RU2807171C1 - Systems, methods and devices for output of acoustic signals - Google Patents

Abstract

FIELD: acoustics.

SUBSTANCE: device for outputting audio signals, comprising: a bone conduction unit configured to generate a bone conduction acoustic wave; an air conduction unit configured to generate an air conduction acoustic wave, wherein the air conduction unit includes one or more vibrating diaphragms physically coupled to at least one of the bone conduction unit or housing, wherein the air conduction acoustic wave is generated based on said one or more vibration diaphragms and vibration of said at least one of the bone conduction unit or housing, the bone conduction acoustic wave and the air conduction acoustic wave represent the same sound signal, and the phase difference between the bone conduction acoustic wave and the air conduction acoustic wave is less threshold value; and a housing configured to receive at least a portion of the bone conduction assembly and an air conduction assembly, wherein at least one of said one or more vibrating diaphragms includes a main portion physically connected to the bone conduction assembly, the main portion includes a base plate and a side wall defining a subspace for receiving at least a portion of the bone conduction node; and an auxiliary portion physically connected to the housing; or at least one of said one or more vibrating diaphragms includes an annular structure, an inner wall of the vibrating diaphragm surrounds a bone conduction unit, and an outer wall of the vibrating diaphragm is physically connected to the housing.

EFFECT: improved audio quality, audio enrichment, improved user experience of audio, and reduced audio leakage.

10 cl, 2 dwg

Description

Field of technology to which the invention relates

The present disclosure relates generally to acoustic signal output technology and, in particular, to an acoustic signal output device using both bone and air conduction to provide audio signals.

State of the art

Currently, wearable devices with acoustic signal output are appearing and becoming increasingly popular. In particular, an open device that outputs binaural acoustic signals (eg, bone conduction speaker) is increasingly being used to facilitate the transmission of sound to the user due to its health and safety-related characteristics. However, the bone conduction speaker has poor performance in the mid-low frequency range and obvious sound leakage. Thus, it is necessary to provide an acoustic signal output device that outputs sounds with improved quality, enriches sounds, improves the user's audio experience, and also reduces sound leakage.

Disclosure of the invention

In one aspect of the present disclosure, a device for outputting audio signals is provided. In some embodiments, the device may include a bone conduction assembly configured to generate a bone conduction acoustic wave. The device may include an air conduction assembly configured to generate an air conduction acoustic wave, wherein the bone conduction acoustic wave and the air conduction acoustic wave may represent the same audio signal. The device may include a phase difference between the bone conduction acoustic wave and the air conduction acoustic wave, which may be less than a threshold value. The device may include a housing configured to receive at least a portion of a bone conduction unit and an air conduction unit. In some embodiments, the bone conduction assembly may include a magnetic circuit assembly configured to generate a magnetic field. The bone conduction unit may include one or more vibration plates coupled to the housing. The bone conduction assembly may include a voice coil coupled to at least one of said one or more vibration plates, the voice coil vibrating in a magnetic field in response to receiving an audio signal and causing said one or more vibration plates to vibrate to produce acoustic bone waves. conductivity.

In some embodiments, the air conduction acoustic wave may be generated based on vibration of at least one bone conduction unit or housing when the bone conduction unit generates the bone conduction acoustic wave.

In some embodiments, the air conduction assembly may include one or more vibrating diaphragms physically coupled to at least one of the bone conduction assembly or housing, wherein an air conduction acoustic wave may be generated based on said one or more vibrating diaphragms and the vibration of said at least one of the bone conduction node or housing.

In some embodiments, the housing may include a space in which at least one of the one or more vibrating diaphragms is located, the space may include a first cavity and a second cavity defined by at least one of the one or more vibrating diaphragms , the first housing portion around the first cavity may be physically connected to the bone conduction unit and configured to transmit vibration of the bone conduction unit, and the air conduction acoustic wave may be output from the second cavity.

In some embodiments, a second housing portion around the second cavity may be configured with one or more first openings in communication with the second cavity, and an air conduction wave may be discharged from the first openings through the one or more first openings.

In some embodiments, a sound tube may be provided at each of the one or more first openings.

In some embodiments, the first housing portion may be configured with one or more second openings in communication with the first cavity, and the one or more second openings may be configured to adjust the air pressure in the first cavity.

In some embodiments, said one or more first openings may be provided on a first side wall of the housing, said one or more second openings may be provided on a second side wall of the housing, and the first side wall may be substantially parallel to the second side wall.

In some embodiments, the housing may be configured with one or more third openings in communication with at least one of the first cavity or the second cavity.

In some embodiments, at least one of said one or more second openings or said one or more third openings may be covered with soundproofing material.

In some embodiments, at least one of the one or more third openings may be provided on the second side wall of the housing.

In some embodiments, at least one of the one or more third holes may be provided with a damping structure.

In some embodiments, at least one of the one or more vibrating diaphragms may include a main portion physically coupled to a bone conduction node, the main portion may include a base plate and a side wall defining a subspace to receive at least a portion of the node bone conduction; and the auxiliary portion may be physically connected to the housing.

In some embodiments, the auxiliary portion may include at least one of a concave or convex region.

In some embodiments, at least one of the one or more vibrating diaphragms may include an annular structure, an inner wall of the vibrating diaphragm may surround a bone conduction unit, and an outer wall of the vibrating diaphragm may be physically coupled to the housing.

In some embodiments, at least one of the one or more vibrating diaphragms may be located between the lower surface of the bone conduction unit and the lower surface of the housing.

In some embodiments, the one or more vibration diaphragms may include a first vibration diaphragm physically coupled to the bone conduction assembly and a second vibration diaphragm physically coupled to the housing.

In some embodiments, the bottom surface of the housing, which may be against a side wall of the housing in contact with the user when the user is wearing the device, has a resonant frequency less than a threshold value.

In some embodiments, the air conduction assembly may include a vibration diaphragm and a vibration transmission assembly, the vibration transmission assembly may be physically coupled to the bone conduction assembly and the vibration diaphragm, and the vibration transmission assembly may be configured to transmit vibration of the bone conduction assembly to the vibration diaphragm to generate an air-conducted acoustic wave.

In some embodiments, the device may further include a resonator hole, an air conduction wave may be output from the resonator hole, and a vibration diaphragm may be disposed in the resonator hole.

Additional features will be set forth in part in the description that follows, and in part will become apparent to those skilled in the art upon examination of the following description and accompanying drawings, or may be learned by manufacture or operation of the examples. The features of the present disclosure may be realized and demonstrated by practice or by using various aspects of the methodologies, tools, and combinations thereof set forth in the detailed examples discussed below.

Brief description of drawings

The present disclosure is further illustrated using exemplary embodiments. These exemplary embodiments are described in detail with reference to the drawings. These embodiments are not limiting. In these embodiments, the same reference position represents the same structure, in which:

fig. 1 is a diagram illustrating an exemplary acoustic signal output system according to some embodiments of the present disclosure;

fig. 2A and 2B are schematic diagrams of an exemplary device for outputting acoustic signals according to some embodiments of the present disclosure;

fig. 3A is a schematic diagram of an exemplary device for outputting acoustic signals according to some embodiments of the present disclosure;

fig. 3B is a schematic diagram of another exemplary device for outputting acoustic signals according to some embodiments of the present disclosure;

fig. 4 is a schematic representation of a resonant system according to some embodiments of the present disclosure;

fig. 5 is a diagram illustrating an apparatus for outputting acoustic signals according to some embodiments of the present disclosure;

fig. 6 is a diagram illustrating an apparatus for outputting acoustic signals according to some embodiments of the present disclosure;

fig. 7 is a schematic diagram illustrating an apparatus for outputting acoustic signals according to some embodiments of the present disclosure;

fig. 8 is a diagram illustrating an apparatus for outputting acoustic signals according to some embodiments of the present disclosure;

fig. 9 is a schematic diagram illustrating an apparatus for outputting acoustic signals according to some embodiments of the present disclosure;

fig. 10 is a schematic diagram illustrating an apparatus for outputting acoustic signals according to some embodiments of the present disclosure;

fig. 11 is a diagram illustrating an apparatus for outputting acoustic signals according to some embodiments of the present disclosure;

fig. 12 is a schematic diagram illustrating an apparatus for outputting acoustic signals according to some embodiments of the present disclosure;

fig. 13 is a schematic diagram illustrating an apparatus for outputting acoustic signals according to some embodiments of the present disclosure;

fig. 14 and fig. 15 is a cross-sectional view of vibrating diaphragms according to some embodiments of the present disclosure;

fig. 16 is a schematic diagram of various positions with respect to an acoustic signal output device according to some embodiments of the present disclosure;

fig. 17-21 are schematic representations of leakage frequency response curves at various positions relative to various acoustic signal output devices shown in FIG. 16, according to some embodiments of the present disclosure; And

fig. 22-25 are schematic diagrams showing a comparison of the leakage frequency response curves of various acoustic signal output devices at each position shown in FIG. 16, according to some embodiments of the present disclosure.

Carrying out the invention

The following description is provided to enable any person skilled in the art to make and use the present disclosure, and is provided in the context of the specific application and its requirements. Various modifications to the disclosed embodiments will be apparent to those skilled in the art, and the general principles defined herein may be applied to other embodiments and applications without departing from the spirit and scope of the present disclosure. Thus, the present disclosure is not limited to the embodiments shown, but is intended to be within the broadest scope of the claims.

The terminology used herein is for purposes of describing specific exemplary embodiments only and is not intended to be limiting. As used herein, singular forms may also refer to plural forms unless the context clearly indicates otherwise. In addition, it should be understood that the terms “comprises,” “comprising,” “includes,” and/or “including,” when used in this disclosure, indicate the presence of the claimed features, integers, operations, elements, and/or components, but do not exclude the presence or addition of one or more other characteristics, integers, operations, elements, components and/or groups thereof.

It should be understood that as used herein, the terms "system", "machine", "unit", "module" and/or "assembly" are one way of distinguishing various components, elements, parts, sections or assemblies of different levels in order increasing. However, terms may be replaced by another expression if they serve the same purpose.

In general, as used herein, the terms “module,” “block,” or “device” refer to logic embodied in hardware or firmware, or a set of software instructions. The module, block, or device described herein may be implemented in software and/or hardware and may be stored on any type of non-volatile computer-readable storage medium or other storage device. In some embodiments, a software module/block/device may be compiled and associated with an executable program. It is understood that software modules may be called from other modules/blocks/devices or independently and/or may be called in response to detected events or interrupts. Program modules/blocks/devices configured to be executed on processing devices may be provided on a machine-readable storage medium such as a compact disc, digital video disc, flash drive, magnetic disk or any other tangible storage medium, or as a digital download (and may be natively stored in a compressed or installable format that requires installation, decompression, or decryption before execution). Such program code may be partially or completely stored on the processing execution device device for execution by the processing device. Software instructions may be embedded in firmware such as an EPROM. Additionally, it should be noted that hardware modules/units/devices may be included in connected logic components such as logic gates and flip-flops, and/or may be included in programmable units such as programmable gate arrays or processors. The modules/blocks/devices or processing device functionality described herein may be implemented as software modules/blocks/devices, but may be in the form of hardware or firmware. In general, the modules/blocks/devices described in this document refer to logical modules/blocks/devices that can be combined with other modules/blocks/devices or divided into submodules/subblocks/subdevices, regardless of their physical organization or storage . The description may apply to a system, mechanism or parts thereof.

It should be noted that when a block, mechanism, module or device is referred to as being "connected to", "connected to" or "associated with" another block, mechanism, module or device, it may be directly connected to or connected to the other block, mechanism , module or block, or an intermediate block, mechanism, module or device may be present unless the context clearly indicates otherwise. As used herein, the term “and/or” includes any and all combinations of one or more associated listed elements.

In order to illustrate technical solutions related to embodiments of the present disclosure, the following is a brief description of the drawings referenced in the description of the embodiments. It will be appreciated that the drawings described below are only some examples or embodiments of the present disclosure. Those of ordinary skill in the art can, without further creative effort, apply the present disclosure to other similar scenarios in accordance with these drawings. Unless otherwise indicated or apparent from the context, like reference numerals throughout the drawings refer to the same structure and operation.

Technical solutions of embodiments of the present disclosure will be described with reference to the drawings, as described below. It will be appreciated that the described embodiments are not exhaustive or limiting. Other embodiments derived from the embodiments set forth in this disclosure by those of ordinary skill in the art without any creative effort are within the scope of this disclosure.

An aspect of the present disclosure relates to a device for outputting acoustic signals. The acoustic output device may include a bone conduction unit, an air conduction unit, and a housing configured to receive the bone conduction unit and the air conduction unit. The air conduction unit may generate air conduction acoustic waves based on vibration of the body and/or the bone conduction unit when the bone conduction unit generates the bone conduction acoustic waves. Different spatial arrangements and/or frequency distributions of the bone conduction unit and the air conduction unit may be provided to improve sound quality, enrich sounds at low frequencies, and reduce sound leakage from the acoustic signal output device, thereby improving the audio experience of the user of the acoustic signal output device. output of acoustic signals.

In fig. 1 is a schematic diagram illustrating an exemplary acoustic signal output system according to some embodiments of the present disclosure. The acoustic output system 100 may include a multimedia platform 110, a network 120, an acoustic output device 130, a terminal device 140, and a storage device 150.

