CN206728239U - A kind of multi-functional noise reduction communication earphone - Google Patents
A kind of multi-functional noise reduction communication earphone Download PDFInfo
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- CN206728239U CN206728239U CN201720272640.7U CN201720272640U CN206728239U CN 206728239 U CN206728239 U CN 206728239U CN 201720272640 U CN201720272640 U CN 201720272640U CN 206728239 U CN206728239 U CN 206728239U
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Abstract
It the utility model is related to a kind of multi-functional noise reduction communication earphone.Including：One main control part, there is model selection and sound control unit, the driver element and display unit of logic control of control left and right loudspeaker；Transmitter module, it is connected with main control part, including phaselocked loop and voltage controlled oscillator and antenna；Receiving module, it is connected with main control part, including transmitting-receiving change-over circuit, bandpass filter, crystal filter, IF process chip, ceramic filter；Audio playing module, connect model selection and sound control unit and the driver element of logic control of main control part；Sound pick-up, it is connected to by bandpass filter frequency-selecting and two-way amplifier on the loudspeaker of left and right.This earphone has common decrease of noise functions and intercom, radio, audio playing function, the long-range accessible exchange in noisy environment can be realized, the hearing health of staff in noise circumstance can also be further ensured that by obstructing the outside pulse signal caused by sharp noise that happens suddenly, and with certain recreational.
Description
Technical field
Electronic communication product technical field is the utility model is related to, refers in particular to a kind of multi-functional noise reduction communication earphone.
Background technology
At present, the personnel for working or living in high-noise environment, to suppress the stimulation and interference of noise, mostly use
A common passive noise cancelling headphone of wear-type is put on, to stop that isolation external sound is passed to ear-drum, though this is to suppressing and filtering is made an uproar
Sound plays suitable effect really, still, while stopping ambient noise in aforementioned manners, has also isolated all including Conversation Voice
Effective sound inside, so that being exchanged as normal talk can not be carried out.Then have and screening sound can be achieved, reach reservation
Effective sound including Conversation Voice is passed to the noise cancelling headphone of ear-drum, to meet also carry out positive platitude in high-noise environment
Words exchange, convenient work and activity.However, existing noise cancelling headphone, is only capable of carrying out talk exchange closely, it is impossible to meet noise
Exchange in the case of miscellaneous workshop distance is slightly remote, and Dolby circuit structure is complex, so that earphone cost of manufacture is high, work(
Can be more single, only with decrease of noise functions, virtually cause the wasting of resources.
This patent overall reference China 201020610281.X patent applications herein, entitled Multifunctional noise-reducing headphone
Utility model.
Utility model content
The utility model purpose is that providing one kind both has decrease of noise functions, also broadcasts with intercom, radio and audio
The Multifunctional noise-reducing headphone of playing function.
This patent overall reference China 201020610281.X patent applications herein, entitled Multifunctional noise-reducing headphone
Utility model.
The utility model a further object is to provide a kind of simple in construction, and scientific and reasonable, cost of investment is low, and operation operation is easy
Multi-functional noise reduction communication earphone.
To reach above-mentioned purpose, the utility model adopts the following technical scheme that：
Multi-functional noise reduction communication earphone, including：
One main control part, have audio output model selection and sound control unit, logic control driver element and
Display unit；
One transmitter module, is connected with main control part, including phaselocked loop and voltage controlled oscillator and antenna；
One receiving module, is connected with main control part, including transmitting-receiving change-over circuit, bandpass filter, crystal filter, intermediate frequency
Process chip, ceramic filter；
One audio playing module, audio playing module also connect the model selection of main control part and sound control unit and patrolled
Collect the driver element of control；
One sound pick-up, it is connected to by bandpass filter and two-way amplifier on the loudspeaker of left and right.
In such scheme, further design is：In the output end of bandpass filter, one automatic gain and pulse noise are set
The input of controller, the automatic gain and pulse noise controller feedback access bandpass filter.
In such scheme, further design is：The left and right loudspeaker is also associated with external AUX sockets, AUX sockets
Connection mode selects and sound control unit.
Receiving module receive at the same time it is multigroup possess communication frequency signal when, according to previously selected frequency order,
Priority treatment is in the signal of priority level.
