CN210781287U

CN210781287U - Wireless talkback noise reduction earphone

Info

Publication number: CN210781287U
Application number: CN202020016888.9U
Authority: CN
Inventors: 凌远秋; 陈伯兴
Original assignee: Shenzhen Aoruituo Technology Co ltd
Current assignee: Shenzhen Aoruituo Technology Co ltd
Priority date: 2020-01-03
Filing date: 2020-01-03
Publication date: 2020-06-16
Anticipated expiration: 2030-01-03

Abstract

A wireless talkback noise reduction earphone comprises a head arm, earmuffs respectively connected to two ends of the head arm, and a talkback microphone and an antenna connected to one of the earmuffs, wherein each earmuff comprises an earmuff shell, a PCBA board, a loudspeaker, a feedback noise reduction microphone and a feedforward noise reduction microphone, the PCBA board, the loudspeaker, the feedback noise reduction microphone and the feedforward noise reduction microphone are arranged on the outer side of the earmuff shell, and the loudspeaker, the feedback noise reduction microphone and the feedforward noise reduction microphone are respectively electrically connected with the PCBA board; the talkback microphone and the antenna are respectively electrically connected with the PCBA boards of the corresponding earmuffs, the PCBA boards in the two earmuffs are electrically connected through wires arranged on the head-wearing arm, and the PCBA boards are provided with noise reduction chips, so that the utility model has the advantages of no need of hand-held operation and convenient wearing and use; the feedback noise reduction microphone and the feedforward noise reduction microphone respectively collect the environmental noise, so that the loudspeakers generate the same frequency spectrum, the waveforms with the phases just opposite are superposed with the environmental noise, and the noise reduction effect is good; and can one-to-one or one-to-many communication, integrated intercom and the function of making an uproar of falling for voice information exchanges the interdynamic more conveniently.

Description

Wireless talkback noise reduction earphone

Technical Field

The utility model relates to an audio frequency processing field, concretely relates to wireless intercom noise reduction earphone.

Background

The traditional handheld interphone generally needs to be operated by hands, and the handheld interphone is very inconvenient to carry in the working process, so that a user cannot work easily and freely. In addition, the communication sound of the handheld interphone can be covered by the environmental noise in a high-noise environment, and normal conversation is difficult, for example, the sound emitted by the interphone cannot be heard normally due to overlarge noise when a large machine is maintained in a factory.

At present, bluetooth headsets with talkback function appear in the market, and have a plurality of defects in the conversation process: the transmission distance is short and is easily interfered by the outside; the transmission rate is slow; the protocol incompatibility among different devices requires local data recording to ensure that the data is available continuously; and most of bluetooth interphones do not have the function of making an uproar of falling to make normally not conversing under the high noise environment.

SUMMERY OF THE UTILITY MODEL

The utility model discloses a solve the above-mentioned problem that prior art exists, provide a wireless intercommunication and fall earphone of making an uproar to solve prior art's intercom equipment and lack the function of making an uproar, thereby can not normally speak under the high noise environment technical problem.

In order to achieve the purpose, the utility model provides a wireless talkback noise reduction earphone, which comprises a head arm, earmuffs respectively connected with two ends of the head arm, and a talkback microphone and an antenna connected with one of the earmuffs, wherein the earmuffs comprise earmuff shells, a PCBA board, a loudspeaker and a feedback noise reduction microphone which are arranged in the earmuff shells, and a feedforward noise reduction microphone which is arranged outside the earmuff shells, and the loudspeaker, the feedback noise reduction microphone and the feedforward noise reduction microphone are respectively electrically connected with the PCBA board; talkback miaow and antenna respectively with the PCBA board electric connection who corresponds the ear muff, the PCBA board in two ear muffs is through setting up the electric wire electric connection on wearing the arm, the PCBA board is equipped with and falls the chip of making an uproar.

As the utility model discloses a further preferred technical scheme, be equipped with in the earmuff casing and be located the sound chamber protecgulum and dorsal volume sound chamber back cover of the play sound side of loudspeaker, the sound chamber back cover in enclose to establish in the earmuff casing and be formed with an inner chamber, the PCBA board is located in the inner chamber.

As a further preferred technical scheme of the utility model, cover behind the sound chamber and still be equipped with the gas pocket, loudspeaker with the line of the miaow of making an uproar is fallen in the feedback passes the gas pocket is connected to on the PCBA board.

As a further preferred technical scheme of the utility model, sound chamber protecgulum on gather have a plurality ofly with the play sound hole that loudspeaker correspond, it has the sponge to go out the regional cover in sound hole place, the sponge upper cover lid has cotton gauze.

As a further preferred technical scheme of the utility model, the feedback is fallen the miaow and is inlayed and is established on the sound chamber protecgulum go out in the region of sound hole.

As a further preferred technical scheme of the utility model, the interior terminal surface of ear muff casing is equipped with the cushion that gives sound insulation.

As a further preferred technical scheme of the utility model, the miaow of talkbacking passes through flexible miaow leg joint on the earmuff casing that corresponds the ear muff.

