Active noise cancelling wireless Bluetooth headphones and hearing devices

Abstract

The present invention discloses an active noise reduction wireless Bluetooth headset, comprising: a shell assembly, a main and auxiliary magnet groups, a light sensing detection in-ear device, a speaker unit, a PCB board, a main and auxiliary magnetic conductive sheet group, a bracket and a tuning net, wherein the main and auxiliary magnet groups, the main and auxiliary magnetic conductive sheet group, the PCB board bracket and the bracket are sequentially stacked in the shell assembly, and the tuning net is arranged on the outer surface above the shell assembly; the periphery of the PCB board is exposed outside the shell assembly, the speaker unit is embedded in a part of the PCB board exposed to the outside and is electrically connected to the PCB board, and the light sensing detection in-ear device is embedded in another part of the bracket exposed to the outside and is electrically connected to the PCB board. In addition, the present invention also discloses a hearing device. The production cost of the existing noise reduction headset is reduced, so that it can be popularized on a large scale.

Description

Technical Field

[0001] The present invention belongs to the technical field of product manufacturing, and in particular relates to an active noise reduction wireless Bluetooth headset and a hearing device. Background Art

[0002] Active noise reduction headphones collect external environmental noise through the noise reduction microphone in the headphone line control or in the headphone, and after passing through the relevant circuit and main control (Bluetooth chip), the system can transform an inverted sound wave and add it to the speaker end. The final sound heard by the human ear is: environmental noise and inverted environmental noise. The two noises are superimposed to achieve sensory noise reduction. However, the existing noise reduction headphones have high production costs and cannot be widely popularized. There is no way to solve the problem;

[0003] How to reduce the production cost of existing noise-cancelling headphones so that they can be popularized on a large scale needs to be solved urgently. Summary of the invention

[0004] The main purpose of the embodiment of the present invention is to provide an active noise-cancelling wireless Bluetooth headset, aiming to reduce the production cost of existing noise-cancelling headsets so that they can be popularized on a large scale.

[0005] In order to achieve the above-mentioned purpose, an active noise reduction wireless Bluetooth headset is provided, comprising: a shell assembly, a main and auxiliary magnet groups, a light sensing in-ear device, a speaker unit, a PCB board, a main and auxiliary magnetic guide sheet group, a bracket and a tuning net, wherein the main and auxiliary magnet groups, the main and auxiliary magnetic guide sheet groups, the PCB board bracket and the bracket are sequentially stacked in the shell assembly, and the tuning net is arranged on the upper outer surface of the shell assembly;

[0006] The periphery of the PCB board is exposed outside the shell assembly, the speaker unit is embedded in a portion of the PCB board exposed outside and is electrically connected to the PCB board, and the light sensing in-ear device is embedded in another portion of the bracket exposed outside and is electrically connected to the PCB board.

[0007] Preferably, the shell assembly includes a U ferromagnetic cover and a vibration protection bottom cover, the outer diameter of the U ferromagnetic cover is adapted to the inner diameter of the vibration protection bottom cover, the lower end of the U ferromagnetic cover is connected to one end of the bracket to form a first cavity, and the upper end of the vibration protection bottom cover is connected to the other end of the bracket to form a second cavity.

[0008] Preferably, the main and auxiliary magnet groups include: a main magnet ring, an auxiliary magnet ring and a vibrating voice coil, one end of the main magnet ring is located in the first cavity, the other end of the main magnet ring is located in the second cavity, the vibrating voice coil is sleeved on the main magnet ring and is located in the first cavity, and the auxiliary magnet is enclosed on the vibrating voice coil and is located in the first cavity.

[0009] Preferably, the main and secondary magnetic conductive sheet groups include: a main magnetic sheet, a vibration plate and a secondary magnetic conductive sheet, the vibration plate is arranged between the bracket and the vibration protection bottom cover bracket, the main magnetic sheet is arranged on the vibration plate, and the secondary magnetic conductive sheet is enclosed on the main magnetic sheet and is at the same horizontal height as the PCB board.

