Adjustable sound pickup device and hearing aid using the same

Abstract

The present invention discloses an adjustable sound pickup device and a hearing aid device using the same. The sound pickup device includes an outer shell, a microphone shell, a microphone and a driving mechanism. The microphone is installed in the microphone shell, the outer shell is sleeved on the microphone shell, the driving mechanism is installed on the outer shell, a first sound transmission hole is opened on the outer shell, a second sound transmission hole is opened on the microphone shell, the second sound transmission hole cooperates with the first sound transmission hole, the microphone shell is movably installed on the outer shell through the driving mechanism, and under the drive of the driving mechanism, the microphone shell can move along the inner wall of the outer shell, so that the second sound transmission hole is completely connected, partially connected or completely staggered with the first sound transmission hole. When the microphone shell moves relative to the outer shell, the first sound transmission hole is completely connected, partially connected or completely staggered with the second sound transmission hole, so as to realize the control and adjustment of the sound flow that finally enters the microphone, thereby effectively controlling the sound flow entering the ear and improving the frequency response characteristics of the sound.

Description

Technical Field

[0001] The present invention relates to the field of hearing aids, and in particular to an adjustable sound pickup device and a hearing aid device using the same. Background Art

[0002] The sounds that humans are exposed to include speech, music, noise and other types of sounds, which have different frequency response characteristics and bandwidths. Human hearing can cause hearing loss due to various reasons, which in turn leads to a decline in the ability to perceive sound. Since hearing loss varies from person to person, the needs for perceiving sound are different, so the sound entering the ear needs to be regulated or modified to suit the individual's hearing status. At present, the degree of hearing loss can be determined through hearing tests, and hearing aids can be used to compensate for the lost hearing.

[0003] However, in most cases, hearing loss is not serious and does not reach the level of hearing impairment (i.e. deafness), such as hidden hearing loss. There are also most tinnitus patients and patients who visit the otolaryngology department on a daily basis. More and more of them visit the otolaryngology department for health care purposes or mild symptoms. The hearing of these groups is between normal and deafness, which can be called "incomplete hearing loss". The state of perception of different frequency sounds by patients with "incomplete hearing loss" is very complex. Some hearing needs to be compensated (increase the incoming volume), while some frequency bands need to attenuate the sound (reduce the incoming volume). This group of people is actually very large, and their hearing conditions already need intervention, but for them, ordinary hearing aids will make them very uncomfortable to use, and they are not willing to wear them at all. Another possibility is that ordinary hearing aids were originally developed for those deaf people, and their output parameters may not be applicable to people with "incomplete hearing loss". Studies have shown that long-term excessive sound stimulation can cause hearing damage. If this continues, this group of people will either be delayed in intervention or excessive in intervention, and the incidence of deaf people will eventually increase.

[0004] Why are current hearing aids not suitable for people with "incomplete hearing loss"? That's because the microphones that receive sound in current hearing aids are usually exposed to the environment, receiving sounds from all directions, and are connected or disconnected by various electronic switches to control the working state of the microphone on or off. Existing hearing aid products are a common "microphone (pickup) + speaker (loudspeaker)" sound transmission system. The output sound pressure (volume) of the speaker is controlled by the volume control knob. This method ultimately controls the volume or listening loudness by controlling the speaker. The "microphone + speaker" system of existing hearing aid products has been combined into a fixed supporting device by components of fixed models or performances. At this time, the microphone has only two states: on and off. This microphone cannot adjust the flow state of the sound, but can only control the output volume of the speaker to achieve volume adjustment. The output of the standard speaker is designed for the deaf, and even the smallest output sound intensity may exceed the needs of the "incomplete hearing loss" population. Summary of the invention

[0005] The present invention provides an adjustable sound pickup device, which can effectively control the sound flow entering the ear and improve the frequency response characteristics of the sound, providing an important way and method for improving the listening experience, protecting the hearing, and preventing hearing damage. It also provides a hearing aid device using the sound pickup device, which can at least solve one of the above problems.

[0006] To achieve the above-mentioned purpose, according to one aspect of the present invention, there is provided an adjustable sound pickup device, including an outer shell, a microphone shell, a microphone and a driving mechanism, the microphone is installed in the microphone shell, the outer shell is sleeved on the outer circumference of the microphone shell, the driving mechanism is installed on the outer shell, a first sound transmission hole is opened on the outer shell, a second sound transmission hole connected to the microphone is opened on the microphone shell, the second sound transmission hole cooperates with the first sound transmission hole, the microphone shell is movably installed on the outer shell by the driving mechanism, and under the drive of the driving mechanism, the microphone shell can move along the inner wall of the outer shell, so that the second sound transmission hole is completely connected, partially connected or completely staggered with the first sound transmission hole.

