CN215499484U - Wireless noise reduction earphone - Google Patents
Wireless noise reduction earphone Download PDFInfo
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- CN215499484U CN215499484U CN202120916105.7U CN202120916105U CN215499484U CN 215499484 U CN215499484 U CN 215499484U CN 202120916105 U CN202120916105 U CN 202120916105U CN 215499484 U CN215499484 U CN 215499484U
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Abstract
The utility model relates to the technical field of earphones, in particular to a wireless noise reduction earphone. The wireless earphone comprises an earphone shell and an earphone assembly, wherein the earphone assembly is arranged in the earphone shell; the earphone assembly comprises a main control module, a feedback microphone, a call microphone and a feedforward microphone, wherein the feedback microphone, the call microphone and the feedforward microphone are electrically connected with the main control module; the inner cavity of the earphone shell comprises three cavities, and the feedback microphone, the call microphone and the feedforward microphone are respectively arranged in different cavities; the feed-forward microphone and the call microphone confirm the target sound source position and feed the target sound source position back to the main control module, and the call microphone picks up a target sound source signal; the feedback microphone collects in-ear noise signals and feeds back the in-ear noise signals to the main control module, and the feedforward microphone collects out-of-ear noise signals and feeds back the out-of-ear noise signals to the main control module. The three microphones are mutually matched to achieve the effects of active noise reduction and environmental noise reduction, the noise reduction performance of the earphone is improved, and the use experience of a user is improved.
Description
Technical Field
The utility model relates to the technical field of earphones, in particular to a wireless noise reduction earphone.
Background
The wireless earphone can communicate with the terminal equipment by utilizing a wireless communication technology (such as a Bluetooth technology, an infrared radio frequency technology and the like), compared with the wired earphone, the wireless earphone is more convenient and fast to use due to the fact that the wireless earphone is free from the constraint of physical wires, and therefore the wireless earphone is rapidly developed, and the left earphone and the right earphone of the wireless earphone can also be connected through Bluetooth.
With the improvement of the requirement of people on the communication quality, the noise reduction earphone is widely applied. The noise reduction earphone not only can reduce the ambient noise and protect the hearing of users, but also can lead people to listen to high-quality music and improve the enjoyment experience. At present, the noise reduction earphone is more and more favored by consumers, and meanwhile, the requirement of people on the noise reduction effect of the noise reduction earphone is higher and higher.
However, in actual use, the noise reduction effect of the current noise reduction earphone is general, and no noise reduction earphone can simultaneously realize conversation noise reduction and environment noise reduction. In view of this, the market needs a new wireless headset, which further improves the noise reduction performance of the headset.
SUMMERY OF THE UTILITY MODEL
In view of the above problems, an object of the present invention is to provide a wireless noise reduction earphone, which can simultaneously reduce noise during communication and reduce noise in the environment, and improve the noise reduction performance of the earphone.
In order to achieve the purpose, the utility model provides the following technical scheme:
a wireless earphone comprises an earphone shell and an earphone assembly, wherein the earphone assembly is arranged in the earphone shell, and a sound outlet hole is formed in the earphone shell;
the earphone assembly comprises a main control module, a feedback microphone, a communication microphone and a feedforward microphone, wherein the feedback microphone, the communication microphone and the feedforward microphone are electrically connected with the main control module;
the inner cavity of the earphone shell comprises a first cavity, a second cavity and a third cavity, the feedback microphone is arranged in the first cavity, the communication microphone is arranged in the second cavity, the feedforward microphone is arranged in the third cavity, and the sound outlet is communicated with the first cavity;
the feed-forward microphone and the call microphone are used for confirming a target sound source position and feeding back the target sound source position to the main control module, and the call microphone is used for picking up a target sound source signal;
the feedback microphone is used for collecting noise signals in the earphone and feeding back the noise signals in the earphone to the main control module, and the feedforward microphone is used for collecting noise signals outside the earphone and feeding back the noise signals outside the earphone to the main control module.
Preferably, the earphone assembly comprises a speaker unit for separating the first cavity from the second cavity.