Earphone provided by the utility model, it is on the basis of common noise cancelling headphone, increase has communication part, radio
Part and audio playing module, and Dolby circuit structure is optimized, sound pick-up is connected by bandpass filter and two-way amplifier
It is connected on the loudspeaker of left and right, is derived from following beneficial effect：
1st, under normal circumstances, extraneous sound is sent to bandpass filter after microphone pickup, and it is unwanted to filter out some
Sound, retain the voice of people, then be sent into after two-way amplifier is amplified to sound on the loudspeaker of left and right, so as to protect
Communicating with each other between witness person, reaching prevents from stimulating and disturbs, and protects ear, meets to work in high-noise environment or raw
Normal talk living needs.
2nd, transmitter module and receiving module are utilized, there is provided remote communicating function, can meet in whole plant floor even
Communication need between different plant floors, production efficiency can be effectively improved, avoided because loss caused by communication not in time.
3rd, by preselecting frequency, priority treatment is in the signal of priority level.Notified so as to be sent in such as main frame
During information, other signals (such as AUX_IN, radio) handled can be interrupted, so that it is guaranteed that the notice from main frame is just
Often receive.
4th, using receiving module and audio playing module, FM/AM signals, and audio playback signal can be received, reaches joy
Happy effect, increase product is multi-functional, lifts cost performance.
5th, in the case where there is large amplitude noise, now automatic gain set in circuit and pulse noise controller be just
It can act, decay suppression is carried out to noise, so as to play a part of protecting human ear.
6th, in the case of the poop noise to arrive when external environment has burst, pulse noise controller energy moment turns off amplification
The input of device, barrier poop noise are transported to left and right loudspeaker by amplifier, are exempted from sharply so as to play protection human ear
The injury (such as report of a gun) of pulse noise.
7th, the utility model can also connect extraneous musical instruments by AUX sockets, can appreciate beautiful stereo music.
8th, simple in construction, scientific and reasonable, cost of investment is low, and operation operation is easy, substantially increase earphone operation ratio and
Operability, meet the design concept of industrial upgrading and optimization, there is high cost performance and the market competitiveness.
Brief description of the drawings
Accompanying drawing 1 is the utility model general block schematic diagram；
Accompanying drawing 2 is the utility model communication function schematic diagram.
Specific embodiment
The utility model is further illustrated below in conjunction with accompanying drawing：
Refering to Fig. 1, Fig. 2 and 201020610281.X utility model patents, multi-functional drop provided by the utility model
Make an uproar earphone, including：
One main control part 10, there is model selection and sound control unit 11, the driver element 12 of logic control and display
Unit 13, model selection and sound control unit 11 control a pair or so loudspeakers 14；Main control part 10 is further equipped with power supply, side
Portable belt uses, and especially meets outdoor use.Model selection and sound control unit 11 realize that the patten transformation on earphone is adjusted
It is whole, and the sound to being transported on left and right loudspeaker 14 regulates and controls；The driver element 12 and display unit 13 of logic control are real
Now different mode condition regulation is shown.
One transmitter module 9, is connected with main control part 10, including phaselocked loop and voltage controlled oscillator and antenna, passes through master control
Part 40 produces the voice signal that sound pick-up 40 treats by phaselocked loop and voltage controlled oscillator (VCO) processing the radio frequency of transmitting
Carrier signal, amplify by signal, power amplification, reach specified radio-frequency power, by radio-frequency filter, suppress harmonic wave into
Point, then launched by antenna.
One receiving module, is connected with main control part, including transmitting-receiving change-over circuit, bandpass filter, crystal filter, intermediate frequency
Process chip, ceramic filter.Receiving portion is double superheterodyne mode, is changed from the signal of antenna input by transmitting-receiving
Radio frequency amplification is carried out after circuit and bandpass filter, by bandpass filter, into a mixing, the amplification from radio frequency is believed
Number it is mixed with the first local oscillation signal from phase-locked loop frequency synthesizer circuit at the first frequency mixer and generates the first intermediate frequency letter
Number.First intermediate-freuqncy signal further eliminates the noise signal of neighboring trace by crystal filter.Filtered first intermediate-freuqncy signal is entered
Enter IF process chip, be mixed the second intermediate-freuqncy signal of generation again with the second local oscillation signal, the second intermediate-freuqncy signal passes through a pottery
After porcelain wave filter filters out useless spurious signal, exaggerated and frequency discrimination, audio signal is produced.Audio signal is filtered by amplification, band logical
Ripple device, the circuit such as postemphasis, and amplifies into volume control circuit and power amplifier, drive the speaker, obtains needed for people
Information.Receiving module is in addition to receiving the signal of other earphone transmittings, moreover it is possible to receives common FM/AM signals and has radio reception concurrently
The function of machine, voice signal is sent on left and right loudspeaker 14 by model selection and sound control unit 11, logic control
Driver element 12 gives driving display.
