CN109672949A - A kind of active noise reduction call earplug - Google Patents
A kind of active noise reduction call earplug Download PDFInfo
- Publication number
- CN109672949A CN109672949A CN201710959214.5A CN201710959214A CN109672949A CN 109672949 A CN109672949 A CN 109672949A CN 201710959214 A CN201710959214 A CN 201710959214A CN 109672949 A CN109672949 A CN 109672949A
- Authority
- CN
- China
- Prior art keywords
- resistance
- digital microphone
- capacitor
- earplug
- noise reduction
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- 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
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R2201/00—Details of transducers, loudspeakers or microphones covered by H04R1/00 but not provided for in any of its subgroups
- H04R2201/10—Details of earpieces, attachments therefor, earphones or monophonic headphones covered by H04R1/10 but not provided for in any of its subgroups
Abstract
A kind of active noise reduction call earplug, it is related to telecommunications call ancillary equipment field.It includes back cavity, ear handle, iron net, digital microphone circuit board, PCB fixed frame, moving-coil loudspeaker, ante-chamber, preceding mouth, dynamic iron loudspeaker, silica gel earplugs.After by adopting the above technical scheme, the invention has the following beneficial effects: it uses digital microphone circuit, pass through the sampling of digital microphone, more accurately position periphery noise, the noise of surrounding is offset by the opposite sound spectrum of the calculating and generation of internal circuit, it can guarantee that good noise reduction protects audio fruit, allow user that can experience more preferably sense of hearing comfort level.
Description
Technical field
The present invention relates to telecommunications call ancillary equipment fields, and in particular to a kind of active noise reduction call earplug.
Background technique
It converses earplug (also known as earphone), it is a pair of of converting unit, it receives media player or receiver issued
Electric signal converts it into the sound wave that can be heard using the loudspeaker close to ear.Earphone is usually can with media player
Separation, it is connected using a plug.Prevailing with portable electronic devices, earphone is chiefly used in mobile phone, walkman, radio reception
Machine, consumer requires the quality appearance of earphone and functional requirement is more more and more intense, especially the sound insulation and noise reduction function of earphone itself
Energy.Existing earphone is varied in the market, but the microphone wherein used inside most call earplugs is capacitance microphone, electric
The sampling comparison for holding microphone is more inaccurate, does not accomplish accurately to position noise reduction, and this electricity is not added in earplug cavity
Road, cannot allow the good result for reaching noise reduction, and user is experienced in use less than more preferably comfort level.
Summary of the invention
In view of the defects and deficiencies of the prior art, the present invention intends to provide a kind of active noise reduction converse earplug, it
Using digital microphone circuit, by the sampling of digital microphone, periphery noise is more accurately positioned, internal circuit is passed through
Calculating and generate opposite sound spectrum to offset the noise of surrounding, can guarantee good noise reduction guarantor audio fruit, allow user
More preferably sense of hearing comfort level can be experienced.
To achieve the above object, the technical solution of the present invention is as follows: it includes back cavity 1, ear handle 2, iron net 3, digital microphone
Circuit board 4, PCB fixed frame 5, moving-coil loudspeaker 6, ante-chamber 7, preceding mouth 8, dynamic iron loudspeaker 9, silica gel earplugs 10；The appearance of 1 side of back cavity
Ear handle 2 is fixed on face, iron net 3 is set on the top surface in earplug shell back cavity 1, and digital microphone is arranged in 3 lower surface of iron net
Wind circuit board 4,5 sets of PCB fixed frame on iron net 3, digital microphone circuit board 4 and are fixed in back cavity 1；6 sets of moving-coil loudspeaker
In the outside of PCB fixed frame 5, the lower part of moving-coil loudspeaker 6 is arranged in ante-chamber 7, and ante-chamber 7 is fixed on the bottom position of back cavity 1；Before
The outer surface of 7 side locations of chamber is equipped with preceding mouth 8, and the inside of preceding mouth 8 is arranged in dynamic iron loudspeaker 9, and 10 sets of silica gel earplugs in preceding mouth 8
Outer surface.
2 head of ear handle is fixed on the side surface of back cavity 1, and the tail portion of ear handle 2 is provided with earphone cable and connects hole 21.Ear
Machine line connects hole 21 for passing through the digital microphone circuit board 4 inside the external earphone cable access earphone for receiving voice signal
After 4 sampling processing of digital microphone circuit board, sound is reached into moving-coil loudspeaker 6, dynamic iron loudspeaker 9, then be passed in the ear of user.