[0007] Therefore, when the microphone shell moves relative to the outer shell, the second sound hole of the microphone shell comes into contact with the first sound hole of the outer shell. Due to the different rotation angles or moving distances, the cross-sectional area at the connection between the first sound hole and the second sound hole changes, and ultimately the first sound hole and the second sound hole are completely connected, partially connected or completely staggered, thereby achieving control and regulation of the sound flow that ultimately enters the microphone, thereby effectively controlling the sound flow entering the ear and improving the frequency response characteristics of the sound, greatly improving the listening experience, and effectively protecting the hearing while preventing hearing damage.

[0008] In some embodiments, the number of the first sound transmission hole and the second sound transmission hole is at least one. Therefore, the number of the first sound transmission hole and the second sound transmission hole can be adjusted according to actual needs, for example: one first sound transmission hole corresponds to one second sound transmission hole; multiple first sound transmission holes correspond to one second sound transmission hole.

[0009] In some embodiments, there are multiple first sound transmission holes, and one end of the multiple first sound transmission holes close to the second sound transmission hole is opened along the movement direction of the microphone housing and is at the same height as the second sound transmission hole. Thus, the end of the first sound transmission hole close to the second sound transmission hole is opened along the movement direction of the microphone housing, so that the movement of the microphone housing can achieve the change of the cross-sectional area at the connection between the first sound transmission hole and the second sound transmission hole, so that the first sound transmission hole and the second sound transmission hole are completely connected, partially connected or completely staggered. Of course, the end of the first sound transmission hole away from the second sound transmission hole can be opened at a position at the same height as the second sound transmission hole on the outer surface of the shell, or it can be opened at any position on the outer surface of the shell, and it is at a different height or horizontal plane with the second sound transmission hole. When the end of the first sound transmission hole away from the second sound transmission hole is at a different height or horizontal plane with the second sound transmission hole, the length (or inclination) of each first sound transmission hole is different. If a plurality of first sound transmission holes of different lengths (or inclinations) are provided on the outer shell, the frequency response characteristics of the incoming sound can be changed by adjusting the second sound transmission holes on the microphone shell to connect with the first sound transmission holes of different lengths on the outer shell.

[0010] In some embodiments, the driving mechanism includes a transmission assembly, the transmission assembly is installed in the outer shell, and the microphone housing is installed above the transmission assembly. Therefore, the transmission assembly of the present invention can be a structure such as a turntable, a rotating shaft, a linear motor, a linear drive module, etc. By controlling the transmission assembly manually, electrically or automatically, the movement of the microphone housing can be realized, thereby realizing the change of the cross-sectional area at the connection between the first sound transmission hole and the second sound transmission hole.

[0011] In some embodiments, the driving mechanism further comprises a driving member, which is in power connection with the transmission assembly and is used to drive the transmission assembly to work. Thus, the arrangement of the driving member can realize electric or automatic driving of the transmission assembly, which is easy to operate.

[0012] In some embodiments, the driving mechanism also includes a bearing plate, the microphone housing is fixedly mounted on the bearing plate, the bearing plate is slidably mounted on the transmission assembly, the transmission assembly is a linear drive module, the linear drive module includes a linear guide, a slider, a nut and a screw, the linear guide is fixedly mounted on the outer shell and is located at the bottom of the microphone housing, the microphone housing is slidably mounted on the linear guide through the slider, the screw is mounted on the linear guide, the upper end of the nut is fixedly connected to the slider, the lower end is sleeved on the screw, and one end of the driving member is dynamically connected to the screw for driving the screw to rotate. The transmission assembly of the present invention is a linear drive module, and the driving member can be a servo motor, thereby achieving automatic control of the microphone housing, and then achieving automatic adjustment of the cross-sectional area at the interface, and finally making the sound transmission holes completely connected, partially the same or closed. At this time, the different cross-sectional areas of the inner and outer sound transmission holes can be used to automatically adjust the sound flow that finally enters the microphone.

[0013] In some embodiments, the transmission assembly is a turntable, the microphone housing is fixedly mounted above the turntable, the turntable is rotatably mounted on the outer housing, and the turntable is sleeved on the outer periphery of the driving end of the driving member. Thus, the transmission assembly is a turntable, and the relative movement of the microphone housing and the outer housing can be achieved by rotating the turntable, which is convenient for adjustment.

[0014] In some embodiments, an inner cavity matching the microphone housing is provided in the outer shell, the first sound transmission hole is connected from the outer wall of the outer shell to the inner cavity, the microphone housing is slidably mounted in the inner cavity, the microphone housing is a prism, a pyramid or a prism, at least two side surfaces of the microphone housing are in contact with the inner wall of the inner cavity, and at least one second sound transmission hole is provided on the side surface in contact with the inner wall of the inner cavity. Thus, the sound pickup device of the present invention can be set to a commonly used appearance according to actual needs to improve the aesthetics.