One audio playing module, has audio playing module 30, and audio playing module 30 also connects the pattern of main control part
Selection and sound control unit 11 and the driver element of logic control 12；Audio playing module has storage and playing function, can
Beautiful music is provided in good time.
One sound pick-up 40, is connected on left and right loudspeaker 14 by bandpass filter 50 and two-way amplifier 60；In band logical
The output end of wave filter 50 sets an automatic gain and pulse noise controller 70, the automatic gain and pulse noise controller 70
The input of feedback access bandpass filter 50.Extraneous sound is sent to bandpass filter 50 after the pickup of sound pick-up 40, filters out
Some unwanted sound, retain the voice of people, then be sent into left and right after two-way amplifier 60 is amplified to sound and raise
On sound device 14, so as to communicating with each other between guarantee personnel, reaching prevents from stimulating and disturbs, and protects ear, meets in strong noise
Work or live normal needs of talking in environment.Automatic gain and pulse noise controller 70 can have large amplitude noise
In the case of make action, decay suppression is carried out to noise, so as to play a part of protect human ear；In the sharp arteries and veins for having burst and arriving
Rush in the case of noise, pulse noise controller energy moment turns off the input of amplifier, and barrier poop noise passes through amplification
Device is transported to left and right loudspeaker, so as to play the injury (such as report of a gun) that protection human ear exempts from poop noise.
In the present embodiment, in left and right, loudspeaker 14 is also associated with external AUX sockets 80, can be connected by AUX sockets 80
Extraneous musical instruments, to appreciate beautiful stereo music.AUX sockets 80 also connection mode selection and sound control unit
11, when audio plays and AM/FM is in off position (POWER OFF), if insertion AUX sockets 80, display unit
13 LCD can show " AUX ", and automatically switch to AUX mode of operations；When audio plays and AM/FM is in mode of operation, if
Inserting AUX sockets 80, then model selection and sound control unit 11 can turn off audio broadcasting or AM/FM and be switched to AUX patterns,
The LCD of display unit 13 can show " AUX " simultaneously.
Referring to 201020610281.X utility model patents, automatic gain and pulse noise controller 70 include one
Metal-oxide-semiconductor FET1 (SI2302), resistance R64, electric capacity C54 and double diode D2 (MMBD4148SE), metal-oxide-semiconductor FET1's (SI2302)
One end is connected on the input of bandpass filter 50, and bandpass filter 50 is sent to after the extraneous sound of sound pick-up 40 (MIC) pickup.When
When noise is larger, noise signal turns on double diode D2, and obtaining a DC level through C54 filtering starts metal-oxide-semiconductor FET1
Into working condition, certain impedance just be present between metal-oxide-semiconductor FET1 DS both ends, so as to drag down the input of bandpass filter 50
Voltage, the acoustic pressure control of last loudspeaker output is played protection human ear and is exempted from injury in below 82dB；When external environment has burst
And in the case of the poop noise to arrive, pulse noise can make metal-oxide-semiconductor FET1 moments be in saturation state, make metal-oxide-semiconductor FET1's
Impedance between DS both ends is almost nil, plays a part of moment and turns off amplifier, so as to obstruct poop noise by putting
Big device is transported to left and right loudspeaker, so as to play the injury that protection human ear exempts from poop noise.Bandpass filter 50 is then used for
Noise and effective sound are distinguished, helps to filter out some unwanted sound, retains the voice of people, then by two-way amplifier
60 pairs of sound are sent on left and right loudspeaker 14 after being amplified, and so as to communicating with each other between guarantee personnel, reaching prevents from stimulating
And interference, ear is protected, meets the normal talk needs that work or live in high-noise environment.When the external world has large amplitude to make an uproar
In the case of sound and the pulse noise for happening suddenly and arriving, set automatic gain and pulse noise controller 70 will move in circuit
Make (double diode D2, metal-oxide-semiconductor FET1, electric capacity C54, resistance R64 collective effects), the input of bandpass filter 50 is pressed down
System, large amplitude noise and impulsive noise is stopped input bandpass filter 50, reach and noise is suppressed, so as to play protection
The effect of human ear.After the pulse noise past that large amplitude noise and burst arrive, electric capacity C54 electric charge is just put through R64
Electricity, 250 milliseconds or so the completions that can discharge, metal-oxide-semiconductor FET1 just resume work, and sound pick-up 40 (MIC) picks up the sound in the external world again
After be sent to bandpass filter 50, finally after two-way amplifier 60 is amplified to sound be sent into left and right loudspeaker 14 on, reach
Required to normal talk.