AS a further preferred technical scheme of the utility model, it makes an uproar the chip to fall for AS3435 falls the chip of making an uproar, the wireless module that carries out wireless communication with antenna connection on the PCBA board is AM2120U module.

As a further preferred technical scheme of the utility model, wireless intercom noise reduction earphone still includes the battery, the battery set up in one of them the ear muff casing, battery and PCBA board electric connection are in order to provide the electric energy.

The utility model discloses a wireless talkback noise reduction earphone, through including wear the arm, connect respectively in the earmuff of wear arm both ends to and connect on one of them earmuff talkback miaow and antenna, the earmuff includes the earmuff casing, install in PCBA board, loudspeaker and the feedback noise reduction miaow in the earmuff casing, and install in the feedforward noise reduction miaow in the outside of earmuff casing, loudspeaker, feedback noise reduction miaow and feedforward noise reduction miaow respectively with PCBA board electric connection; the talkback microphone and the antenna are respectively electrically connected with the PCBA boards of the corresponding earmuffs, the PCBA boards in the two earmuffs are electrically connected through wires arranged on the head-wearing arm, and the PCBA boards are provided with the noise reduction chips, so that the wireless talkback noise reduction earphone of the utility model does not need to be operated by hands and is convenient to wear and use; the feedback noise reduction microphone and the feedforward noise reduction microphone respectively collect the environmental noise, so that the loudspeakers generate the same frequency spectrum, and the waveform with the exactly opposite phase is superposed with the environmental noise, thereby canceling the noise and having good noise reduction effect; in addition, one-to-one or one-to-many communication can be realized, the working efficiency is improved, and the function of the interphone is integrated, so that the voice information communication interaction is more convenient.

Drawings

The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.

Fig. 1 is the structure diagram of an example provided by the wireless intercom noise reduction earphone of the present invention.

In the figure: 1. wear arm, 2, antenna, 3, the miaow of talkbacking, 4, miaow support, 5, sound chamber protecgulum, 6, sound chamber back cover, 7, PCBA board, 8, feedforward miaow of making an uproar, 9, ear muff casing, 10, loudspeaker, 11, battery, 12, EVA glue, 13, gas pocket, 14, sponge, 15, cotton gauze.

The purpose of the present invention is to provide a novel and improved method and apparatus for operating a computer.

Detailed Description

The present invention will be further described with reference to the accompanying drawings and the detailed description. In the preferred embodiments, the terms "upper", "lower", "left", "right", "middle" and "a" are used for the sake of clarity only, and are not intended to limit the scope of the invention, its relative relationship between the terms and their derivatives, and the scope of the invention should be understood as being limited by the claims.

As shown in fig. 1, the utility model provides a wireless intercom noise reduction earphone, which comprises a head arm 1 and ear muffs respectively connected with two ends of the head arm 1, wherein the ear muffs comprise an ear muff shell 9, a PCBA plate 7, a loudspeaker 10 and a feedback noise reduction microphone installed in the ear muff shell 9, and a feedforward noise reduction microphone 8 installed outside the ear muff shell 9, and the loudspeaker 10, the feedback noise reduction microphone and the feedforward noise reduction microphone 8 are respectively electrically connected with the PCBA plate 7; the talkback microphone 3 and the antenna 2 are respectively electrically connected with PCBA boards 7 of corresponding earmuffs, the PCBA boards 7 in the two earmuffs are electrically connected through wires arranged on the head-wearing arm 1, the PCBA boards 7 are provided with noise reduction chips, the antenna 2 is fixed on an earmuff shell 9 on the right side of the head-wearing arm 1 and is connected with the talkback microphone 3 through a microphone bracket 4, and the antenna 2 can adopt a small pepper antenna 2 and is used for audio wireless transmission between talkback earphones; still be equipped with the battery 11 that provides the electric energy for PCBA board 7 and whole circuit in the earphone of talkbacking in wearing the left earmuff casing 9 of arm 1, battery 11 electric connection is on the PCBA board 7 of corresponding ear muff.

The working principle of the utility model is as follows:

the wireless talkback noise reduction earphone of the embodiment is mainly applied to a high-noise environment, in the using process, the talkback microphone 3 is used for picking up the speech sound of a wearer, the sound is transmitted to the PCBA board 7 to be correspondingly processed and then is wirelessly transmitted to other talkback earphones communicated with the PCBA board through the antenna 2, in addition, the PCBA board 7 of each earmuff is also correspondingly subjected to noise reduction processing, and the sound is played through the loudspeaker 10, so that the wearer can hear the speech of the wearer; through the local audio signal that talkbacks of antenna 2 transmission and go out and the audio signal that other talkback earphones of receipt sent out, transmit to the PCBA board 7 of two earmuffs on, PCBA board 7 carries out corresponding noise reduction and passes through loudspeaker 10 broadcast with sound, lets the person of wearing hear other people's speech to the technical problem that can't normally hear oneself or other people's speech in high noise environment has been solved.