[0015] In some embodiments, an inner cavity matching the microphone housing is provided in the outer shell, the first sound transmission hole is connected from the outer wall of the outer shell to the inner cavity, the microphone housing is rotatably mounted in the inner cavity, the microphone housing is a cylinder, a cone, a truncated cone, or a sphere, the outer wall of the microphone housing fits the inner wall of the inner cavity, and at least one second sound transmission hole is provided on the outer wall of the microphone housing. Thus, the sound pickup device of the present invention can be set to a commonly used appearance according to actual needs to improve the aesthetics.

[0016] According to another aspect of the present invention, a hearing aid device is provided, comprising the above-mentioned adjustable sound pickup device, and also comprising headphones, wherein the headphones are connected to the sound pickup device, the sound pickup device also comprises a DSP chip and a controller, wherein the controller and the DSP chip are both installed inside an outer shell, the microphone is connected to the DSP chip, the DSP chip is connected to the controller, and the headphones are connected to the controller.

[0017] Therefore, the hearing aid device of the present invention applies the above-mentioned sound pickup device, and the sound enters the second sound transmission hole from the first sound transmission hole, and then is transmitted to the microphone, and then the signal is analyzed, compared and processed by the DSP chip and the controller to provide more complete information, and finally transmitted to the human ear through the earphone.

[0018] The hearing aid device of the present invention effectively solves various problems and defects caused by the fully exposed microphone of the existing popular hearing aids (behind-the-ear or ear canal). The fully exposed microphone collects all ambient sounds, and the DSP processing chip between the microphone and the speaker performs noise reduction, compression, maximum sound output control or peak clipping on the signal from the microphone, and then outputs it through the speaker (headphone). The problem currently encountered by this method is that the DSP chip processing effect cannot achieve the purpose of listening to language in a noisy environment. "Hearing but not clearly" is a common problem of all popular hearing aids.

[0019] The hearing aid device of the present invention is small in size. When in use, the entire sound pickup device can be hung in front of the chest, the first sound transmission hole is adjusted to point to the opposite side (face-to-face communication scenario), and then the cross-contact area between the second sound transmission hole and the first sound transmission hole of the microphone housing and the corresponding first sound transmission holes of different lengths are adjusted to achieve control of the flow rate and frequency response characteristics of the incoming sound. Since the microphone of the present invention is wrapped by the microphone housing and the outer shell, the wrapped microphone can effectively receive the sound from the direction pointed by the first sound transmission hole and reduce the sound from other directions. Therefore, the device can reduce the flow rate of the sound collected by the microphone in a noisy environment, increase the resonance peaks of some frequencies, increase the sensitivity of the pointed sound, and thus improve the listening effect in a noisy environment.

[0020] In some embodiments, the outer shell and the microphone shell both have a certain thickness and are made of high-density materials. Thus, the shell has a high density and good sound insulation, and the sounds collected in the shell are not easily transmitted to each other.

[0021] In some embodiments, a hole-shaped interface is provided at the bottom of the microphone housing, so that when the microphone is embedded in the microphone housing, the microphone can be connected to components such as a DSP chip and a power supply through the hole-shaped interface.

[0022] Beneficial effects of the present invention:

[0023] The microphone shell of the sound pickup device of the present invention is movable. When the microphone shell moves relative to the outer shell, the second sound transmission hole of the microphone shell comes into contact with the first sound transmission hole of the outer shell. Due to the different rotation angles or moving distances, the cross-sectional area at the connection between the first sound transmission hole and the second sound transmission hole changes, and finally the first sound transmission hole and the second sound transmission hole are completely connected, partially connected or completely staggered, thereby realizing the control and regulation of the sound flow that finally enters the microphone, thereby effectively controlling the sound flow entering the ear and improving the frequency response characteristics of the sound, greatly improving the listening experience, and can effectively protect the hearing and prevent hearing damage.

[0024] The hearing aid device of the present invention is small in size. When in use, the entire sound pickup device can be hung in front of the chest, the first sound transmission hole is adjusted to point to the opposite side (face-to-face communication scenario), and then the cross-contact area between the second sound transmission hole and the first sound transmission hole of the microphone housing and the corresponding first sound transmission holes of different lengths are adjusted to achieve control of the flow rate and frequency response characteristics of the incoming sound. Since the microphone of the present invention is wrapped by the microphone housing and the outer shell, the wrapped microphone can effectively receive the sound from the direction pointed by the first sound transmission hole and reduce the sound from other directions. Therefore, the device can reduce the flow rate of the sound collected by the microphone in a noisy environment, increase the resonance peaks of some frequencies, increase the sensitivity of the pointed sound, and thus improve the listening effect in a noisy environment. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a structural schematic diagram of the adjustable sound pickup device of Example 1;

