CN112752188A - Intelligent Bluetooth noise reduction earphone with enhanced external environment sound and enhancement method thereof - Google Patents
Intelligent Bluetooth noise reduction earphone with enhanced external environment sound and enhancement method thereof Download PDFInfo
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- CN112752188A CN112752188A CN202110148376.7A CN202110148376A CN112752188A CN 112752188 A CN112752188 A CN 112752188A CN 202110148376 A CN202110148376 A CN 202110148376A CN 112752188 A CN112752188 A CN 112752188A
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- 238000000034 method Methods 0.000 title claims abstract description 14
- 230000007613 environmental effect Effects 0.000 claims abstract description 10
- 238000004891 communication Methods 0.000 claims abstract description 5
- 230000002708 enhancing effect Effects 0.000 abstract description 8
- 230000006870 function Effects 0.000 description 5
- 230000003247 decreasing effect Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 230000005236 sound signal Effects 0.000 description 1
- 230000001629 suppression Effects 0.000 description 1
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R1/00—Details of transducers, loudspeakers or microphones
- H04R1/10—Earpieces; Attachments therefor ; Earphones; Monophonic headphones
- H04R1/1041—Mechanical or electronic switches, or control elements
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R1/00—Details of transducers, loudspeakers or microphones
- H04R1/10—Earpieces; Attachments therefor ; Earphones; Monophonic headphones
- H04R1/1083—Reduction of ambient noise
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R2430/00—Signal processing covered by H04R, not provided for in its groups
- H04R2430/01—Aspects of volume control, not necessarily automatic, in sound systems
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R2460/00—Details of hearing devices, i.e. of ear- or headphones covered by H04R1/10 or H04R5/033 but not provided for in any of their subgroups, or of hearing aids covered by H04R25/00 but not provided for in any of its subgroups
- H04R2460/01—Hearing devices using active noise cancellation
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- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Soundproofing, Sound Blocking, And Sound Damping (AREA)
Abstract
The invention relates to the technical field of Bluetooth earphones, in particular to an intelligent Bluetooth noise reduction earphone for enhancing external environment sound and an enhancing method thereof, wherein the intelligent Bluetooth noise reduction earphone comprises a connecting wire, a PCB (printed circuit board) and two earphone units, wherein the PCB connects the two earphone units through the connecting wire, and the intelligent Bluetooth noise reduction earphone is characterized in that: the sound volume control device is characterized by also comprising a control box, wherein the PCB is arranged in the control box and is provided with a microphone module, a controller, a volume plus-minus key and an environmental sound plus-minus key; a loudspeaker is arranged in the earphone unit; the noise reduction module is used for reducing noise, and the Bluetooth module is used for wireless communication; the microphone module, the volume plus-minus key, the environment sound plus-minus key, the loudspeaker, the noise reduction module and the Bluetooth module are all in electric signal connection with the controller. The intelligent Bluetooth noise reduction earphone for enhancing the external environment sound and the enhancing method thereof provide a switching structure foundation under different scenes, are convenient for users to switch between scenes needing noise reduction and scenes needing to receive the environment sound, and are convenient to use.
Description
Technical Field
The invention relates to the technical field of Bluetooth earphones, in particular to an intelligent Bluetooth noise reduction earphone capable of enhancing external environment sound and an enhancing method thereof.
Background
The Bluetooth headset can realize efficient data transmission among different devices in a short distance, and after a newly-handed standard detonates a Bluetooth market, the high-end, middle-end and low-end markets of the Bluetooth headset are started in a full line. The technology promotion of chip companies such as high-pass and Touda is benefited, and the rapid popularization of Bluetooth brands at home and abroad is not successful. Meanwhile, with the progress of technology, the consumption of the Bluetooth headset keeps a higher growth rate due to the continuous refinement of Bluetooth headset products, and the market retention rate of the Bluetooth headset is very high in many developed countries such as Europe and America.
