WO2020101356A1

WO2020101356A1 - Earset having utterer voice restoration function

Info

Publication number: WO2020101356A1
Application number: PCT/KR2019/015462
Authority: WO
Inventors: 김은동
Original assignee: 주식회사 오르페오사운드웍스
Priority date: 2018-11-14
Filing date: 2019-11-13
Publication date: 2020-05-22

Abstract

Disclosed is an earset having an utterer voice restoration function. The earset having an utterer voice restoration function, according to the present invention, comprises: a case having a through hole; at least one speaker driver unit provided inside the case and having a back hole; and an in-ear microphone provided inside so as to be separated from the space in which the speaker driver unit is provided, wherein the speaker driver unit and the in-ear microphone are provided inside so as to be separated from the through hole by a separator, a microhole which allows the through hole to communicate with the back hole is formed in the separator, and a resonance space is formed between the microhole and the back hole.

Description

Earset with talker voice restoration

The present invention relates to a noise blocking headset, and more particularly, to an earphone having a speaker voice restoration function that improves the quality of speaker sound and speaker voice by shielding external noise.

Earsets are usually in-ear earphones, which are sound equipment that listens to the sound while inserted into the ear canal and ear canal.

On the other hand, as the earset is inserted into the ear canal, a pressure difference between the inside of the earset (human pressure) and the outside (atmospheric pressure) occurs. That is, as the ear tip formed on the ear set is in close contact with the inner wall of the ear canal, a difference in air pressure between the inside and the outside of the ear set is generated.

However, this air pressure difference affects the diaphragm of the speaker driver unit. Specifically, the diaphragm is biased toward the outside of the earset. Due to this phenomenon, sound output is difficult, and sound is distorted.

Accordingly, in order to prevent the vibration of the diaphragm, a back hole is formed at the rear of the speaker driver unit. The back hole formed at the rear of the speaker driver unit communicates with the through hole formed in the case to perform the function of maintaining the same air pressure inside and outside the earset. Thus, the diaphragm can vibrate at a fixed position. Here, the speaker driver unit may be largely classified into a dynamic driver unit and a balanced armature driver unit.

On the other hand, it can be artificially adjusted to generate a different pressure difference during the operation of the diaphragm, as one of the methods, the mesh (Mesh) density of the damper and the like to cover the backhaul. A speaker driver unit is also tuned using this method.

However, the backhaul formed at the rear of the speaker driver unit has a problem of acting as a path through which external noise is input. That is, when the back hole formed at the rear of the speaker driver unit is closed, the above-mentioned vibration plate bias occurs, and thus it cannot be used inside an aircraft or in a high mountainous area. In addition, when the backhaul of the speaker driver unit is closed, there is a problem in that vibration of the diaphragm is suppressed and sound is distorted.

Accordingly, there is a need for a method capable of improving the quality of the speaker sound and the speaker's voice while shielding external noise from entering through the back hole formed at the rear of the speaker driver unit.

Therefore, the present invention was made to solve the problems of the prior art described above, and an object of the present invention is to form a microhole communicating the through hole formed in the case and the back hole formed in the speaker driver unit in an isolator separating the installation space. , By providing an resonance space between the micro-hole and the back-hole, it is to provide an earset having a talker voice restoration function that not only shields external noise, but also improves the quality of speaker sound and talker voice.

Earset having a talker voice recovery function of the present invention for achieving the above object, the case is formed with a through hole; At least one speaker driver unit installed in the case and having a back hole; And an in-ear microphone in which the speaker driver unit is installed separately from the space in which it is installed.

The speaker driver unit and the in-ear microphone are separated and isolated from the through hole by an isolator, a micro hole communicating the through hole and the back hole is formed in the isolator, and a resonance space between the micro hole and the back hole It is formed.

In this case, the isolator in which the fine hole is formed may be a resonance case covering the rear end of the speaker driver unit including the back hole. Further, the insulator may be an inner wall of the case or a printed circuit board (PCB).

Meanwhile, it is preferable that the micro-holes have a diameter of 100 µm or less or 40 µm or less.

In addition, the micro-holes may have a diameter of 100 µm or more, and the micro-holes may be covered with a mesh. The density of the mesh is inversely proportional to the diameter of the through hole, and when tuning the speaker driver unit, the density of the mesh is preferably set within a range of ± 20%.