[0026] Figure 2 for Figure 1 A schematic diagram of the structure of the microphone housing of the adjustable sound pickup device cooperating with the driving mechanism;

[0027] Figure 3 This is a schematic diagram of the control circuit structure of a hearing aid device according to one embodiment of the present invention;

[0028] Figure 4 It is a structural schematic diagram of an adjustable sound pickup device of Example 2;

[0029] Figure 5 is a schematic structural diagram of an adjustable sound pickup device of Example 3;

[0030] Figure 6 It is a structural schematic diagram of an adjustable sound pickup device of Example 4;

[0031] Figure 7 is a schematic structural diagram of an adjustable sound pickup device of Example 5;

[0032] Figure 8This is a schematic diagram of the structure of the adjustable sound pickup device of Example 6.

[0033] Figures 1 to 8 The figure marks in the figure are: 1-earphone; 2-sound pickup device; 11-Bluetooth receiving module; 20-power module; 21-outer shell; 22-microphone shell; 23-microphone; 24-driving mechanism; 25-DSP chip; 26-controller; 27-Bluetooth transmitting module; 28-D / A converter; 29-amplifier; 211-first sound transmission hole; 212-inner cavity; 221-second sound transmission hole; 222-hole-shaped interface; 241-transmission assembly; 242-carrying plate; 241a-linear guide rail; 241b-slider. DETAILED DESCRIPTION

[0034] The present invention will be further described in detail below in conjunction with the accompanying drawings.

[0035] Example 1

[0036] Figures 1 to 3 The adjustable sound pickup device of Embodiment 1 is schematically shown.

[0037] like Figures 1 to 3 As shown, the adjustable sound pickup device 2 includes an outer shell 21, a microphone shell 22, a microphone 23 and a driving mechanism 24. The microphone 23 is installed in the microphone shell 22, and the outer shell 21 is sleeved on the outer periphery of the microphone shell 22. The driving mechanism 24 is installed on the outer shell 21. A first sound transmission hole 211 is provided on the outer shell 21, and a second sound transmission hole 221 connected to the microphone 23 is provided on the microphone shell 22. The second sound transmission hole 221 of this embodiment can be connected to the microphone 23 through a serpentine or spiral sound pickup tube made of plastic or metal. Driven by the driving mechanism 24, the microphone shell 22 can move along the inner wall of the outer shell 21, so that the second sound transmission hole 221 is completely connected, partially connected or completely staggered with the first sound transmission hole 211.

[0038] The driving mechanism 24 includes a transmission assembly 241, which is installed in the outer shell 21, and the microphone shell 22 is installed above the transmission assembly 241. The transmission assembly 241 can be a turntable, a rotating shaft, a linear motor, a linear drive module and other structures. The microphone shell 22 is mounted on the rotating shaft, the linear motor or the linear drive module through a slider 241b, etc., and can also be directly fixed to the turntable. The specific structure of the transmission assembly 241 needs to be set according to the actual shape of the microphone shell and the outer shell 21. Therefore, by controlling the transmission assembly 241 manually, electrically or automatically, the movement of the microphone shell 22 can be realized, and then the change of the cross-sectional area at the connection between the first sound transmission hole 211 and the second sound transmission hole 221 can be realized.

[0039] This embodiment is described as an electric semi-automatic one: the driving mechanism 24 of this embodiment may also include a driving member and a supporting plate 242. The driving member is connected to the transmission assembly 241 for driving the transmission assembly 241 to work. The microphone housing 22 is fixedly mounted on the supporting plate 242, and the supporting plate 242 is slidably mounted on the transmission assembly 241. The transmission assembly 241 is a linear drive module. Figure 2 As shown, the linear drive module includes a linear guide 241a, a slider 241b, a nut and a screw. The linear guide 241a is fixedly mounted on the outer shell 21 and is located at the bottom of the microphone housing 22, and the microphone housing 22 is slidably mounted on the linear guide 241a through the slider 241b. Both ends of the screw are mounted on the linear guide 241a through bearings, etc., the upper end of the nut is fixedly connected to the slider 241b through fasteners such as screws, and the lower end is sleeved on the screw. One end of the driving member is connected to the screw power to drive the screw to rotate. The transmission assembly 241 of this embodiment is a linear drive module, and the driving member can be a servo motor, thereby, it is possible to realize automatic control of the microphone housing 22, and then realize automatic adjustment of the cross-sectional area at the interface, and finally make the sound transmission holes completely connected, partially the same or closed. At this time, the sound flow that finally enters the microphone 23 can be automatically adjusted by using the different cross-sectional areas of the inner and outer sound transmission holes.

