CN106454567A - Earphone microphone - Google Patents

Abstract

The invention discloses an earphone microphone, which comprises a shell, an ear pad, a loudspeaker unit and a microphone. The shell is provided with a cavity and a sound outlet which are communicated. The ear pad is arranged outside the shell. The speaker unit and the microphone are disposed in the cavity, and the microphone is located between the sound outlet and the speaker unit.

Description

headset microphone

technical field

The invention relates to an earphone microphone, in particular to an earphone microphone capable of passive anti-noise.

Background technique

With the continuous advancement of technology, personal electronic products are all moving towards the trend of lightness and miniaturization. Smart phones, tablet computers or notebook computers have become indispensable for people's daily life. Regardless of the above-mentioned electronic products, in order to allow users to listen to the sound information provided by the electronic products without disturbing others, earphones have become a necessary accessory for the electronic products. Headphones can provide better sound transmission for the listener, so that the listener can clearly hear and understand the sound content, unlike the unclear situation caused by the sound transmission in the air, especially during the user's movement, such as during sports , driving, intense activities or noisy environments will not be affected. In addition, in order to use electronic products to make calls, headset microphones equipped with microphones are also common accessories.

In order to take into account the two functions of listening to sound and collecting sound, the traditional earphone microphone is designed to separate the earphone and the microphone, and the two are connected to each other through a signal line or a simple mechanism. This keeps the earphones close to the ears and the microphone close to the mouth. However, such a design causes the microphone to also absorb environmental noise, which greatly affects the clarity of the user's voice. If active noise cancellation is used, an anti-noise circuit needs to be configured, which increases the cost, and active noise cancellation will also destroy the fidelity of the collected sound. In addition, in order to reduce the volume of the earphone microphone, another traditional earphone microphone adopts bluetooth communication, and the earphone and the microphone are arranged in the same casing. However, the microphone of this design is still designed at the end closest to the mouth, and because the distance between the microphone and the mouth becomes farther, it is necessary to use a more expensive directional microphone for sound collection.

Contents of the invention

The purpose of the present invention is to provide an earphone microphone, which can solve the problems of poor sound collection effect and high cost of anti-noise in the prior art.

To achieve the above purpose, the earphone microphone of the present invention includes a housing, a speaker unit, an ear pad and a microphone. The casing has a chamber and a sound outlet connected thereto. The ear pads are arranged on the periphery of the housing. The speaker unit and the microphone are arranged in the cavity, and the microphone is located between the sound outlet and the speaker unit.

In an embodiment of the present invention, the speaker unit divides the chamber into a front chamber and a rear chamber that are not ventilated, and the microphone is located in the front chamber.

In an embodiment of the present invention, the diameter of the microphone is less than or equal to 6 mm.

In an embodiment of the invention, the microphone is a condenser microphone.

In an embodiment of the present invention, there is a channel between the microphone and a cavity wall of the cavity, for the sound provided by the speaker unit to be transmitted out of the sound outlet through the channel.

In an embodiment of the present invention, the earphone microphone further includes a bluetooth communication unit electrically connected to the speaker unit and the microphone. The bluetooth communication unit has an echo canceling circuit.

In an embodiment of the present invention, the casing is integrally formed, and the maximum outer diameter of the casing is less than 8 mm, so that the casing can be inserted into the ear canal when the user wears it.

In an embodiment of the present invention, the sound receiving port of the microphone is directly opposite to the sound output port.

In an embodiment of the present invention, the earphone microphone further includes a printed circuit board. The printed circuit board is placed in the chamber. The microphone is soldered on the printed circuit board. There is a channel between the printed circuit board and the cavity wall of the cavity, which is used for the sound provided by the speaker unit to be transmitted out of the sound outlet through the channel.

In an embodiment of the present invention, the earphone microphone further includes a microphone lead wire. The cavity wall of the cavity has wire slots. The microphone lead wire is electrically connected to the microphone and extends to the outside through the slot.

Based on the above, in the earphone microphone of the present invention, the loudspeaker unit and the ear pad jointly provide an airtight noise canceling function. Therefore, the earphone microphone of the present invention can isolate ambient noise and achieve better sound collection effect.

In order to make the above-mentioned features and advantages of the present invention more comprehensible, the following specific embodiments are described in detail in conjunction with the accompanying drawings.

Description of drawings

1 is a partial sectional view of an earphone microphone according to an embodiment of the present invention;

2 is a schematic cross-sectional view of a loudspeaker according to another embodiment of the present invention;

3A is a partial cross-sectional view of a speaker according to another embodiment of the present invention;

FIG. 3B is a partial cross-sectional view of the housing of the speaker of FIG. 3A .