Here, an out-ear microphone for receiving voice and external noise introduced through the through hole may be formed between the micro hole and the through hole.

On the other hand, the diameter of the micro-holes is preferably set in contrast to the thickness of the insulator, and the ratio of the diameter of the micro-holes and the thickness of the insulator is more preferably set to 1: 1,000 or more.

As described above, according to the earset having a talker voice restoration function according to the present invention, by externally shielding external noise flowing into the backhaul of the speaker driver unit, only speaker sound without external noise can be transmitted to the external auditory meatus as well as externally. Since only the speaker's voice without noise can be transmitted to the microphone (in-ear microphone), the quality of the speaker sound and the speaker's voice can be improved.

In addition, the resonance space of the speaker driver unit can be formed, and the air pressure inside and outside the earset can be kept the same, so that distortion of sound can be prevented as bass reproduction becomes smooth.

1 is a conceptual diagram of a noise shielding earset according to an embodiment of the present invention.

2 is a conceptual diagram of a noise shielding earset according to another embodiment of the present invention.

3 is a conceptual diagram of a noise shielding earset according to another embodiment of the present invention.

4 is a conceptual diagram of a noise shielding earset according to another embodiment of the present invention.

5 is a flowchart illustrating a process in which the noise shielding earset is interlocked with a smartphone according to an embodiment of the present invention.

6 is a flowchart illustrating a process in which the noise shielding earset is interlocked with a specific device according to an embodiment of the present invention.

Earset having a talker voice restoration function of the present invention, the case is formed with a through hole; At least one speaker driver unit installed in the case and having a back hole; And an in-ear microphone in which the speaker driver unit is installed separately from the space in which it is installed.

Hereinafter, the present invention will be described in detail with reference to preferred embodiments of the present invention and the accompanying drawings, and the same reference numerals in the drawings will be described on the assumption that they refer to the same components.

When any one component in the detailed description of the invention or the claims "includes" another component, it is not interpreted as being limited to only the component, unless otherwise stated, and other components are not interpreted. It should be understood that it may further include.

In addition, in the detailed description of the invention or in the claims, the components named “~ means”, “~ unit”, “~ module”, and “~ block” refer to units that process at least one function or operation, Each of these can be implemented by software or hardware, or a combination thereof.

Hereinafter, the type of holes used in the description of the present invention will be described.

Backhaul (BH): A hole formed at the rear of the speaker driver unit

Micro hole (H): a hole having a diameter of 100 μm or less, or preferably 40 μm or less

Through hole (O): hole with a diameter exceeding 100㎛

Hereinafter, an example in which an ear set having a voice restoration function of the present invention (hereinafter, referred to as “noise shield ear set”) is implemented will be described through a specific embodiment.

On the other hand, the description of the embodiment of the present invention is as follows.

First, a description will be given of a case in which a speaker driver unit and an in-ear microphone are built in the noise shielding earphone of the present invention (FIGS. 1 to 3). Next, a case in which a speaker driver unit, an in-ear microphone, and an out-ear microphone are built in the noise shielding earphone of the present invention will be described (FIG. 4).

On the other hand, the technology presented in the present invention can be applied to the case where the speaker driver unit and the out-ear microphone are built-in, or only the speaker driver unit is built-in.

Referring to FIG. 1, the noise shielding earphone of the present invention includes a case 1 having a through hole O and an in-ear microphone 2 formed inside the case 1 to collect voice transmitted from the external auditory meatus. , It is formed inside the case 1 and includes a speaker driver unit 3 for outputting sound to the ear canal.

Here, in the present invention, the resonance case 4 is further formed at the rear of the speaker driver unit 3 in which the backhaul BH is formed.

Then, the resonance case 4 is formed with a micro-hole (H) of a size that is shielded from external noise.

On the other hand, by using a laser to form a micro-hole (H) at the position of the backhaul (BH) of the speaker driver unit (3), it is possible to prevent external noise from entering, but there is a disadvantage that processing cost increases.

Accordingly, in the present invention, the minimum diameter of the hole that can shield external noise is formed in the resonance case (4). Specifically, it is preferable to form micro holes (H) having a diameter of 100 μm or less or 40 μm or less. Preferably, it is preferable to form micro holes (H) having a size of 40 µm or less.