The digital microphone circuit board 4 includes digital microphone chip IC, resistance R1, resistance R2, resistance R3, capacitor
C1, capacitor C2, capacitor C3, first interface TP1, second interface TP2, third interface TP3, ground line；Digital microphone chip IC
Two link positions and ground line in left side connect, and prevent electrostatic accumulation interference sound signal；On the right side of digital microphone chip IC
Voltage output position connect resistance R1, resistance R1 connection first interface TP1, capacitor C1 pass through ground line after being connected to resistance R1
Ground connection；Signal output position on the right side of digital microphone chip IC connects resistance R2, and resistance R2 is connected on second interface TP2,
Capacitor C2 is connected to behind one end of resistance R2 through ground connection, and resistance R3 is connected to the other end of resistance R2, and capacitor C3 connects
It connects after resistance R3, is connected to third interface TP3.The first interface TP1, second interface TP2, third interface TP3 are used for
The access of sounding circuit.
The connection type of the capacitor C2, capacitor C3 are to be connected in parallel.Capacitor C2, capacitor C3 is connected in parallel can increase electricity
Hold, control the frequency of current signal, to achieve the effect that control sound frequency, guarantees better noise reduction effect.
The outer surface on 7 top of ante-chamber is provided with card slot 71.After internal each component is installed, by 1 set of back cavity
On ante-chamber 7, guarantee the fixation position of back cavity 1 Yu ante-chamber 7 using card slot 71.
Non-slip groove 81 is provided on 8 outer surface of preceding mouth.Non-slip groove 81 can be used for fixing 10 sets of silica gel earplugs preceding
Position after mouth 8 prevents silica gel earplugs 10 from falling off from preceding mouth 8, influences usage comfort.
The working principle of the invention: on the basis of original earphone, digital microphone circuit is added in earphone back cavity
Plate more accurately positions periphery noise by the sampling of digital microphone, opposite by the calculating and generation of internal circuit
Sound spectrum is to offset the noise of surrounding.
After adopting the above technical scheme, the invention has the following beneficial effects: it passes through digital microphone using digital microphone circuit
Sampling, more accurate positioning periphery noise, by the calculating of internal circuit and generate opposite sound spectrum to offset around
Noise, can guarantee that good noise reduction protects audio fruit, allow user that can experience more preferably sense of hearing comfort level.
Detailed description of the invention
In order to illustrate the technical solution of the embodiments of the present invention more clearly, below will be to needed in the embodiment attached
Figure is briefly described, it should be apparent that, the accompanying drawings in the following description is some embodiments of the embodiment of the present invention, for ability
For the those of ordinary skill of domain, without creative efforts, it can also be obtained according to these attached drawings other attached
Figure.
Fig. 1 is each composition modular construction schematic diagram of the invention；
Fig. 2 is digital microphone circuit board catenation principle schematic diagram of the invention.
Detailed description of the invention: back cavity 1, ear handle 2, iron net 3, digital microphone circuit board 4, PCB fixed frame 5, moving-coil loudspeaker 6, preceding
Chamber 7, preceding mouth 8, dynamic iron loudspeaker 9, silica gel earplugs 10, earphone cable meet hole 21, digital microphone chip IC, resistance R1, resistance R2, electricity
Hinder R3, capacitor C1, capacitor C2, capacitor C3, first interface TP1, second interface TP2, third interface TP3, card slot 71, non-slip groove
81。
Specific embodiment
Referring to shown in Fig. 1-Fig. 2, present embodiment the technical solution adopted is that: it includes back cavity 1, ear handle 2, iron net
3, digital microphone circuit board 4, PCB fixed frame 5, moving-coil loudspeaker 6, ante-chamber 7, preceding mouth 8, dynamic iron loudspeaker 9, silica gel earplugs 10；Afterwards
Ear handle 2 is fixed on the outer surface of 1 side of chamber, iron net 3 is set on the top surface in earplug shell back cavity 1,3 lower surface of iron net
Digital microphone circuit board 4 is set, and 5 sets of PCB fixed frame on iron net 3, digital microphone circuit board 4 and are fixed in back cavity 1；
6 sets of the moving-coil loudspeaker outsides in PCB fixed frame 5, the lower part of moving-coil loudspeaker 6 is arranged in ante-chamber 7, and ante-chamber 7 is fixed on back cavity 1
Bottom position；The outer surface of 7 side locations of ante-chamber is equipped with preceding mouth 8, and the inside of preceding mouth 8, silica gel earplugs are arranged in dynamic iron loudspeaker 9
10 sets of outer surfaces in preceding mouth 8.
