state when the air conduction vibrator 220 operates alone (i.e., executes...). Figure 5A The switching method shown is ②). For details of this part, please refer to Example (II) below.

[0066] In some embodiments, the first working state may refer to the working state when the bone-guided vibrator 210 and the air-guided vibrator 220 work simultaneously, and the second working state refers to the working state when either the bone-guided vibrator 210 or the air-guided vibrator 220 works alone. In this case, the control circuit 230 responds to the control signal to switch from the working state when the bone-guided vibrator 210 and the air-guided vibrator 220 work simultaneously to the working state when either the bone-guided vibrator 210 or the air-guided vibrator 220 works alone (i.e., executes...). Figure 5A The switching method shown in step ⑥, or execution Figure 5A The switching method shown is ⑤). For details on this part, please refer to Example (III) below.

[0067] In some embodiments, the first working state may refer to the working state when the bone-guided vibrator 210 or the air-guided vibrator 220 works alone, and the second working state refers to the working state when the bone-guided vibrator 210 and the air-guided vibrator 220 work simultaneously. In this case, the control circuit 230 responds to the control signal to switch from the working state when the bone-guided vibrator 210 or the air-guided vibrator 220 works alone to the working state when the bone-guided vibrator 210 and the air-guided vibrator 220 work simultaneously (i.e., executes...). Figure 5A The switching method shown is ④, or you can execute... Figure 5AThe switching method shown is ③). For details on this part, please refer to the following embodiment (IV).

[0068] In some embodiments, the headset 200 may be equipped with control keys, and the control signals originate from commands generated by user operation of the control keys. In some embodiments, the control keys may be mechanical keys (such as buttons) on the headset 200, and the user generates control signals by pressing the control keys. In some embodiments, the control keys may be sensor keys on the headset 200, and the user generates control signals by touching or tapping the sensor keys or sliding on the sensor keys. In some embodiments, the user can also control the switching of the working state of the headset 200 through a terminal device (e.g., a mobile phone, computer, etc.). For example, the terminal device and the headset 200 are connected via a network, an application is installed on the terminal device, and the user controls the switching of the working state of the headset 200 through the application.

[0069] In some embodiments, users can actively switch the working state of the headphones 200 using the control keys according to their own needs or in combination with the actual scenario. For example, if the headphones 200 is in a high-noise environment, external noise may drown out the air-conducted sound generated by the air-conducting vibrator. In this case, in order to ensure the listening volume, the user can operate the control keys to generate a control signal, and the control circuit 230 responds to the control signal to switch from the working state when the air-conducting vibrator works alone to the working state when the bone-conducting vibrator works alone. As another example, in order to reduce the vibration generated by the headphones 200 (which is mainly generated by the vibration of the vibrating plate 212 of the bone-conducting vibrator 210) and improve the comfort of wearing the headphones 200, the user can operate the control keys to generate a control signal, and the control circuit 230 responds to the control signal to switch from the working state when the bone-conducting vibrator works alone to the working state when the air-conducting vibrator works alone.

[0070] By setting control buttons on the headphones, users can actively switch the working status of the headphones according to actual needs, improving the flexibility of using the headphones.

[0071] Example 1

[0072] In this embodiment, the first operating state is the operating state when the air-guided oscillator operates alone, and the second operating state is the operating state when the bone-guided oscillator operates alone. The control circuit responds to the control signal to switch from the first operating state to the second operating state, that is, to switch from the operating state when the air-guided oscillator operates alone to the operating state when the bone-guided oscillator operates alone.

[0073] In some embodiments, the air-conducted sound generated by the air-conducting vibrator is discharged through the sound guide hole on the housing. When the headphones are in a high-humidity environment (e.g., rainy days, swimming), the sound output of the air-conducting vibrator may be affected. However, the bone-conducting vibrator transmits bone-conducted sound to the user's cochlea through contact with the user's skin, and its sound output is not affected in this scenario. Therefore, to ensure that the sound output of the headphones 200 is not affected and to guarantee the user's listening experience, the control circuit can switch between the operating state when the air-conducting vibrator operates alone and the operating state when the bone-conducting vibrator operates alone.

[0074] In some embodiments, the air-conducting sound generated by the air-conducting vibrator is transmitted to the user's ear canal through air vibration. When the headphones are in a high-noise environment (e.g., a construction site (such as renovation or road construction), or a noisy crowd), the air-conducting sound generated by the air-conducting vibrator may be drowned out by ambient noise (because ambient noise is conducted through the air). In contrast, the bone-conducting vibrator transmits bone-conducting sound to the user's cochlea through contact with the user's skin. In this scenario, the bone-conducting sound generated by the bone-conducting vibrator is not affected by ambient noise. Therefore, to ensure the user's listening volume, the control circuit can switch between the operating state when the air-conducting vibrator operates alone and the operating state when the bone-conducting vibrator operates alone.