[0040] An inner cavity 212 matching with the microphone housing 22 is provided in the outer shell 21, and a first sound transmission hole 211 is connected from the outer wall of the outer shell 21 to the inner cavity 212, and the microphone housing 22 can be slidably installed in the inner cavity 212. The microphone housing 22 is a prism, a pyramid or a prism. The microphone housing 22 and the outer shell 21 of this embodiment are both rectangular parallelepiped. The two side surfaces of the microphone housing 22 in the sliding direction are in contact with the inner wall of the inner cavity 212, and at least one second sound transmission hole 221 is provided on the side surface in contact with the inner wall of the inner cavity 212. Therefore, the sound pickup device 2 of the present invention can be set to a commonly used appearance according to actual needs to improve the aesthetics.

[0041] The number of the first sound transmission hole 211 and the second sound transmission hole 221 is at least one. Therefore, the number of the first sound transmission hole 211 and the second sound transmission hole 221 can be adjusted according to actual needs, for example: one first sound transmission hole 211 corresponds to one second sound transmission hole 221; multiple first sound transmission holes 211 correspond to one second sound transmission hole 221. In this embodiment, the number of the second sound transmission hole 221 on each side of the microphone housing 22 is one, and there is only one corresponding first sound transmission hole 211.

[0042] like Figure 1As shown, one end of the first sound hole 211 close to the second sound hole 221 is opened along the movement direction of the microphone housing 22 and is at the same height as the second sound hole 221. Therefore, the end of the first sound hole 211 close to the second sound hole 221 is opened along the movement direction of the microphone housing 22, so that the movement of the microphone housing 22 can achieve the change of the cross-sectional area at the connection between the first sound hole 211 and the second sound hole 221, so that the first sound hole 211 and the second sound hole 221 are completely connected, partially connected or completely staggered. The end of the first sound hole 211 away from the second sound hole 221 can be opened at the outer surface of the outer shell 21 at the same height as the second sound hole 221, or it can be opened at any position on the outer surface of the outer shell 21, and it is at a different height or horizontal plane from the second sound hole 221. The end of the first sound hole 211 of this embodiment away from the second sound hole 221 is at a different height from the second sound hole 221.

[0043] The outer housing 21 and the microphone housing 22 of this embodiment both have a certain thickness and can be made of high-density materials, such as high-density plastic, metal or wood, so that the housing has high density and good sound insulation, and the sound collected in the housing is not easily transmitted to each other.

[0044] The working principle of the sound pickup device 2 of this embodiment is:

[0045] When the microphone shell 22 moves relative to the outer shell 21 driven by the driving mechanism 24, the second sound hole 221 of the microphone shell 22 comes into contact with the first sound hole 211 of the outer shell 21. Due to the different moving distances, the cross-sectional area at the connection between the first sound hole 211 and the second sound hole 221 changes, and finally the first sound hole 211 and the second sound hole 221 are completely connected, partially connected or completely staggered, thereby realizing the control and regulation of the sound flow that finally enters the microphone 23, thereby effectively controlling the sound flow entering the ear and improving the frequency response characteristics of the sound, greatly improving the listening experience, and can effectively protect the hearing and prevent hearing damage.

[0046] According to another aspect of the present invention, a hearing aid device is provided, comprising the above-mentioned adjustable sound pickup device 2, and earphones 1, which are connected to the sound pickup device 2. The sound pickup device 2 also comprises a DSP chip 25 and a controller 26, the controller 26 and the DSP chip 25 are both installed inside the outer shell 21, the microphone 23 is connected to the DSP chip 25, the DSP chip 25 is connected to the controller 26, and the earphones 1 are connected to the controller 26.

[0047] The sound pickup device 2 of this embodiment further includes a D / A converter 28, an amplifier 29, a power module 20 and a Bluetooth transmitter module 27. The sound signal input end of the microphone 23 is connected to the second sound transmission hole 221, and the electrical signal output end is connected to the DSP chip 25. The DSP chip 25 is connected to the controller 26 for communication, and the Bluetooth transmitter module 27 is connected to the audio output end of the DSP chip 25. A Bluetooth receiving module 11 is provided in the earphone 1, and the Bluetooth receiving module 11 communicates and cooperates with the Bluetooth transmitter module 27. One end of the D / A converter 28 is connected to the DSP chip 25, and the other end is connected to the Bluetooth transmitter module 27. One end of the amplifier 29 is connected to the D / A converter 28, and the other end is connected to the Bluetooth transmitter module 27.

[0048] The microphone 23 collects external sound signals through the first sound transmission hole 211 and the second sound transmission hole 221 and converts them into electrical signals;

[0049] The DSP chip 25 is used to process the signal transmitted by the microphone 23. The DSP chip 25 of this embodiment can be a PCM4204 chip from TI, and can be integrated and mounted on a circuit board such as a PCB board.

[0050] The controller 26 is used to control the DSP chip 25, analyze the sound data collected by the microphone 23, etc. The controller 26 of this embodiment is a MCU (Microcontroller Unit).