[0010] Preferably, the active noise reduction wireless Bluetooth headset also includes: a FB microphone component, the FB microphone component includes a somatosensory integrated circuit board and a FB microphone head, the FB microphone head is arranged on the outer surface of the lower end of the vibration protection bottom cover, the somatosensory integrated circuit board is arranged on the outer surface of the lower end of the vibration protection bottom cover, one end of the somatosensory integrated circuit board is connected to the FB microphone head, and the other end of the somatosensory integrated circuit is connected to the PCB board or to the speaker unit.

[0011] Preferably, the somatosensory integrated circuit board is a flexible board.

[0012] Preferably, the axes of the U ferromagnetic cover, the vibration protection bottom cover, the main magnet ring, the auxiliary magnet ring, the vibration voice coil, the main magnetic sheet, the vibration plate and the auxiliary magnetic sheet are on the same vertical line.

[0013] Preferably, the speaker unit includes: a feed-back noise reduction microphone, a light detection circuit and a speaker, and the feed-back noise reduction microphone, the light detection circuit and the speaker are integrated and arranged on the exposed portion of the PCB board.

[0014] Preferably, the overall height of the active noise reduction wireless Bluetooth headset is 2.8 to 4.5 mm, and the maximum diameter is 8 to 15 mm.

[0015] In addition, the present application also discloses an active noise reduction wireless Bluetooth headset, comprising: a shell assembly, a main magnet, a light sensing in-ear device, a speaker unit, a PCB board, a magnetic conductive sheet, a bracket, and a tuning net, wherein the main and auxiliary magnet groups, the main and auxiliary magnetic conductive sheet groups, the PCB board bracket, and the bracket are sequentially stacked in the shell assembly, and the tuning net is arranged on the upper outer surface of the shell assembly;

[0016] The periphery of the PCB board is exposed outside the shell assembly, the speaker unit is embedded in a portion of the PCB board exposed outside and is electrically connected to the PCB board, and the light sensing in-ear device is embedded in another portion of the bracket exposed outside and is electrically connected to the PCB board.

[0017] In addition, the present application also discloses a hearing device, comprising any of the above-mentioned active noise reduction wireless Bluetooth headphones.

[0018] An active noise reduction wireless Bluetooth headset provided by an embodiment of the present invention comprises: a housing component, a primary and secondary magnet group, a light sensing detection in-ear device, a speaker unit, a PCB board, a primary and secondary magnetic guide sheet group, a bracket and a tuning net, wherein the primary and secondary magnet group, the primary and secondary magnetic guide sheet group, the PCB board bracket and the bracket are sequentially stacked and arranged in the housing component, and the tuning net is arranged on the upper outer surface of the housing component; the periphery of the PCB board is exposed outside the housing component, the speaker unit is embedded in a part of the PCB board exposed outside and is electrically connected to the PCB board, and the light sensing detection in-ear device is embedded in another part of the bracket exposed outside and is electrically connected to the PCB board. The production cost of the existing noise reduction headset is reduced, so that it can be widely popularized. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the structure of an active noise reduction wireless Bluetooth headset according to an embodiment of the present invention;

[0020] Figure 2 This is an exploded view of an active noise reduction wireless Bluetooth headset according to an embodiment of the present invention;

[0021] Figure 3 This is a front view of an active noise reduction wireless Bluetooth headset according to an embodiment of the present invention;

[0022] Figure 4 This is a rear view of the active noise reduction wireless Bluetooth headset according to an embodiment of the present invention.

[0023] Description of Figure Numbers:

[0024]

[0025] DETAILED DESCRIPTION

[0026] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0027] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention. It should be noted that all directional indications in the embodiments of the present invention (such as up, down, left, right, front, back...) are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the drawings). If the specific posture changes, the directional indication will also change accordingly.