[0075] In some embodiments, the earphone 200 is provided with a sensor that detects at least one environmental parameter, and the control signal is derived from the change in the value of the environmental parameter satisfying a first preset condition.

[0076] In some embodiments, the sensor may include one or more types. In some embodiments, the sensor may include, but is not limited to, one or more of a weight sensor, pressure sensor, hydraulic sensor, noise sensor, etc. Different types of sensors are configured to detect different environmental parameters. For example, a weight sensor is configured to detect the weight of liquid at a specific location on the headphones. As another example, a noise sensor is configured to detect ambient noise.

[0077] The first preset condition can be a condition used to measure whether the change in the value of environmental parameters meets the condition for switching the headphone state (e.g., switching from the working state when the air conduction vibrator is working alone to the working state when the bone conduction vibrator is working alone). For example, when the change in the value of the environmental parameters meets the first preset condition, it indicates that the environment in which the headphones are located has changed. At this time, the control circuit switches the working state of the headphones based on the control signal.

[0078] In some embodiments, the first preset conditions may be pre-stored in a storage device.

[0079] In some embodiments, environmental parameters may include the weight of liquid at a specific location on the headphones, with a first preset condition being that the liquid weight exceeds a first threshold.

[0080] As an example, the sensor for detecting the weight of liquid at a specific location on the headphones can be a weight sensor, which detects the weight of liquid at that specific location on the headphones. The specific location on the headphones can be a position on a specific surface of the headphones. For example, the specific location could be the surface of the headphones facing the user's head when worn (e.g., in a rainy situation, the liquid is mainly located on the surface of the headphones facing the user's head, making measurement easier). The first threshold can refer to an upper limit threshold for the liquid weight value. In some embodiments, when the weight sensor detects that the liquid weight exceeds the first threshold (i.e., the change in the environmental parameter value meets a first preset condition), it indicates that the headphones are in a state of being soaked or contaminated by liquid (e.g., in rainy weather, during strenuous exercise with heavy sweating, water activities, etc.). In this case, to ensure that the sound output of the headphones is not affected and to guarantee the user's listening experience, the control circuit can switch between the operating state when the air-conducting vibrator works alone and the operating state when the bone-conducting vibrator works alone.

[0081] In some embodiments, when the first threshold is the upper limit of the liquid weight value, the first threshold can be reasonably set according to the actual situation. In some embodiments, in order to improve the accuracy of judging changes in environmental parameters and more accurately judge changes in the environment in which the headphones are located, the first threshold can be set to a smaller value. In some embodiments, in certain scenarios (e.g., a small amount of sweating caused by exercise, drizzle, etc.), the influence of liquid on the sound generation of the air-conducting oscillator can be disregarded, and in this case, the first threshold can be set to a relatively larger value.

[0082] In some embodiments, the sensor may also be a hydraulic sensor, which detects the liquid pressure at a specific location on the headphones. In this case, the first threshold refers to the upper limit of the liquid pressure value. In some embodiments, when the hydraulic sensor detects that the liquid pressure exceeds the first threshold (i.e., the change in the environmental parameter value meets a first preset condition), it indicates that the headphones are in a state of being immersed or contaminated by liquid (such as during swimming or rain). In this case, to ensure that the sound output of the headphones is not affected and to guarantee the user's listening experience, the control circuit can switch between the operating state when the air-conducting vibrator works alone and the operating state when the bone-conducting vibrator works alone.

[0083] In some embodiments, when the first threshold is an upper limit threshold of the liquid pressure value, the first threshold may not be less than 1.013 × 10⁻⁶. 5 Pa. As an example, the first threshold could be 1.013 × 10⁻⁶. 5 Pa. In some embodiments, taking into account the depth of the headphones immersed in the liquid (e.g., 10 mm), the first threshold can be 1.013 × 10⁻⁶. 5Pa + 98 Pa. In some embodiments, taking into account the depth of the headphones immersed in the liquid (e.g., 100 mm), the first threshold can be 1.013 × 10⁻⁶ Pa. 5 Pa + 980Pa. This is merely an illustrative example; the first threshold described above can be used in swimming scenarios. In some embodiments, to improve the accuracy of judging changes in environmental parameters and more precisely determine changes in the environment in which the headphones are located, the first threshold can be set relatively small. In some embodiments, in certain scenarios (e.g., minor sweating due to exercise, drizzle, etc.), the influence of liquid on the sound generation of the air-conducting oscillator can be disregarded; in this case, the first threshold can be set relatively large.