[0051] The Bluetooth transmitting module 27 is used for Bluetooth connection with the Bluetooth receiving modules 11 on one side or both sides of the earphone 1 .

[0052] The D / A converter 28 is used to convert the digital signal transmitted by the DSP chip 25 into an analog signal.

[0053] The function of the amplifier 29 is to amplify the analog signal transmitted from the D / A converter 28 and transmit it to the Bluetooth transmitting module 27 .

[0054] The power module 20 is connected to the controller 26 , the D / A converter 28 and the Bluetooth transmitter module 27 for supplying power to each component.

[0055] The controller 26, DSP chip 25, D / A converter 28, amplifier 29, Bluetooth receiving module 11 and Bluetooth transmitting module 27 of this embodiment are all commonly used commercial products; the Bluetooth transmitting module 27 can be integrated with the controller 26 on the same circuit board, and the Bluetooth receiving module 11 can be integrated on the control circuit board of the earphone 1. The sound pickup device 2 and the earphone 1 of this embodiment are connected by Bluetooth, and can be used separately, which is convenient to operate.

[0056] In this embodiment, the controller 26 , DSP chip 25 , D / A converter 28 , amplifier 29 , Bluetooth transmitter module 27 and other components can be integrated on a circuit board, and then the circuit board is installed in the outer shell 21 , and the microphone 23 is embedded in the microphone shell 22 .

[0057] The bottom of the microphone housing 22 is provided with a hole-shaped interface 222. Therefore, when the microphone 23 is embedded in the microphone housing 22, the microphone 23 can be connected to the DSP chip 25, the power supply and other components through the hole-shaped interface 222.

[0058] Therefore, the hearing aid device of the present invention applies the above-mentioned sound pickup device 2, and the sound enters the second sound transmission hole 221 from the first sound transmission hole 211, and then is transmitted to the microphone 23, and then the signal is analyzed, compared and processed by the DSP chip 25 and the controller 26 to provide more complete information, and finally transmitted to the human ear through the earphone 1.

[0059] The hearing aid device of the present invention effectively solves various problems and defects caused by the fully exposed microphone of the existing popular hearing aids (behind-the-ear or ear canal). The fully exposed microphone collects all ambient sounds, and the DSP processing chip between the microphone and the speaker performs noise reduction, compression, maximum sound output control or peak clipping on the signal from the microphone, and then outputs it through the speaker (headphone). The problem currently encountered by this method is that the DSP chip processing effect cannot achieve the purpose of listening to language in a noisy environment. "Hearing but not clearly" is a common problem of all popular hearing aids.

[0060] The hearing aid device of the present invention is small in size. When in use, the entire sound pickup device 2 can be hung in front of the chest, and the first sound hole 211 can be adjusted to point to the opposite side (face-to-face communication scenario). Then, the cross-contact area between the second sound hole 221 of the microphone housing 22 and the first sound hole 211 and the first sound holes 211 of different lengths can be adjusted to achieve control of the flow rate and frequency response characteristics of the incoming sound. Since the microphone 23 of the present invention is wrapped by the microphone housing 22 and the outer housing 21, the wrapped microphone 23 can effectively receive the sound from the direction pointed by the first sound hole 211, while reducing the sound from other directions. Therefore, the device can reduce the flow rate of sound collected by the microphone 23 in a noisy environment, increase the resonance peaks of some frequencies, increase the sensitivity of the sound pointed to, and thus improve the listening effect in a noisy environment.

[0061] In addition, the sound pickup device 2 of this embodiment can be designed to be small and light as needed, similar to an MP3 device. This allows people with "incomplete hearing loss" to accept this hearing aid more easily when using it, which is different from the original concept (hearing aids are worn on the ears so that others can see that they have ear impairments), which is beneficial to the protection and prevention of hearing.

[0062] Example 2

[0063] like Figure 4 As shown, the structure of the adjustable sound pickup device 2 of this embodiment is basically the same as that of the embodiment 1, except that: there are multiple first sound transmission holes 211 in this embodiment.

[0064] like Figure 4 As shown, in this embodiment, there are three first sound transmission holes 211, and one end of the three first sound transmission holes 211 close to the second sound transmission hole 221 is opened along the movement direction of the microphone housing 22 and is at the same height as the second sound transmission hole 221. The one end of the three first sound transmission holes 211 away from the second sound transmission hole 221 can be opened at a position on the outer surface of the outer shell 21 at the same height as the second sound transmission hole 221, or can be opened at any position on the outer surface of the outer shell 21, and is at a different height or horizontal plane from the second sound transmission hole 221. In this embodiment, the one end of the first sound transmission hole 211 away from the second sound transmission hole 221 is at a different height from the second sound transmission hole 221, and the heights of the three first sound transmission holes 211 are all different, so that the length (or inclination) of each first sound transmission hole 211 is different.