Symbol Description

100, 200, 300: headset microphone

110, 210, 310: shell

120: speaker unit

130: Microphone

150, 250: Ear pads

C10, C20: chamber

C12: front chamber

C14: back chamber

P10, P12, P20: sound outlet

W10, W20: Cavity wall

T10, T20: channel

240: Bluetooth communication unit

260: Dustproof net

370, 372: printed circuit board

G12: card slot

380: Microphone lead

G14: trunking

detailed description

FIG. 1 is a partial cross-sectional view of an earphone microphone according to an embodiment of the present invention. Referring to FIG. 1 , the earphone microphone 100 of this embodiment includes a housing 110 , an ear pad 150 , a speaker unit 120 and a microphone 130 . The casing 110 has a chamber C10 and a sound outlet P10. The chamber C10 communicates with the sound outlet P10. The earpad 150 is disposed outside the casing 110 . Both the speaker unit 120 and the microphone 130 are disposed in the cavity C10 , and the microphone 130 is located between the sound outlet P10 and the speaker unit 120 . When the earphone microphone 100 is worn on the user's ear, the sound outlet P10 will face the tympanic membrane of the ear, and the speaker unit 120 and the ear pad 250 will prevent the ambient noise from being transmitted to the microphone 130, thereby producing a passive anti-noise effect. It also improves the fidelity of the sound. Specifically, the speaker unit 120 prevents the ambient noise from being transmitted from the housing 110 to the microphone 130 , and the ear pad 250 prevents the environmental noise from being transmitted from the housing 110 to the microphone 130 . In addition, because the microphone 130 is very close to the user's tympanic membrane, the sound waves generated by the vibration of the tympanic membrane caused by the user's speech can be sensitively detected and collected by the microphone 130. Sound passes into the ear canal and is picked up by the microphone 130 .

In this embodiment, the speaker unit 120 divides the chamber C10 into a front chamber C12 and a rear chamber C14 that are not ventilated to each other, and the microphone 130 is located in the front chamber C12. In other words, the part of the speaker unit 120 in contact with the chamber C10 is essentially an airtight contact, so the gas cannot pass from the rear chamber C14 to the front chamber C12, which reduces the possibility of ambient noise being collected by the microphone 130 . The ear pad 250 of this embodiment is sleeved outside the housing 110 , and the sound outlet P10 is located inside the ear pad 250 . In addition, the diameter of the microphone 130 in this embodiment is, for example, less than or equal to 6 mm, so that the microphone 130 together with the housing 110 can go deep into the user's ear canal and approach the eardrum. The maximum outer diameter of the casing 110 is, for example, less than 8mm, so that it can be inserted into the user's ear canal when the user wears it. The microphone 130 may be a condenser microphone or other types of microphones, and its appearance may be round pie or other appearances. The sound receiving port 132 of the microphone 130 is facing the sound outlet P10, that is, the sound receiving port 132 of the microphone 130 can be seen from the sound port P10, so as to obtain a better sound collecting effect.

In this embodiment, there is a channel T10 between the microphone 130 and a wall W10 of the cavity C10 , for the sound provided by the speaker unit 120 to be transmitted out of the sound outlet P10 through the channel T10 . Therefore, the sound provided by the speaker unit 120 can still be well transmitted to the eardrum. In addition, the casing 110 of this embodiment is integrally formed, and the overall structure is simple and easy to assemble. The earphone microphone 100 of this embodiment may adopt a monaural or binaural design. When a binaural design is adopted, only one side of the microphone 130 may be provided, and a virtual microphone may be provided on the other side to make the sound fields of both sides consistent. The appearance of the virtual microphone is the same as that of the real microphone 130, but it does not have the function of collecting sound.

FIG. 2 is a schematic cross-sectional view of a speaker according to another embodiment of the present invention. Referring to FIG. 2 , the earphone microphone 200 of this embodiment is similar to the earphone microphone 100 of FIG. 1 , and only the differences between the two are introduced here. The earphone microphone 200 of this embodiment further includes a Bluetooth communication unit 240 electrically connected to the speaker unit 120 and the microphone 130 . The electrical connection between the Bluetooth communication unit 240 and the speaker unit 120 and the microphone 130 may be achieved through wires and circuit boards, which are omitted and not shown in FIG. 2 . Through the Bluetooth communication unit 240 , the earphone microphone 200 of this embodiment transmits and receives sound signals with the electronic device in a Bluetooth communication manner. At the same time, the bluetooth communication unit 240 has a sound feedback suppression circuit, which can make the voice signal sent by the microphone 130 only have the voice signal recorded from the speaking end, that is, the voice sent by the user, and will not be mixed into the sound of the speaker unit 120. The sound from the receiving end. Of course, the earphone microphone of the present invention can also transmit and receive sound signals with the electronic device in a wired manner. The electronic device can have the aforementioned sound feedback suppression function. In addition, a battery may be disposed in the earphone microphone 200 , but it is omitted and not shown in FIG. 2 . The entire earphone microphone 200 can be placed almost in the ear canal, which is not only more beautiful, but also reduces the burden on the user's ear. In addition, an ear pad 250 can be assembled outside the casing 210 of the earphone microphone 200 . The ear pad 250 will be properly elastically deformed according to the contour of the user's ear canal, so as to fit the ear canal and substantially isolate external sound. The sound outlet P12 of the housing 210 can be provided with a dust-proof net 260 to prevent foreign objects from entering the housing 210 .