[0084] In some embodiments, a sensor (such as a liquid sensor or a capacitance sensor) may be placed in the sound propagation path of the air-conducting oscillator or on the diaphragm of the air-conducting oscillator. The sensor detects whether the air-conducting oscillator is immersed in liquid. When the sensor detects liquid, the control circuit can switch from the operating state when the air-conducting oscillator operates alone to the operating state when the bone-conducting oscillator operates alone. In some embodiments, the sensor may include a liquid sensor placed in the sound propagation path of the air-conducting oscillator. When liquid is immersed, the liquid sensor detects the liquid, and the control circuit switches from the operating state when the air-conducting oscillator operates alone to the operating state when the bone-conducting oscillator operates alone. In some embodiments, the sensor may include a capacitance sensor placed on the diaphragm of the air-conducting oscillator (e.g., attached to the diaphragm surface). When liquid is immersed in the diaphragm surface, the capacitance value of the capacitance sensor changes, and the control circuit switches from the operating state when the air-conducting oscillator operates alone to the operating state when the bone-conducting oscillator operates alone.

[0085] By setting sensors on the headphones to detect the weight (or pressure) of liquid at specific locations on the headphones, and by setting a reasonable first threshold, when the headphones are immersed or contaminated with liquid (such as in rainy weather, heavy sweating during exercise, or water activities), the control circuit can switch the headphones from the working state when the air conduction vibrator is working alone to the working state when the bone conduction vibrator is working alone. This ensures that the sound output of the headphones is not affected, thus guaranteeing the user's listening experience.

[0086] In some embodiments, environmental parameters may include the volume of ambient noise, with a first preset condition being that the volume of ambient noise exceeds a second threshold.

[0087] In some embodiments, the sensor for detecting the volume of ambient noise can be a noise sensor, such as a microphone. The microphone is used to detect the volume of ambient noise. In some embodiments, the microphone for detecting ambient noise and the microphone in the headphones used to collect user voice signals can be the same microphone. In some embodiments, multiple microphones can also be provided in the headphones, for example, two microphones, one for detecting ambient noise and the other for collecting user voice signals. The second threshold can refer to an upper limit threshold for the ambient noise volume value. In some embodiments, when the noise sensor detects that the volume of ambient noise exceeds the second threshold (i.e., the change in the value of the environmental parameter meets the first preset condition), it indicates that the headphones are in a high-noise environment (e.g., a construction site, a noisy environment, etc.). At this time, in order to ensure the user's listening effect, the control circuit can switch from the working state when the air-conducting oscillator works alone to the working state when the bone-conducting oscillator works alone (or the bone-conducting oscillator and the air-conducting oscillator work simultaneously).

[0088] In some embodiments, the second threshold may be in the range of 60dB-90dB. As an example, the second threshold may be 85dB. In some embodiments, the second threshold may be set lower to improve the listening experience for users (such as those with hearing impairments).

[0089] By setting a sensor on the headphones to detect the volume of ambient noise and reasonably setting a second threshold, the control circuit can switch the headphones from the working state when the air conduction oscillator is working alone to the working state when the headphones are in a high noise environment, thereby ensuring the user's listening effect.

[0090] It is understandable that when the headphones are in the working state of the bone conduction oscillator working alone, if the changes in the environmental parameters meet the first preset condition (the liquid weight exceeds the first threshold, or the volume of the environmental noise exceeds the second threshold), the headphones will not switch states, that is, the headphones will remain in the working state of the bone conduction oscillator working alone.

[0091] In some embodiments, the control signal may also originate from the change in the value of environmental parameters satisfying a time threshold. The time threshold refers to a pre-set time range. For example, the time threshold could be 5 seconds, 30 seconds, 1 minute, 3 minutes, 5 minutes, 10 minutes, etc. In this case, the control signal originates from the change in the value of environmental parameters continuously satisfying a first preset condition within the time threshold. As an example, when the noise sensor detects that the volume of ambient noise continuously exceeds a second threshold (i.e., the change in the value of environmental parameters satisfies the first preset condition) within a time threshold (e.g., 3 minutes), it indicates that the headphones have been in a high-noise environment for a long time (e.g., a construction site, a noisy environment, etc.). In this case, to ensure the user's listening experience, the control circuit can switch between the working state when the air-conducting vibrator works alone and the working state when the bone-conducting vibrator works alone. By setting a time threshold, repeated state switching of the headphones can be avoided. For example, in a low-noise environment (where the impact of noise on air-conducted sound is not considered), occasional high-noise sounds (e.g., screams) may occur. Since these high-noise sounds are occasional and short-lived, the headphones do not need to switch states in this case.

[0092] In the embodiments described in this specification, the control circuit automatically switches the working state of the headphones based on the changes in the values ​​of environmental parameters detected by the sensors, which is more intelligent and can improve the user experience.

[0093] Example (II)

[0094] In this embodiment, the first working state is the working state when the bone-guided oscillator works alone, and the second working state is the working state when the air-guided oscillator works alone. The control circuit responds to the control signal to switch from the first working state to the second working state, that is, to switch from the working state when the bone-guided oscillator works alone to the working state when the air-guided oscillator works alone.