The multimedia platform 110 may interface with one or more components of the acoustic signal output system 100 or an external data source (eg, a cloud data center). In some embodiments, media platform 110 may provide data or signals (e.g., audio data of a piece of music) to acoustic output device 130 and/or user terminal 140. In some embodiments, media platform 110 may facilitate data/signal processing for audio output device 130. audio output and/or user terminal 140. In some embodiments, the multimedia platform 110 may be implemented on a single server or group of servers. The server group may be a centralized group of servers connected to the network 120 through an access point, or a distributed group of servers connected to the network 120 through one or more access points, respectively. In some embodiments, media platform 110 may be locally connected to network 120 or remotely connected to network 120. For example, media platform 110 may access information and/or data stored in acoustic output device 130, user terminal 140, and/or or storage device 150, via network 120. As another example, storage device 150 may serve as internal data storage for media platform 110. In some embodiments, media platform 110 may be implemented on a cloud platform. By way of example only, a cloud platform may include a private cloud, a public cloud, a hybrid cloud, a community cloud, a distributed cloud, an inter-cloud cloud, a multi-cloud cloud, or the like, or a combination thereof.

In some embodiments, the multimedia platform 110 may include a processing device 112. Processing device 112 may perform basic functions of multimedia platform 110. For example, processing device 112 may retrieve audio data from storage device 150 and transmit the retrieved audio data to acoustic signal output device 130 and/or user terminal 140 to generate sounds. As another example, processing device 112 may process signals (eg, produce a control signal) for acoustic signal output device 130.

In some embodiments, processing device 112 may include one or more processing units (eg, single-core processing device(s) or multi-core processing device(s). In some embodiments, processing device 112 may include one or more processing engines (eg, single-core processing engine(s) or multi-core processor(s)). By way of example only, processing device 122 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 processor digital signal (DSP), field programmable gate array (FPGA), programmable logic device (PLD), controller, microcontroller unit, reduced instruction set computer (RISC), microprocessor, or the like, or a combination thereof.

Network 120 may facilitate the exchange of information and/or data. In some embodiments, one or more components in the acoustic output system 100 (e.g., media platform 110, acoustic output device 130, user terminal 140, storage device 150) may send information and/or data to other component(s) in system 100 for outputting acoustic signals via network 120. In some embodiments, network 120 may be any type of wired or wireless network, or a combination thereof. By way of example only, network 120 may include a cable network, wired network, fiber optic network, telecommunications network, intranet, Internet, local area network (LAN), wide area network (WAN), wireless local area network (WLAN), metropolitan area network (MAN), public switched telephone network (PSTN), Bluetooth network, ZigBee network, near field communication (NFC) network, or the like, or a combination thereof. In some embodiments, network 120 may include one or more network access points. For example, network 120 may include wired or wireless network access points, such as base stations and/or Internet exchange points, through which one or more components of audio generation system 100 may connect to network 120 to exchange data and/or information.

The acoustic signal output device 130 may output acoustic sounds to a user and interact with the user. In one aspect, the acoustic signal output device 130 may provide the user with at least audio content such as songs, poems, news reports, weather forecasts, audio lessons, etc. In another aspect, the user may provide feedback to the device 130 to output acoustic signals through, for example, keys, screen touches, body movements, voice, gestures, thoughts, etc. In some embodiments, the acoustic signal output device 130 may be a wearable device. Unless otherwise noted, a wearable device used herein may include headphones and various other types of personal devices, such as head-worn, shoulder-worn, or body-worn devices. The wearable device may present at least audio content to the user with or without contact with the user. In some embodiments, the wearable device may include a smart headset, smart glasses, a head-mounted display (HMD), a smart bracelet, a smart shoe, a smart helmet, a smart watch, a smart clothing, a smart backpack, a smart accessory, virtual reality headset, virtual reality glasses, virtual reality overlay, augmented reality headset, augmented reality glasses, augmented reality overlay, or the like, or a combination thereof. By way of example only, a wearable device may be similar to Google GlassTM, Oculus RiftTM, HololensTM, Gear VRTM, etc.

Acoustic output device 130 may communicate with user terminal 140 via network 120. In some embodiments, various types of data and/or information, including, for example, motion parameters (e.g., geographic location, direction of motion, speed of motion, acceleration, etc.) etc.), voice parameters (voice volume, voice content, etc.), gestures (e.g., handshake, head shake, etc.), user thoughts, etc., can be received by the device 130 to output acoustic signals. In some embodiments, the acoustic signal output device 130 may further transmit received data and/or information to the multimedia platform 110 or user terminal 140.

In some embodiments, the user terminal 140 may be customized for the user, such as with an application installed therein, to communicate and/or implement data/signal processing for the acoustic signal output device 130. The user terminal 140 may include a mobile device 130-1, a tablet computer 130-2, a laptop computer 130-3, an in-vehicle device 130-4, or the like, or any combination thereof. In some embodiments, the mobile device 130-1 may include a smart home device, a smart mobile device, a virtual reality device, an augmented reality device, or the like, or a combination thereof. In some embodiments, a smart home device may include a smart lighting device, a smart electrical device control device, a smart monitoring device, a smart TV, a smart video camera, an intercom, or the like, or a combination thereof. In some embodiments, a smart mobile device may include a smartphone, a personal digital assistant (PDA), a gaming device, a navigation device, a point of sale (POS) device, or the like, or a combination thereof. In some embodiments, the embedded device in the vehicle 130-4 may include an embedded computer, an on-board integrated television, an integrated 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 in the figure) to determine the location of the user and/or user terminal 140. In some embodiments, the multimedia platform 110 or the storage device 150 may be integrated into the user terminal 140. In such a case, functions that may be implemented by the multimedia platform 110 described above may be similarly implemented by the user terminal 140.

Memory device 150 may store data and/or instructions. In some embodiments, storage device 150 may store data received from media platform 110, audio output device 130, and/or user terminal 140. In some embodiments, storage device 150 may store data and/or instructions based on which media platform 110, the acoustic signal output device 130 and/or the user terminal 140 may perform various functions. In some embodiments, storage device 150 may include mass storage device, removable storage device, volatile read-write memory, read-only memory (ROM), or the like, or a combination thereof. An exemplary mass storage device may include a magnetic disk, an optical disk, a solid state drive, etc. An exemplary removable storage device may include a flash drive, floppy disk, optical disk, memory card, zip disk, magnetic tape, etc. Exemplary volatile read/write memory may include random access memory (RAM). Exemplary RAM may include dynamic RAM (DRAM), double data rate synchronous dynamic RAM (DDR SDRAM), static RAM (SRAM), thyristor RAM (T-RAM), and capacitorless RAM (Z-RAM), etc. . An exemplary ROM may include a masked ROM (MROM), a programmable ROM (ROM), an erasable programmable ROM (EPROM), an electrically erasable programmable ROM (EEPROM), a compact disc ROM (CD-ROM), and a digital versatile disk ROM. etc. In some embodiments, storage device 150 may be implemented on a cloud platform. By way of example only, a cloud platform may include a private cloud, a public cloud, a hybrid cloud, a community cloud, a distributed cloud, an inter-cloud cloud, a multi-cloud cloud, or the like, or a combination thereof. In some embodiments, one or more components in the acoustic signal output system 100 may access data or instructions stored in the storage device 150 through a network 120. In some embodiments, the storage device 150 may be directly connected to the media platform 110 as an internal storages.

In some embodiments, media platform 110, terminal device 140, and/or storage device 150 may be integrated into acoustic output device 130. In particular, as technology advances and the processing capabilities of the acoustic signal output device 130 increase, all processing may be performed by the acoustic signal output device 130. For example, the acoustic signal output device 130 may be a smart headset, an MP3 player, a hearing aid, etc. with highly integrated electronic components such as Central Processing Units (CPUs), Graphics Processing Units (GPUs), etc., thus having powerful computing capabilities.

In fig. 2A and 2B are schematic diagrams of an exemplary device for outputting acoustic signals according to some embodiments of the present disclosure. In fig. 2A is an angled view of the acoustic signal output device 130. In fig. 2B is an exploded view of an acoustic output device 130. The device 130 for outputting acoustic signals can be described with reference to FIG. 2A and 2B.

In some embodiments, the acoustic output device 130 may include earhooks 10, headphone core housings 20, circuit housing 30, back hooks 40, headphone cores 50, control circuit 60, and battery 70. Headphone core housings 20, and circuit housing 30 can be installed on both ends of the earhooks 10, respectively, and the back hooks 40 can be further installed on the end of the circuit body 30 away from the earhooks 10. The earphone core bodies 20 can be used to accommodate different earphone cores 50. The circuit housing 30 may be used to house the control circuit 60 and the battery 70. The two ends of the rear hooks 40 may be physically connected to the corresponding circuit housing 30, respectively. The earhooks 10 may refer to structures for suspending the acoustic signal output device 130 onto the user's ears when the user wears the acoustic signal output device 130 and securing the earphone core bodies 20 and the earphone cores 50 at predetermined positions relative to the user's ears.

In some embodiments, the ear hooks 10 may include an elastic metal wire. The elastic metal wire can be configured to hold the earhooks 10 in a shape that matches the user's ears with a certain elasticity, so that according to the shape of the ear and the shape of the user's head, a certain elastic deformation can occur when the user wears the acoustic signal output device 130, such adapting to users with different ear shapes and head shapes. In some embodiments, the elastic metal wire may be made from a shape memory alloy with good deformation recovery ability. Even if the earhooks 10 are deformed due to external force, they can recover their original shape when the external force is removed, thereby extending the service life of the acoustic signal output device 130. In some embodiments, the elastic wire may also be made of a shape memory alloy. A lead may be provided in the resilient metal wire to establish an electrical connection between the headphone cores 50 and other components such as the control circuit 60, battery 70, etc. to facilitate power supply and data transmission to the headphone cores 50. In some embodiments, the ear hooks 10 may further include a protective sleeve 16 and a body guard 17 integral with the protective sleeve 16.

In some embodiments, the headphone core housings 20 may be configured to receive the headphone cores 50. The earphone cores 50 may include a bone conduction unit, an air conduction unit, etc. The bone conduction assembly may be configured to output acoustic waves propagating through a solid medium (eg, bone) (also referred to as bone conduction acoustic waves). For example, a bone conduction unit may convert an electrical signal into vibrations of the user's cranial bone through direct contact with the user. The air conduction assembly may be configured to output acoustic waves traveling through air (also called air conduction acoustic waves). For example, the air conduction unit may convert the vibration of the headphone core bodies 20, the bone conduction unit, and/or the air vibration in the headphone core bodies 20 into air vibrations perceived by the user's ear. The number of both the earphone cores 50 and the earphone core bodies 20 may be two, which may correspond to the user's left and right ears, respectively. Details regarding the headphone cores 50 can be found elsewhere in the present disclosure, for example, in the description with reference to FIGS. 3-13.

In some embodiments, the earhooks 10 and headphone core bodies 20 may be molded separately and subsequently assembled instead of being directly molded together.

In some embodiments, the headphone core housings 20 may be provided with a contact surface 21. The contact surface 21 may be in contact with the user's skin. The contact surface 21 used herein may also be referred to as the top surface of the headphone core bodies 20. The surface of the headphone core bodies 20, which is opposite to the top surface of the headphone core bodies 20, may also be referred to as a back surface or rear surface of the headphone core bodies 20. Bone conduction acoustic waves generated by one or more bone conduction units of the headphone cores 50 may be transferred outside of the headphone core bodies 20 (eg, to the user's eardrum) through the contact surface during operation of the acoustic signal output device 130. In some embodiments, the material and thickness of the contact surface 21 may affect the transmission of bone conduction acoustic waves to the user, thereby affecting sound quality. For example, if the material of the contact surface 21 is relatively soft, transmission of bone conduction acoustic waves in the low frequency range may be better than transmission of bone conduction acoustic waves in the high frequency range. On the contrary, if the material of the contact surface 21 is relatively hard, the transmission of bone conduction acoustic waves in the high frequency range may be better than the transmission of bone conduction acoustic waves in the low frequency range.

In fig. 3A is a schematic diagram of an example device for outputting acoustic signals according to some embodiments of the present disclosure. As shown in FIG. 3A, the device 300 for outputting acoustic signals may include a signal processing module 310 and an output module 320. The signal processing unit 310 can receive electrical signals from a signal source and process the electrical signals. The electrical signals may represent audio content (eg, music) to be output by the acoustic signal output device. In some embodiments, the electrical signals may be analog signals or digital signals. For example, the electrical signals may be digital signals obtained from the multimedia platform 110, terminal device 140, storage device 150, etc.

The signal processing module 310 can process electrical signals. For example, signal processing module 310 may process electrical signals by performing various signal processing operations such as sampling, digitization, compression, frequency division, frequency modulation, encoding, or the like, or combinations thereof. The signal processing module 310 may further generate control signals based on the processed electrical signals. The control signals may be configured to control the output module 320 to output acoustic waves (ie, audio content).

Output module 320 may generate and output bone conduction acoustic waves (also called bone conduction sounds) and/or air conduction acoustic waves (also called air conduction sounds). The output module 320 may receive control signals from the signal processing module 310 and produce bone conduction acoustic waves and/or air conduction acoustic waves based on the control signals. As used herein, the term “bone conduction acoustic waves” refers to acoustic waves propagating as mechanical vibrations through a solid medium (eg, bone). Air conduction acoustic waves refer to acoustic waves that propagate as mechanical vibrations in the air.

