CN210670518U

CN210670518U - Noise reduction earmuff and talkback earphone

Info

Publication number: CN210670518U
Application number: CN202020013676.5U
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: 2020-06-02
Anticipated expiration: 2030-01-03

Abstract

The utility model provides an ear muff and intercom of making an uproar fall, wherein fall the ear muff of making an uproar and include the ear muff, set up the audio processing module in the ear muff, fall the chip of making an uproar, speaker and the feedback miaow of making an uproar fall, and set up the outer feedforward miaow of making an uproar that falls in the ear muff, audio processing module and speaker are all connected in the chip of making an uproar that falls, the pronunciation audio signal of audio processing module output is exported the speaker after the chip of making an uproar falls the noise reduction, the feedback is fallen the miaow and the. The noise reduction earmuffs and the talkback earphones of the utility model respectively collect the environmental noise through the feedback noise reduction microphone and the feedforward noise reduction microphone, so that the loudspeaker generates the waveforms with the same frequency spectrum and the phases which are just opposite to each other and is superposed with the environmental noise, the noise is offset, and the noise reduction effect is good; and the wireless interphone is integrated with the noise reduction function, one-to-one or one-to-many communication can be realized, the working efficiency is improved, the wireless interphone is more suitable for being used in a high-noise environment, and the voice information communication interaction is more convenient.

Description

Noise reduction earmuff and talkback earphone

Technical Field

The utility model relates to an audio processing technology field, concretely relates to ear muff and the earphone of talkbacking of making an uproar fall.

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 an ear muff and the earphone of making an uproar falls to solve prior art's intercom 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 above object, the utility model provides an ear muff of making an uproar falls, including the ear muff, set up in audio processing module in the ear muff, fall the chip of making an uproar, speaker and the feedback miaow of making an uproar falls, and set up in the outer feedforward of ear muff falls the miaow of making an uproar, audio processing module with the speaker all connect in fall the chip of making an uproar, the voice audio signal of audio processing module output passes through fall the chip of making an uproar and fall and export after the noise reduction processing the speaker, the feedback fall the miaow with the feedforward falls the miaow and is used for gathering respectively the inside and outside noise audio signal.

As a further preferred technical scheme of the utility model, still be connected with at least one wave filter on the chip of making an uproar falls.

AS a further preferred technical scheme of the utility model, it actively falls the chip of making an uproar for AS3435 to fall the chip of making an uproar.

According to the utility model discloses a further scheme, the utility model also provides an intercom earphone, it includes any of the above-mentioned ear muff of making an uproar falls, a miaow, an antenna of talkbacking and connection the audio frequency transceiver module of antenna, the ear muff is two and connects respectively in the both ends of wearing the arm, the antenna connection is in on the audio frequency transceiver module, audio frequency transceiver module and two the audio frequency processing module of ear muff is connected respectively.

As a further preferable technical solution of the present invention, the audio transceiver module is an AM2120U wireless transceiver module.

As a further preferred technical scheme of the utility model, still be connected with the volume control module on the audio frequency transceiver module.

As a further preferred technical scheme of the utility model, the miaow of talkbacking passes through miaow support mounting and is in one of them on the earmuff, the antenna with the miaow of talkbacking is installed in same on the earmuff.

As a further preferred technical scheme of the utility model, one of them still be equipped with the battery in the ear muff and with the power management module that the battery is connected, power management module is used for two circuit board in the ear muff is connected in order to provide the electric energy.

The utility model discloses a noise reduction earmuff and an intercom earphone, wherein, the intercom earphone adopts the wireless communication technology, is convenient to wear and use, and does not need to be operated by hands; the feedback noise reduction microphone and the feedforward noise reduction microphone are used for respectively collecting the ambient noise, so that the loudspeaker generates a waveform with the same frequency spectrum and the exactly opposite phase, and the waveform and the ambient noise are superposed together, thereby canceling the noise and having good noise reduction effect; and the wireless interphone and the noise reduction function are integrated, one-to-one or one-to-many communication can be realized, the working efficiency is improved, the wireless interphone is more suitable for being used in a high-noise environment, and 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 a system block diagram of an example of noise reducing earmuffs according to the present invention;

FIG. 2 is a noise reduction schematic;

fig. 3 is a system block diagram of an example provided by the intercom earphone of the present invention.

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 an ear muff of making an uproar falls, including the ear muff, set up in audio processing module in the ear muff, fall the chip of making an uproar, speaker and the feedback miaow of making an uproar falls, and set up in the outer feedforward miaow of ear muff falls, audio processing module with the speaker all connect in fall the chip of making an uproar, the voice audio signal of audio processing module output passes through fall and fall the chip of making an uproar and fall and export after the noise reduction processing the speaker, the feedback fall the miaow with the feedforward falls the miaow and be used for gathering respectively the inside and outside noise audio signal of ear muff and.

In specific implementation, at least one filter is connected to the noise reduction chip; the noise reduction chip is an AS3435 active noise reduction chip.