[0095] In some embodiments, bone conduction sound generated by the bone conduction vibrator is transmitted to the user's cochlea in the form of vibration (such as skull vibration). This vibration transmission can cause a relatively strong vibration sensation and even discomfort. In contrast, air conduction sound generated by the air conduction vibrator is transmitted to the user's ear canal through air vibration, without causing a noticeable vibration sensation. Based on this, when the headphones are in a relatively dry environment (i.e., there is no need to consider the influence of liquid on the sound generation of the air conduction vibrator) or in a low-noise environment (i.e., there is no need to consider the influence of ambient noise on the air conduction sound generated by the air conduction vibrator), in order to reduce the vibration sensation caused to the user by the headphones (especially the bone conduction vibrator) and improve the listening experience, the control circuit can switch the headphones from the working state when the bone conduction vibrator is working alone to the working state when the air conduction vibrator is working alone.

[0096] In some embodiments, the control signal may originate from changes in the values ​​of environmental parameters that satisfy a second preset condition.

[0097] The second preset condition can be used to measure whether the change in the value of environmental parameters meets the condition for switching the headphone state (the switching from the working state when the bone conduction oscillator is working alone to the working state when the air conduction oscillator is working alone). For example, when the change in the value of environmental parameters meets the second preset condition, it indicates that the environment in which the headphones are located has changed. At this time, the control circuit switches the working state of the headphones based on the control signal.

[0098] In some embodiments, the second preset conditions may be pre-stored in a storage device.

[0099] In some embodiments, environmental parameters may include the weight of liquid at a specific location on the earphone, with a second preset condition being that the liquid weight is less than a third threshold.

[0100] As an example, the sensor that detects the weight of liquid at a specific location on the headphones can be a weight sensor. The third threshold can refer to a lower limit threshold for the liquid weight value. In some embodiments, when the weight sensor detects that the liquid weight is less than the third threshold (i.e., the change in the environmental parameter value meets a second preset condition), it indicates that the headphones are in a relatively dry environment, and there is little or no liquid on the headphones, which has virtually no impact on the sound production of the air-conducting oscillator. In this case, in order to reduce the vibration sensation caused to the user by the headphones (especially the bone conduction oscillator) and improve the listening experience, the control circuit can switch the headphones from the working state when the bone conduction oscillator is working alone to the working state when the air conduction oscillator is working alone.

[0101] In some embodiments, when the third threshold is the lower limit of the liquid weight value, the third threshold can be reasonably set according to the actual situation. In some embodiments, a small amount of liquid may also affect the sound production of the air-conducting oscillator. To avoid abnormal sound production in the headphones, the third threshold can be set to a larger value.

[0102] In some embodiments, the sensor can also be a hydraulic sensor, which detects the liquid pressure at a specific location on the headphones. The third threshold refers to the lower limit of the liquid pressure value. In some embodiments, when the hydraulic sensor detects that the liquid pressure is less than the third threshold (i.e., the change in the environmental parameter value meets the second preset condition), it indicates that the headphones are in a relatively dry environment, and there is little or no liquid on the headphones, which has virtually no impact on the sound output of the air-conducting vibrator. At this time, in order to reduce the vibration sensation caused to the user by the headphones (especially the bone conduction vibrator) and improve the listening experience, the control circuit can switch the headphones from the working state when the bone conduction vibrator is working alone to the working state when the air conduction vibrator is working alone.

[0103] In some embodiments, when the third threshold is a lower limit threshold of the liquid pressure value, the third threshold may be less than 1.013 × 10⁻⁶. 5 Pa. In some embodiments, a small amount of liquid may also affect the sound production of the air-conducting oscillator. To avoid abnormal sound production in the headphones, the third threshold can be set to a larger value.

[0104] By setting sensors on the headphones to detect the weight (or pressure) of liquid at specific locations on the headphones, and by setting a reasonable third threshold, the control circuit can switch the headphones from working state when the bone conduction vibrator is working alone to working state when the headphones are in a relatively dry environment. This reduces the vibration sensation caused to the user by the headphones (especially the bone conduction vibrator) and improves the listening experience.

[0105] In some embodiments, environmental parameters may include the volume of ambient noise, and a second preset condition is that the volume of ambient noise is less than a fourth threshold.

[0106] The fourth threshold can refer to the lower limit of the ambient noise volume. In some embodiments, when the noise sensor detects that the ambient noise volume is less than the fourth threshold (i.e., the change in the value of the environmental parameter meets the second preset condition), it indicates that the headphones are in a low-noise environment, and the ambient noise has little or negligible impact on the air-conducted sound generated by the air-conducting vibrator. At this time, in order to reduce the vibration sensation caused to the user by the headphones (especially the bone conduction vibrator) and improve the listening experience, the control circuit can switch the headphones from the working state when the bone conduction vibrator is working alone to the working state when the air conduction vibrator is working alone.