For illustrative purposes, output module 320 may include a bone conduction assembly 321 and an air conduction assembly 322. The bone conduction unit 321 and/or the air conduction unit 322 may be electrically coupled to the signal processing module 310. The bone conduction unit 321 can generate bone conduction acoustic waves in a certain frequency range (for example, low frequency range, mid frequency range, high frequency range, mid low frequency range, mid high frequency range, etc.) in accordance with control signals generated signal processing module 310. The air conduction unit 322 may produce air conduction acoustic waves in the same or a different frequency range as the bone conduction unit 321 in accordance with the vibration of the bone conduction unit 321, the vibration of the housing in which the bone conduction unit 321 and the air conduction unit 322 are housed, vibration of air in the housing and/or control signals.

In some embodiments, bone conduction assembly 321 and air conduction assembly 322 may be two independent functional devices or two independent components of a single device. As used herein, the term “independence of the first device from the second device” means that the operation of the first/second device is not caused by the operation of the second/first device, or in other words, the operation of the first/second device is not a result of the operation of the second/first device. Taking the bone conduction node and the air conduction node as an example, the air conduction node depends on the bone conduction node because the air conduction node is driven to produce air conduction acoustic waves by vibrating the bone conduction node, when the bone conduction node produces bone conduction acoustic waves conductivity. As a further example, when bone conduction node 321 receives control signals from signal processing module 310, bone conduction node 321 may vibrate to produce acoustic bone conduction waves. The vibration of the bone conduction unit 321 may cause the body to vibrate, and the vibration of the body may cause the air conduction unit 322 to vibrate, generating air conduction acoustic waves.

Different frequency ranges can be specified according to actual needs. For example, the low frequency range (also called bass) can refer to the frequency range from 20 Hz to 150 Hz, the mid frequency range (also called midrange) can refer to the frequency range from 150 Hz to 5 kHz, the high frequency range (also called high frequencies) can refer to the frequency range from 5 kHz to 20 kHz, the mid-low frequency range (also called mid-bass) can refer to the frequency range from 150 Hz to 500 Hz, and the mid-high frequency range (also called mid-high frequencies) may refer to the frequency range from 500 Hz to 5 kHz. As another example, the low frequency range may refer to the frequency range from 20 Hz to 300 Hz, the mid range may refer to the frequency range from 300 Hz to 3 kHz, the high frequency range may refer to the frequency range from 3 kHz to 20 kHz, the mid-low frequency range may refer to the frequency range from 100 Hz to 1000 Hz, and the mid-high frequency range may refer to the frequency range from 1000 Hz to 10 kHz. It should be noted that frequency range values are for illustrative purposes only and are not intended to be limiting. The definitions of the above frequency ranges may vary depending on different application scenarios and different classification standards. For example, in some other application scenarios, the low frequency range may refer to the frequency range from 20 Hz to 80 Hz, the mid frequency range may refer to the frequency range from 160 Hz to 1280 Hz, the high frequency range may refer to the frequency range from 2560 Hz to 20 kHz, the mid-low frequency range may refer to the frequency range from 80 Hz to 160 Hz, and the mid-high frequency range may refer to the frequency range from 1280 Hz to 2560 Hz. Different frequency ranges may or may not have overlapping frequencies if necessary.

The air conduction unit 322 may generate and output air conduction acoustic waves in the same or a different frequency range as the air conduction acoustic waves generated by the bone conduction unit 321.

For example, bone conduction acoustic waves may include mid-high frequencies, and air conduction acoustic waves may include mid-low frequencies. Air conduction acoustic waves of medium and low frequencies can be used as a complement to bone conduction acoustic waves of medium and high frequencies. The overall output signal of the acoustic signal output device may cover mid-low frequencies and mid-high frequencies. In this case, you can achieve better sound quality (especially at low frequencies) and avoid intense vibration of the bone conduction speaker at low frequencies.

As another example, bone conduction acoustic waves may include low-mid frequencies, and air conduction acoustic waves may include high-mid frequencies. In this case, the acoustic signal output device may provide prompts or warnings to the user through the bone conduction speaker and/or the air conduction speaker since the user is sensitive to low-frequency bone conduction acoustic waves and/or mid-high frequency bone conduction acoustic waves.

As a further example, air conduction acoustic waves may include low-mid frequencies, and bone conduction acoustic waves may include frequencies in a wider frequency range (broadband) than air conduction acoustic waves. In this way, the output of mid-low frequencies can be improved and the sound quality can be improved.

In fig. 3B is a schematic diagram of another exemplary device for outputting acoustic signals according to some embodiments of the present disclosure. In some embodiments, the acoustic signal output device 350 shown in FIG. 3B may be similar or the same as the acoustic signal output device 300 shown in FIG. 3A, except that the acoustic signal output device 350 may further include bone conduction signal processing circuits 316, air conduction signal processing circuits 317, and signal combining circuits 318. The bone conduction signal processing circuits 316 may be configured to process the bone conduction signals. The air conduction signal processing circuits 317 may be configured to process the air conduction signals. In some embodiments, the electrical signals may include bone conduction signals and air conduction signals. As used herein, the term “bone conduction signals” refers to electrical signals related to bone conduction acoustic waves and/or electrical signals influencing the production and output of bone conduction acoustic waves. Air conduction signals refer to electrical signals that relate to air conduction acoustic waves and/or electrical signals that affect the production and output of air conduction acoustic waves. In some embodiments, bone conduction signal processing circuitry 316 may receive bone conduction signals from a signal source, process the bone conduction signals, and generate a corresponding bone conduction control signal. A bone conduction control signal refers to a signal that controls the production and output of bone conduction acoustic waves. Likewise, air conduction signal processing circuit 317 may receive air conduction signals from a signal source (eg, an air conduction microphone), process the air conduction signals, and generate a corresponding air conduction control signal. An air conduction control signal refers to a signal that controls the production and output of air conduction acoustic waves.

In some embodiments, the acoustic signal output device 350 may further include a signal combining circuit 318 configured to combine bone conduction control signals and air conduction signals or combine the processed air conduction signals and the processed bone conduction signals to produce single control signals. For example, bone conduction signal processing circuitry 316 may detect low frequency components in the bone conduction signals to produce processed bone conduction signals. The air conduction signal processing circuit 317 may detect high frequency components in the air conduction signals to obtain processed air conduction signals. The signal combining circuit 318 may combine low frequency components and high frequency components to produce unified control signals. When the bone conduction node 321 receives control signals from the signal processing module 315, the bone conduction node 326 may vibrate to produce acoustic bone conduction waves. Vibration of the bone conduction node 326 may cause vibration of the air conduction node 327 to generate air conduction acoustic waves.

The output module 325 may include a bone conduction assembly 326 and an air conduction assembly 327 . The bone conduction unit 326 and the air conduction unit 327 may be the same or similar to the bone conduction unit 321 and the air conduction unit 322 of the output module 320 shown in FIG. 3A, respectively, which are not described again here.

In some embodiments, bone conduction node 326 may be electrically coupled to bone conduction signal processing circuitry 316, and bone conduction node 326 may generate and output bone conduction acoustic waves over a specific frequency range in accordance with bone conduction control signals generated by signal processing circuits 316. bone conduction. The air conduction unit 327 may be electrically coupled to the air conduction signal processing circuit 317, and the bone conduction unit 327 may generate and output air conduction acoustic waves in the same or different frequency ranges as the bone conduction unit 326 in accordance with the air conduction control signals. , generated by air conduction signal processing circuits 317.

With reference to FIG. 3A and FIG. 3B, to adjust the output characteristics (e.g., frequency, phase, amplitude, etc.) of bone conduction acoustic waves and/or air conduction acoustic waves, bone conduction control signals and/or air conduction control signals may be further processed in module 310 or 315 signal processing such that bone conduction acoustic waves and/or air conduction acoustic waves may have different output characteristics. For example, the bone conduction control signals and/or the air conduction control signals may include certain frequencies. In some alternative embodiments, the design of each of the at least one component and/or the arrangement of the at least one component in the output module 320 or 325 may be modified or optimized so that the output characteristics (e.g., frequencies) of the acoustic bone waves can be adjusted. conduction and/or air conduction acoustic waves.

In some embodiments, one or more filters or sets of filters may be provided to process the bone conduction control signals and/or air conduction control signals in the signal processing module 310 or 315 to adjust the output characteristics (e.g., frequencies) of the bone conduction acoustic waves and/or air-conducted acoustic waves. Examples of filters or filter sets may include, but are not limited to, analog filters, digital filters, passive filters, active filters, or the like or combinations thereof.

In some embodiments, a time domain processing method may be provided to enrich the acoustic effect of sounds output by output module 320 or 325. Examples of time domain processing techniques may include dynamic range control (DRC), time delay, reverb, etc.

In some embodiments, the acoustic signal output device 300 or 350 may also include an active leak suppression module. In some embodiments, the active leakage suppression module may output acoustic waves directly without feedback from a reference signal source (e.g., a microphone) to superimpose and suppress leakage acoustic waves (i.e., audio leakage) of the acoustic signal output device 300 or 350. The acoustic waves exiting the active leak suppression module may have the same amplitudes, the same frequencies, and opposite phases to the leaking acoustic waves. In some alternative embodiments, the active leakage suppression module may output acoustic waves in accordance with feedback from a reference signal source. For example, a microphone may be placed in the sound field of device 300 or 350 to output acoustic signals to obtain sound field information (e.g., position, frequency, phase, amplitude, etc.) and provide real-time feedback to the module active leakage suppression to dynamically adjust the output acoustic waves to reduce or eliminate audio leakage of the acoustic signal output device 300 or 350. In some embodiments, an active leak suppression module may be integrated into output module 320 or 325.

In some embodiments, the acoustic signal output device 300 or 350 may further include a beamforming module. The beam shaping module may be configured to generate a specific sound beam of bone conduction acoustic waves and/or air conduction acoustic waves. In some embodiments, the beamforming module may generate a specific sound beam by controlling the amplitudes and/or phases of bone conduction acoustic waves and/or air conduction acoustic waves propagating from output module 320 (e.g., bone conduction node 321 and air conduction node 322) or output module 325 (eg, bone conduction node 326 and air conduction node 327). For example, a sound beam can be fan-shaped and located at a certain angle. The sound beam can be propagated in a specific direction to achieve the maximum sound pressure level near the human ears. At the same time, the sound pressure level at other locations in the sound field can be relatively low, thereby reducing sound leakage through the acoustic signal output device 300 or 350. In some embodiments, the acoustic signal output device 300 or 350 may create a more ideal 3D sound field using 3D sound field reconstruction technologies or local sound field control technologies so that the user can better experience an immersive sound field experience. In some embodiments, the beamforming module may also be integrated into the output module 320 or 325.

In fig. 4 is a schematic representation of a resonant system according to some embodiments of the present disclosure. In some embodiments, the effect of the designs and/or arrangement of one or more components of the acoustic signal output device 130 on the characteristics of the acoustic sounds output by the acoustic signal output device 130 can be modeled using the resonant system 400. In some embodiments, the resonant system 400 may be described in combination with a damped mass-spring system. In some embodiments, the resonant system 400 may be described in combination with a plurality of damped mass-spring systems connected in parallel or in series. The motion of the resonant system 400 can be expressed by equation (1):

, (1)

where M denotes the mass of the resonant system 400, R denotes the damping of the resonant system 400, K denotes the spring constant of the resonant system 400, F denotes the driving force, and denotes the offset of the resonant system 400.

In some embodiments, the resonant frequency of the resonant system 400 can be obtained by solving equation (1). The resonant frequency of the resonant system 400 can be obtained according to equation (2):

, (2)

Where denotes the resonant frequency of the resonant system 400.

In some embodiments, the frequency band may be determined according to a half power point. The quality factor Q of the resonant system 400 can be determined according to equation (3):

. (3)

In cases of multiple resonant systems, the vibration characteristics (eg, amplitude-frequency response, phase-frequency response, transient response, etc.) of each of the multiple resonant systems may be the same or different. For example, each of a plurality of resonant systems may be driven by the same driving force or by different driving forces.

In some embodiments, each of bone conduction node 321, air conduction node 322, bone conduction node 326, or air conduction node 327 may be a single resonant system or a combination of multiple resonant systems. In some embodiments, output module 320 or 325 may also include a plurality of bone conduction nodes and/or a plurality of air conduction nodes.