[0065] The outer shell 21 of this embodiment is provided with a plurality of first sound transmission holes 211 of different lengths. By changing the connection between the second sound transmission holes 221 on the microphone shell 22 and the first sound transmission holes 211 of different lengths on the outer shell 21, the frequency response characteristics of the incoming sound can be changed. For example, if the length of the sound transmission channel of one of the first sound transmission holes 211 is 2 cm, and the length of the sound transmission channel of the other first sound transmission hole 211 is 4 cm, then by adjusting the driving mechanism 24, the first sound transmission hole 211 connected to the second sound transmission hole 221 can be changed from 2 cm to 4 cm, and the resonance peak of the sound in the sound transmission channel will change from 4000 Hz to 2000 Hz. In this way, the way in which the external auditory canal of a person changes the frequency response characteristics of the sound transmission can be simulated, so that devices with various "microphone 23 + speaker" systems have more control methods and can more flexibly meet the listening needs of people with different hearing states in different scenarios.

[0066] Example 3

[0067] like Figure 5 As shown, the structure of the adjustable sound pickup device 2 of this embodiment is basically the same as that of Example 1, except that: (1) the microphone housing 22 and the outer housing 21 of this embodiment are both cylindrical; (2) the driving mechanism 24 of this embodiment only includes a transmission component 241, and the transmission component 241 is a turntable.

[0068] like Figure 5As shown, the microphone housing 22 and the outer housing 21 of this embodiment are both cylindrical, the bottom of the microphone housing 22 can be fixedly mounted on the top of the turntable by screws or other fasteners, and the turntable can be rotatably mounted on the outer housing 21 by a rotating shaft or a pin shaft or other structures. Therefore, the transmission assembly 241 is a turntable, and the relative movement of the microphone housing 22 and the outer housing 21 can be achieved by manually rotating the turntable, which is convenient for adjustment.

[0069] Example 4

[0070] like Figure 6 As shown, the structure of the adjustable sound pickup device 2 of this embodiment is basically the same as that of Example 3, except that: (1) the microphone housing 22 and the outer housing 21 of this embodiment are both cones; and (2) the driving mechanism 24 of this embodiment includes a transmission assembly 241 and a driving member (not shown in the figure).

[0071] like Figure 6 As shown, the microphone housing 22 and the outer housing 21 of this embodiment are both cones, and the bottom of the microphone housing 22 can be fixedly installed on the top of the turntable by screws and other fasteners, and the turntable is mounted on the outer periphery of the driving end of the driving member. The driving member of this embodiment can be a common motor or a servo motor. Therefore, the transmission component 241 is a turntable, and the relative movement of the microphone housing 22 and the outer housing 21 can be achieved by electrically rotating the turntable, which is convenient for adjustment.

[0072] Example 5

[0073] like Figure 7 As shown, the structure of the adjustable sound pickup device 2 of this embodiment is basically the same as that of Example 4, except that: (1) the microphone housing 22 and the outer housing 21 of this embodiment are both truncated cones; and (2) the driving mechanism 24 of this embodiment only includes the transmission assembly 241.

[0074] like Figure 7 As shown, the microphone housing 22 and the outer housing 21 of this embodiment are both truncated cones, the bottom of the microphone housing 22 can be fixedly mounted on the top of the turntable by screws or other fasteners, and the turntable can be rotatably mounted on the outer housing 21 by a rotating shaft or a pin shaft or other structures. Therefore, the transmission assembly 241 is a turntable, and the relative movement of the microphone housing 22 and the outer housing 21 can be achieved by manually rotating the turntable, which is convenient for adjustment.

[0075] Example 6

[0076] like Figure 8 As shown, the structure of the adjustable sound pickup device 2 of this embodiment is basically the same as that of the embodiment 3, except that the microphone housing 22 and the outer housing 21 of this embodiment are both spherical.

[0077] like Figure 8 As shown, the microphone housing 22 and the outer housing 21 of this embodiment are both irregular spherical bodies. The bottom of the microphone housing 22 can be fixedly mounted on the top of the turntable by fasteners such as screws, and the turntable can be rotatably mounted on the outer housing 21 by a rotating shaft or a pin shaft. Therefore, the transmission assembly 241 is a turntable, and the relative movement of the microphone housing 22 and the outer housing 21 can be achieved by manually rotating the turntable, which is convenient for adjustment.

[0078] The microphone housing 22 and the outer housing 21 of this embodiment are divided into upper and lower parts. The upper parts of the microphone housing 22 and the outer housing 21 are spherical, and the bottoms of the microphone housing 22 and the outer housing 21 are flat, which makes it convenient to place the entire sound pickup device 2 on a table or other flat surface.

[0079] Two first sound transmission holes 211 are provided along the circumferential direction of the middle spherical surface of the outer shell 21 .