[0107] In some embodiments, the fourth threshold may be less than 50 dB. In some embodiments, even small ambient noise can affect the air-conducted sound generated by the air-conducting oscillator to some extent, which will affect the hearing effect of people with hearing loss. Therefore, in order to meet the hearing needs of people with hearing loss, the fourth threshold can be set to a larger value.

[0108] By setting a sensor on the headphones to detect the volume of ambient noise and reasonably setting a fourth threshold, when the headphones are in a low-noise environment, the control circuit can switch the headphones from the working state when the bone conduction oscillator is working alone to the working state when the air conduction oscillator is working alone. This reduces the vibration sensation caused to the user by the headphones (especially the bone conduction oscillator) and improves the listening experience.

[0109] It is understandable that when the headphones are in the working state of the air-conducting oscillator working alone, if the change in the value of the environmental parameters meets the second preset condition (the liquid weight is less than the third threshold, or the volume of the environmental noise is less than the fourth threshold), the headphones will not switch states, that is, the headphones will remain unchanged in the working state of the air-conducting oscillator working alone.

[0110] In some embodiments, the control signal may also originate from changes in environmental parameters that satisfy a time threshold. The time threshold refers to a pre-defined time range. For example, the time threshold could be 5 seconds, 30 seconds, 1 minute, 3 minutes, 5 minutes, 10 minutes, etc. In this case, the control signal originates from changes in environmental parameters that continuously satisfy a second preset condition within the time threshold. As an example, when the noise sensor detects that the volume of ambient noise is less than a fourth threshold within a time threshold (e.g., 3 minutes) (i.e., the changes in environmental parameters satisfy the second preset condition), it indicates that the headphones have been in a low-noise environment for an extended period. In this case, to reduce the vibration sensation caused by the headphones (especially the bone conduction oscillator) and improve the listening experience, the control circuit can switch between the working state when the bone conduction oscillator is working alone and the working state when the air conduction oscillator is working alone. By setting a time threshold, repeated state switching of the headphones can be avoided.

[0111] In some embodiments, the control circuit may switch between the working state when the bone conduction vibrator is working alone and the working state when the air conduction vibrator is working alone, depending on the battery level of the headphones. For example, when the headphone battery level is below a battery threshold (such as 10%, 20%, etc.), in order to reduce power consumption and extend usage time, the control circuit switches between the working state when the bone conduction vibrator is working alone and the working state when the air conduction vibrator is working alone.

[0112] Example (3)

[0113] In this embodiment, the first operating state is the operating state when the bone-guided oscillator and the air-guided oscillator work simultaneously, and the second operating state is the operating state when either the bone-guided oscillator or the air-guided oscillator works alone. The control circuit responds to the control signal to switch from the first operating state to the second operating state, that is, to switch from the operating state when the bone-guided oscillator and the air-guided oscillator work simultaneously to the operating state when either the bone-guided oscillator or the air-guided oscillator works alone.

[0114] In some embodiments, the control circuit can switch between a working state where the bone conduction oscillator and the air conduction oscillator operate simultaneously and a working state where the bone conduction oscillator operates alone. For example, when the headphones are in a high-humidity environment, in order to prevent liquid from affecting the sound output of the air conduction oscillator, the control circuit can switch between a working state where the bone conduction oscillator and the air conduction oscillator operate simultaneously and a working state where the bone conduction oscillator operates alone.

[0115] In some embodiments, the control circuit can switch between a working state where the bone conduction oscillator and the air conduction oscillator operate simultaneously and a working state where the air conduction oscillator operates alone. For example, in order to reduce the vibration sensation caused to the user by the headphones (especially the bone conduction oscillator) and improve the listening experience, the control circuit can switch between a working state where the bone conduction oscillator and the air conduction oscillator operate simultaneously and a working state where the air conduction oscillator operates alone.

[0116] In some embodiments, the control circuit can also switch between operating states where both bone conduction and air conduction vibrators are working simultaneously, and operating states where only the air conduction vibrator or only the bone conduction vibrator is working, depending on the headphone's battery level. For example, when the headphone's battery level is below a threshold (e.g., 10%, 20%), in order to reduce power consumption and extend usage time, the control circuit switches between operating states where both bone conduction and air conduction vibrators are working simultaneously, and operating states where only the air conduction vibrator or only the bone conduction vibrator is working.

[0117] Example (4)

[0118] In this embodiment, the first operating state is the operating state when the bone-guided oscillator or the air-guided oscillator operates alone, and the second operating state is the operating state when the bone-guided oscillator and the air-guided oscillator operate simultaneously. The control circuit responds to the control signal to switch from the first operating state to the second operating state, that is, to switch from the operating state when the bone-guided oscillator or the air-guided oscillator operates alone to the operating state when the bone-guided oscillator and the air-guided oscillator operate simultaneously.