Regarding bone conduction acoustic waves, the frequency and bandwidth of bone conduction acoustic waves can be adjusted by changing the above parameters (eg, mass, damping, etc.). For example, the resonant frequency can be adjusted in the low-medium frequency range by increasing the mass, reducing the elasticity coefficient (for example, using a spring with a lower elasticity coefficient, using a material with a lower Young's modulus as a vibration transmission structure, reducing the thickness of the vibration transmission structure, etc.). In this case, the resonant system 400 (for example, a bone conduction unit) makes it possible to obtain vibration output in the range of medium-low frequencies. As another example, the resonant frequency can be adjusted in the mid-high frequency range by reducing the mass of the resonant system 400, increasing the elasticity coefficient of the resonant system 400 (using a spring with a higher elasticity coefficient, using a material with a higher Young's modulus as the vibration transmission structure, increasing the thickness of the vibration transmission structures, etc., installation of ribs or other load-bearing structures in a vibration-transmitting structure, etc.). In this case, the resonant system 400 allows vibration to be output in the mid-high frequency range. As a further example, the vibration bandwidth at the output of the resonant system 400 is adjusted by changing the quality factor Q. As a further example, a composite resonant system including a plurality of resonant systems may be provided. The resonant frequency and quality factor Q of each resonant system can be adjusted separately. The center frequency and bandwidth of a composite resonant system can be adjusted by connecting multiple resonant systems in series or in parallel.

As for air conduction acoustic waves, the frequency and bandwidth of air conduction acoustic waves can be adjusted in a similar way by changing the above parameters (eg, mass, damping, etc.). In some embodiments, one or more acoustic structures may be provided to adjust the frequencies of the air conduction acoustic waves. The one or more acoustic structures may include, for example, an acoustic cavity, a sound conduction tube (also called a sound tube), a sound hole, a decompression hole, a tuning grid, tuning wool, a passive vibration diaphragm, or the like, or a combination thereof. For example, the spring rate of the system 400 can be adjusted by changing the volume of the acoustic cavity. As the volume of the acoustic cavity increases, the elasticity coefficient of the system may be lower. When the volume of the acoustic cavity decreases, the elasticity coefficient of the system can be greater. In some embodiments, the mass and damping of the system 400 can be adjusted by installing a sound tube or sound hole. The longer the sound tube or sound hole, the smaller the cross-section will be, the greater the mass will be and the less damping will be. Conversely, the shorter the sound tube or sound hole, the larger the cross-section will be, the less mass will be and the greater the damping will be. In some embodiments, the damping of the system 400 can be adjusted by installing sound-absorbing materials (eg, tuning holes, tuning grids, tuning wool, etc.) in the path along which air-conducted acoustic waves travel. In some embodiments, air conduction of acoustic waves in the low frequency range can be enhanced by installing a passive vibration diaphragm. In some embodiments, the phases, amplitudes, and/or frequency ranges of the air-conducted acoustic waves can be adjusted by positioning one or more sound tubes and/or phase-changing apertures. In some other embodiments, a number of air conduction assemblies may be provided. The amplitude, frequency range and phase of each air conduction node can be adjusted to produce a sound field with a specific spatial distribution.

In some embodiments, the user may also adjust the output characteristics of the bone conduction acoustic waves and/or air conduction acoustic waves (eg, by setting the amplitude, frequency, and/or phase of the control signal). In some embodiments, the output characteristics of bone conduction acoustic waves and/or air conduction acoustic waves can also be adjusted using parameters of the resonant system 400 and the control signal set by the user.

In fig. 5 is a diagram illustrating an apparatus for outputting acoustic signals according to some embodiments of the present disclosure. As shown in FIG. 5, the acoustic signal output device 500 may include a bone conduction unit 510, a housing 520, an air conduction unit. The bone conduction unit 510 and the air conduction unit may be housed together in the same housing 520. The bone conduction unit 510 may generate bone conduction acoustic waves that are transmitted to the user through the housing 520, and the air conduction unit may generate vibration-based air conduction acoustic waves. node 510 bone conduction. Air conduction acoustic waves may be transmitted to the user through one or more sound holes on the housing 520.

In some embodiments, the device 500 for outputting acoustic signals may further include a signal processing module similar or the same as the signal processing module 310 or 315. The bone conduction assembly 510 may be electrically coupled to the signal processing module to receive control signals (eg, audio signals) and may produce acoustic bone conduction waves based on the control signals. For example, bone conduction assembly 510 may be or include any element (eg, vibration motor, electromagnetic vibration device, etc.) that converts electrical signals (eg, bone conduction control signals) into mechanical vibration signals. Examples of signal conversion methods may include, but are not limited to, electromagnetic types (eg, moving coil type, moving core type, magnetostrictive type), piezoelectric types, electrostatic types, etc. The internal structures of the bone conduction unit 510 may be a single resonant system or a composite resonant system. In some embodiments, bone conduction assembly 510 may generate mechanical vibrations in response to bone conduction control signals. Mechanical vibrations can produce bone conduction acoustic waves.

As shown in FIG. 5, bone conduction assembly 510 may include a magnetic circuit system 511, one or more vibration plates 512, and a voice coil 513. The magnetic circuit system 511 may include one or more magnetic elements and/or magnetic guide elements that are configured to generate a magnetic field. In some embodiments, the magnetic circuit system 511 may include a magnetic gap. The magnetic circuit system 511 may generate a magnetic field in the magnetic gap. The voice coil 513 may be located in a magnetic gap. At least one of one or more vibration plates 512 may be physically coupled to a housing 520 that may contact the user's skin (e.g., the user's scalp) and transmit bone conduction acoustic waves to the cochlea of the user's inner ear when the user wears the device. output of acoustic signals. In some embodiments, one of the vibration plates 512 may also be referred to as the top wall of the housing 520. As used in the present disclosure, the term "bottom" or "top" of the component is described in relation to the user's skin. For example, in housing 520, the wall closest to the skin (e.g., the wall attached to the skin) of the user is called the top wall or front wall, and the wall furthest from the skin (e.g., the wall opposite the top wall) of the user is called the bottom wall or back wall. Voice coil 513 may be mechanically coupled to at least one of the vibrating plates 512. In some embodiments, voice coil 513 may also be electrically coupled to the signal processing module. When current (representing control signals) is applied to the voice coil 513, the voice coil 513 may vibrate in a magnetic field and cause vibration of one or more vibration plates 512. The vibration of one or more vibration plates 512 may be transmitted to the user's bones through the body 520 to generate acoustic waves in the bone. conductivity. In some embodiments, vibration of one or more vibration plates 512 may cause vibration of the housing 520 and/or magnetic circuit system 511. Vibration of the housing 520 and/or magnetic circuit system 511 may cause the air in the housing 520 to vibrate.

The air conduction assembly may include a vibrating diaphragm 531. The vibrating diaphragm 531 may be physically coupled to the bone conduction assembly 510 and/or housing 520. For example, the vibrating diaphragm 531 may be coupled to a magnetic circuit system 511, a voice coil 513, and/or a at least one of one or more vibration plates 512. When the bone conduction unit 510 (e.g., one or more vibration plates 512) vibrates to produce acoustic bone conduction waves, the vibration of the bone conduction unit 510 (e.g., one or more vibration plates 512) may cause vibration of the housing 520 and/or vibration diaphragm 531, which is physically coupled to the bone conduction assembly 510 and/or housing 520. Vibration of the vibration diaphragm 531 may cause vibration of the air in housing 520. Vibration of air in housing 520 may be transmitted from housing 520 to generate acoustic air conduction waves. The air conduction acoustic waves and the bone conduction acoustic waves may be the same audio signal that is input to the bone conduction unit 510 or the same audio signal that is perceived by the user. As used herein, the terms “air conduction acoustic waves” and “bone conduction acoustic waves” representing the same audio signal refer to the fact that air conduction acoustic waves and bone conduction acoustic waves represent the same voice content, which are indicated by low-frequency components in air conduction acoustic waves and bone conduction acoustic waves. The frequency components of air conduction acoustic waves and bone conduction acoustic waves may be different. For example, bone conduction acoustic waves may include more low frequency components, and air conduction acoustic waves may include more high frequency components. In some embodiments, during vibration, the vibration diaphragm 531 may be physically coupled to the magnetic circuit system 511, the vibration diaphragm 531 and the magnetic circuit system 511 may be considered immobilizing, and the vibration of the housing 520 relative to the housing 520 may cause a change in pressure in the first cavity 523 and the second cavity 524, thereby causing the air in the first cavity 523 and the second cavity 524 to vibrate. In some embodiments, during vibration, the vibration diaphragm 531 may be physically coupled to the magnetic circuit system 511, the housing 520 may be considered to immobilize the vibration diaphragm 531 and the system 511 The magnetic circuit may vibrate relative to the housing 520, and the vibrating diaphragm 531 and the magnetic circuit system 511 may cause a pressure change in the first cavity 523 and the second cavity 524, thereby causing the air in the first cavity 523 and the second cavity 524 to vibrate.

The vibration diaphragm 531 may include a thin film made of vibration-sensitive materials. Examples of materials of the vibrating diaphragm 531 may include polyaryl ether (PAR), thermoplastic elastomer (TPE), polytetrafluoroethylene (PTFE), etc.

In some embodiments, the vibrating diaphragm 531 may include a main portion and a secondary portion. The main portion may be physically coupled to a bottom surface of the magnetic circuit system 511 that is remote from the top wall of the housing 520. In some embodiments, the main portion may include a plate (e.g., a circular plate or an annular plate) that covers at least a portion of the bottom surface of the magnetic circuit system 511. In some embodiments, the main portion may include a base plate (eg, a circular plate or an annular plate) that covers at least a portion of the bottom surface of the magnetic circuit system 511 and a side wall that is connected to the side wall of the magnetic circuit system 511. The auxiliary section may be ring-shaped and surround the main section. The auxiliary portion may be physically coupled to the housing 520. For example, the interior of the auxiliary portion may contact or be coupled to the exterior of the main portion, and the exterior of the auxiliary portion may be physically coupled to the housing 520. In some embodiments, the auxiliary portion may include at least one convex area or groove area. Additional description of the vibrating diaphragm 531 can be found elsewhere in this disclosure (eg, in the description with reference to FIGS. 14 and 15).

Housing 520 may include a space configured to accommodate bone conduction assembly 510 and/or one or more air conduction assembly components. In some embodiments, the vibrating diaphragm 531 may be located in a space and divide the space into a first cavity 523 and a second cavity 524. In some embodiments, the first cavity 523 and the second cavity 524 may not be in fluid communication. In some embodiments, the first cavity 523 and the second cavity 524 may be in fluid communication. For example, the vibrating diaphragm 531 may be provided with one or more through holes.

Housing 520 may include a first section and a second section. The first housing portion 520 and the vibrating diaphragm 531 may define a first cavity. The first portion of the housing 520 around the first cavity may be physically coupled to the bone conduction unit 510 (eg, one or more vibration plates 512) and transmit vibration of the bone conduction unit 510 to the user's bone when the user wears the acoustic output device 500. The second housing portion 520 and the vibrating diaphragm 531 may define a second cavity. Air conduction acoustic waves generated by the air conduction assembly may propagate from the second cavity 524. As used herein, the term "first cavity" may also be referred to as the anterior cavity that is closest to the user's skin, and the term "second cavity" may also be referred to as the back cavity furthest from the skin when the user wears the acoustic signal output device 500.

In some embodiments, at least one sound outlet 521 may be located on a side wall of the second portion of housing 520, and the sound outlet 521 may communicate with the second cavity 524. In some embodiments, at least the sound outlet 521 may include one or more sound holes (also called one or more first holes). Sound holes can be through. By interacting between the magnetic field and the voice coil 513, the magnetic circuit system 511 may also obtain an appropriate reaction force for vibration and cause the vibrating diaphragm 531 to vibrate. The vibration of the vibrating diaphragm 531 may cause the air in the second cavity 524 to vibrate. The vibration of the air in the second cavity 524 may generate acoustic air conduction waves in the second cavity 524, which may propagate from the second cavity 524. In some embodiments, when a user wears the acoustic signal output device 500, the sound outlet 521 may face the external auditory canal of the user's ear.

In some embodiments, when the interaction between the voice coil 513 and the magnetic circuit system 511 (i.e., vibration of the voice coil 513 under the influence of the magnetic field generated by the magnetic circuit system 511) causes the housing 520 to move toward the front side of the acoustic signal output device 500 ( that is, in the direction indicated by arrow A, or towards the user's skin) and the vibration diaphragm 531 (the housing 520 can be considered to move in the direction indicated by arrow A, while the magnetic circuit system 511 and the vibration diaphragm 531 remain stationary) , the first cavity 523 in the housing 520 becomes larger, the second cavity 524 becomes smaller, and the pressure within the second cavity 524 increases. As the body 520 moves toward the user's skin, the pressure of one or more vibration plates 512 acting on the user's skin may increase, and the bone conduction acoustic waves transmitted by the bone conduction unit 510 may be determined to be in a "positive phase." Likewise, due to the increase in pressure within the second cavity 524, the air conduction acoustic wave generated by the air conduction assembly and output from the second cavity 524 may also be in a "positive phase". In some embodiments, the air conduction acoustic wave and the bone conduction acoustic wave may be in the same phase, that is, the phase difference between the air conduction acoustic wave and the bone conduction acoustic wave may be 0. In some embodiments, the phase difference between the acoustic wave air conduction and bone conduction acoustic wave may be less than a threshold value such as π, 2π/3, π/2, etc. As used herein, the term “phase difference between air conduction acoustic wave and bone conduction acoustic wave” may refer to the absolute value of the phase difference between the air conduction acoustic wave and the bone conduction acoustic wave. In some embodiments, the difference frequency ranges of the air conduction acoustic wave and the bone conduction acoustic wave may correspond to different phase differences and different threshold values. For example, the phase difference between an air conduction acoustic wave and a bone conduction acoustic wave in the frequency range less than 300 Hz may be less than π. As another example, the phase difference between an air conduction acoustic wave and a bone conduction acoustic wave in a frequency range less than 1000 Hz (eg, 300 Hz to 1000 Hz) may be less than 2π/3. As another example, the phase difference between an air conduction acoustic wave and a bone conduction acoustic wave in the frequency range less than 3000 Hz (eg, 1000 Hz to 3000 Hz) may be less than π/2. In this way, the synchronicity of the bone conduction sound wave and the air conduction sound wave can be increased, which can cause the bone conduction sound wave and the air conduction sound wave to overlap, thereby improving the listening effect. The time difference between the air conduction acoustic wave and the bone conduction acoustic wave received by the user may be less than a threshold value, such as 0.1 second.