Preferably, the earphone assembly further comprises a feed-forward microphone sleeve and a communication microphone sleeve, the feed-forward microphone sleeve is used for providing the third cavity for accommodating the feed-forward microphone, and the communication microphone sleeve is used for providing the second cavity for accommodating the communication microphone.
Preferably, the loudspeaker unit includes moving iron unit and moving coil unit, the moving coil unit sets up first cavity with between the second cavity, the moving iron unit with the feedback microphone sets up in the first cavity.
Preferably, the outgoing directions of the talking microphone and the feedforward microphone form an included angle of 90 degrees.
Preferably, the main control module includes an active noise reduction chip and an environment noise reduction chip, the active noise reduction chip is respectively connected with the feedback microphone, the feedforward microphone and the speaker unit, and the environment noise reduction chip is respectively connected with the feedforward microphone and the conversation microphone.
Preferably, the headset assembly further comprises a circuit board, and the circuit board is electrically connected with the main control module, the feedback microphone, the conversation microphone and the feedforward microphone respectively.
Preferably, the headset assembly further comprises a power module, and the power module is electrically connected with the circuit board, the main control module, the feedback microphone, the call microphone and the feedforward microphone respectively.
Compared with the prior art, the utility model has the following beneficial effects:
the utility model provides a wireless noise reduction earphone which comprises an earphone assembly, wherein the earphone assembly comprises a main control module, a feedback microphone, a communication microphone and a feedforward microphone, an inner cavity of an earphone shell comprises a first cavity, a second cavity and a third cavity, the feedback microphone is arranged in the first cavity, the communication microphone is arranged in the second cavity, the feedforward microphone is arranged in the third cavity, and the first cavity is communicated with a sound outlet of the earphone. The main control module adopts a beam forming algorithm to accurately calculate the direction of a target sound source, accurately picks up a voice signal of a user and eliminates an acoustic signal of a non-target sound source, so that active noise reduction is realized; the feedback microphone collects noise signals in the earphone, the feedforward microphone collects noise signals outside the earphone, the main control module converts a sound wave which is opposite to the noise signals and adds the sound wave to the loudspeaker unit, and therefore environmental noise reduction is achieved. The three microphones are mutually matched to achieve the effects of active noise reduction and environmental noise reduction, the noise reduction performance of the earphone is effectively improved, and the use experience of a user is improved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive exercise.
Fig. 1 is an overall structure diagram of a wireless noise reduction earphone according to an embodiment of the present invention;
fig. 2 is a schematic cross-sectional view of a wireless noise reduction earphone according to an embodiment of the present invention.
[ description of figures ]: ear muff 1, feedback microphone 2, moving coil unit 3, earphone shell 4, feedforward microphone 5, conversation microphone 6, conversation microphone cover 7, moving iron unit 8, feedforward microphone cover 9
Detailed Description
In order to make the objects, features and advantages of the present invention more obvious and understandable, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the embodiments described below are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it is to be understood that when an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. When a component is referred to as being "disposed on" another component, it can be directly on the other component or intervening components may also be present.
The technical scheme of the utility model is further explained by the specific implementation mode in combination with the attached drawings.
Referring to fig. 1-2, the present invention provides a wireless noise reduction earphone, including an earphone housing 4 and an earphone assembly, wherein the earphone assembly is disposed in the earphone housing 4, and the earphone housing 4 is provided with a sound outlet;
the earphone assembly comprises a main control module, a feedback microphone 2, a call microphone 6 and a feedforward microphone 5, wherein the feedback microphone 2, the call microphone 6 and the feedforward microphone 5 are electrically connected with the main control module;
the inner cavity of the earphone shell 4 comprises a first cavity, a second cavity and a third cavity, the feedback microphone 2 is arranged in the first cavity, the call microphone 6 is arranged in the second cavity, the feedforward microphone 5 is arranged in the third cavity, and the sound outlet is communicated with the first cavity;
the feed-forward microphone 5 and the call microphone 6 are used for confirming a target sound source position and feeding the target sound source position back to the main control module, and the call microphone 6 is used for picking up a target sound source signal;
the feedback microphone 2 is used for collecting noise signals in the earphone and feeding back the noise signals in the earphone to the main control module, and the feedforward microphone 5 is used for collecting noise signals outside the earphone and feeding back the noise signals outside the earphone to the main control module.