The existing Bluetooth noise reduction earphone generally has a better noise reduction function, but when a user needs to receive ambient sound, the Bluetooth noise reduction earphone can only be taken down from an ear, and for a special user who needs to frequently switch between noise reduction and ambient sound pickup, the traditional noise reduction Bluetooth earphone is not pure in the switching structure foundation.
Disclosure of Invention
The invention aims to provide an intelligent Bluetooth noise reduction earphone for enhancing external environment sound and an enhancing method thereof aiming at the defects of the prior art.
In order to achieve the purpose, the intelligent Bluetooth noise reduction earphone with enhanced external environment sound comprises a connecting wire, a PCB and two earphone units, wherein the two earphone units are connected by the PCB through the connecting wire, and the intelligent Bluetooth noise reduction earphone is characterized in that: the sound volume control device is characterized by also comprising a control box, wherein the PCB is arranged in the control box and is provided with a microphone module, a controller, a volume plus-minus key and an environmental sound plus-minus key; a loudspeaker is arranged in the earphone unit; a power supply assembly for supplying power, a noise reduction module for reducing noise and a Bluetooth module for wireless communication are also arranged in the control box; the microphone module, the volume plus-minus key, the ambient sound plus-minus key, the loudspeaker, the noise reduction module and the Bluetooth module are all in electric signal connection with the controller; the earphone unit comprises an earphone shell, the earphone shell is provided with an independent sound guide tube cavity, and the loudspeaker is positioned in the independent sound guide tube cavity; the earphone shell is provided with a front shell, a rear shell and a tube body, the tube body is installed on the front shell, an annular tube portion is formed in the protruding mode of the end, deviating from the tube body, of the front shell towards the direction of the rear shell, and the independent sound conducting tube cavity is located in the annular tube portion.
Furthermore, the power supply assembly comprises a battery and a USB charging interface, and the USB charging interface and the battery are electrically connected with the PCB.
Furthermore, the control box is also provided with a waterproof and dustproof plug for plugging the USB charging interface.
Furthermore, the sound leakage hole is formed in the front shell and communicated with the independent sound guide tube cavity.
In order to further achieve the above object, the method for noise-reducing an intelligent bluetooth headset according to the present invention, which uses any one of the above noise-reducing intelligent bluetooth headsets, includes the following steps:
A. the controller comprises a processor unit and a memory unit, wherein the memory unit prestores a level division instruction of the volume of the environmental sound, and the processor unit divides the volume into 1-6 levels from low to high; B. the memory unit also stores noise reduction commands matched with 4-6 levels of sound volume, and the noise reduction commands are respectively the noise reduction levels of +1, +2 and + 3; b, the processor unit executes a noise reduction instruction of a corresponding noise reduction level according to the volume level determined in the step A; C. the processor unit reduces the level of the executed noise reduction instruction according to the electric signal generated by pressing the increasing key of the ambient sound adding and subtracting key, reduces the noise reduction level and realizes the enhancement of the ambient sound; when the currently executed noise reduction level is +1 and the increase key is continuously pressed to generate an electric signal, the processor closes the noise reduction module, and simultaneously amplifies the ambient sound picked up by the microphone and plays the amplified ambient sound through the loudspeaker to further enhance the ambient sound.
Further, in the method for intelligently reducing noise of a bluetooth noise reduction earphone of the invention, in the step C, the ambient sound picked up by the microphone is amplified and divided into 3 levels, and the corresponding level of the environmental noise is selected according to the electric signal generated by pressing the increase key of the ambient sound add-decrease key.
The invention has the beneficial effects that: the intelligent Bluetooth noise reduction earphone with enhanced external environment sound provides a switching structure foundation under different scenes, is convenient for a user to switch between scenes needing noise reduction and scenes needing to receive environment sound, and is convenient to use.
Drawings
Fig. 1 is a schematic perspective view of an external environment sound enhanced intelligent bluetooth noise reduction earphone according to the present invention.
Fig. 2 is a schematic cross-sectional structure view of the earphone housing of the present invention.
Fig. 3 is a schematic cross-sectional structure diagram of the earphone housing.