In some embodiments, a pressure decompression port 522 (also referred to as a second port) may be provided in the housing. For example, a decompression hole 522 may be located on a wall of a first portion of the housing 520. The first cavity 523 may be in fluid communication with the exterior of the device 500 to output acoustic signals through the decompression hole 522. As a further example, the decompression hole 522 and the sound outlet 521 may be located on different side walls of the housing 520. As another example, the decompression hole 522 and the sound outlet 521 may be located on different side walls of the housing 520 that are not adjacent, for example, are substantially parallel to each other.

The decompression hole may be a through hole that helps equalize pressure between the first cavity of the housing 520 and the external environment. In some embodiments, vibration of the magnetic circuit system 511 relative to the housing 520 may increase or decrease the pressure in the first cavity 523. The decompression hole 522 may regulate the pressure in the first cavity 523, facilitating communication between the first cavity 523 and the external environment, thereby maintaining mutual movement between the housing 520 and magnetic circuit system 511 (and/or vibration diaphragm 531) and allowing the housing 520 to vibrate normally.

In addition, the decompression hole 522 allows the frequency response of the air conduction assembly to be adjusted at low frequencies. It should be noted that vibration of the magnetic circuit system 511 relative to the housing 520 may cause vibration of the air in the first cavity 523. Acoustic waves generated by the vibration of the air in the first cavity 523 may be transmitted outward through the decompression hole 522, which may cause sound leakage. In some embodiments, the decompression hole 522 may be specially designed to reduce or suppress sound leakage. For example, the decompression hole 522 may be larger in size such that the resonant peak (Helmholtz resonance) of the first cavity 523 of the housing 520 may correspond to a higher frequency. Thus, it is possible to substantially suppress the sound leakage at mid-low frequencies propagating from the decompression hole 522. In addition, the larger the size of the decompression hole 522, the lower the acoustic impedance can be, and the lower the sound pressure value of the acoustic waves generated in the decompression hole 522 can be. , which reduces sound leakage.

In some additional embodiments, a tuning grid (not shown) may be provided on the decompression hole 522 to reduce the intensity of the aforementioned resonant peak, thereby reducing the frequency response of the structure formed by the first cavity 523 and the decompression hole 522 to further suppress sound leakage. In some embodiments, the number of decompression holes may not be limited and may be one or more holes. The position of the decompression hole 522 may also be set to any position of the side wall corresponding to the first cavity 523.

In some embodiments, by adjusting the stiffness of the vibration plate 512 and/or housing 520 (through, for example, structural dimensions, material modulus, ribs, and/or other special mechanical structures), the output characteristics of bone conduction acoustic waves can be adjusted.

In some embodiments, the air conduction acoustic wave output characteristics may be adjusted by adjusting the shape, spring rate, and damping of the vibrating diaphragm 531. The air conduction acoustic wave output characteristics may be adjusted by adjusting the number, position, size, and/or shape of at least one of the air conduction acoustic wave output characteristics. holes 521 and/or decompression hole 522. For example, a damping structure (eg, a tuning grid) may be provided in the sound outlet 521 to achieve the acoustic effect of an air conduction unit.

It should be noted that the number, sizes, shapes (e.g., cross-sectional shapes) and/or location of one or more of the additional acoustic structures exemplified above (e.g., sound hole, sound tube, decompression hole, and/or tuning grid) may may be determined according to actual needs and may not be limited by this disclosure. In some embodiments, the number, sizes, shapes, and/or placement of one or more additional acoustic structures may be optimized in accordance with the sound leakage of the acoustic signal output device 500. In some embodiments, optimization may be performed according to the leakage frequency response curves below. Moreover, the spatial arrangement of the bone conduction unit and the air conduction unit and/or one or more components of the bone conduction unit and the air conduction unit cannot be limited by the present disclosure. For example, the spatial arrangement of the bone conduction node and the air conduction node may vary depending on the actual needs and cannot be limited. As another example, the position of the vibration diaphragm 531 in the housing 520, the orientation (eg, front side direction) of the vibration diaphragm 531, etc. may vary according to actual needs and may not be limited.

The acoustic signal output device provided in the present disclosure may combine a bone conduction unit (eg, bone conduction unit 510) and an air conduction unit to provide better acoustic effects and tactile sensations to the user. In some embodiments, the bone conduction acoustic waves and air conduction acoustic waves output by the acoustic signal output device may include sound waves of different frequencies.

In some embodiments, the sound outlet 521 of the acoustic device 500 may further include a sound tube connected to the sound hole. In some embodiments, air conduction acoustic waves passing through the sound hole may enter the sound tube and propagate in a specific direction through the sound tube. Thus, the sound tube can change the direction of propagation of air-conducted acoustic waves.

For example, in FIG. 6 is a diagram illustrating an apparatus for outputting acoustic signals according to some embodiments of the present disclosure. The acoustic signal output device 600 may be the same or similar to the acoustic signal output device 500 shown in FIG. 5. For example, the acoustic signal output device 600 may include a bone conduction unit 610, a housing 620, and an air conduction unit. The bone conduction assembly 610 and the air conduction assembly may be housed together in the same housing 620. As another example, the bone conduction assembly 610 may include a magnetic circuit system 611, one or more vibration plates 612, and a voice coil 613. conductivity may include a vibrating diaphragm 621. As a further example, a sound outlet 614 may be located on a wall of the housing 620 and in fluid communication with the rear cavity 624, and a decompression hole 625 may be located on a wall of the housing 620 and in fluid communication with front cavity 623. Additional description of the components of the acoustic signal output device 600 can be found elsewhere in this disclosure (eg, in the description with reference to FIG. 5).

Unlike the acoustic signal output device 500, the sound outlet 614 may include a sound tube 640, and an end of the sound tube 640 remote from the sound output hole 614 may face the user's ear when the user wears the acoustic signal output device. , shown in Fig. 6.

In some embodiments, the decompression hole 625 may not be a through hole. The decompression hole 625 may be in fluid communication with the outside of the device to output acoustic signals through a sound outlet 614 or a sound tube. As a further example, housing 620 may include a channel. The channel may be connected to the sound outlet 614 and the sound tube 640. The air in the front cavity 623 may flow from the front cavity 623 through the decompression hole 625 and the channel out through the sound outlet 614, and the sound tube 640. It should be noted that the sound tube in This embodiment is also applicable to the acoustic signal output devices in other embodiments of the present disclosure.

In fig. 7 is a diagram illustrating an apparatus for outputting acoustic signals according to some embodiments of the present disclosure. The acoustic signal output device 700 may be the same or similar to the acoustic signal output device 600 shown in FIG. 6. For example, the acoustic signal output device 700 may include a bone conduction unit 710, a housing 720, and an air conduction unit. The bone conduction assembly 710 and the air conduction assembly may be housed together in the same housing 720. As another example, the bone conduction assembly 710 may include a magnetic circuit system 711, one or more vibration plates 712, and a voice coil 713. The conduction device may include a vibrating diaphragm 731 that is coupled to the housing 720 and/or the bone conduction assembly 710. As an additional example, a sound outlet 721 and a sound tube 740 may be located on the wall of the housing 720 and in fluid communication with the rear cavity 724, and a decompression hole 722 may be located on the wall of the housing 720 and in fluid communication with the front cavity 723. Additionally a description of the components of the acoustic signal output device 700 can be found elsewhere in this disclosure (eg, in the description with reference to FIGS. 5 and 6).

As shown in FIG. 7, unlike the acoustic signal output device 600, the vibrating diaphragm 731 may be located around the circumference of the magnetic circuit system 711. The vibrating diaphragm 731 may include an annular plate or sheet. In some embodiments, the vibrating diaphragm 731 may be concave or convex, which allows for increased resiliency and improved frequency response of the vibrating diaphragm 731 at mid-low frequencies. Specifically, the inner side of the vibrating diaphragm 731 may be physically connected to an outer wall of the magnetic circuit system 711, and the outer side of the vibrating diaphragm 731 may be physically connected to the inner wall of the housing 720. The vibrating diaphragm 731, which is located around the circumference of the magnetic circuit system 711, allows reduce the space occupied by the vibration diaphragm 731, thereby reducing the volume of the device 700 for outputting acoustic signals. By reducing the volume and adjusting the position of the vibration diaphragm 731 of the housing 720, the volume and/or weight of the acoustic output device 700 can be effectively reduced.

In fig. 8 is a diagram illustrating an apparatus for outputting acoustic signals according to some embodiments of the present disclosure. The acoustic signal output device 800 may be the same or similar to the acoustic signal output device 600 shown in FIG. 6. For example, the acoustic signal output device 800 may include a bone conduction unit 810, a housing 820, and an air conduction unit. The bone conduction unit 810 and the air conduction unit may be housed together in the same housing 820. As another example, the bone conduction unit 810 may include a magnetic circuit system 811, one or more vibration plates 812, and a voice coil 813. As As an additional example, a sound hole 821 and a sound tube 840 may be located on the wall of the housing 820 and in fluid communication with the rear cavity 824, and a decompression hole 822 may be located on the wall of the housing 820 and in fluid communication with the front cavity 823. Additional description of the components of the output device acoustic signals 800 can be found elsewhere in this disclosure (eg, in the description with reference to FIGS. 5 and 6).

As shown in FIG. 8, unlike the acoustic signal output device 600, the air conduction assembly may include at least two vibration diaphragms. For example, the air conduction assembly may include a first vibration diaphragm 831 and a second vibration diaphragm 833. The first vibration diaphragm 831 may be the same or similar to the vibration diaphragm 531 shown in FIG. 5.

The first vibration diaphragm 831 may begin to vibrate due to vibration of the magnetic circuit system 811 and/or housing 820. The second vibration diaphragm 833 may begin to vibrate due to vibration of the housing 820 caused by vibration of the magnetic circuit system 811 and/or vibration of the air caused by vibration of the first vibration diaphragm. diaphragm 831. The second vibration diaphragm 833 may also be referred to as a passive vibration diaphragm 833.

The second vibration diaphragm 833 may be positioned between a lower surface of the housing 820 opposite the position of the vibration plate 812 of the bone conduction unit 810 and the first vibration diaphragm 831. Specifically, the second vibration diaphragm 833 may be located between the lower surface of the housing 820 and a plane in which the sound outlet 821 is located in a direction parallel to the first vibrating diaphragm 831. As shown in FIG. 8, a second vibration diaphragm 833 may be located near or on a lower surface of the housing 820. A second vibration diaphragm 833 may be physically coupled to the housing 820. The second vibration diaphragm 833 may be the same or similar to the vibration diaphragm 531 shown in FIG. 5. For example, the second vibrating diaphragm 833 may include a main portion and a secondary portion. The main portion may be adjacent to or physically connected to the bottom surface of housing 820. The auxiliary section may be ring-shaped and surround the main section. The auxiliary portion may be physically coupled to the housing 820. In some embodiments, the main portion may include a block having a mass, and the auxiliary portion may include a spring.

In some embodiments, the resonant frequency of the lower surface of housing 820 may be determined based on the material of the lower surface of housing 820. In some embodiments, the material and thickness of the lower surface of housing 820 may influence the resonant frequency of the lower surface of housing 820. For example, if the material of the lower surface of housing 820 is relatively soft, the resonant frequency of the lower surface of the housing 820 may be relatively low. Conversely, if the material of the bottom surface of housing 820 is relatively hard, the resonant frequency of the bottom surface of housing 820 may be relatively high. The resonant frequency of the lower surface of the housing 820 may be equal to or less than a threshold value, for example, equal to or less than 10 kHz, or equal to or less than 5 kHz, or equal to or less than 1 kHz, etc., by adjusting the hardness of the material of the lower surface of the housing 820 .

In some embodiments, the resonant frequency of the bottom surface of housing 820 may be determined based on the passive vibration diaphragm 833. For example, the resonant frequency of the bottom surface of housing 820 may be equal to the resonant frequency of the passive vibration diaphragm 833.