[0119] In some embodiments, as described above Figures 3-4 As described, bone conduction oscillators have better low-frequency (or low-mid-frequency) performance, while air conduction oscillators have better high-frequency (or mid-high-frequency) performance. For example, bone conduction oscillators have better voice output performance in the 50Hz-500Hz frequency range, while air conduction oscillators have better voice output performance in the range greater than 1000Hz-3000Hz. Switching the headphones to a mode where both bone conduction and air conduction oscillators are working simultaneously allows the low-frequency sound of the bone conduction oscillators to complement the high-frequency sound of the air conduction oscillators, thereby improving the acoustic performance of the headphones.

[0120] In some embodiments, the frequency response of a single oscillator (bone conduction oscillator or air conduction oscillator) operating alone may differ from the frequency response of a single oscillator operating simultaneously with both oscillators. For example, when the bone conduction oscillator operates alone, its frequency response will cover a wider frequency range (e.g., low to high frequencies) to accommodate the sound output of the headphones over a broader frequency range. When the bone conduction oscillator and air conduction oscillator operate simultaneously, their frequency response can primarily cover the mid-to-high frequency range to reduce the low-frequency vibration of the bone conduction oscillator. In some embodiments, the frequency response curve of the oscillator (bone conduction oscillator or air conduction oscillator) can be adjusted using a filter. For example, the frequency response curve can be adjusted by controlling the connection state between the oscillator and the filter (e.g., connected or disconnected). In some embodiments, the frequency response curve of the oscillator can be tested by providing an initial signal (the signal before filtering) to the oscillator and analyzing the oscillator's sound output to obtain its spectral characteristics.

[0121] It should be noted that the switching of working states in different scenarios described in the embodiments of this specification is only an exemplary illustration. In other embodiments, other optional switching methods can also be performed in the same scenario, and any other feasible switching methods are within the protection scope of this specification. For example, in high-noise scenarios, in order to ensure the listening volume, the control circuit can also perform a switch from the working state when the air-conducting oscillator works alone to the working state when the bone-conducting oscillator and the air-conducting oscillator work simultaneously.

[0122] Figure 6 These are exemplary structural diagrams of headphones according to some embodiments shown in this specification. Figure 6 As shown, the earphone 200 also includes a housing 240, with a bone conduction vibrator 210 and an air conduction vibrator 220 located inside the housing 240.

[0123] In some embodiments, the housing 240 may include a first portion 241 and a second portion 242. The first portion 241 and the second portion 242 are fastened together to form an internally hollow frame. The bone conduction vibrator 210 and the air conduction vibrator 220 are located in the hollow portion inside the housing 240. In some embodiments, the diaphragm of the first portion 241 and the air conduction vibrator 220 may form a first chamber, from which air-conducted sound waves generated by the air conduction vibrator 220 can be transmitted to the outside of the earphone 200. The second portion 242 and the diaphragm of the air conduction vibrator 220 form a second chamber. The bone conduction vibrator 210 is located in the second chamber.

[0124] In some embodiments, the vibrating plate of the bone conduction vibrator 210 is physically connected to the face-contact side of the housing 240 (second part 242). The bone conduction sound generated by the bone conduction vibrator 210 is transmitted to the user's bones through the face-contact side of the housing 240, thereby transmitting the bone conduction sound to the cochlea of ​​the user wearing the headphones 200. In some embodiments, the face-contact side of the housing 240 may refer to the side surface of the housing 240 that is in contact with the user's face when worn.

[0125] In some embodiments, the air-conducting vibrator 220 has sound-guiding holes on its front and rear sides, respectively. The air-conducting vibrator 220 emits sound through the two sound-guiding holes on the front and rear sides of the diaphragm, with one of the sound-guiding holes pointing towards the ear canal opening. In some embodiments, the front side of the diaphragm can refer to the side of the diaphragm that faces away from the second magnetic circuit. For example... Figure 4 As shown, the front side of the diaphragm 221 refers to the side of the diaphragm 221 that faces away from the second magnetic circuit 222. The rear side of the diaphragm can refer to the side of the diaphragm that faces the second magnetic circuit. For example... Figure 4 As shown, the rear side of diaphragm 221 refers to the side of diaphragm 221 facing the second magnetic circuit 222.

[0126] In some embodiments, such as Figure 6 As shown, a sound guide hole 2411 may be provided on the rear side of the diaphragm of the air-conducting vibrator 220. When the earphone 200 is in the wearing state, the sound guide hole 2411 faces the ear canal opening. The sound guide hole 2411 is acoustically connected to the first chamber. The sound guide hole 2411 is used to conduct sound through the air in the first chamber to the outside of the earphone 200 (e.g., to the user's ear canal opening).