[0028] In addition, the descriptions of "first", "second", etc. in the present invention are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in the field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0029] like Figure 1-4 As shown, Figure 1 This is a schematic diagram of the structure of an active noise reduction wireless Bluetooth headset according to an embodiment of the present invention; Figure 2 This is an exploded view of an active noise reduction wireless Bluetooth headset according to an embodiment of the present invention; Figure 3 This is a front view of an active noise reduction wireless Bluetooth headset according to an embodiment of the present invention; Figure 4 This is a rear view of an active noise reduction wireless Bluetooth headset according to an embodiment of the present invention. In this embodiment, an active noise reduction wireless Bluetooth headset is provided, comprising: a housing assembly 10, a primary and secondary magnet group 11, a light sensing in-ear device 12, a speaker unit 13, a PCB board 14, secondary magnetic conductive sheets 153, a primary and secondary magnetic conductive sheets 153 group 15, a bracket 16, and a tuning net 17. The primary and secondary magnet group 11, the secondary magnetic conductive sheets 153, the primary and secondary magnetic conductive sheets 153 group 15, the PCB board 14, the bracket 16, and the bracket 16 are sequentially stacked in the housing assembly 10, and the tuning net 17 is arranged on the upper outer surface of the housing assembly 10;

[0030] The periphery of the PCB board 14 is exposed outside the housing assembly 10 , the speaker unit 13 is embedded in a portion of the PCB board 14 exposed outside and is electrically connected to the PCB board 14 , and the light sensing in-ear device 12 is embedded in another portion of the bracket 16 exposed outside and is electrically connected to the PCB board 14 .

[0031] It should be noted that the existing active noise reduction headphones all need to be re-molded, which increases the production cost of the noise reduction headphones and cannot be widely popularized; in the present application, the main and auxiliary magnet groups 11, the auxiliary magnetic conductive sheet 153, the main and auxiliary magnetic conductive sheet 153 group 15, the PCB board 14 bracket 16, and the bracket 16 are sequentially stacked in the shell component 10, and the tuning net 17 is arranged on the outer surface of the shell component 10. The earphone part belongs to the existing ordinary Bluetooth headset or neck-hanging headset; by arranging a speaker on the existing ordinary Bluetooth headset or neck-hanging headset The unit 13 and the light sensing detection in-ear device 12 can convert the existing ordinary Bluetooth headset neck-hanging headset into a noise reduction headset. Secondly, the current headset manufacturers want to make TWS+ANC noise reduction wireless Bluetooth headsets and neck-hanging noise reduction wireless Bluetooth headsets, and will open a set of headset front cavity molds for one ID. The appearance (ID) and internal structure of the cavity of TWS+ANC noise reduction wireless Bluetooth headsets and neck-hanging noise reduction wireless Bluetooth headsets on the market are different, which requires headset manufacturers to invest a lot of manpower, material resources, and financial resources in research and development, and may not achieve the desired effect. Even if the engineering prototype verification is no problem, the subsequent control of noise reduction stability and consistency from trial production (PP) to mass production (MP) is a painful process for headset manufacturers and solution providers; therefore, by embedding the speaker unit 13 on the exposed part of the PCB board 14 and electrically connecting it to the PCB board 14, the light sensing detection in-ear device 12 is embedded on the other exposed part of the bracket 16 and electrically connected to the PCB board 14, it is possible to convert ordinary headphones into noise reduction headphones without the above problems.

[0032] In addition, it should be noted that the setting of the tuning net 17 can adjust the sound effect according to the environmental conditions around the earphone, embodying a humanized design and meeting user needs. The bracket 16 can fix the main and auxiliary magnet groups 11 and the auxiliary magnetic conductive sheet 153 and the main and auxiliary magnetic conductive sheet 153 group 15 so that they will not move during long-term use. The optical in-ear detector is set on the PCB board 14 through the optical in-ear detection seat.

[0033] In this embodiment, an active noise reduction wireless Bluetooth headset is provided, comprising: a housing component 10, a main and auxiliary magnet group 11, a light sensing in-ear device 12, a speaker unit 13, a PCB board 14, an auxiliary magnetic conductive sheet 153, a main and auxiliary magnetic conductive sheet 153 group 15, a bracket 16 and a tuning net 17, wherein the main and auxiliary magnet group 11, the auxiliary magnetic conductive sheet 153, the main and auxiliary magnetic conductive sheet 153 group 15, the PCB board 14 bracket 16, and the bracket 16 are sequentially stacked in the housing component 10, and the tuning net 17 is arranged on the upper outer surface of the housing component 10;

[0034] The outer periphery of the PCB board 14 is exposed outside the housing assembly 10, the speaker unit 13 is embedded in a portion of the PCB board 14 that is exposed outside and is electrically connected to the PCB board 14, and the light sensing in-ear device 12 is embedded in another portion of the bracket 16 that is exposed outside and is electrically connected to the PCB board 14. The production cost of the existing noise reduction headphones is reduced, so that they can be widely popularized.