In some embodiments, the resonant frequency of the passive vibration diaphragm 833 may exceed the frequency of the structure including the magnetic circuit system 811 and the first vibration diaphragm 831. When the vibration frequency of the magnetic circuit system 811 is less than the resonant frequency of the passive vibration diaphragm 833, the vibration of the passive vibration diaphragm 833 may correspond to the vibration of the housing 820. In other words, the phase and frequency of vibration of the passive vibration diaphragm 833 may correspond to the vibrations of the housing 820. The vibration of the passive vibration diaphragm 833 may be opposite to the vibration of the first vibration diaphragm 831. The air in the rear cavity 824 may be compressed or expanded, and the acoustic waves air conduction may be formed along with compression or expansion of air in the rear cavity 824 when the frequency of the structure including the magnetic circuit system 811 and the first vibrating diaphragm 831 is less than the resonant frequency of the passive vibrating diaphragm 833. In this case, the sound leakage phase caused by the vibration of the passive vibrating diaphragm 833 , may be opposite to the sound leakage phase caused by the upper surface of the housing 820 where the vibration plate 812 is located when the upper surface of the housing 820 vibrates and presses against the surface under the action of the vibration plate 812. The sound leakage caused by the vibration of the passive vibration diaphragm 833 and the sound leakage caused by the upper surface of the housing 820 can be suppressed, thereby suppressing or reducing the sound leakage of the acoustic signal output device 800. When the vibration frequency of the magnetic circuit system 811 exceeds the resonant frequency of the passive vibration diaphragm 833, the vibration amplitude of the passive vibration diaphragm 833 relative to the housing 520 can be very small, and the amplitude of the air compressed by the passive vibration diaphragm 833 can be very small, so the sound leakage generated by the passive vibration diaphragm 833 can also be very small.

In fig. 9 is a schematic diagram illustrating an apparatus for outputting acoustic signals according to some embodiments of the present disclosure. The acoustic signal output device 900 may be the same or similar to the acoustic signal output device 600 shown in FIG. 6. For example, the acoustic output device 900 may include a bone conduction assembly 910, a housing 920, and an air conduction assembly. The bone conduction assembly 910 and the air conduction assembly may be housed together in the same housing 920. As another example, the bone conduction assembly 910 may include a magnetic circuit system 911, one or more vibration plates 912, and a voice coil 913. B As a further example, a sound hole 921 and a sound tube 940 may be located on the wall of the housing 920 and in fluid communication with the rear cavity 924, and a decompression hole 922 may be located on the wall of the housing 920 and in fluid communication with the front cavity 923. As yet another For example, the air conduction assembly may include a vibration diaphragm 931. The vibration diaphragm 931 may be the same or similar to the vibration diaphragm 531 shown in FIG. 5. Additional description of the components of the acoustic signal output device 900 can be found elsewhere in this disclosure (eg, in the description with reference to FIGS. 5 and 6).

As shown in FIG. 9, unlike the acoustic output device 600, the vibration diaphragm 931 may be located separately from the magnetic circuit system 911, and the vibration diaphragm 931 may be physically coupled to the housing 920. The vibration of the housing 920 caused by the vibration of the bone conduction node 910 when the bone conduction node conduction 910 produces acoustic bone conduction waves, can cause vibration of the vibration diaphragm 931. When the vibration diaphragm 931 has a smaller resonant peak (for example, the vibration diaphragm 931 is made of a softer material, or the vibration diaphragm 931 is equipped with a “wrinkled” structure that reduces its hardness) , the vibration diaphragm 931 can better respond to low-frequency vibration generated by the housing 920. In other words, the vibration diaphragm 931 can provide lower-frequency sounds, thereby increasing the volume of low-frequency air-conducted acoustic waves.

In fig. 10 is a schematic diagram illustrating an apparatus for outputting acoustic signals according to some embodiments of the present disclosure. The acoustic signal output device 1000 may be the same or similar to the acoustic signal output device 500 shown in FIG. 5, or the acoustic signal output device 800 shown in FIG. 8. For example, the acoustic signal output device 1000 may include a bone conduction unit 1010, a housing 1020, and an air conduction unit. The bone conduction unit 1010 and the air conduction unit may be housed together in the same housing 1020. As another example, the bone conduction unit 1010 may include a magnetic circuit system 1011, one or more vibration plates 1012, and a voice coil 1013. As As an additional example, a sound hole 1021 and a sound tube 1040 may be located on the wall of the housing 1020 and in fluid communication with the rear cavity 1024, and a decompression hole 1022 may be located on the wall of the housing 1020 and in fluid communication with the rear cavity 1024. Additional Description of Output Device Components acoustic signals 1000 can be found elsewhere in the present disclosure (eg, in the description with reference to FIGS. 5 and 6). As another example, the air conduction assembly may include a first vibration diaphragm 1031 and a second vibration diaphragm 1033. The first vibration diaphragm 1031 may be the same or similar to the vibration diaphragm 531 shown in FIG. 5. The second vibrating diaphragm 1033 may be the same or similar to the second vibrating diaphragm 833 shown in FIG. 8.

As shown in FIG. 10, unlike the acoustic signal output device 800, the second vibration diaphragm 1033 may be located in a rear cavity 1024 of the housing 1020, which is separated from the bottom surface of the housing 1020. In addition, the second vibration diaphragm 1033 may be located between the plane in which the sound output hole 1021 is located in a direction parallel to the first vibration diaphragm 1031 and the first vibration diaphragm 1031. In some embodiments, the second vibration diaphragm 1033 may be located parallel to the first vibration diaphragm 1031. In some embodiments, the second vibration diaphragm 1033 may be located obliquely with respect to the first vibration diaphragm 1031.

In some embodiments, the second vibrating diaphragm 1033 may divide the rear cavity 1024 into a first subcavity and a second subcavity. The first subcavity may be formed by the second vibration diaphragm 1033 and the first vibration diaphragm 1031, and the second subcavity may be formed by the second vibration diaphragm 1033 and the lower surface of the housing 1020.

In some embodiments, vibration of the housing 1020 caused by vibration of the bone conduction assembly 1010 may cause a pressure change in the first sub-cavity between the first vibration diaphragm 1031 and the second vibration diaphragm 1033 because the magnetic circuit system 1011 and the first vibration diaphragm 1031 are stationary relative to the housing 1020. A change in pressure in the first subcavity may cause the air in the first subcavity to vibrate. Vibration of air in the first subcavity may cause vibration of the second vibrating diaphragm 1033. Vibration of the second vibrating diaphragm 1033 may cause vibration of the air in the second subcavity, and vibration of the housing 1020 may also cause vibration of the air in the second subcavity. The phase of the air vibration caused by the vibration of the second vibration diaphragm 1033 and the phase of the air vibration caused by the vibration of the housing 1020 may be the same, which allows the volume of air conduction acoustic waves output from the sound outlet 1021 to be increased.

Vibration of the housing 1020 caused by vibration of the bone conduction assembly 1010 may cause vibration of the first vibration diaphragm 1031. Vibration of the first vibration diaphragm 1031 and/or housing 1020 may cause vibration of the air between the first vibration diaphragm 1031 and the second vibration diaphragm 1033, and vibration of the air between the first vibration diaphragm 1033. diaphragm 1031 and the second vibration diaphragm 1033 and vibration of the housing 1022 may cause the second vibration diaphragm 1033 to vibrate. When the second vibration diaphragm 1033 has a lower resonant peak (for example, the second vibration diaphragm 1033 is made of a softer material, or the passive vibration diaphragm 1033 is provided with "wrinkles" true" structure that reduces its hardness), the second vibration diaphragm 1033 can better respond to the vibration of the air between the first vibration diaphragm 1031 and the second vibration diaphragm 1033 caused by the low frequency vibration generated by the bone conduction unit 1010. In other words, the second vibrating diaphragm 1033 can produce lower frequency sounds, thereby increasing the volume of low frequency air conduction acoustic waves. Acoustic signal output device 1000 may provide rich sound (eg, lower frequency sound) that may increase the volume of air conduction acoustic waves.

In fig. 11 is a diagram illustrating an apparatus for outputting acoustic signals according to some embodiments of the present disclosure. As shown in FIG. 11, the acoustic signal output device 1100 may include a bone conduction unit 1110, a housing 1120, and an air conduction unit. The bone conduction node 1110 may be the same or similar to the bone conduction node 510 of the acoustic signal output device 500 shown in FIG. 5. For example, bone conduction assembly 1110 may include a magnetic circuit system 1111, one or more vibration plates 1112, and a voice coil 1113. Additional description of components of bone conduction assembly 1110 of acoustic output device 1100 may be found elsewhere in this disclosure (e.g. , in the description with reference to Fig. 5). The acoustic signal output device 1100 may further include an audio outlet 1121 located on the housing 1120 and in fluid communication with the cavity of the housing 1120, and a decompression hole 1122 may be located on a wall of the housing 1120 and in fluid communication with the cavity of the housing 1120.

As shown in FIG. 11, unlike the acoustic signal output device 500, the air conduction unit may include a vibration diaphragm 1133 and a vibration transmission unit 1131. Vibration transmission assembly 1131 may be physically coupled to bone conduction assembly 1110, vibration diaphragm 1133, and/or housing 1120. Vibration transmission assembly 1131 may be configured to transmit vibration from bone conduction assembly 1110 and/or housing 1120 to vibration diaphragm 1133 to generate acoustic air conduction waves. The vibration direction of the bone conduction assembly 1110 and/or the housing 1120 may be changed by the vibration transmission assembly 1131 during vibration transmission. In other words, the direction of vibration of the vibrating diaphragm 1133 may be different from the direction of vibration of the bone conduction assembly 1110 and/or housing 1120.

In some embodiments, the vibration diaphragm 1133 may be located in the sound hole 1121. The vibration diaphragm 1133 and the magnetic circuit system 1111 may be coupled through a vibration transmission assembly 1131, and the magnetic circuit system 1111 may be coupled to the housing 1120 through a vibration transmission assembly 1131. The vibration transmission assembly 1131 may include multiple connecting rods. For example, one of a plurality of connecting rods may be physically coupled to the vibrating diaphragm 1133, one of a plurality of connecting rods may be physically coupled to the magnetic circuit system 1111, one of a plurality of connecting rods may be physically coupled to the housing 1120, and a plurality of connecting rods may be physically connected to each other.

The vibration transmission unit 1131 may change the vibration direction of the housing 1120 and transmit the vibration of the housing 1120 with the changed vibration direction to the vibration diaphragm 1133. For example, in FIG. 11, housing 1120 can vibrate in left and right directions relative to magnetic circuit system 1111, thereby generating bone conduction acoustic waves. The housing 1120 may transmit vibration of the magnetic circuit system 1111 to the cochlea of the human inner ear through the upper surface of the housing 1120 through the human bones. The vibration transmission unit 1131 can convert the left and right vibration directions of the housing 1120 into up and down vibrations and transmit the vibrations to the vibration diaphragm 1133, so that the vibration diaphragm 1133 can vibrate up and down, thereby generating air conduction acoustic waves. In some embodiments, the sound outlet 1121 may be directed directly toward the person's ear, that is, the vibrating diaphragm 1133 vibrates toward the person's ear.

In fig. 12 is a schematic diagram illustrating an apparatus for outputting acoustic signals according to some embodiments of the present disclosure. The acoustic signal output device 1200 may be the same or similar to the acoustic signal output device 600 shown in FIG. 6. For example, the acoustic signal output device 1200 may include a bone conduction unit 1210, a housing 1220, and an air conduction unit. The bone conduction assembly 1210 and the air conduction assembly may be housed together in the same housing 1220. As another example, the bone conduction assembly 1210 may include a magnetic circuit system 1211, one or more vibration plates 1212, and a voice coil 1213. conductivity may include a vibrating diaphragm 1231. As a further example, a sound hole 1221 and a sound tube 1240 may be located on the housing 1220 and in fluid communication with the rear cavity 1224, and a decompression hole 1222 may be located on a side wall of the housing 1220 and in fluid communication with a front cavity 1223. Additional description of the components of the acoustic signal output device 1200 can be found elsewhere in this disclosure (eg, in the description with reference to FIGS. 5 and 6).

As shown in FIG. 12, unlike the acoustic signal output device 600, the acoustic signal output device 1200 may further include an elastic member 1250 (also called a vibration transmission plate) located between the magnetic circuit system 1211 and the housing 1220. In particular, the elastic member 1250 may be located in the front cavity 1223, and the resilient member 1250 may physically connect the magnetic circuit system 1211 and the housing 1220. The resilient member 1250 may have a better locking effect on the magnetic circuit system 1211 and prevent the magnetic circuit system 1211 from flipping over during vibration of the housing 1220, thereby thereby improving the sound quality effect of the device 1200 for outputting acoustic signals.

In addition, the elastic element 1250 may have a certain resonant frequency that provides a resonant peak for vibration of the housing 1220, such that the bone conduction acoustic waves produced by the bone conduction unit 1210 may have a greater volume near the resonant peak of the elastic element 1250. In some embodiments implementation, by adjusting one or more characteristics of the vibrating diaphragm 1231 (eg, dimensions, modulus of material elasticity, ribs, and other special mechanical properties) and the elasticity coefficient of the elastic element 1250, the output characteristic of bone conduction acoustic waves can be adjusted. It should be noted that the elastic member 1250 in this embodiment is not limited to the scope of the present disclosure, and is also applicable to the acoustic signal output device shown in other drawings of the present disclosure.