Meanwhile, the speaker driver unit 3 may selectively use a dynamic driver unit and a balanced armature driver unit. When the dynamic driver unit is applied as the speaker driver unit 3, the resonance case 4 may be covered with a shape similar to or the same as the back shape on which the back hole BH is formed, and usually has a cylindrical shape. Similarly, when the balanced armature driver unit is applied as the speaker driver unit 3, the resonance case 4 may be covered with a shape similar to or the same as the back shape on which the backhaul BH is formed. Then, the rear surface of the speaker driver unit 3 and the contact surface of the resonance case 4 are sealed.

In this embodiment, the case where the in-ear microphone 2 and the speaker driver unit 3 are configured one by one is described, but a plurality of them may be configured.

On the other hand, in the present exemplary embodiment, although the installation spaces SP1 and SP2 are separated by using the

inner walls

11 and 12 and the resonance case 4, the inner walls and the PCB detachable or integrally coupled to the case and the case are illustrated. (Printed Circuit Board) can be used to separate the installation space (SP1, SP2). That is, the installation spaces SP1 and SP2 can be separated using an insulator including a case, an inner wall, and a PCB. Accordingly, when the resonance space RS is formed of a case, an inner wall, a PCB, etc., a micro hole H will be formed in a case, an inner wall, a PCB, and the like.

Here, when the inner wall is used as the insulator, the resonance space RS can be formed in a cylindrical or polygonal cylindrical shape extending from the inner wall in which the micro-holes H are formed in the direction of the speaker driver unit 3. That is, in the case of the dynamic driver unit, the resonance space RS may be generally formed in a cylindrical shape, and in the case of the balanced armature driver unit, the resonance space RS may be usually formed in a quadrangular prism shape. Of course, as described above, it is preferable to have a shape similar to or the same as the rear shape of the speaker driver unit 3. Then, the rear surface of the speaker driver unit 3 and the contact surface of the resonance case 4 are sealed.

In addition, when using a PCB as an isolator, since the PCB is usually a flat plate, it can be mounted in a manner that seals a cross section of a case 1 at a predetermined position. That is, it has a structure in which the PCB completely seals the opened area when the case 1 is cut at a predetermined position. Then, one side of the PCB faces the installation space SP1, and the other side faces the installation space SP2. The inner wall 11 separating the installation space SP2 contacts the other surface of the PCB and is sealed. Accordingly, the speaker driver unit and the in-ear microphone may be separately installed based on the inner wall 11.

The micro-holes H formed in the earset to which various methods can be applied as described above communicate the back holes BH of the speaker driver unit 3 with the through-holes O formed in the case 1.

The technology for separating the installation spaces SP1 and SP2 will be described in more detail.

Inside the case 1, the outer space SP1 and the inner space SP2 are separated by an isolator. In this embodiment, it is illustrated that the insulator is composed of

inner walls

11 and 12 and a resonance case 4. Of course, it is also possible to construct the isolator only with the resonance case 4.

The inner space SP2 is separated by the first inner wall 11, and the in-ear microphone 2 is installed in one space separated by the first inner wall 11, and the speaker driver unit 3 is provided in the other space. It is implicit.

The speaker driver unit 3 and the resonance case 4 are inserted into the first inner wall 11 and the second inner wall 12 to spatially separate the outer space SP1 and the speaker sound passage SH. The in-ear microphone 2 may be installed in the microphone collecting passage VH. That is, one space in which the in-ear microphone 2 is mounted forms a microphone collection passage VH, and the other space in which the speaker driver unit 3 is mounted is the speaker sound passage SH and the resonance space RS To form. As described above, one side of the space is used as a microphone collecting passage (VH). In the nozzle portion, a microphone collecting passage (VH) is formed using the first inner wall 11 and the case 1, and in the center portion of the body, the first inner wall (11) and a separate voice guide inner wall (not shown) may be used to form a microphone collecting passage (VH). Accordingly, the straightness of voice input can be improved. On the other hand, the other space is used as a speaker sound path (SH), in the nozzle portion, the first inner wall 11 and the case 1 are used to form the speaker sound path SH, and in the center of the body, the first inner wall ( 11), the second inner wall 12 and the case 1 may be selectively used to form a speaker sound path SH or a resonance space RS. Accordingly, the straightness of the speaker reproduction sound can be improved and the reproduction of the bass sound can be performed smoothly.