Specifically, the call microphone 6 and the feedforward microphone 5 form a dual-microphone array, the main control module adopts a beam forming algorithm to accurately calculate the speaking direction of the user, the call microphone 6 can accurately pick up the voice signal of the user, meanwhile, the interference signals of non-target sound sources in other directions are eliminated, and the microphone 6 and the feedforward microphone 5 interact to realize the environmental noise reduction of the earphone. Optionally, the speaking microphone 6 and the feedforward microphone 5 have their exit directions at a 90 degree angle.
The wireless headset of the embodiment comprises three microphones, and the feedback microphone 2, the call microphone 6 and the feedforward microphone 5 are respectively arranged in three different cavities. The microphone 6 and the feedforward microphone 5 realize environmental noise reduction, the environmental noise reduction can effectively inhibit 90% of reverse environmental noise, the maximum environmental noise can be reduced by more than 35dB, and users can communicate by voice more freely. The feedback microphone 2 and the feedforward microphone 5 achieve active noise reduction that can further remove noise that enters the earpiece by adding an anti-phase sound wave. The three microphones of the feedback microphone 2, the call microphone 6 and the feedforward microphone 5 are matched with each other to achieve the effects of active noise reduction and environmental noise reduction, the noise reduction performance of the earphone is effectively improved, and the use experience of a user is improved.
In an optional embodiment, the main control module may include a measuring device, a converting device, a filter, and an amplifier, and the main control module performs active noise reduction on the noise signals collected by the feedback microphone 2 and the feedforward microphone 5, so that the noise reduction effect is good.
In an alternative embodiment, the earphone assembly comprises a speaker unit for converting the electrical signal into an acoustic signal. The loudspeaker unit separates the first cavity from the second cavity. The earphone assembly further comprises a feedforward microphone sleeve 9 and a communication microphone sleeve 7, the feedforward microphone sleeve 9 is a third cavity, the feedforward microphone sleeve 9 contains the feedforward microphone 5, the communication microphone sleeve 7 is a second cavity, and the communication microphone sleeve 7 contains the communication microphone 6.
The loudspeaker unit in the present application may be a moving coil unit, a moving iron unit or a coil-iron mixing unit. In this embodiment, the speaker unit includes moving iron unit 8 and moving coil unit 3, and moving coil unit 3 sets up between first cavity and the second cavity. The moving-iron unit 8 and the feedback microphone 2 are arranged in the first cavity. The speaker unit may also be referred to as a horn or a speaker, and thus the moving coil unit, the moving iron unit, or the coil-iron mixing unit may also be referred to as a moving coil speaker (or called dynamic speaker), a moving iron speaker, or a coil-iron mixing speaker, respectively.
In an optional embodiment, the main control module includes an active noise reduction chip and an environmental noise reduction chip. Specifically, the active noise reduction chip is connected with the feedback microphone 2, the feedforward microphone 5 and the loudspeaking unit, and noise signals collected by the two microphones are filtered firstly, so that noise reduction signals which are equal in amplitude and opposite in phase to the noise signals are obtained, and the loudspeaking unit is specifically used for responding to the noise reduction signals to play noise reduction sound waves so as to reduce noise in the ear canal area of a user of the earphone.
The environmental noise reduction chip is respectively connected with the feedforward microphone 5 and the conversation microphone 6, positions a target sound source according to the correlation between at least two sound signals collected by the double-microphone array, strengthens a first sound signal from the direction of the target sound source and inhibits a second sound signal from the direction of a non-target sound source so as to obtain a target sound source signal.
The earphone component further comprises a circuit board, and the circuit board is electrically connected with the main control module, the feedback microphone 2, the conversation microphone 6 and the feedforward microphone 5 respectively. The earphone assembly further comprises a power supply module, and the power supply module is electrically connected with the circuit board, the main control module, the feedback microphone 2, the call microphone 6 and the feedforward microphone 5 respectively. The wireless earphone also comprises an ear cap 1, and the ear cap 1 is sleeved on the earphone shell 4 and corresponds to the sound outlet.