[0080] Therefore, the sound pickup device 2 of the present invention can be set to a commonly used appearance according to actual needs to improve the aesthetics.

[0081] The above are only some embodiments of the present invention. For those skilled in the art, several modifications and improvements can be made without departing from the creative concept of the present invention, which all belong to the protection scope of the present invention.

Claims

1. An adjustable sound pickup device, characterized in that: The invention comprises an outer shell (21), a microphone shell (22), a microphone (23) and a driving mechanism (24), wherein the microphone (23) is installed in the microphone shell (22), the outer shell (21) is sleeved on the outer periphery of the microphone shell (22), the driving mechanism (24) is installed on the outer shell (21), a first sound transmission hole (211) is provided on the outer shell (21), a second sound transmission hole (221) connected to the microphone (23) is provided on the microphone shell (22), the second sound transmission hole (221) cooperates with the first sound transmission hole (211), the microphone shell (22) is movably installed on the outer shell (21) through the driving mechanism (24), and under the drive of the driving mechanism (24), the microphone shell (22) can move along the inner wall of the outer shell (21), so that the second sound transmission hole (221) is completely connected, partially connected or completely staggered with the first sound transmission hole (211); The number of the first sound transmission hole (211) and the number of the second sound transmission hole (221) are at least one; The driving mechanism (24) comprises a transmission assembly (241), the transmission assembly (241) is installed in the outer shell (21), and the microphone shell (22) is installed above the transmission assembly (241); One end of the first sound transmission hole (211) close to the second sound transmission hole (221) is opened along the movement direction of the microphone housing (22) and is at the same height as the second sound transmission hole (221).

2. The adjustable sound pickup device according to claim 1, characterized in that: The first sound transmission holes (211) are multiple.

3. The adjustable sound pickup device according to claim 1, characterized in that: The driving mechanism (24) further comprises a driving member, which is in power connection with the transmission assembly (241) and is used to drive the transmission assembly (241) to work.

4. The adjustable sound pickup device according to claim 3, characterized in that: The driving mechanism (24) further comprises a supporting plate (242), the microphone housing (22) being fixedly mounted on the supporting plate (242), the supporting plate (242) being slidably mounted on a transmission assembly (241), the transmission assembly (241) being a linear driving module, the linear driving module comprising a linear guide rail (241a), a slider (241b), a nut and a lead screw, the linear guide rail (241a) being fixedly mounted on the outer housing (21) and being located at the bottom of the microphone housing (22), the microphone housing (22) being slidably mounted on the linear guide rail (241a) via the slider (241b), the lead screw being mounted on the linear guide rail (241a), the upper end of the nut being fixedly connected to the slider (241b), and the lower end being sleeved on the lead screw, one end of the driving member being dynamically connected to the lead screw for driving the lead screw to rotate.

5. The adjustable sound pickup device according to claim 4, characterized in that: The transmission assembly (241) is a turntable, the microphone housing (22) is fixedly mounted above the turntable, the turntable is rotatably mounted on the outer housing (21), and the turntable is sleeved on the outer periphery of the driving end of the driving member.

6. The adjustable sound pickup device according to claim 5, characterized in that: An inner cavity (212) matching with the microphone shell (22) is provided in the outer shell (21); the first sound transmission hole (211) is connected from the outer wall of the outer shell (21) to the inner cavity (212); the microphone shell (22) is movably mounted in the inner cavity (212); the microphone shell (22) is a prism, a pyramid or a prism; at least two side surfaces of the microphone shell (22) are in contact with the inner wall of the inner cavity (212); and at least one second sound transmission hole (221) is provided on the side surface in contact with the inner wall of the inner cavity (212).

7. The adjustable sound pickup device according to claim 6, characterized in that: The outer shell (21) has an inner cavity (212) matched with the microphone shell (22); the first sound transmission hole (211) is connected from the outer wall of the outer shell (21) to the inner cavity (212); the microphone shell (22) is movably mounted in the inner cavity (212); the microphone shell (22) is a cylinder, a cone, a truncated cone or a sphere; the outer wall of the microphone shell (22) fits the inner wall of the inner cavity (212); and at least one second sound transmission hole (221) is provided on the outer wall of the microphone shell (22).

8. A hearing aid device, comprising the adjustable sound pickup device (2) according to any one of claims 1 to 7, characterized in that: The device also comprises an earphone (1), wherein the earphone (1) is connected to a sound pickup device (2), wherein the sound pickup device (2) further comprises a DSP chip (25) and a controller (26), wherein the controller (26) and the DSP chip (25) are both installed inside an outer shell (21), wherein the microphone (23) is connected to the DSP chip (25), wherein the DSP chip (25) is connected to the controller (26), and wherein the earphone (1) is connected to the controller (26).

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