On the other hand, the diameter of the micro-holes (H) formed in the insulator is preferably set in contrast to the thickness of the insulator. As an example, the ratio of the diameter of the micro hole H and the thickness of the insulator may be set within a range of 1: 100 to 1,000, and preferably set to 1: 1,000 or more. For example, when the thickness of the insulator is 1 mm (1,000 μm), the diameter of the micro hole H may be set within a range of 1 to 10 μm.

The noise shielding earset of the present invention configured as described above shields external noise by using micro holes (H) formed in an insulator including a case, an inner wall, a PCB, and the like, and has the same air pressure inside and outside the earset. Can be maintained. In addition, by forming a resonance space RS between the micro hole H and the rear portion including the back hole BH of the speaker driver unit 3, the sound can be enriched.

In addition, by forming a micro hole (H) having a relatively small diameter between the back hole (BH) and the through hole (O), it performs the function of a low-pass filter (Low Pass Filter). Through this, when transmitting the signal-processed data through the network, to reduce the amount of data, the high / low-band of the bandwidth is removed. The signal that passes through the micro-hole (H) corresponds to the low-end (less than 100hz) and affects the amount of data. Will not go crazy.

Meanwhile, in the description of FIG. 2, only the difference from FIG. 1 will be described to avoid duplicate description.

Referring to FIG. 2, in this embodiment, the through hole O is formed in the resonance case 4, and the through hole O is covered with a mesh 5.

In other words, to form a through hole (O) with a diameter of at least 10 times larger than the minimum diameter (40㎛) of a hole capable of shielding external noise, and to a mesh (5) having a density inversely proportional to the diameter of the through hole (O) You can also cover. At this time, the density of the mesh 5 may be determined in consideration of tuning, and is preferably set within a range of ± 20% of the density. Since the through holes O and the mesh 5 are combined to shield external noise, it is possible to effectively shield external noise through mutual complementation and maintain the same air pressure inside and outside the earset.

As described above, considering that the diameter of the hole capable of shielding external noise is possible around 40 µm, the insufficient noise shielding ability after drilling a hole (fine hole (H)) of about 0.4 to 0.6 mm, which is approximately 10 times larger, is obtained. Complement while covering the through hole (O) with a high-density mesh (5) of 300 to 600 or more for acoustic tuning, it is possible to prevent the external noise from flowing into the ear canal and in-ear microphone (2). That is, it is possible to implement the desired in-ear microphone 2 technology.

On the other hand, this embodiment describes the case of covering the through hole O using the mesh 5, but the through hole O may be covered by using a pad (not shown) having a micro hole. In addition, the mesh 5 may be covered with the fine holes H formed in FIG. 1 for the purpose of tuning or the like.

1 and 2, by forming a resonance case (4) for shielding external noise at the rear of the speaker driver unit (3) of the present invention, it is possible to shield external noise from entering and improve sound quality. Noise can be prevented from being input into the in-ear microphone 2. That is, external noise is introduced through the backhaul (BH) formed at the rear of the speaker driver unit (3) and transmitted to the user's ear canal, or external noise is in-ear along the speaker sound path (SH) and the microphone collection path (VH). It is possible to solve the problem that is input to the microphone (2). In addition, the resonance space RS behind the diaphragm of the speaker driver unit 3 is further formed, and the resonance space RS communicates with the through hole O of the case 1 to improve the back volume and maintain the same air pressure. I can do it. Accordingly, the bass sound of the speaker driver unit 3 is enhanced, thereby improving the sound quality.

Specifically, in the present invention, a micro-hole (H) of about 100㎛, preferably 40㎛ around which can shield external noise can be directly formed in the resonance case (4). Further, a through hole O having a diameter of more than 100 μm can be formed in the resonance case 4 and covered with a mesh 5 having a density inversely proportional to the diameter of the through hole O. And, to form a micro-hole (H) around 100㎛, preferably 40㎛ around the resonance case (4) capable of shielding the external noise, and cover the micro-hole (H) with a mesh (5) for tuning can do.

Thus, by using the resonance case 4 having a micro hole H, the air pressure inside and outside the earset is maintained at the same time, and external noise flowing through the through hole O formed in the case 1 is shielded. .