In fig. 13 is a schematic diagram illustrating an apparatus for outputting acoustic signals according to some embodiments of the present disclosure. The acoustic signal output device 1300 may be the same or similar to the acoustic signal output device 600 shown in FIG. 6. For example, the acoustic signal output device 1300 may include a bone conduction unit 1310, a housing 1320, and an air conduction unit. As another example, the bone conduction assembly 1310 may include a magnetic circuit system 1311, one or more vibrating plates 1312, and a voice coil 1313. The air conduction assembly may include a vibrating diaphragm 1331. As a further example, a sound hole 1321 and a sound tube 1340 may be located on housing 1320 and in fluid communication with rear cavity 1324, and decompression hole 1322 may be located on housing 1320 and in fluid communication with front cavity 1323. Additional description of components of acoustic signal output device 1300 can be found elsewhere in this disclosure. (eg in the description with reference to FIGS. 5 and 6).

As shown in FIG. 13, unlike the acoustic output device 600, the housing 1320 may be provided with at least one test hole 1326 (also referred to as a third hole). In some embodiments, the debug hole 1326 may be located on a side wall that is not adjacent to the side wall of the housing where the sound hole 1321 is located. In some embodiments, the debug hole 1326 may be located on one or more side walls adjacent to the side wall where a sound hole 1321 is located. For example, the housing 1320 may include at least four side walls physically connected in series. The sound outlet 1321 may be located on the first side wall, and the decompression hole 1322 may be located on the second side wall that is not adjacent to the first side wall. The first side wall and the second side wall may be substantially parallel. The debug hole 1326 may be located on the second side wall, third side wall, fourth wall, etc. The third side wall and the fourth side wall may be adjacent to the first side wall. The size (eg, area) may be in the range of 1 to 50 square millimeters, or in the range of 5 to 30 square millimeters, or in the range of 10 to 20 square millimeters, etc.

In some embodiments, the debug hole 1326 may be located on a side wall opposite the side wall of the housing where the sound hole 1321 is located to increase the resonant frequency of the air in the rear cavity 1324 and/or in the front cavity 1323. In some embodiments, the resonant frequencies of the air in the rear cavity 1324 and the front cavity 1323 may be the same. In some embodiments, the resonant frequencies of the air in the rear cavity 1324 and/or in the front cavity 1323 may be equal to or greater than 4000 Hz, or equal to or greater than 5000 Hz, etc. In some embodiments, the resonant frequency of the air in the rear cavity 1324 may be in the range of 5500 Hz to 6000 Hz, or in the range of 4000 Hz to 6000 Hz, etc. In some embodiments, the resonant frequency of the air in the front cavity 1323 may be in the range of 4500 Hz to 5000 Hz, or in the range of 4000 Hz to 5000 Hz, etc. The resonant frequencies of the air in the rear cavity 1324 and in the front cavity 1323 can be adjusted in the manner described with reference to FIG. 4.

In some embodiments, the debugging port 1326 and/or the decompression port 1322 may be pass-through. In some embodiments, the debug hole 1326 and/or the decompression hole 1322 may be blind. The debug port 1326 and/or the decompression port 1322 may be in fluid communication with the exterior of the device for outputting acoustic signals through an outlet port 1321 or an audio tube 1340. As a further example, the housing 1320 may include a channel (or a communicating tube). The duct may be coupled to a sound outlet 1321 and a sound tube 1340. Air in the front cavity 1323 and/or the rear cavity 1324 may flow out of the front cavity 1323 and/or the rear cavity 1324 through a decompression hole 1322 and/or a debugging hole 1326 and a channel out through sound hole 1321 and sound tube 1340.

In some embodiments, the debugging port 1326 and/or the decompression port 1322 may be pass-through. At least one of the one or more second openings or the one or more third openings may be covered with a sound-proofing material such as cotton. The acoustic resistance material may have an acoustic impedance in the range of 5 to 500 ril mks, or in the range from 10 to 260 ril mks, or in the range from 20 to 200 ril mks, etc.

Air conduction sound waves (also called original air conduction sound waves) generated by the air conduction assembly may collide with and reflect from the bottom surface of housing 1320 during transmission. The reflected air conduction sound waves and original air conduction sound waves may produce standing waves, resulting in distortion of the output sound at the sound outlet 1321. In this embodiment, by placing the debug hole 1326 in the housing 1320, a portion of the air conduction sound waves can be output directly from the debug hole 1326, preventing a portion of the air conduction sound waves from reflecting and producing standing waves with the original sound waves of air conduction.

In some embodiments, housing 1320 may further include a connection tube (not shown) for connecting the front cavity 1323 and the rear cavity 1324. For example, the connection tube may be located between the decompression hole 1322 and the debug hole 1326. The sound output at the end of the connection tube in the front cavity 1323 may be in antiphase to the sound output at the other end of the connecting tube in the rear cavity 1324, which can cancel each other, thereby achieving a better effect of reducing sound leakage.

In some embodiments, the decompression hole 1322 may be provided with a damping structure (eg, a tuning grid). The damping structure provided for the decompression hole 1322 may be configured to increase acoustic resistance and adjust (e.g., reduce) the amplitude of acoustic waves leaking from the decompression hole 1322.

In some embodiments, to increase the volume of sound output from sound tube 1340 and reduce the volume of sound leakage at test hole 1326, a damping structure (eg, a tuning grid) may be provided at test hole 1326. The damping structure provided for the development hole 1326 may be configured to increase the acoustic resistance and adjust (for example, reduce) the amplitude of the acoustic waves leaking from the development hole 1326. When it is possible to suppress the amplitude of the acoustic waves leaking from the development hole 1326 and the amplitude of the acoustic waves leaking from the decompression hole 1322, the acoustic waves leaking from the debugging hole 1326 and the acoustic waves leaking from the decompression hole 1322 can be suppressed, which can reduce sound leakage, increase the volume of the sound output from the sound tube 1340.

It should be noted that the development hole 1326 in this embodiment is not limited to the embodiment shown in FIG. 13 and may also be used when described with reference to FIGS. 5-12 and to the embodiment shown in FIG. 13, or similar devices for outputting acoustic signals. In some embodiments, the number of debug holes and decompression holes may be the same or different.

In fig. 14 and fig. 15 shows cross-sectional views of vibrating diaphragms according to some embodiments of the present disclosure. As shown in FIG. 14, the vibrating diaphragm 1400 may include a main portion 1410 and an extension portion 1420. The main portion 1410 may include a base plate and a side wall. The base plate and side wall may define a space that may be configured to accommodate at least a portion of a magnetic circuit system as described elsewhere in the present disclosure.

The extension portion 1420 may be flush with the top of the main portion 1410 (eg, the top side wall of the main portion 1410), and the extension portion 1420 may have a concave area 1421 that flexes toward the base plate of the main portion 1410. In some embodiments In an embodiment, the elasticity coefficient of the vibrating diaphragm 1400 can be adjusted by adjusting the characteristics of the vibrating diaphragm 1400, such as the height of the main portion 1410, the height of the extension portion 1420 relative to the main portion 1410, the height of the concave region 1421, the thickness of the main portion 1410 and/or the extension portion 1420, etc. . For example, the greater the height of the concave zone 1421, the smaller the thickness of the extension portion 1420, and the greater the number of concave zones, the greater the elasticity coefficient of the vibrating diaphragm 1400 can be.

The vibration diaphragm 1500 shown in FIG. 15 may be similar to the vibrating diaphragm 1400 shown in FIG. 14. For example, the vibrating diaphragm 1500 may include a main portion 1510 and an extension portion 1520. Unlike the vibrating diaphragm 1400, the extension portion 1520 may have a concave area 1521 protruding from the base plate of the main portion 1510. In some embodiments, the vibratory spring rate The diaphragms 1500 can be adjusted by adjusting characteristics of the vibrating diaphragm 1500, such as the height of the main portion 1510, the height of the extension portion 1520 relative to the main portion 1510, the height of the concave portion 1521, the thickness of the main portion 1510 and/or the extension portion 1520, etc. For example, the greater the height of the concave zone 1521, the smaller the thickness of the extension portion 1520, and the greater the number of convex zones, the greater the elasticity coefficient of the vibrating diaphragm 1500 can be.

Comparing the vibration diaphragm 1400 shown in FIG. 14, and the vibrating diaphragm 1500 shown in FIG. 15, the vibrating diaphragm 1400 may have a lower elasticity coefficient and a lower low-frequency resonance frequency than the vibrating diaphragm 1500 when the vibrating diaphragm 1400 and the vibrating diaphragm 1500 contain the same material. In some embodiments, extension portion 1420 of vibrating diaphragm 1400 and extension portion 1520 of vibrating diaphragm 1500 may be provided with openings (not shown). The holes may be through holes, and the first cavity and the second cavity of the acoustic signal output device body, as described elsewhere in the present disclosure, may be in fluid communication through the holes. Since the sounds generated at both ends of the holes are opposite in phase and cancel each other out, sound leakage generated by the acoustic output device (eg, sound leakage from a decompression hole) can be effectively reduced. The vibration diaphragm 1500 and the vibration diaphragm 1500 provided in this embodiment can be applied to the above-mentioned acoustic signal output device (for example, the acoustic signal output device shown in Fig. 5-13, thereby improving the sound output effect of the output device acoustic signals and reducing sound leakage.

In fig. 16 is a schematic representation of various positions relative to an acoustic output device according to some embodiments of the present disclosure. As shown in FIG. 16 shows four positions relative to the acoustic signal output device, indicated by points p1, p2, p3 and p4. p1 is located at a location close to the user's skin when the user wears the device for outputting acoustic signals. p1 can also be called the front side of the device for outputting acoustic signals. p3 is located at a position that is away from the user's skin when the user wears the acoustic signal output device. p3 may also be referred to as the rear side of the device for outputting acoustic signals. p2 is located adjacent to the sound tube, as described elsewhere in this disclosure. p4 is located adjacent to the decompression hole, as described elsewhere in this disclosure.

In fig. 17-21 are schematic representations of leakage frequency response curves at various positions relative to various acoustic signal output devices shown in FIGS. 16, according to some embodiments of the present disclosure. The leakage frequency response curve of the acoustic signal output device refers to a curve representing the variation of the sound leakage of the acoustic signal output device along with the frequency of the audio signal. The horizontal axis represents the frequency of the sound signal input to the device for outputting acoustic signals. The vertical axis represents the sound leakage volume of the acoustic signal output device at a position (eg p1, p2, p3, p4). The leakage frequency response curves L1-L4 shown in each of FIGS. 17 to 21 represent the change in sound leakage of the acoustic signal output device at positions p1 to p4, respectively, depending on the frequency of the audio signal. The leakage frequency response curves S1 to S5 shown in each of FIGS. 22 to 25 represent the change in sound leakage of various acoustic signal output devices at each of the positions p1 to p4, respectively, along with the frequency of the sound signal.

In fig. 17 shows leakage frequency response curves L1 to L4 of the first acoustic signal output device, which includes a sound tube and a decompression hole located on two opposite side walls of the acoustic signal output device body. The first acoustic signal output device may be the same or similar to the acoustic signal output device 600 shown in FIG. 6.

In fig. 18 shows leakage frequency response curves L1 to L4 of a second acoustic signal output device, which includes a sound tube and a decompression hole located on two opposite side walls of the acoustic signal output device body. The second acoustic signal output device further includes at least one debugging hole located on the side wall where the decompression hole is located. The second acoustic signal output device may be the same or similar to the acoustic signal output device 1300 shown in FIG. 13.

In fig. 19 shows leakage frequency response curves L1 to L4 of the third acoustic signal output device, which includes a sound tube and a decompression hole located on two opposite side walls of the acoustic signal output device body. The third acoustic signal output device further includes at least one debugging hole located on the side wall where the decompression hole is located. The third acoustic signal output device may be the same or similar to the acoustic signal output device 1300 shown in FIG. 13. Unlike the second acoustic signal output device, the volume of the rear cavity of the third acoustic signal output device is smaller than the volume of the second acoustic signal output device.

In fig. 20 shows leakage frequency response curves L1 to L4 of the fourth acoustic signal output device, which includes a sound tube and a decompression hole located on two opposite side walls of the acoustic signal output device body. The fourth acoustic signal output device further includes at least one debugging hole located on the side wall where the decompression hole is located. The fourth acoustic signal output device may be the same or similar to the acoustic signal output device 1300 shown in FIG. 13. Unlike the second device for outputting acoustic signals, the sound tube and decompression hole are in flow communication with the debugging hole. In other words, the decompression hole and debug hole are not through holes.

In fig. 21 shows leakage frequency response curves L1 to L4 of a fifth acoustic signal output device, which includes an audio tube and a first decompression hole located on two opposite side walls of the acoustic signal output device body. The fourth acoustic signal output device further includes at least one debugging hole located on the side wall where the first decompression hole is located. The fourth acoustic signal output device may be the same or similar to the acoustic signal output device 1300 shown in FIG. 13. The sound tube and the first decompression hole are in flow communication with the debugging hole. In other words, the first decompression hole and the debug hole are not through-hole. Unlike the fourth acoustic signal output device, the fifth acoustic signal output device further includes a second decompression hole located on a side wall where the first decompression hole is located. The second decompression hole is through.