In summary, the wireless noise reduction earphone of the present embodiment includes an earphone assembly, and the earphone assembly includes a main control module, a feedback microphone 2, a call microphone 6, and a feedforward microphone 5. The feedforward microphone 5 and the call microphone 6 form a double-microphone array, the main control module adopts a beam forming algorithm to accurately calculate the direction of a target sound source, accurately pick up a voice signal of a user and eliminate an acoustic signal of a non-target sound source, so that active noise reduction is realized; the feedback microphone 2 and the feedforward microphone 5 are respectively electrically connected with the main control module, and the main control module converts out a reversed-phase sound wave to the loudspeaker unit, so that the environmental noise reduction is realized. The three microphones are mutually matched to achieve the effects of active noise reduction and environmental noise reduction, the noise reduction performance of the earphone is effectively improved, and the use experience of a user is improved.
The above-mentioned embodiments are only used for illustrating the technical solutions of the present invention, and not for limiting the same; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (8)
1. A wireless noise reduction earphone is characterized by comprising an earphone shell (4) and an earphone assembly, wherein the earphone assembly is arranged in the earphone shell (4), and a sound outlet is formed in the earphone shell (4);
the earphone assembly comprises a main control module, a feedback microphone (2), a call microphone (6) and a feedforward microphone (5), wherein the feedback microphone (2), the call microphone and the feedforward microphone are electrically connected with the main control module;
the inner cavity of the earphone shell (4) comprises a first cavity, a second cavity and a third cavity, the feedback microphone (2) is arranged in the first cavity, the communication microphone (6) is arranged in the second cavity, the feedforward microphone (5) is arranged in the third cavity, and the sound outlet is communicated with the first cavity;
the feed-forward microphone (5) and the call microphone (6) are used for confirming a target sound source position and feeding back the target sound source position to the main control module, and the call microphone (6) is used for picking up a target sound source signal;
the feedback microphone (2) is used for collecting noise signals in the earphone and feeding back the noise signals in the earphone to the main control module, and the feedforward microphone (5) is used for collecting noise signals outside the earphone and feeding back the noise signals outside the earphone to the main control module.
2. The wireless noise reducing headset of claim 1, wherein the headset assembly includes a speaker unit for separating the first cavity from the second cavity.
3. The wireless noise reducing headset of claim 2, further comprising a feed-forward microphone holder (9), a talking microphone holder (7), the feed-forward microphone holder (9) providing the third cavity to receive the feed-forward microphone (5), the talking microphone holder (7) providing the second cavity to receive the talking microphone (6).
4. The wireless noise reduction earphone according to claim 2, wherein the speaker unit comprises a moving-iron unit (8) and a moving-coil unit (3), the moving-coil unit (3) is disposed between the first cavity and the second cavity, and the moving-iron unit (8) and the feedback microphone (2) are disposed in the first cavity.
5. The wireless noise reduction earphone according to claim 1, wherein the outgoing directions of the talking microphone (6) and the feedforward microphone (5) are at an angle of 90 degrees.
6. The wireless noise reduction earphone according to claim 2, wherein the main control module comprises an active noise reduction chip and an ambient noise reduction chip, the active noise reduction chip is respectively connected to the feedback microphone (2), the feedforward microphone (5) and the speaker unit, and the ambient noise reduction chip is respectively connected to the feedforward microphone (5) and the conversation microphone (6).
7. The wireless noise reduction earphone according to claim 1, wherein the earphone assembly further comprises a circuit board electrically connected to the main control module, the feedback microphone (2), the conversation microphone (6) and the feedforward microphone (5), respectively.
8. The wireless noise reduction earphone according to claim 7, further comprising a power module electrically connected to the circuit board, the main control module, the feedback microphone (2), the call microphone (6), and the feedforward microphone (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120916105.7U CN215499484U (en) | 2021-04-29 | 2021-04-29 | Wireless noise reduction earphone |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120916105.7U CN215499484U (en) | 2021-04-29 | 2021-04-29 | Wireless noise reduction earphone |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215499484U true CN215499484U (en) | 2022-01-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120916105.7U Active CN215499484U (en) | 2021-04-29 | 2021-04-29 | Wireless noise reduction earphone |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215499484U (en) |
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2021
- 2021-04-29 CN CN202120916105.7U patent/CN215499484U/en active Active
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