In addition, the resonance space RS is expanded by the resonance case 4, and the back volume is improved, thereby enhancing the sound quality by enhancing the bass, and the backhaul BH and fine by the operation of the speaker driver unit 3 Even when the sound is reversed through the hole (H) (through hole (O) and mesh (5), fine hole (H) and mesh (5)), the fine hole (H) of the resonance case (4) (through (O ) And the mesh (5), the micro-hole (H) and the mesh (5)), so only the low frequency of 100Hz or less is output, and the sound leaking through the through hole (O) of the case (1) can also be shielded.

On the other hand, the noise shielding earsets presented in FIGS. 1 to 8 require a space for installing the resonance case 4 because the resonance case 4 is formed inside the case 1.

Accordingly, a method for directly forming micro holes in a case, an inner wall, and a PCB capable of forming an insulator will be described.

Meanwhile, in the description of FIG. 3, only the differences from FIGS. 1 and 2 will be described to avoid duplicate description.

Referring to FIG. 3, in the noise shielding earphone of the present invention, the case 1 and the space formed inside the case 1 are separated into an external space SP1 and an internal space SP2, and a micro hole H The insulator 6 formed therefrom, the first inner wall 11 separating the inner space SP2, and the in-ear microphone 2 installed in one space separated by the first inner wall 11, and (1) The speaker driver unit (3) installed in the other space separated by the inner wall (11), the second inner wall (12) forming the installation space of the speaker driver unit (3), and the back hole of the speaker driver unit (3) BH) to form a resonant space (RS) communicating with the rear portion, and includes a third inner wall (13) formed at a position where the resonant space (RS) communicates with the micro hole (H).

Here, as the insulator 6, a case, an inner wall, a PCB, etc. may be used, and in this embodiment, a case of using the PCB 6 will be described. That is, micro holes H are formed in the PCB 6.

On the other hand, one side of the space is used as a microphone collecting passage (VH), in the nozzle region, the first inner wall 11 and the case 1 are used to form the microphone collecting passage VH, and in the center of the body, the first inner wall ( 11) and a separate voice guide inner wall (not shown) may be used to form a microphone collecting passage (VH). Accordingly, the straightness of voice input can be improved. On the other hand, the other space is used as a speaker sound path (SH), in the nozzle portion, the first inner wall 11 and the case 1 are used to form the speaker sound path SH, and in the center of the body, the first inner wall ( 11), the second inner wall 12, the third inner wall 13 and the case 1 may be selectively used to form a speaker acoustic passage SH or a resonance space RS. Accordingly, the straightness of the speaker reproduction sound can be improved and the reproduction of the bass sound can be performed smoothly. Then, the PCB 6 may be seated using the first inner wall 11 and the third inner wall 13.

On the other hand, a through hole (H) may be formed at the location of the fine hole (H), that is, when the through hole (H) having a diameter of more than 10㎛ diameter of the fine hole (H) is formed, the fine hole (H) is formed A through hole H may be covered using a pad (not shown). In addition, although a case in which the through hole H is covered with a pad (not shown) is described, a pad (not shown) having a micro hole H may be directly mounted on the back hole of the speaker driver unit 3. .

Meanwhile, the pad (not shown) may be mounted on the outer space SP1 or the inner space SP2, or may be directly mounted on the PCB 6.

Various tuning may be possible according to the size of the diameter of the micro-hole H formed in the pad (not shown). In addition, when the pad (not shown) is manufactured in a mesh form, various tunings are possible according to the mesh density.

Meanwhile, the speaker driver unit 3 may be installed on the speaker sound passage SH, and more specifically, the speaker driver unit 3 may be installed on the nozzle. Accordingly, the speaker sound passage SH is shortly formed in the front portion of the speaker driver unit 3, and a larger resonance space RS can be formed in the rear portion of the speaker driver unit 3.

Meanwhile, in the description of FIG. 4, only the difference from FIGS. 1 to 3 will be described in order to avoid duplicate description.

Referring to FIG. 4, the noise shielding earset of the present invention is formed in the case 1 as compared to FIGS. 1 to 3 and out-ear collecting sound (voice and external noise) transmitted from the outside of the noise shielding earset The microphone 7 is further formed.

The out-ear microphone 7 may be built in the external space SP1. Thus, a through hole O for maintaining air pressure and collecting sound may be formed in the case 1.