In fig. 22-25 are schematic diagrams showing a comparison of the leakage frequency response curves of various acoustic signal output devices at each position shown in FIG. 16, according to some embodiments of the present disclosure. As shown in FIG. 22, leakage frequency response curves S1 to S5 are shown at position p1 of the first acoustic signal output device, the second acoustic signal output device, the third acoustic signal output device, the fourth acoustic signal output device and the fifth acoustic signal output device, as shown. in fig. 17-21. As shown in FIG. 23, leakage frequency response curves S1 to S5 are shown at position p2 of the first acoustic signal output device, the second acoustic signal output device, the third acoustic signal output device, the fourth acoustic signal output device and the fifth acoustic signal output device, as shown. in fig. 17-21. As shown in FIG. 24, leakage frequency response curves S1 to S5 are shown at position p3 of the first acoustic signal output device, the second acoustic signal output device, the third acoustic signal output device, the fourth acoustic signal output device and the fifth acoustic signal output device, as shown. in fig. 17-21. As shown in FIG. 25, leakage frequency response curves S1 to S5 are shown at position p4 of the first acoustic signal output device, the second acoustic signal output device, the third acoustic signal output device, the fourth acoustic signal output device and the fifth acoustic signal output device, as shown. in fig. 17-21.

According to FIG. 17-19 and 21, it can be concluded that the sound leakage at most frequencies above 1000 Hz is greater than at frequencies below 1000 Hz.

According to FIG. 17, leakage frequency response curves L1 to L4 of the first acoustic signal output device, which does not include a debugging hole at various positions p1 to p4, especially at the front side p1 and the rear side p3, include a first peak and a second peak at points p1-p4 at frequencies around 2000 Hz and 2200 Hz, respectively. The first peak at 2000 Hz is caused by the front cavity of the first acoustic signal output device, and the second peak at 2200 Hz is caused by the rear cavity of the first acoustic signal output device. According to FIG. 18, leakage frequency response curves L1 to L4 of the second acoustic signal output device, which includes a debugging hole at various positions p1 to p4, especially at the front side p1 and the rear side p3, include a first peak and a second peak at frequencies of about 2000 Hz and 4800 Hz. By comparing the leakage frequency response curves L1-L4 of the first acoustic signal output device and the second acoustic signal output device, it can be concluded that the debug hole causes the second peak caused by the rear cavity to move towards a higher frequency. Thus, the debug hole allows the resonant frequency (that is, the peaks in the leakage frequency response curves L1-L4) of the air in the rear cavity to be increased. According to FIG. 22-25, when comparing the leakage frequency response curve S1 of the first acoustic output device and the leakage frequency response curve S2 of the second acoustic output device shown in each of FIGS. 22-25, the sound leakage of the second acoustic signal output device occurs at position p2 (that is, the position around the sound tube) in the debugging hole, but the sound leakage of the second acoustic signal output device occurs in other positions such as p1, p3, and p4 , obviously does not change.

According to FIG. 19, leakage frequency response curves L1-L4 of the third acoustic signal output device, which includes a rear cavity with a smaller volume than that of the second acoustic signal output device at various positions p1-p4, include two peaks at frequencies. By comparing the leakage frequency response curves L1-L4 of the second acoustic signal output device and the third acoustic signal output device, it can be concluded that the second peak in FIG. 18 caused by the posterior cavity shifts to a higher frequency as the volume of the posterior cavity decreases, as shown in FIG. 19. According to FIG. 22-25, comparing the leakage frequency response curve S2 of the second acoustic signal output device and the leakage frequency response curve S3 of the third acoustic signal output device at each position p1, p2, p3 and p4, the sound leakage of the third acoustic signal output device at each position p1, p2, p3 and p4 do not change obviously, since the volume of the posterior cavity decreases.

According to FIG. 20, leakage frequency response curves L1 to L4 of the fourth acoustic signal output device, which includes a sound tube, a decompression hole and a debugging hole in communication, include a first peak at a frequency of 700 Hz and a second peak at a frequency exceeding 1000 Hz. Hz By comparing the leakage frequency response curves L1-L4 of the fourth acoustic signal output device and the fifth acoustic signal output device, it can be concluded that the first peak in FIG. 20 moves to a lower frequency, which is due to the large volume of the cavity, since the anterior cavity and the rear cavity are connected by flow. According to FIG. 22-25, when comparing the leakage frequency characteristic curve S4 of the fourth acoustic signal output device and the leakage frequency characteristic curve S5 of the fifth acoustic signal output device, the sound leakage at positions p2 and p4 of the fourth acoustic signal output device (that is, at positions on the audio signal tube) and decompression is clearly reduced, especially at mid-low frequencies).

According to FIG. 21, leakage frequency response curves L1 to L4 of the fifth acoustic signal output device, which includes a sound tube, a first decompression hole, a second decompression hole and a debugging hole in fluid communication, include a first peak and a second peak. Comparing the leakage frequency response curves L1-L4 of the second acoustic output device and the fifth acoustic output, it can be concluded that the second peak in FIG. 21 moves to a higher frequency. According to FIG. 22-25, when comparing the leakage frequency response curve S2 of the second acoustic output device and the leakage frequency response curve S5 of the fifth acoustic output device, it can be seen that the sound leakage of the fifth acoustic output device obviously does not change at position p2 (that is, around sound tube) with respect to the second acoustic signal output device, but is clearly reduced at position p4 (ie around the second decompression hole) with respect to the second acoustic signal output device.

The basic concepts have been described above. It will be appreciated that those skilled in the art, the above detailed disclosure is exemplary only and is not intended to limit the present disclosure. Although not expressly stated herein, various modifications, improvements, and amendments may be made to the present disclosure by those skilled in the art. It is intended that these changes, improvements, and modifications are proposed in this disclosure and are within the spirit and scope of the illustrative embodiments of the present disclosure.

Moreover, certain terminology has been used to describe embodiments of the present disclosure. For example, “one embodiment,” “an embodiment,” and/or “certain embodiments” mean a certain feature, structure, or characteristic related to at least one embodiment of the present disclosure. Thus, it should be emphasized and noted that “one embodiment” or “one embodiment” or “alternative embodiment” mentioned twice or more in different positions in this specification do not necessarily refer to the same embodiment . In addition, certain features, structures or features in the present disclosure of one or more embodiments may be suitably combined.

In addition, those skilled in the art will appreciate that various aspects of the present disclosure may be explained and described in terms of a number of patentable categories or situations, including any new and useful process, machine, product or combination of substances, or any new and useful improvements for them. Accordingly, all aspects of the present disclosure may be implemented entirely in hardware, may be implemented entirely in software (including firmware, resident software, microcode, etc.), or may be implemented in a combination of hardware. and software. The above-mentioned hardware or software may be referred to as a “unit”, “module”, “machine”, “unit”, “component” or “system”. In addition, aspects of the present disclosure may appear in the form of a computer product located on one or more computer-readable storage media, the product including computer-readable program code.

The computer storage medium may contain a propagated information signal containing computer program code, for example, in a baseband or as part of a carrier wave. The propagating signal may take any of a variety of forms, including electromagnetic forms, optical forms, etc., or a suitable combination thereof. The computer storage medium may be any computer-readable medium other than a computer-readable storage medium, and the storage medium may be connected to an instruction execution system, hardware device, or apparatus for communicating, distributing, or transmitting a program to be used. Program code residing on a computer storage medium may be transmitted through any suitable medium, including radio waves, cable, fiber optic cable, RF or similar media, or any combination of the foregoing media.

The computer program codes required to operate each portion of this disclosure may be written in any one or more programming languages, including object-oriented programming languages such as Java, Scala, Smalltalk, Eiffel, JADE, Emerald, C. The program code may be executed entirely on the user's computer, partially on the user's computer as a separate software package, partially on the user's computer and partially on a remote computer, or entirely on a remote computer or server. In the latter scenario, the remote computer can be connected to the user's computer through any type of network, including a local area network (LAN) or wide area network (WAN), or the connection can be made to an external computer (for example, over the Internet using an Internet service provider), or in a cloud computing environment or offered as a service such as software as a service (SaaS).

In addition, unless expressly stated in the claims, the order of processing of the elements and sequences described in this disclosure, the use of numbers and letters, or the use of other names are not intended to limit the order of the procedures and methods of the present disclosure. Although the foregoing disclosure discusses by various examples what are currently believed to be many useful embodiments of the present disclosure, it is to be understood that such details are provided solely for this purpose and that the appended claims are not limited to the disclosed embodiments, but rather, are intended to cover modifications and equivalent devices that are within the spirit and scope of the disclosed embodiments. For example, although the implementation of the various components described above may be embodied in a hardware device, it may also be implemented as a pure software solution, such as installation on an existing server or mobile device.

Likewise, it should be understood that in the above description of embodiments of the present disclosure, various features are sometimes grouped together in one embodiment, figure, or description thereof for the purpose of simplifying the disclosure to aid in understanding one or more of the various embodiments. However, the present disclosure does not mean that the subject matter of the present disclosure requires more features than those mentioned in the claims. Rather, the claimed subject matter of the invention may not only consist of all the features of one embodiment disclosed above.

In some embodiments, numbers are used to describe the quantities of ingredients and attributes. It should be understood that such numbers used to describe embodiments use the modifier “about,” “approximately,” or “substantially” in some examples. Unless otherwise indicated, “about,” “approximately,” or “substantially” means that the number may vary by ±20%. Accordingly, in some embodiments, the numerical parameters used in the description and claims are approximate values, and the approximate values may be changed in accordance with the desired characteristics of individual embodiments. In some embodiments, the numerical parameters must take into account the given effective digits and use a method for storing the overall digits. Although the numerical ranges and parameters used to confirm the width of the range in some embodiments of the present disclosure are approximate values, in particular embodiments the adjustments of such numerical values are as precise as possible within the allowable range.

For each patent, patent application, patent application publication, or other material cited in this disclosure, such as articles, books, specifications, publications, documents, and the like, their entire contents are incorporated herein by reference. Historical documents that are inconsistent with or inconsistent with the contents of this disclosure are excluded, and documents that limit the broadest scope of the claims of this disclosure (now or later appended to this disclosure) are also excluded. It should be noted that in the event of any inconsistency or conflict between the description, definition and/or use of terms in the appended materials of this disclosure and the contents presented in the description of this disclosure, the description, definition and/or use of terms in this disclosure shall control.

Finally, it should be understood that the embodiments described in the present disclosure are merely illustrative of the principles of the embodiments of the present disclosure. Other modifications that may be used may be within the scope of this disclosure. Thus, by way of example, and not limitation, alternative configurations of embodiments of the present disclosure may be used in accordance with the teachings presented herein. Accordingly, the embodiments of the present disclosure are not limited to the embodiments expressly presented and described in the present disclosure.

Claims (15)

1. A device for outputting audio signals, containing: a bone conduction unit configured to generate an acoustic bone conduction wave; an air conduction unit configured to generate an air conduction acoustic wave, wherein the air conduction unit includes one or more vibrating diaphragms physically coupled to at least one of the bone conduction unit or housing, wherein the air conduction acoustic wave is generated based on said one or more vibration diaphragms and vibration of said at least one of the bone conduction unit or housing, the bone conduction acoustic wave and the air conduction acoustic wave represent the same sound signal, and the phase difference between the bone conduction acoustic wave and the air conduction acoustic wave is less threshold value; And a housing configured to accommodate at least a portion of a bone conduction unit and an air conduction unit, wherein at least one of said one or more vibrating diaphragms includes a main portion physically connected to the bone conduction node, the main portion including a base plate and a side wall defining a subspace for accommodating at least a portion of the bone conduction node; and an auxiliary portion physically connected to the housing; or at least one of said one or more vibrating diaphragms includes an annular structure, an inner wall of the vibrating diaphragm surrounds a bone conduction unit, and an outer wall of the vibrating diaphragm is physically connected to the housing. 2. The device of claim 1, wherein the housing includes a space in which at least one of said one or more vibration diaphragms is located, the space including a first cavity and a second cavity formed by said at least one of said one or more vibrating diaphragms, a first housing portion around the first cavity is physically connected to the bone conduction unit and configured to transmit vibration to the bone conduction unit, and an air conduction acoustic wave is output from the second cavity. 3. The device of claim 2, wherein the second housing portion around the second cavity is configured with one or more first openings in communication with the second cavity, and an air conduction wave is discharged from the first openings through said one or more first openings. 4. The device according to claim 3, wherein the first portion of the housing is configured with one or more second openings communicating with the first cavity, and said one or more second openings are configured to adjust the air pressure in the first cavity. 5. The apparatus of claim 4, wherein said one or more first openings are provided on a first side wall of the housing, said one or more second openings are provided on a second side wall of the housing, and the first side wall is substantially parallel to the second side wall. 6. The device of claim 5, wherein the housing is configured with one or more third openings communicating with at least one of the first cavity or the second cavity. 7. The device according to any one of claims 2 to 6, wherein at least one of said one or more vibrating diaphragms is located between the lower surface of the bone conduction unit and the lower surface of the housing. 8. The device according to any one of claims 2 to 7, wherein said one or more vibration diaphragms include a first vibration diaphragm physically coupled to the bone conduction unit and a second vibration diaphragm physically coupled to the housing. 9. The device of claim 8, wherein the resonant frequency of the lower surface of the housing is less than a threshold value when the user is wearing the device, the lower surface being located against a side wall of the housing that is in contact with the user. 10. The device according to claim 1, wherein the air conduction unit includes a vibration diaphragm and a vibration transmission unit, the vibration transmission unit is physically connected to the bone conduction unit and the vibration diaphragm, and the vibration transmission unit is configured to transmit vibration of the bone conduction unit to the vibration diaphragm to generate an air-conducted acoustic wave.