[0035] Furthermore, the shell assembly 10 includes a U ferromagnetic cover 101 and a vibration protection bottom cover 102, the outer diameter of the U ferromagnetic cover 101 is adapted to the inner diameter of the vibration protection bottom cover 102, the lower end of the U ferromagnetic cover 101 is connected to one end of the bracket 16 to form a first cavity, and the upper end of the vibration protection bottom cover 102 is connected to the other end of the bracket 16 to form a second cavity.

[0036] It should be noted that the outer diameter of the U ferromagnetic cover 101 is adapted to the inner diameter of the vibration protection bottom cover 102, the lower end of the U ferromagnetic cover 101 is connected to one end of the bracket 16 to form a first cavity, and the upper end of the vibration protection bottom cover 102 is connected to the other end of the bracket 16 to form a second cavity. The generation of the first cavity and the second cavity can prevent other external noise from entering and mixing with the sound played on the speaker unit 13, resulting in unsatisfactory noise reduction effect.

[0037] Furthermore, the main and auxiliary magnet groups 11 include: a main magnet circle 111, an auxiliary magnet circle 112 and a vibrating voice coil 113, one end of the main magnet circle 111 is located in the first cavity, and the other end of the main magnet circle 111 is located in the second cavity, the vibrating voice coil 113 is sleeved on the main magnet circle 111 and is located in the first cavity, and the auxiliary magnet is enclosed on the vibrating voice coil 113 and is located in the first cavity.

[0038] It should be noted that one end of the main magnet ring 111 is located in the first cavity, the other end of the main magnet ring 111 is located in the second cavity, the vibration voice coil 113 is sleeved on the main magnet ring 111 and is located in the first cavity, and the auxiliary magnet is enclosed on the vibration voice coil 113 and is located in the first cavity. This arrangement can make the sound quality of the earphone better. The main magnet ring 111 and the auxiliary magnet ring 112 can increase the magnetic flux and increase the magnetic field density.

[0039] Furthermore, the secondary magnetic conductive sheet 153 and the main and secondary magnetic conductive sheet 153 group 15 include: a main magnetic conductive sheet 151, a vibration plate 152 and a secondary magnetic conductive sheet 153, the vibration plate 152 is arranged between the bracket 16 and the vibration protection bottom cover 102 bracket 16, the main magnetic conductive sheet 151 is arranged on the vibration plate 152, and the secondary magnetic conductive sheet 153 is enclosed on the main magnetic conductive sheet 151 and is at the same horizontal height as the PCB board 14.

[0040] It should be noted that the battery capacity of TWS+ANC noise reduction wireless Bluetooth headsets and neck-hanging noise reduction wireless Bluetooth headsets on the market is relatively small, so they cannot achieve long-term battery life; in the process of producing TWS+ANC noise reduction wireless Bluetooth headsets and neck-hanging noise reduction wireless Bluetooth headsets, headset manufacturers reduce the sound quality and sound effects of TWS+ANC noise reduction wireless Bluetooth headsets and neck-hanging noise reduction wireless Bluetooth headsets in order to achieve the noise reduction effect. ANC (feedback active noise reduction) and Hybrid ANC (hybrid active noise reduction) have problems such as high difficulty in mass production, low pass rate and low production capacity. The main magnetic sheet 151 and the secondary magnetic sheet 153 can prevent the magnetic field from leaking out and affecting the sound quality. The vibration protection bottom cover 102 can prevent the vibration plate 152 from touching other foreign objects to produce abnormal sounds.

[0041] Furthermore, the active noise reduction wireless Bluetooth headset also includes: a FB microphone component 18, the FB microphone component 18 includes a somatosensory integrated circuit board and a FB microphone head 181, the FB microphone head 181 is arranged on the outer surface of the lower end of the vibration protection bottom cover 102, the somatosensory integrated circuit board 181 is arranged on the outer surface of the lower end of the vibration protection bottom cover 102, one end of the somatosensory integrated circuit board 181 is connected to the FB microphone head 181, and the other end of the somatosensory integrated circuit is connected to the PCB board 14 or to the speaker unit.