That is, a through hole (O) is formed in the case (1) of the noise shielding earset presented in this embodiment, and the voice and external noise flowing through the through hole (O) formed in the case (1) are out-ear microphones (7). ), The out-ear microphone 7 checks whether the voice of the talker is generated, or refers to the voice of the talker input to the out-ear microphone 7 to enter the in-ear microphone 2 It can be used as a reference signal to restore the original voice to the original voice. On the other hand, when the external noise in which the voice of the talker is mixed is a set value, for example, 40 db or more, it is necessary to stop driving the out-ear microphone 7 and restore only the in-ear microphone 2 to restore the original voice. desirable. In this case, the original sound restoration may be performed using a pre-stored user voice sample.

On the other hand, the noise shielding earsets shown in FIGS. 1 to 4 describe the case of forming micro holes (H) in the resonance case (4) or forming through holes (O) and the mesh (5), A fine hole (H) and a mesh (5) can be formed in (4). That is, a fine hole H and a mesh 5 may be formed in the resonance case 4 for tuning of the speaker driver unit 3 together with double noise shielding. That is, since the vibration plate of the speaker driver unit 3 can be alleviated as the resonance space RS is formed, the through hole O formed in the case 1 may be replaced with a micro hole H. Accordingly, the primary noise is shielded by the micro-holes H formed in the case 1, the micro-holes H formed in the resonance case 4, the combination of the through-holes O and the mesh 5, and the micro-holes ( By the optional combination of H) and the mesh 5, it is possible to obtain the effect of secondary noise shielding.

Hereinafter, the operation process of the noise shielding ear set of the present invention will be described.

First, it is assumed that the noise shielding earphone is in a paired state with a smartphone, and a wired / wireless communication method may be used for pairing, and a short-range wireless communication method such as Wi-Fi, Bluetooth, NFC, etc. may be used. In this embodiment, a description will be given of a process of operating the noise shielding earpiece in a paired state with Bluetooth.

On the other hand, this embodiment describes the process of transmitting and receiving between the smartphone and the noise shielding earphone in a paired state, but the noise shielding earphone itself may include a smartphone function, so the noise shielding earphone itself may process all processes. There will be.

In addition, in the present embodiment, only a process of receiving an audio signal executed in a smartphone and switching to a call state to transmit a talker voice signal will be described.

In addition, in the present embodiment, when the in-ear microphone 2 and the speaker driver unit 3 are installed, and when the resonance case 4 to which the resonance case 4 is applied is applied to the speaker driver unit 3 (bluetooth earphone for communication) It will be described.

Referring to FIG. 5, when a file executed in a smartphone includes sound, the smartphone transmits the corresponding sound signal to a noise shielding earset (S11).

Accordingly, the corresponding sound signal is processed by the noise shielding earset and output through the speaker driver unit 3 (S12). At this time, even if the external noise is generated and external noise is introduced through the through hole O of the case 1, the fine hole H of the resonance case 4 or the through hole O of the resonance case 4 and the mesh Since it is shielded by (5), it is possible to output speaker sound that does not include external noise.

When a call request is made while sound is being output through the speaker driver unit 3 (S13), when the user is switched to a call state in response to user manipulation, the speaker driver unit processes the voice signal of the other party's caller transmitted from the smartphone. 3) to output (S14). Even in this case, as in S12, speaker sound that does not include external noise may be output even when external noise is introduced.

On the other hand, when the talker generates a voice, the talker's voice propagated into the ear canal through the Eustachian tube is picked up through the in-ear microphone 2, and the talker's voice signal is transmitted to the smartphone and transmitted to the other party's caller ( S15).

At this time, the voice and external noise of the speaker propagated through the mouth flows through the through hole O of the case 1, but the fine hole H of the resonance case 4 or the through hole O of the resonance case 4 ) And is shielded by the mesh (5), so only the voice of the speaker propagated into the ear canal through the Eustachian tube enters the in-ear microphone (2) and is processed, so that the original sound of the speaker without external noise is easily Can be restored.

On the other hand, when the call ends, the suspended file can be held in a standby state or the suspended file can be executed.

Referring to FIG. 6, first, a pairing between a device to be controlled and a noise shielding earset is performed (S21).

When pairing is performed, it is determined whether the voice of the talker is generated (S22), and when the voice of the talker is generated, a command signal corresponding to the voice of the talker is generated (S22).

At this time, the voice and external noise of the speaker propagated through the mouth flows through the through hole O of the case 1, but the fine hole H of the resonance case 4 or the through hole O of the resonance case 4 ) And is shielded by the mesh (5), so only the voice of the speaker propagated into the ear canal through the Eustachian tube flows into the in-ear microphone (2), and is processed. Can be restored. Accordingly, it is possible to generate an accurate command signal.