Referring to Fig. 2, when in transmit mode, in the communication earphone of this patent, treated sound wave, as input
Acoustic signals are sent into encoded signal generator, and the place through overmodulated circuit together of high frequency carrier caused by oscillating circuit (local oscillator)
Reason, generate modulated signal.Then, modulated signal first carries out signal amplification, then amplifies by high frequency power, is passed by transmitting antenna
Send.
When in receptive pattern, in the communication earphone of this patent, reception antenna receives the radio of predetermined frequency
Ripple, after High frequency amplification, into frequency-conversion circuit, in frequency transformation, by carrier oscillation circuit by high-frequency signal
It is converted into intermediate-freuqncy signal.Intermediate-freuqncy signal is sent into demodulator circuit, decoding circuit is sent into after processing after amplifying circuit, last profit
Sound wave is exported with loudspeaker etc..
In the utility model patent, communication can occur between exchange and earphone, and occur between earphone.So as to
One-to-many or man-to-man communication can be realized.Man-to-man communication can possess specific frequency by giving predetermined earphone
Rate, so as to realize One-to-one communication.
No matter under what circumstances, wireless signal of the preferential processing of earphone from exchange.
The utility model realizes communication function on the basis of decrease of noise functions and possesses radio and audio broadcasting work(
Can, so as in the environment fixed in noisy, crowd, reach noise reduction, communication, amusement it is multi-functional, and cost is cheap.
Claims (4)
- A kind of 1. multi-functional noise reduction communication earphone, it is characterised in that：IncludingOne main control part, there is model selection and sound control unit, the driver element of the logic control and display of audio output Unit；One transmitter module, is connected with main control part, including phaselocked loop and voltage controlled oscillator and antenna；One receiving module, is connected with main control part, including transmitting-receiving change-over circuit, high frequency small-signal amplification, bandpass filter, crystal Wave filter, IF process chip；One audio playing module, audio playing module also connect the model selection and sound control unit and logic control of main control part The driver element of system；One sound pick-up, by bandpass filter frequency-selecting and then it is coupled to two-way amplifier, recently enters on the loudspeaker of left and right.
- 2. multi-functional noise reduction communication earphone according to claim 1, it is characterised in that：Set in the output end of bandpass filter An automatic gain and pulse noise controller are put, the automatic gain and pulse noise controller feedback access the defeated of bandpass filter Enter end.
- 3. multi-functional noise reduction communication earphone according to claim 1, it is characterised in that：The left and right loudspeaker is also associated with External AUX sockets, AUX sockets also connection mode selection and sound control unit.
- 4. multi-functional noise reduction communication earphone according to claim 1, it is characterised in that：Receiving module receives more at the same time When group possesses the signal of communication frequency, according to default frequency order, priority treatment is in the signal of priority level.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720272640.7U CN206728239U (en) | 2017-03-20 | 2017-03-20 | A kind of multi-functional noise reduction communication earphone |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720272640.7U CN206728239U (en) | 2017-03-20 | 2017-03-20 | A kind of multi-functional noise reduction communication earphone |
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| Publication Number | Publication Date |
|---|---|
| CN206728239U true CN206728239U (en) | 2017-12-08 |
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| CN201720272640.7U Active CN206728239U (en) | 2017-03-20 | 2017-03-20 | A kind of multi-functional noise reduction communication earphone |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108391193A (en) * | 2018-05-24 | 2018-08-10 | 东莞市猎声电子科技有限公司 | A kind of New intellectual earphone |
| CN109089184A (en) * | 2018-03-28 | 2018-12-25 | 广州市神火科技有限公司 | A kind of wear-type pickup noise reduction communication earphone |
-
2017
- 2017-03-20 CN CN201720272640.7U patent/CN206728239U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109089184A (en) * | 2018-03-28 | 2018-12-25 | 广州市神火科技有限公司 | A kind of wear-type pickup noise reduction communication earphone |
| CN108391193A (en) * | 2018-05-24 | 2018-08-10 | 东莞市猎声电子科技有限公司 | A kind of New intellectual earphone |
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