The reference numerals include:
1-connecting wire 2-earphone unit 3-control box
4-volume plus-minus key 5-environment sound plus-minus key
6-waterproof and dustproof plug
7-earphone housing 71-front housing 72-rear housing 73-tube 74-annular tube portion
8-independent sound guide tube cavity.
Detailed Description
The present invention is described in detail below with reference to the attached drawings.
As shown in fig. 1-3, the intelligent bluetooth noise reduction earphone with enhanced external environment sound of the present invention comprises a connecting line 1, a PCB board and two earphone units 2, wherein the PCB board connects the two earphone units 2 via the connecting line 1, and is characterized in that: the voice-activated sound control device is characterized by further comprising a control box 3, wherein the PCB is arranged in the control box 3 and is provided with a microphone module, a controller, a volume increasing and decreasing button 4 and an environmental sound increasing and decreasing button 5; a loudspeaker is arranged in the earphone unit 2; the control box 3 is also internally provided with a power supply assembly for supplying power, a noise reduction module for reducing noise and a Bluetooth module for wireless communication; the microphone module, the volume plus-minus key 4, the environment sound plus-minus key 5, the loudspeaker, the noise reduction module and the Bluetooth module are all connected with the controller through electric signals. According to the intelligent Bluetooth noise reduction earphone with enhanced external environment sound, the volume adding and subtracting button 4 is used for adjusting sound played by the loudspeaker, the environment sound picked up by the microphone module is processed by the audio module and then played by the loudspeaker, the volume of the environment sound played by the loudspeaker can be adjusted to be high or low through the environment sound adding and subtracting button 5, and specifically, the PCB is provided with an amplifier which can amplify environment sound signals; the intelligent Bluetooth noise reduction earphone with enhanced external environment sound provides a switching structure foundation under different scenes, is convenient for a user to switch between scenes needing noise reduction and scenes needing to receive environment sound, and is convenient to use.
According to the intelligent Bluetooth noise reduction earphone with enhanced external environment sound, the earphone unit 2 comprises an earphone shell 7, the earphone shell 7 is provided with an independent sound guide tube cavity 8, and a loudspeaker is positioned in the independent sound guide tube cavity 8; the earphone shell 7 is provided with a front shell 71, a rear shell 72 and a tube 73, the tube 73 is installed on the front shell 71, one end of the front shell 71, which is far away from the tube 73, protrudes towards the direction of the rear shell 72 to form an annular tube portion 74, and the independent sound conducting tube cavity 8 is located on the annular tube portion 74.
According to the intelligent Bluetooth noise reduction earphone with enhanced external environment sound, the independent sound guide tube cavity 8 enlarges the frequency response range of the loudspeaker and improves the sound quality.
Furthermore, the power supply assembly comprises a battery and a USB charging interface, and the USB charging interface and the battery are electrically connected with the PCB. According to the intelligent Bluetooth noise reduction earphone with enhanced external environment sound, disclosed by the invention, the battery is charged through the USB charging interface.
Further, the control box 3 is also provided with a waterproof and dustproof plug 6 for plugging a USB charging interface. The intelligent Bluetooth noise reduction earphone with enhanced external environment sound improves the use performance.
Further, the sound leakage hole is formed in the front shell 71 and communicated with the independent sound guide tube cavity 8. The intelligent Bluetooth noise reduction earphone with enhanced external environment sound is characterized in that a hardware platform based on a high-pass chip 3034+ ADI 1777C is adopted, a Bluetooth 5.2 wireless sound transmission technology is adopted, an independent loudspeaker sound cavity is combined, Bluetooth music playing and call receiving and calling functions, a high noise suppression function and an environment sound pickup function are realized, the environment sound pickup level is set to 6, the environment sound pickup level is favorable for a user to better hear surrounding environment sound, and the product is also provided with a high-pass CVC (composite video communication) call noise reduction function, so that good call quality can be provided even in a noisy environment; meanwhile, the design of a 7-level waterproof structure is adopted, so that the waterproof structure can be normally used in any environment.