Subsequently, the noise shielding earset transmits a command signal to the paired device (S23).

Accordingly, control corresponding to a command signal is performed in the corresponding device (S24).

On the other hand, when an acoustic signal is generated according to the driving of the corresponding device (S25), the corresponding acoustic signal is transmitted to the noise shielding earset (S26), and the corresponding acoustic signal is then output through the speaker driver unit 3 (S27). . At this time, even if the external noise is generated and external noise is introduced through the through hole O of the case 1, the fine hole H of the resonance case 4 or the through hole O of the resonance case 4 and the mesh Since it is shielded by (5), it is possible to output speaker sound that does not include external noise.

On the other hand, when the voice of the talker is generated while sound is being output through the speaker driver unit 3, the voice of the talker is picked up through the in-ear microphone 2, and when a command signal corresponding to the talker's voice is generated , The talker's command signal is transmitted to the corresponding device to control the command signal.

Meanwhile, FIGS. 5 and 6 illustrate a case in which the in-ear microphone 2 and the speaker driver unit 3 use a noise-shielding earphone built in, but the noise-shielding earphone including the out-ear microphone 7 In the case of using, if the speaker's voice is generated while sound is being output through the speaker driver unit 3, the out-ear microphone 7 is used to determine whether the speaker is speaking or not through the current speaker driver unit 3 There may be control to reduce the sound output. This is to accurately collect the speaker's voice through the in-ear microphone 2. On the other hand, when the external noise in which the voice of the talker is mixed is a set value, for example, 40 db or more, the driving of the out-ear microphone 7 is stopped and only the in-ear microphone 2 is driven to restore the original voice. have. At this time, it is preferable to perform original sound restoration using a user voice sample stored in advance.

The technical idea of the present invention has been described through several examples.

It is apparent that a person skilled in the art to which the present invention pertains can variously modify or change the embodiments described above from the description of the present invention. In addition, although not explicitly illustrated or described, a person having ordinary knowledge in the technical field to which the present invention pertains can make various modifications including the technical spirit according to the present invention from the description of the present invention. Is self-evident, which still falls within the scope of the present invention. The above-described embodiments described with reference to the accompanying drawings are described for the purpose of illustrating the present invention, and the scope of the present invention is not limited to these embodiments.

The present invention can be usefully used in a noisy place.

Claims

A case in which a through hole is formed;

At least one speaker driver unit installed in the case and having a back hole; And

And an in-ear microphone in which the speaker driver unit is installed separately from the built-in space.

The speaker driver unit and the in-ear microphone are separated and isolated from the through hole by an isolator,

A micro hole communicating the through hole and the back hole is formed in the isolator,

Earset having a talker voice restoration function in which a resonance space is formed between the micro-hole and the back-hole.
According to claim 1,

The isolator having the micro-hole is an earset having a speaker voice restoration function, which is a resonance case covering the rear end of the speaker driver unit including the back hole.
According to claim 1,

The insulator is an earset having a voice recovery function of a speaker, which is an inner wall of the case.
According to claim 1,

The insulator is an earset having a speech recovery function of a talker, which is a printed circuit board (PCB).
According to claim 1,

The fine hole is an earset having a speaker voice restoration function, the diameter of which is less than or equal to 100㎛ or 40㎛.
According to claim 1,

The micro-hole is an earset having a talker voice restoration function in which the diameter is formed to be 100 µm or more.
The method of claim 6,

The micro-hole is an earset having a speaker's voice restoration function that is covered with a mesh.
The method of claim 7,

The density of the mesh is an earset having a talker voice restoration function inversely proportional to the diameter of the through hole.
The method of claim 8,

When the speaker driver unit is tuned, the density of the mesh is set within a range of ± 20%.
According to claim 1,

An earset having an utterance voice recovery function in which an out-ear microphone for receiving voice and external noise introduced through the through hole is formed between the micro-hole and the through hole.
According to claim 1,

The diameter of the fine hole is an earset having a talker voice restoration function that is set in comparison with the thickness of the insulator.
The method of claim 11,

Earpiece having a talker voice restoration function, the ratio of the diameter of the micro-hole to the thickness of the insulator is set to 1: 1,000 or more.