[0042] It should be noted that one end of the somatosensory integrated circuit board 181 is connected to the FB microphone 181, and the other end of the somatosensory integrated circuit is connected to the PCB board 14 or the speaker unit, which can achieve deep noise reduction and can perform deep noise reduction on some interfering and confusing sounds.

[0043] Furthermore, the somatosensory integrated circuit board 181 is a flexible board.

[0044] It should be noted that the provision of a flexible circuit board can reduce the space occupied by the entire active noise-cancelling Bluetooth headset and reduce the production and processing costs of the active noise-cancelling Bluetooth headset.

[0045] Furthermore, the axes of the U ferromagnetic cover 101, the vibration protection bottom cover 102, the main magnet ring 111, the auxiliary magnet ring 112, the vibration voice coil 113, the main magnetic sheet 151, the vibration plate 152 and the auxiliary magnetic sheet 153 are on the same vertical line.

[0046] It should be noted that the axes of the U ferromagnetic cover 101, the vibration protection bottom cover 102, the main magnet circle 111, the auxiliary magnet circle 112, the vibrating voice coil 113, the main magnetic sheet 151, the vibration plate 152 and the auxiliary magnetic sheet 153 are on the same vertical line, which can ensure that the components of the active noise reduction headphones applied for are vibrated at the same frequency and continuous vibration will not affect the positional relationship of the components, and no sound distortion will occur during long-term use.

[0047] Furthermore, the speaker unit 13 includes: a feed-back noise reduction microphone, a light sensing detection circuit and a speaker, and the feed-back noise reduction microphone, the light sensing detection circuit and the speaker are integrated and arranged on the exposed portion of the PCB board 14.

[0048] It should be noted that the light sensing circuit, the backfeed noise reduction microphone and the speaker are integrated into one piece, which can convert ordinary headphones into noise reduction headphones;

[0049] According to the pre-set requirements, the light sensing circuit takes effect when needed and does not take effect when not needed. During production operations, the TWS Bluetooth headset + ANC noise reduction wireless Bluetooth headset speaker unit 13 and the neck-hanging noise reduction wireless Bluetooth headset speaker unit 13 are connected to the headset mainboard only through the FPC (flexible circuit board) wiring method, which improves production efficiency and stability.

[0050] Furthermore, the overall height of the active noise reduction wireless Bluetooth headset is 2.8 to 4.5 mm, and the maximum diameter is 8 to 15 mm.

[0051] It should be noted that the overall height of the active noise-cancelling wireless Bluetooth headset of the present application is set to: 2.8~4.5mm, and the maximum diameter is set to 8~15mm, which can enable the active noise-cancelling headset of the present application to meet the usage needs of existing consumers.

[0052] In addition, the present application also discloses an active noise reduction wireless Bluetooth headset, comprising: a shell assembly, a main magnet, a light sensing in-ear device, a speaker unit, a PCB board, a magnetic conductive sheet, a bracket, and a tuning net, wherein the main and auxiliary magnet groups, the main and auxiliary magnetic conductive sheet groups, the PCB board bracket, and the bracket are sequentially stacked in the shell assembly, and the tuning net is arranged on the upper outer surface of the shell assembly;

[0053] The periphery of the PCB board is exposed outside the shell assembly, the speaker unit is embedded in a portion of the PCB board exposed outside and is electrically connected to the PCB board, and the light sensing in-ear device is embedded in another portion of the bracket exposed outside and is electrically connected to the PCB board.

[0054] It should be noted that the magnetic conductive sheet in the present application includes a main magnetic sheet or a secondary magnetic conductive sheet. A single main magnetic sheet or a single secondary magnetic conductive sheet combined with a shell assembly, a light sensing detection in-ear device, a speaker unit, a PCB board, a magnetic conductive sheet, a bracket and a tuning network can achieve: reducing the production cost of existing noise-cancelling headphones, thereby enabling large-scale popularization.