FIG. 3A is a partial sectional view of a speaker according to yet another embodiment of the present invention, and FIG. 3B is a partial sectional view of a housing of the speaker of FIG. 3A . Please refer to FIG. 3A and FIG. 3B , the earphone microphone 300 of this embodiment is similar to the earphone microphone 200 of FIG. 2 , and only the differences between the two are introduced here. The earphone microphone 300 of this embodiment further includes a printed circuit board 370 . The microphone 130 is soldered on the printed circuit board 370 , for example, by surface mount technology (SMT). The printed circuit board 370 is stuck in the chamber C20 of the casing 310 . For example, the cavity wall W20 of the cavity C20 has an engaging groove G12, and the protrusion on the outside of the printed circuit board 370 is just engaged in the engaging groove G12. For the convenience of assembly, the card slot G12 can also be designed to be closed on one side close to the sound outlet P20, and open on the other side. In this way, the printed circuit board 370 can be slid in from the open side of the slot G12 and stopped at the closed side of the slot G12. Moreover, by adjusting the distance between the closed side of the card slot G12 and the sound outlet P20, the distance between the microphone 130 and the sound outlet P20 can be controlled at an ideal design value. In addition, there is a channel T20 between the printed circuit board 370 and the cavity wall W20 of the cavity C20 , for the sound provided by the speaker unit 120 to be transmitted out of the sound outlet P20 through the channel T20 . Moreover, by changing the cross-sectional shape and size of the channel T20 , the effect of adjusting the sound quality emitted by the speaker unit 120 can also be achieved. In addition, the earphone microphone 300 also includes a microphone lead 380 . A wire groove G14 is formed on the cavity wall W20 of the cavity C20. The microphone lead wire 380 is electrically connected to the microphone 130 , and the microphone lead wire 380 is extended to the outside through the wire slot G14 to transmit signals and receive power. In other embodiments, the microphone lead wire 380 may also be connected to another printed circuit board 372 , and then the lead wire is drawn from the printed circuit board 372 to extend to the outside. Wherein, the horn unit 120 is disposed on the printed circuit board 372 .

To sum up, in the earphone microphone of the present invention, the microphone is located between the sound outlet and the speaker unit. Therefore, when the earphone microphone of the present invention is worn on the user's ear, the microphone is located between the speaker unit and the eardrum, and the speaker unit and the microphone can work together to isolate environmental noise to obtain a better sound collection effect, and save active noise reduction. required cost.

Although the present invention has been disclosed in conjunction with the above embodiments, it is not intended to limit the present invention. Anyone with ordinary knowledge in the technical field can make some changes and modifications without departing from the spirit and scope of the present invention. The scope of protection of the present invention should be defined by the appended claims.

Claims (10)

1. a kind of ear microphone is it is characterised in that include：

Housing, has chamber and the sound mouth of connection；

Ear pad, is configured at outside this housing；

Horn single body, is configured at this chamber；And

Mike, is configured at this chamber, and is located between this sound mouth and this horn single body.

2. this chamber is divided into mutually by ear microphone as claimed in claim 1, wherein this horn single body Airproof front chamber and rear chamber, this mike is located at this front chamber.

3. ear microphone as claimed in claim 1, the wherein diameter of this mike are less than or equal to 6 mm.

4. ear microphone as claimed in claim 1, wherein this mike are Electret Condencer Microphone.

5. ear microphone as claimed in claim 1, wherein between this mike and cavity wall of this chamber There is passage, gone out outside this sound mouth via this channel transfer with the sound being provided for this horn single body.

6. ear microphone as claimed in claim 1, also includes bluetooth communication unit, electrically connects this loudspeaker Monomer and this mike, this bluetooth communication unit has sound feedback suppression circuit.

7. ear microphone as claimed in claim 1, wherein this housing are formed in one, and this housing Maximum outside diameter be less than 8mm.

8. the radio reception mouth of ear microphone as claimed in claim 1, wherein this mike is right against this and goes out Sound mouth.

9. ear microphone as claimed in claim 1, also includes printed circuit board (PCB), wherein this printing electricity Road board is placed in this chamber, and this mike is welded on this printed circuit board (PCB), and this printed circuit board (PCB) with should Between the cavity wall of chamber, there is passage, with the sound that provided for this horn single body via this channel transfer Go out outside this sound mouth.

10. ear microphone as claimed in claim 1, also includes microphone leads, wherein this chamber Cavity wall on there is wire casing, this microphone leads is electrically connected this mike and is extended to by this wire casing outer Boundary.