[0127] In some embodiments, such as Figure 6 As shown, a sound guide hole 2421 may be provided on the front side of the diaphragm of the air-conducting vibrator 220. The sound guide hole 2421 is acoustically connected to the second chamber. The sound guide hole 2421 is used to conduct sound through the air in the second chamber to the outside of the earphone 200. In some embodiments, the sound guide hole 2421 may be a through hole, which can facilitate pressure balance between the second chamber of the housing 240 and the outside of the earphone 200.

[0128] In some embodiments, waterproof and breathable membranes can be provided at the sound guide holes 2411 and 2421, respectively. The waterproof and breathable membranes can, to a certain extent, separate the interior of the chambers (the first chamber and the second chamber) from the exterior of the headphones. This allows for sound transmission through the sound guide holes without obstructing air conduction, while preventing external liquids from entering the sound guide holes, thus avoiding any impact on the sound output of the air-conducting vibrator 220. By providing waterproof and breathable membranes at the sound guide holes, the waterproof and dustproof performance of the headphones can be increased.

[0129] Figure 7 This is a schematic diagram of the headphones in a wearing state according to some embodiments of this specification.

[0130] In some embodiments, such as Figure 7 As shown, the earphone 200 may also include an ear hook 250, configured to wear the shell 240 on the front side of the tragus. The front side of the tragus may be... Figure 7 The dashed box area J is shown in the figure. The shell 240 is worn on the front side of the tragus using the ear hook 250. This allows one of the headphone's sound holes (e.g., ...) to be positioned. Figure 6 The sound guide hole 2411 in the middle points to the ear canal opening, which facilitates the transmission of air-conducted sound through the sound guide hole to the ear canal opening; on the other hand, it can ensure that the face-contacting side of the shell fits better with the face, and improve the transmission effect of bone conduction sound.

[0131] In some embodiments, the ear hook 250 may include an elastic support member that, when a user wears the headphones 200, can be used to hook the headphones 200 against the ear, with the shell 240 located in front of the tragus. The elastic support member can be configured to hold the ear hook 250 in a shape that matches the user's ear, allowing the ear hook 250 to elastically deform according to the shape of the ear and the user's head. When a user wears the headphones 200, the elastic support member can adapt to users with different ear and head shapes. In some embodiments, the elastic support member may be made of a shape memory alloy with good deformation recovery capability. A shape memory alloy is a material composed of two or more metallic elements that exhibits a shape memory effect through thermoelasticity and martensitic phase transformation and its inverse transformation. In some embodiments, the shape memory alloy may include, but is not limited to, any one or more of nickel-titanium alloys, copper-zinc alloys, iron-manganese alloys, nickel-aluminum alloys, gold-cadmium alloys, etc. In some embodiments, the elastic support member may also be a support member made of other materials (e.g., organic polymer materials). In some embodiments, organic polymer materials may include any one or more of rubber, chemical fibers, plastics, etc. In some embodiments, the elastic support member may also be made of a non-shape memory alloy. In some embodiments, the wires in the elastic support can establish an electrical connection between the sound-generating oscillator (bone-conducting oscillator, air-conducting oscillator) and other components (e.g., functional component 260, etc.) to facilitate the charging of the sound-generating oscillator and data transmission.

[0132] In some embodiments, the earphone 200 may further include a functional component 260. The housing 240 and the functional component 260 may be respectively disposed at opposite ends of the ear hook 250 to maintain balance. The functional component 260 is electrically connected to the sound-generating components (bone conduction resonators and air conduction resonators) and can control the sound generation of the sound-generating components. In some embodiments, the functional component 260 may include a functional housing, a circuit board (e.g., control circuitry 230), and / or a battery. In some embodiments, the functional housing may be connected to the other end of the ear hook 250 (the end away from the sound-generating components), and the functional housing of the functional component 260 is physically connected to the housing 240 via the ear hook 250. An accommodating space may be formed inside the functional housing to accommodate the circuit board and / or the battery. In some embodiments, the circuit board (e.g., control circuitry 230) can control the sound generation of the bone conduction resonators and air conduction resonators. In some embodiments, the functional component 260 can provide power to the earphone 200. For example, the battery in functional component 260 can be electrically connected to the sound-generating component to provide power for the sound generation of the bone conduction resonator and the air conduction resonator. In some embodiments, the circuit board and the battery can be disposed in the same housing (e.g., both disposed in the functional housing). In some embodiments, the circuit board and the battery can also be disposed in two separate housings (e.g., respectively disposed in the functional housing and housing 240), and the circuit board and the battery can be electrically connected to each other via corresponding conductors, and further electrically connected to the sound-generating component via conductors.