[0055] In addition, the present application also discloses a hearing device, comprising any of the above-mentioned active noise reduction wireless Bluetooth headphones.

[0056] It is also necessary to add that the noise reduction method of the active noise reduction headset of this embodiment includes: receiving a configuration instruction, the configuration instruction is used to instruct the noise reduction headset to start the noise reduction configuration; according to the configuration instruction, reading and testing the noise reduction performance of multiple groups of noise reduction filter parameters, generating multiple groups of test results corresponding to different noise reduction filter parameters, and the multiple groups of noise reduction filter parameters are pre-stored in the noise reduction headset; according to the multiple groups of test results, selecting the noise reduction filter parameters with the best noise reduction performance as the active noise reduction parameters of the noise reduction headset. In specific implementation, the configuration instruction can be a command signal input by an external device, or it can be a command signal generated by the headset itself through the user's operation on the noise reduction headset. The noise reduction headset is wirelessly connected to an external smart terminal through wireless methods such as Bluetooth and low-power Bluetooth, and the smart terminal has an APP module for controlling the noise reduction headset. The user controls the APP by voice or touch, for example: turning on the active noise reduction configuration function in the APP, that is, sending a noise reduction configuration instruction to the noise reduction headset end, instructing the noise reduction headset to start the noise reduction configuration. In one implementation, the smart terminal first sends the configuration instruction to one of the earphones, such as the left earphone or the right earphone, and then the left earphone forwards the configuration instruction or the parameters belonging to the right earphone to the right earphone, and the time of the transmission from the left earphone to the right earphone can be ignored.

[0057] In other embodiments, a button or a combination of buttons may be set on the left and right earphones or a single earphone of the noise reduction earphone to start the noise reduction configuration function of the noise reduction earphone and perform performance measurement of the noise reduction filter parameters. Taking the button on the left earphone as an example, pressing the button of the left earphone not only starts the noise reduction measurement of the left earphone, but also sends a start command to the right earphone through a wireless connection. After the right earphone receives the start command, the noise reduction measurement of the right earphone is started.

[0058] In an embodiment of the present invention, multiple groups of noise reduction filter parameters are pre-stored in the memory of the noise reduction headphone chip. In one embodiment, these parameters can be written into the memory and cannot be modified when leaving the factory. In another embodiment, these parameters can also be rewritten or modified by the control of the smart terminal APP, for example, rewritten when the firmware is upgraded, so that the noise reduction configuration is more flexible. After the noise reduction configuration is started through the steps, the multiple groups of noise reduction filter parameters are read and the noise reduction performance of each group of noise reduction filter parameters is tested.

[0059] In some embodiments, reading multiple groups of noise reduction filter parameters may include testing the noise reduction performance of each group of noise reduction filter parameters in sequence according to a set reading order and a set time interval. In one embodiment, each group of noise reduction filter parameters can be read in sequence for testing according to the storage address of the noise reduction filter parameters; in another embodiment, each group of noise reduction filter parameters corresponds to an index value, such as 1, 2, ..., N, or each group of noise reduction filter parameters can be read in sequence in the order of the index values. The present invention is not limited to the above two reading methods, as long as each group of parameters can be read in sequence to obtain the corresponding test results. In this embodiment, the noise reduction filter parameters can be read and tested according to a set time interval, for example, the time interval is set to 100ms~3s. It should be noted that the time interval between each parameter reading and measurement should not be too long to reduce the impact of environmental noise changes on the measurement results.

[0060] In this embodiment, the measurement results of the noise reduction filter parameters can be measured by measuring the in-ear noise collected by the feedback path microphone (FBMIC). The noise reduction headphones measure the in-ear noise collected by the FB MIC corresponding to each set of noise reduction filter parameters in sequence according to the set reading order and time interval (for example, 500ms). In addition, in order to cope with the randomness of the noise, related to the current environment, the in-ear noise collected by the FB MIC corresponding to multiple groups of different noise reduction filter parameters can be measured in sequence multiple times, and the multiple noise signals collected corresponding to each group of noise reduction filter parameters can be fused, such as energy averaging and median filtering of the noise energy. The advantage of the sequential measurement adopted in this embodiment is that the time interval between different measurements of the same set of noise reduction filter parameters is longer, the correlation of environmental noise is weakened, and the impact of environmental noise changes on the measurement results can be reduced.