In order to further achieve the above object, the method for noise-reducing an intelligent bluetooth headset according to the present invention, which uses any one of the above noise-reducing intelligent bluetooth headsets, includes the following steps:
A. the controller comprises a processor unit and a memory unit, wherein the memory unit prestores a level division instruction of the volume of the environmental sound, and the processor unit divides the volume into 1-6 levels from low to high; B. the memory unit also stores noise reduction commands matched with 4-6 levels of sound volume, and the noise reduction commands are respectively the noise reduction levels of +1, +2 and + 3; b, the processor unit executes a noise reduction instruction of a corresponding noise reduction level according to the volume level determined in the step A; C. the processor unit reduces the level of the executed noise reduction instruction according to the electric signal generated by pressing the increasing key of the ambient sound adding and subtracting key 5, reduces the noise reduction level and realizes the enhancement of the ambient sound; when the currently executed noise reduction level is +1 and the increase key is continuously pressed to generate an electric signal, the processor closes the noise reduction module, and simultaneously amplifies the ambient sound picked up by the microphone and plays the amplified ambient sound through the loudspeaker to further enhance the ambient sound. The intelligent Bluetooth noise reduction earphone method of the intelligent Bluetooth noise reduction earphone is convenient for a user to switch between scenes needing noise reduction and scenes needing to receive environmental sound.
Further, in the method for intelligently reducing the noise of the intelligent bluetooth noise reduction earphone of the invention, in the step C, the ambient sound picked up by the microphone is amplified and divided into 3 levels, and the corresponding level of the environmental noise is selected according to the electric signal generated by pressing the increasing key of the ambient sound increasing and decreasing key 5.
In conclusion, the present invention has the above-mentioned excellent characteristics, so that it can be used to enhance the performance of the prior art and has practicability, and becomes a product with practical value.
The above description is only a preferred embodiment of the present invention, and for those skilled in the art, the present invention should not be limited by the description of the present invention, which should be interpreted as a limitation.
Claims (6)
1. The intelligent Bluetooth noise reduction earphone with enhanced external environment sound comprises a connecting wire, a PCB (printed circuit board) and two earphone units, wherein the PCB is connected with the two earphone units through the connecting wire, and the intelligent Bluetooth noise reduction earphone is characterized in that: the sound volume control device is characterized by also comprising a control box, wherein the PCB is arranged in the control box and is provided with a microphone module, a controller, a volume plus-minus key and an environmental sound plus-minus key; a loudspeaker is arranged in the earphone unit; a power supply assembly for supplying power, a noise reduction module for reducing noise and a Bluetooth module for wireless communication are also arranged in the control box; the microphone module, the volume plus-minus key, the ambient sound plus-minus key, the loudspeaker, the noise reduction module and the Bluetooth module are all in electric signal connection with the controller;
the earphone unit comprises an earphone shell, the earphone shell is provided with an independent sound guide tube cavity, and the loudspeaker is positioned in the independent sound guide tube cavity; the earphone shell is provided with a front shell, a rear shell and a tube body, the tube body is installed on the front shell, an annular tube portion is formed in the protruding mode of the end, deviating from the tube body, of the front shell towards the direction of the rear shell, and the independent sound conducting tube cavity is located in the annular tube portion.
2. The ambient sound enhanced smart bluetooth noise reducing headset of claim 1, wherein: the power supply assembly comprises a battery and a USB charging interface, and the USB charging interface and the battery are both electrically connected with the PCB.
3. The ambient sound enhanced smart bluetooth noise reducing headset of claim 2, wherein: the control box is also provided with a waterproof and dustproof plug for plugging the USB charging interface.
4. The ambient sound enhanced smart bluetooth noise reducing headset of claim 1, wherein: the sound leakage hole is positioned in the front shell and communicated with the independent sound guide tube cavity.