[0133] In some embodiments, to reduce mutual interference when the two vibrators produce sound, the angle between the first vibration direction of the vibrating plate of the bone-conducting vibrator 210 in the first magnetic circuit and the second vibration direction of the diaphragm of the air-conducting vibrator 220 in the second magnetic circuit can be in the range of 45° to 135°. In some embodiments, the angle range can be 60° to 120°. In some embodiments, the angle range can be 70° to 110°. In some embodiments, the angle range can be 80° to 100°.

[0134] In some embodiments, such as Figure 6 As shown, the first vibration direction can be set to be perpendicular to the second vibration direction to reduce mutual interference between the two oscillators when they produce sound.

[0135] The basic concepts have been described above. Obviously, for those skilled in the art, the detailed disclosure above is merely illustrative and does not constitute a limitation of this application. Although not explicitly stated herein, those skilled in the art may make various modifications, improvements, and corrections to this application. Such modifications, improvements, and corrections are suggested in this application, and therefore remain within the spirit and scope of the exemplary embodiments of this application.

Claims

1. An earphone, comprising: An air-conducting oscillator is configured to generate sound conducted through the air. Bone conduction oscillator, configured to generate bone conduction sound; as well as The control circuit is configured to perform a switching operation in multiple operating states of the headphones, wherein the multiple operating states of the headphones include at least the operating states when the air-conducting vibrator or the bone-conducting vibrator operates alone.

2. The headphones according to claim 1, wherein, The headphones have multiple operating states, including a first operating state and a second operating state, and the control circuit is configured to perform the following operations: Receive control signals; and In response to the control signal, a switch is performed from the first operating state to the second operating state.

3. The headphones according to claim 2, wherein, The earphones are equipped with control buttons, and the control signals are generated by the user's operation of the control buttons.

4. The headphones according to claim 2 or 3, wherein, The first working state is the working state when the air-guided vibrator works alone, and the second working state is the working state when the bone-guided vibrator works alone.

5. The headphones according to claim 4, wherein, The earphone is equipped with a sensor that detects at least one environmental parameter, and the control signal is derived from the change in the value of the environmental parameter satisfying a first preset condition.

6. The headphones according to claim 5, wherein, The environmental parameters include the weight of liquid at a specific location on the earphone, and the first preset condition is that the weight of liquid exceeds a first threshold.

7. The earphone according to claim 5, wherein, The environmental parameters include the volume of environmental noise, and the first preset condition is that the volume of the environmental noise exceeds a second threshold.

8. The headphones according to claim 2 or 3, wherein, The first working state is the working state when the bone conduction vibrator works alone, and the second working state is the working state when the air conduction vibrator works alone.

9. The headphones according to claim 8, wherein, The earphone is equipped with a sensor that detects at least one environmental parameter, and the control signal is derived from the change in the value of the environmental parameter satisfying a second preset condition.

10. The headphones according to claim 9, wherein, The environmental parameters include the weight of liquid at a specific location on the earphone, and the second preset condition is that the weight of liquid is less than a third threshold.

11. The headphones according to claim 9, wherein, The environmental parameters include the volume of environmental noise, and the second preset condition is that the volume of the environmental noise is less than a fourth threshold.

12. The headphones according to claim 2 or 3, wherein, The first working state is the working state when the bone guide vibrator and the air guide vibrator work simultaneously, and the second working state is the working state when the bone guide vibrator or the air guide vibrator works alone.

13. The headphones according to claim 2 or 3, wherein, The first working state is the working state when the bone-guided vibrator or the air-guided vibrator works alone, and the second working state is the working state when the bone-guided vibrator and the air-guided vibrator work simultaneously.

14. The headphones according to claim 1, wherein, The bone-conducting vibrator includes a first magnetic circuit, a vibrating plate, and a first coil. The air-conducting vibrator includes a diaphragm, a second magnetic circuit, and a second coil. The angle between the first vibration direction of the vibrating plate in the first magnetic circuit and the second vibration direction of the diaphragm in the second magnetic circuit is in the range of 45°-135°.

15. The headphones according to claim 1, wherein, The bone conduction vibrator and the air conduction vibrator are located in the same housing. The vibration of the bone conduction vibrator is transmitted to the face side of the housing. The air conduction vibrator emits sound through two sound guide holes on the front and back sides of the diaphragm, one of which faces the ear canal opening.

16. The headphones according to claim 15, wherein, Waterproof and breathable membranes are respectively installed at the two sound guide holes.

17. The headphones according to claim 15, wherein, The earphones include ear hooks configured to be worn on the front of the tragus.

18. A method of controlling headphones, the headphones comprising an air-conducting vibrator configured to generate air-conducted sound, a bone-conducting vibrator configured to generate bone-conducted sound, and control circuitry, the method comprising: The control circuit receives the control signal; as well as In response to the control signal, the control circuit performs a switch from a first operating state of the earphone to a second operating state of the earphone, wherein the first operating state or the second operating state includes the operating state when the air-conducting vibrator or the bone-conducting vibrator operates alone.

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