[0061] In the embodiment of the present invention, for example, N groups of noise reduction filter parameters are measured once for N groups first, and then for N groups again, and a total of M rounds of measurements can be performed, and then the M test results corresponding to each group of noise reduction filter parameters are averaged. This is because the noise energy and the amount of noise reduction are affected by the ambient sound outside the ear, and the ambient sound outside the ear is often changing. If N groups are measured once, each group takes a shorter time, and the ambient sound outside the ear changes less, the noise energy and noise reduction measured by different groups are less affected by the change of ambient sound, and repeated measurements for M rounds make the test results more accurate.

[0062] In some embodiments, the evaluation of noise reduction performance depends not only on the in-ear noise collected by the feedback path microphone (FB MIC) corresponding to each set of noise reduction filter parameters, but also on the external noise collected by the feedforward path microphone (FF MIC) corresponding to each set of noise reduction filter parameters. For example, the ratio of the external noise collected by the FF MIC to the internal noise collected by the FB MIC can also be used as the test result of the noise reduction filter parameters. When the ratio of the external noise collected by the FF MIC to the internal noise collected by the FB MIC is selected as the test result, the noise reduction filter parameter with the largest ratio is selected as the active noise reduction parameter of the noise reduction headset.

[0063] In some embodiments, the ear noise / external ear noise collected by FB MIC and FF MIC can be filtered first. The filtering can include a high-pass filter with a cutoff frequency of, for example, 20Hz, 50Hz, 100Hz; or a low-pass filter with a cutoff frequency of, for example, 500Hz, 1KHz, 2KHz. After filtering, the noise energy is calculated. The setting of the high-pass filter and the low-pass filter needs to consider the noise reduction bandwidth of the FF channel, while taking into account the possible amplification effect of the noise signal outside the noise reduction bandwidth of the FF channel.

[0064] In some embodiments, the ear noise / external noise collected by FB MIC and FF MIC can also be weighted for different frequency points in the frequency domain. A relatively large weight can be used within the noise reduction bandwidth of the FF channel, and a small or zero weight can be used for frequencies that are susceptible to interference. For example, for low frequencies (below 50 Hz), a small or zero weight is used. In addition, the different sensitivities of the human ear to different frequencies can be used to weight different frequencies using the frequency sensitivity curve of the human ear.

[0065] In an embodiment of the present invention, the noise reduction filter parameters are noise reduction filter parameters of the feedforward path. The wearing method of the user includes the tightness of the earphone, the slight change of the orientation of the earphone relative to the ear canal, etc. Because the noise reduction filter parameters of the feedforward channel are relatively sensitive to the noise reduction effect for different wearers and different wearing methods, such as the tightness of wearing and whether the wearing is standardized. The noise reduction filter parameters of the feedback channel are relatively insensitive to the noise reduction effect for different wearers and different wearing methods. Therefore, generally speaking, the configuration of the noise reduction filter parameters is for the noise reduction filter parameters of the feedforward channel, and this is also the case in the present invention. However, the present invention is not limited to this, and the configuration method of the noise reduction parameters is also applicable to the setting of the noise reduction filter parameters of the feedback channel. When configuring the noise reduction filter parameters of the feedforward channel and testing the noise reduction effect, in some embodiments, the noise reduction channel of the feedback channel can be opened for normal operation; in other embodiments, the noise reduction channel of the feedback channel can be closed. At this time, only the noise reduction effect of the feedforward channel is tested, and the influence of different noise reduction filter parameters of the feedforward channel on the noise reduction effect can be more clearly obtained.

[0066] In the embodiment of the present invention, a soft switching method is used in switching between different noise reduction filter parameters, so that the noise reduction filter coefficients are smoothly switched from one group to another, so that the user will not feel the sudden change of noise and the harsh noise such as popping and banging.