5. The intelligent Bluetooth noise reduction earphone method of the intelligent Bluetooth noise reduction earphone is characterized in that the intelligent Bluetooth noise reduction earphone is used, and the method comprises the following steps:
A. the controller comprises a processor unit and a memory unit, wherein the memory unit prestores a level division instruction of the volume of the environmental sound, and the processor unit divides the volume into 1-6 levels from low to high;
B. the memory unit also stores noise reduction commands matched with 4-6 levels of sound volume, and the noise reduction commands are respectively the noise reduction levels of +1, +2 and + 3; b, the processor unit executes a noise reduction instruction of a corresponding noise reduction level according to the volume level determined in the step A;
C. the processor unit reduces the level of the executed noise reduction instruction according to the electric signal generated by pressing the increasing key of the ambient sound adding and subtracting key, reduces the noise reduction level and realizes the enhancement of the ambient sound; when the currently executed noise reduction level is +1 and the increase key is continuously pressed to generate an electric signal, the processor closes the noise reduction module, and simultaneously amplifies the ambient sound picked up by the microphone and plays the amplified ambient sound through the loudspeaker to further enhance the ambient sound.
6. The method as claimed in claim 5, wherein in the step C, the ambient sound picked up by the microphone is amplified and divided into 3 levels, and the corresponding level of the strong ambient noise is selected according to the electrical signal generated by pressing the increase key of the ambient sound add-subtract key.
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Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN115086476A (en) * | 2022-04-26 | 2022-09-20 | 北京达佳互联信息技术有限公司 | Multimedia playing adjusting method and device, electronic equipment and storage medium |
Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20150105117A1 (en) * | 2013-10-15 | 2015-04-16 | Twisted Pair Solutions, Inc. | Pulsed input push-to-talk wireless adapter systems and methods |
CN204929259U (en) * | 2015-07-28 | 2015-12-30 | 深圳市冠旭电子有限公司 | Debugging device of making an uproar falls in bluetooth headset |
CN207166703U (en) * | 2017-08-08 | 2018-03-30 | 东莞市奥声电子科技有限公司 | It is a kind of can Voice command bluetooth earphone |
US20180167715A1 (en) * | 2016-12-13 | 2018-06-14 | Onvocal, Inc. | Headset mode selection |
CN208299975U (en) * | 2018-04-23 | 2018-12-28 | 北京小鸟听听科技有限公司 | A kind of neck headset |
CN208908482U (en) * | 2018-06-19 | 2019-05-28 | 美特科技(苏州)有限公司 | The earphone of adjustable noise reduction |
CN210112225U (en) * | 2019-03-13 | 2020-02-21 | 东莞市乐莱电子有限公司 | Bluetooth wireless sharing system and Bluetooth wireless sharing earphone thereof |
-
2021
- 2021-02-03 CN CN202110148376.7A patent/CN112752188A/en active Pending
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20150105117A1 (en) * | 2013-10-15 | 2015-04-16 | Twisted Pair Solutions, Inc. | Pulsed input push-to-talk wireless adapter systems and methods |
CN204929259U (en) * | 2015-07-28 | 2015-12-30 | 深圳市冠旭电子有限公司 | Debugging device of making an uproar falls in bluetooth headset |
US20180167715A1 (en) * | 2016-12-13 | 2018-06-14 | Onvocal, Inc. | Headset mode selection |
CN207166703U (en) * | 2017-08-08 | 2018-03-30 | 东莞市奥声电子科技有限公司 | It is a kind of can Voice command bluetooth earphone |
CN208299975U (en) * | 2018-04-23 | 2018-12-28 | 北京小鸟听听科技有限公司 | A kind of neck headset |
CN208908482U (en) * | 2018-06-19 | 2019-05-28 | 美特科技(苏州)有限公司 | The earphone of adjustable noise reduction |
CN210112225U (en) * | 2019-03-13 | 2020-02-21 | 东莞市乐莱电子有限公司 | Bluetooth wireless sharing system and Bluetooth wireless sharing earphone thereof |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN115086476A (en) * | 2022-04-26 | 2022-09-20 | 北京达佳互联信息技术有限公司 | Multimedia playing adjusting method and device, electronic equipment and storage medium |
CN115086476B (en) * | 2022-04-26 | 2024-06-25 | 北京达佳互联信息技术有限公司 | Multimedia play adjusting method and device, electronic equipment and storage medium |
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