The noise reduction principle of this embodiment: miaow 8 of making an uproar falls in feedforward is used for gathering the 9 external noises of ear muff casing, the miaow of making an uproar falls in the feedback is used for gathering the noise that pierces through in the ear muff casing 9, it makes loudspeaker 10 produce the frequency spectrum the same to fall the processing of making an uproar on the PCBA board 7, the phase place is just opposite wave form, be in the same place with the ambient noise stack, offset the noise, the feedforward is fallen the noise voluntarily and is combined the feedback initiative to mix and fall the noise promptly, like this the user also can be clear under the environment of high noise hear the sound of other side, reach the information normal transmission interaction under.

Further refer to fig. 1, be equipped with in the earmuff casing 9 and be located the sound chamber front cover 5 and dorsal sound chamber back cover 6 of the play sound side of loudspeaker 10, sound chamber back cover 6 in enclose in the earmuff casing 9 and establish and be formed with an inner chamber, PCBA board 7 is located in the inner chamber, battery 11 passes through EVA glue 12 and bonds in the inner chamber of the left earmuff casing 9 of wear arm 1. When the user wears the earphone, the earmuff shell 9 can insulate sound on the first layer of the sound cavity (the sound outlet side of the loudspeaker 10), and the rear cover 6 of the sound cavity can insulate sound on the second layer of the sound cavity, so that the sound noise of the sound outlet side of the loudspeaker 10 is reduced.

In specific implementation, the rear cover 6 of the sound cavity is further provided with an air hole 13, and a connection line between the loudspeaker 10 and the feedback noise reduction microphone passes through the air hole 13 and is connected to the PCBA board 7.

In the concrete implementation, it has a plurality of with to gather on the sound chamber protecgulum 5 the play sound hole that loudspeaker 10 corresponds, it has sponge 14 to go out the regional covering in sound hole place, the 14 upper cover of sponge has cotton gauze 15, the miaow of making an uproar inlays and establishes of making an uproar falls in the feedback on the sound chamber protecgulum 5 in the region of going out the sound hole, the interior terminal surface of earmuff casing 9 is equipped with syllable-dividing cushion to further increased the syllable-dividing effect in sound chamber, further reduced the sound promptly and made an uproar.

Preferably, the noise reduction chip is an AS3435 noise reduction chip, and the wireless module connected to the antenna 2 on the PCBA board 7 for wireless communication is an AM2120U module. The low-power AM2120U module can replace Bluetooth to transmit audio, an AS3435 noise reduction chip is adopted to process audio signals and combine a mixed noise reduction technology of feedforward and feedback, an intercom module and an active noise reduction module are integrated into an intercom noise reduction earphone, the wireless module can select various frequency bands (such AS 433.92MHz and the like), one-to-one communication can be achieved, the communication distance can reach more than 600 meters, and the wireless module is farther than Bluetooth transmission.

Although specific embodiments of the present invention have been described above, it will be appreciated by those skilled in the art that these are merely examples and that many changes and modifications may be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims.

Claims

1. A wireless talkback noise reduction earphone comprises a head arm, earmuffs respectively connected to two ends of the head arm, and a talkback microphone and an antenna connected to one of the earmuffs, and is characterized in that the earmuffs comprise earmuff shells, a PCBA board, a loudspeaker and a feedback noise reduction microphone which are arranged in the earmuff shells, and a feedforward noise reduction microphone arranged outside the earmuff shells, wherein the loudspeaker, the feedback noise reduction microphone and the feedforward noise reduction microphone are respectively electrically connected with the PCBA board; talkback miaow and antenna respectively with the PCBA board electric connection who corresponds the ear muff, the PCBA board in two ear muffs is through setting up the electric wire electric connection on wearing the arm, the PCBA board is equipped with and falls the chip of making an uproar.

2. The wireless intercom noise reducing headset of claim 1, wherein a front sound cavity cover located on the sound outlet side of the speaker and a back sound cavity cover located on the back side are disposed in the ear shell, the back sound cavity cover forms an inner cavity around the ear shell, and the PCBA board is located in the inner cavity.

3. The wireless intercom noise-reducing earphone according to claim 2, wherein an air hole is further formed in the sound cavity rear cover, and a connection line between the speaker and the feedback noise-reducing microphone passes through the air hole to be connected to the PCBA.

4. The wireless intercom noise reduction earphone according to claim 2, wherein a plurality of sound outlet holes corresponding to the speaker are densely distributed on the front cover of the sound cavity, a sponge covers the area where the sound outlet holes are located, and cotton gauze covers the sponge.

5. The wireless intercom noise reducing earphone according to claim 4, wherein the feedback noise reducing microphone is embedded in the area of the sound outlet hole on the front cover of the sound cavity.

6. The wireless intercom noise reducing headset of claim 1, wherein the inner end face of the earmuff shell is provided with a sound insulating cushion.

7. The wireless intercom noise reducing headset of claim 1, wherein the intercom microphone is attached to the earmuff housing of the corresponding earmuff by a flexible microphone bracket.

8. The wireless intercom noise-reducing earphone according to claim 1, wherein the noise-reducing chip is an AS3435 noise-reducing chip, and the wireless module connected with the antenna on the PCBA board for wireless communication is an AM2120U module.

9. The wireless intercom noise reducing headset of any one of claims 1-8, further comprising a battery disposed in one of the ear cup housings, the battery being electrically connected to the PCBA board to provide electrical power.