[0067] When the user configures the parameters of the noise reduction headphones according to the method described in the above embodiment, first wear the left and right wireless headphones, configure multiple sets of different noise reduction filter parameters in each of the left and right headphones, and the FB MIC collects the noise in the ear. The user starts the noise reduction configuration function of the noise reduction headphones by issuing a configuration instruction through the smart terminal APP or manually turning on the button on the headphones. At this time, the left and right headphones read the multiple sets of noise reduction filter parameters currently stored in sequence multiple times and measure the noise in the ear collected by the FF MIC under each set of noise reduction filter parameters, and select the noise reduction filter parameters corresponding to the minimum noise in the ear as the final active noise reduction parameters.

[0068] The noise reduction headphone parameter configuration method disclosed in this embodiment can automatically test and select the best noise reduction filter coefficient that matches the ambient noise at that time according to the actual use environment of the user and multiple sets of noise reduction filter parameters pre-stored in the headphone chip after the wireless headphone is assembled into a complete machine, so as to achieve the best active noise reduction effect and provide the user with a better use experience. In addition, the parameter configuration process is automatically completed by the headphone itself, reducing the testing cost of the headphone.

[0069] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art within the technical scope disclosed by the present invention should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims

1. An active noise reduction wireless Bluetooth headset, characterized in that: include: A shell assembly, a primary and secondary magnet group, a light-sensing in-ear detector, a speaker unit, a PCB board, a primary and secondary magnetic guide sheet group, a bracket, and a tuning net, wherein the primary and secondary magnet group, the primary and secondary magnetic guide sheet group, the PCB board, and the bracket are sequentially stacked in the shell assembly, and the tuning net is arranged on the upper outer surface of the shell assembly; The periphery of the PCB board is exposed outside the housing assembly, the speaker unit is embedded in a portion of the PCB board that is exposed outside and is electrically connected to the PCB board, and the light sensing in-ear device is embedded in another portion of the bracket that is exposed outside and is electrically connected to the PCB board; The housing assembly includes a U ferromagnetic cover and a vibration protection bottom cover, the outer diameter of the U ferromagnetic cover is adapted to the inner diameter of the vibration protection bottom cover, the lower end of the U ferromagnetic cover is connected to one end of the bracket to form a first cavity, and the upper end of the vibration protection bottom cover is connected to the other end of the bracket to form a second cavity; The main and auxiliary magnet groups include: a main magnet ring, an auxiliary magnet ring and a vibration voice coil, one end of the main magnet ring is located in the first cavity, the other end of the main magnet ring is located in the second cavity, the vibration voice coil is sleeved on the main magnet ring and is located in the first cavity, and the auxiliary magnet is enclosed on the vibration voice coil and is located in the first cavity; The primary and secondary magnetic conductive sheet group comprises: a primary magnetic sheet, a vibration plate and a secondary magnetic conductive sheet, wherein the vibration plate is arranged between the bracket and the vibration protection bottom cover bracket, the primary magnetic sheet is arranged on the vibration plate, and the secondary magnetic conductive sheet is enclosed on the primary magnetic sheet and is at the same level as the PCB board; The speaker unit comprises: a backfeed noise reduction microphone, a light sensing detection circuit and a speaker, wherein the backfeed noise reduction microphone, the light sensing detection circuit and the speaker are integrated and arranged on the exposed portion of the PCB board; The active noise reduction wireless Bluetooth headset also includes: an FB microphone component, the FB microphone component includes a somatosensory integrated circuit board and a FB microphone head, the FB microphone head is arranged on the outer surface of the lower end of the vibration protection bottom cover, the somatosensory integrated circuit board is arranged on the outer surface of the lower end of the vibration protection bottom cover, one end of the somatosensory integrated circuit board is connected to the FB microphone head, and the other end of the somatosensory integrated circuit is connected to the PCB board or the speaker unit; The somatosensory integrated circuit board is a flexible board.

2. The active noise reduction wireless Bluetooth headset according to claim 1, characterized in that: The axes of the U ferromagnetic cover, the vibration protection bottom cover, the main magnet circle, the auxiliary magnet circle, the vibration voice coil, the main magnetic sheet, the vibration plate and the auxiliary magnetic sheet are on the same vertical line.

3. A hearing device, characterized in that: An active noise reduction wireless Bluetooth headset comprising any one of claims 1-2.

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