2 head of ear handle is fixed on the side surface of back cavity 1, and the tail portion of ear handle 2 is provided with earphone cable and connects hole 21.Ear
Machine line connects hole 21 for passing through the digital microphone circuit board 4 inside the external earphone cable access earphone for receiving voice signal
After 4 sampling processing of digital microphone circuit board, sound is reached into moving-coil loudspeaker 6, dynamic iron loudspeaker 9, then be passed in the ear of user.
The digital microphone circuit board 4 includes digital microphone chip IC, resistance R1, resistance R2, resistance R3, capacitor
C1, capacitor C2, capacitor C3, first interface TP1, second interface TP2, third interface TP3, ground line；Digital microphone chip IC
Two link positions and ground line in left side connect, and prevent electrostatic accumulation interference sound signal；On the right side of digital microphone chip IC
Voltage output position connect resistance R1, resistance R1 connection first interface TP1, capacitor C1 pass through ground line after being connected to resistance R1
Ground connection；Signal output position on the right side of digital microphone chip IC connects resistance R2, and resistance R2 is connected on second interface TP2,
Capacitor C2 is connected to behind one end of resistance R2 through ground connection, and resistance R3 is connected to the other end of resistance R2, and capacitor C3 connects
It connects after resistance R3, is connected to third interface TP3.The first interface TP1, second interface TP2, third interface TP3 are used for
The access of sounding circuit.
The connection type of the capacitor C2, capacitor C3 are to be connected in parallel.Capacitor C2, capacitor C3 is connected in parallel can increase electricity
Hold, control the frequency of current signal, to achieve the effect that control sound frequency, guarantees better noise reduction effect.
The outer surface on 7 top of ante-chamber is provided with card slot 71.After internal each component is installed, by 1 set of back cavity
On ante-chamber 7, guarantee the fixation position of back cavity 1 Yu ante-chamber 7 using card slot 71.
Non-slip groove 81 is provided on 8 outer surface of preceding mouth.Non-slip groove 81 can be used for fixing 10 sets of silica gel earplugs preceding
Position after mouth 8 prevents silica gel earplugs 10 from falling off from preceding mouth 8, influences usage comfort.
The working principle of the invention: on the basis of original earphone, digital microphone circuit is added in earphone back cavity
Plate more accurately positions periphery noise by the sampling of digital microphone, opposite by the calculating and generation of internal circuit
Sound spectrum is to offset the noise of surrounding.
After adopting the above technical scheme, the invention has the following beneficial effects: it passes through digital wheat using digital microphone circuit
The sampling of gram wind, more accurate positioning periphery noise by the calculating of internal circuit and generate opposite sound spectrum to offset
The noise of surrounding can guarantee that good noise reduction protects audio fruit, allow user that can experience more preferably sense of hearing comfort level.
The above is only used to illustrate the technical scheme of the present invention and not to limit it, and those of ordinary skill in the art are to this hair
The other modifications or equivalent replacement that bright technical solution is made, as long as it does not depart from the spirit and scope of the technical scheme of the present invention,
It is intended to be within the scope of the claims of the invention.
Claims (5)
1. a kind of active noise reduction call earplug includes back cavity (1), ear handle (2), iron net (3), PCB fixed frame (5), moving-coil loudspeaker
(6), ante-chamber (7), preceding mouth (8), dynamic iron loudspeaker (9), silica gel earplugs (10), it is characterised in that: it also includes digital microphone wind-powered electricity generation
Road plate (4), the digital microphone circuit board (4) include digital microphone chip (IC), resistance (R1), resistance (R2), electricity
Hinder (R3), capacitor (C1), capacitor (C2), capacitor (C3), first interface (TP1), second interface (TP2), third interface (TP3)；
Two link positions and ground line on the left of digital microphone chip (IC) connect；Voltage on the right side of digital microphone chip (IC)
Output position connects resistance (R1), and resistance (R1) connects first interface (TP1), and capacitor (C1) is connected to resistance (R1) afterwards by connecing
It is ground wire grounded；Signal output position on the right side of digital microphone chip (IC) connects resistance (R2), and resistance (R2) is connected to second
On interface (TP2), capacitor (C2) is connected to behind one end of resistance (R2) through ground connection, and resistance (R3) is connected to resistance
(R2) the other end after capacitor (C3) is connected to resistance (R3), is connected to third interface (TP3).