The utility model discloses a principle of making an uproar falls as follows:

all sounds consist of a certain frequency spectrum which can be completely cancelled if a sound can be found which is exactly the same as the noise to be cancelled, but with exactly opposite phases (180 deg. apart). The noise reduction principle is as shown in fig. 2, active noise reduction is to sample the environmental noise (original noise signal), and then let the speaker generate the sound wave (noise suppression signal) with the same frequency spectrum as the environmental noise and with the phase opposite (180 ° difference) through electronic technology, so as to cancel the environmental noise, that is, the original noise signal and the noise suppression signal are superimposed.

The utility model discloses in, the miaow of making an uproar is fallen in the feedforward is used for gathering the ear muff external noise, the miaow of making an uproar is fallen in the feedback is used for gathering the noise that pierces through in the ear muff, it makes the speaker produce the frequency spectrum the same to fall the chip of making an uproar through calculation processing, the phase place is just opposite wave form, superpose together with ambient noise to offset the noise, the feedforward is initiatively fallen to fall and is combined the feedback initiative to mix and fall the noise, like this under the environment of high noise the user can be clear hear.

As shown in fig. 3, the utility model also provides an intercom earphone, including the noise reduction earmuff of any above-mentioned embodiment, an intercom miaow, an antenna and connect the audio frequency transceiver module of antenna, the earmuff is two and connects respectively in the both ends of wearing the arm, the antenna is connected on the audio frequency transceiver module, the audio frequency transceiver module is connected respectively with the audio frequency processing module of two earmuffs, wherein, the pronunciation that the intercom miaow picked up are transmitted to the audio frequency processing module, the audio frequency processing module carries out noise reduction processing with the pronunciation audio signal through the noise reduction chip and then exports to the speaker, the user can hear oneself to speak, simultaneously, the audio frequency processing module still exports the pronunciation audio frequency signal to the audio frequency transceiver module, sends to other intercom through the antenna by the audio frequency transceiver module; in addition, the audio frequency receiving and sending module can also receive voice audio signals sent by other talkback earphones, the voice audio signals are transmitted to the audio frequency processing module, the audio frequency processing module carries out noise reduction processing on the voice audio signals through the noise reduction chip and then outputs the voice audio signals to the loudspeaker, and a user can hear the other party.

The utility model discloses a wireless communication technique combines the initiative and falls the technique of making an uproar, falls the miaow and falls the miaow collection ambient noise respectively of making an uproar through the feedforward in inclosed ear muff the inside, and the rethread falls the chip processing of making an uproar and obtains the same opposite phase signal of frequency spectrum, superposes together in order to offset ambient noise and reach the effect of making an uproar that initiatively falls, can be used to talkback under the high noise environment, and information exchanges.

In specific implementation, the audio transceiver module is an AM2120U wireless transceiver module, so that transmission is stable, transmission distance is long, and one-to-one or one-to-many wireless transmission can be realized. The audio frequency transceiving module is also connected with a volume adjusting module which is used for adjusting the size of the talkback voice.

In specific implementation, the talkback microphone is mounted on one of the ear covers through a microphone bracket, the microphone bracket is made of flexible materials, the talkback microphone is connected and arranged in the microphone bracket, and the antenna and the talkback microphone are mounted on the same ear cover.

In the concrete implementation, still be equipped with the battery in one of them the ear muff and with the power management module that the battery is connected, power management module is used for giving two circuit board in the ear muff is connected in order to provide the electric energy, is connected with switch and electric quantity pilot lamp on the power management module.

In specific implementation, the connecting line between the two earmuffs is arranged on the head-wearing arm, such as the connecting line of the talkback microphone, the connecting line of the audio transceiver module and the connecting line of the power management module are connected to the earmuff on the other side through the head-wearing arm.

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. The utility model provides an ear muff of making an uproar falls, its characterized in that, include the ear muff, set up in audio processing module in the ear muff, fall the chip of making an uproar, speaker and feedback fall the miaow, and set up in the outer feedforward of ear muff falls the miaow, audio processing module with the speaker all connect in fall the chip of making an uproar, the pronunciation audio signal process that audio processing module output fall the chip of making an uproar fall and fall the post-processing output of making an uproar to the speaker, the feedback fall the miaow with the feedforward falls the miaow and be used for gathering respectively the inside and outside noise audio signal of ear.

2. The noise reducing earmuff of claim 1, wherein at least one filter is further coupled to the noise reducing chip.

3. The noise reducing earmuff of claim 1 or 2, wherein the noise reducing chip is an AS3435 active noise reducing chip.

4. An intercom earphone, comprising the noise reduction earmuffs of any one of claims 1 to 3, an intercom microphone, an antenna and an audio transceiver module connected to the antenna, wherein the two earmuffs are respectively connected to two ends of a head arm, the antenna is connected to the audio transceiver module, and the audio transceiver module is respectively connected to the audio processing modules of the two earmuffs.

5. The intercom earphone according to claim 4, wherein the audio transceiver module is an AM2120U wireless transceiver module.

6. The intercom earphone according to claim 4, wherein a volume adjusting module is further connected to the audio transceiver module.

7. The intercom set as in claim 4, wherein said intercom microphone is mounted on one of said ear pieces by a microphone holder, said antenna being mounted on the same said ear piece as said intercom microphone.

8. The intercom earphone according to any one of claims 4 to 7, wherein a battery and a power management module connected with the battery are further provided in one of the ear cups, and the power management module is used for connecting circuit boards in two of the ear cups to supply electric energy.