The earplug 2. a kind of active noise reduction according to claim 1 is conversed, it is characterised in that: described back cavity (1) side
It is fixed on outer surface ear handle (2), iron net (3) is set on the top surface in earplug shell back cavity (1), iron net (3) lower surface
It is arranged digital microphone circuit board (4), 5 sets of PCB fixed frame on iron net (3), digital microphone circuit board (4) and after being fixed on
In chamber (1)；Moving-coil loudspeaker (6) cover in the outside of PCB fixed frame (5), and ante-chamber (7) setting is and preceding in the lower part of moving-coil loudspeaker (6)
Chamber (7) is fixed on the bottom position of back cavity (1)；The outer surface of ante-chamber (7) side locations is equipped with preceding mouth (8), moves iron loudspeaker (9)
Inside in (8) Qian Zui is set, and silica gel earplugs (10) cover the outer surface in (8) Qian Zui.
The earplug 3. a kind of active noise reduction according to claim 1 is conversed, it is characterised in that: the capacitor (C2), capacitor
(C3) connection type is to be connected in parallel.
The earplug 4. a kind of active noise reduction according to claim 1 is conversed, it is characterised in that: described ante-chamber (7) top
Outer surface is provided with card slot (71).
The earplug 5. a kind of active noise reduction according to claim 1 is conversed, it is characterised in that: described preceding mouth (8) outer surface
On be provided with non-slip groove (81).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710959214.5A CN109672949A (en) | 2017-10-16 | 2017-10-16 | A kind of active noise reduction call earplug |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710959214.5A CN109672949A (en) | 2017-10-16 | 2017-10-16 | A kind of active noise reduction call earplug |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109672949A true CN109672949A (en) | 2019-04-23 |
Family
ID=66139875
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710959214.5A Pending CN109672949A (en) | 2017-10-16 | 2017-10-16 | A kind of active noise reduction call earplug |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109672949A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20070154046A1 (en) * | 2005-12-29 | 2007-07-05 | Steven Mishan | Noise reducing headphones with sound conditioning |
| CN101001481A (en) * | 2006-01-14 | 2007-07-18 | 三星电子株式会社 | Apparatus and method of reducing noise of earphones, noise reducing earphones, and a portable audio reproducing apparatus |
| CN101783986A (en) * | 2010-03-17 | 2010-07-21 | 青岛海信移动通信技术股份有限公司 | Earphone interface circuit and electronic equipment |
| CN202310066U (en) * | 2011-10-31 | 2012-07-04 | 东莞市翔音电子有限公司 | Low-frequency denoising control device for denoising earphone |
| CN203933898U (en) * | 2014-04-14 | 2014-11-05 | 深圳市冠旭电子有限公司 | A kind of VGA CARD is eliminated circuit and active noise reduction earphone |
| CN205305067U (en) * | 2015-12-15 | 2016-06-08 | 英国奥科斯国际有限公司 | Wireless active noise reduction earphone |
| CN106601225A (en) * | 2017-01-23 | 2017-04-26 | 声源科技（深圳）有限公司 | Active noise reduction earphone ground noise reducing method and device |
-
2017
- 2017-10-16 CN CN201710959214.5A patent/CN109672949A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20070154046A1 (en) * | 2005-12-29 | 2007-07-05 | Steven Mishan | Noise reducing headphones with sound conditioning |
| CN101001481A (en) * | 2006-01-14 | 2007-07-18 | 三星电子株式会社 | Apparatus and method of reducing noise of earphones, noise reducing earphones, and a portable audio reproducing apparatus |
| CN101783986A (en) * | 2010-03-17 | 2010-07-21 | 青岛海信移动通信技术股份有限公司 | Earphone interface circuit and electronic equipment |
| CN202310066U (en) * | 2011-10-31 | 2012-07-04 | 东莞市翔音电子有限公司 | Low-frequency denoising control device for denoising earphone |
| CN203933898U (en) * | 2014-04-14 | 2014-11-05 | 深圳市冠旭电子有限公司 | A kind of VGA CARD is eliminated circuit and active noise reduction earphone |
| CN205305067U (en) * | 2015-12-15 | 2016-06-08 | 英国奥科斯国际有限公司 | Wireless active noise reduction earphone |
| CN106601225A (en) * | 2017-01-23 | 2017-04-26 | 声源科技（深圳）有限公司 | Active noise reduction earphone ground noise reducing method and device |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20190423 |