CN110300344A - Adaptive noise reduction earphone - Google Patents
Adaptive noise reduction earphone Download PDFInfo
- Publication number
- CN110300344A CN110300344A CN201910226729.3A CN201910226729A CN110300344A CN 110300344 A CN110300344 A CN 110300344A CN 201910226729 A CN201910226729 A CN 201910226729A CN 110300344 A CN110300344 A CN 110300344A
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- Prior art keywords
- noise reduction
- module
- auris dextra
- miaow
- earphone
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- 230000003044 adaptive effect Effects 0.000 title claims abstract description 26
- 240000006409 Acacia auriculiformis Species 0.000 claims abstract description 54
- 210000005069 ears Anatomy 0.000 claims abstract description 54
- 230000000930 thermomechanical effect Effects 0.000 claims abstract description 16
- 238000001914 filtration Methods 0.000 claims abstract description 14
- 230000036039 immunity Effects 0.000 claims abstract description 13
- 239000003990 capacitor Substances 0.000 claims description 20
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 10
- 229910052710 silicon Inorganic materials 0.000 claims description 10
- 239000010703 silicon Substances 0.000 claims description 10
- 230000005611 electricity Effects 0.000 claims 1
- 238000004891 communication Methods 0.000 abstract description 3
- 238000012545 processing Methods 0.000 abstract description 3
- 230000007547 defect Effects 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 8
- 238000013461 design Methods 0.000 description 2
- 238000012546 transfer Methods 0.000 description 2
- 210000000988 bone and bone Anatomy 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 238000011946 reduction process Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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
Abstract
The invention discloses a kind of adaptive noise reduction earphones, it includes control box, pcb board, left headset assembly and auris dextra thermomechanical components, the pcb board setting is in control box, one end of the control box is connected with left headset assembly with auris dextra thermomechanical components respectively by connecting line, the noise reduction that the pcb board is connect for realizing earphone with left headset assembly and auris dextra thermomechanical components;The present invention passes through comprehensive acquisition noise signal; pass through processing of circuit; it is identical to generate an energy; the acoustic signals of opposite in phase; then achieve the purpose that protect human ear by filtering immunity module, repeating signal acquisition module, ANC signal acquisition module and switch module, balancing out noise again;In addition, in the case where protecting human ear communication can also be carried out with side personnel, the defect of traditional active noise reduction earphone in this respect is compensated for.
Description
Technical field
The invention belongs to ear phone technology fields, and in particular to a kind of adaptive noise reduction earphone.
Background technique
In-Ear Headphones have certain defencive function, i.e. physics noise reduction or active noise reduction at present, when people outdoors or noise
It is played a certain protective role in miscellaneous environment;But if noise is bigger, it will the sound of the call used is covered, is made pair
The voice of user is not heard in side's call;In addition, though wearing regular headset can be carried out physics noise reduction or active noise reduction, noisy
In the environment of can not with personnel at one's side carry out normal communication.
Summary of the invention
The object of the present invention is to provide a kind of adaptive noise reduction earphones, by be combineding with each other between modules on pcb board
Improve speech quality.
The technical scheme adopted by the invention is that a kind of adaptive noise reduction earphone comprising control box, pcb board, left earphone
Component and auris dextra thermomechanical components, in control box, one end of the control box is respectively and left by connecting line for the pcb board setting
Headset assembly is connected with auris dextra thermomechanical components, and the pcb board is connect with left headset assembly and auris dextra thermomechanical components for realizing earphone
Noise reduction.
The features of the present invention also characterized in that
The pcb board include main control chip, power module, switch module, active noise reduction module, filtering immunity module,
Repeating signal acquisition module, ANC signal acquisition module, filter module and loudspeaker output module;
The power module, switch module, active noise reduction module and filtering immunity module are connect with main control chip, institute
It states filtering immunity module to connect with repeating signal acquisition module, ANC signal acquisition module is dropped by filter module and actively
Module of making an uproar connection, the active noise reduction module are also connect with loudspeaker output module.
The left headset assembly includes left earplug, left earphone vibration noise reduction unit, left auricular concha, left horn, left silicon miaow, left tune
One end of left earphone vibration noise reduction unit is arranged in sound net and left capacitor miaow, the left earplug, and the left horn is arranged on a left side
Earphone vibrates the other end of noise reduction unit, and the left capacitor miaow acquires sound, is filtered through left tuning net, defeated by left horn
Out.
The left earphone vibration noise reduction unit includes muzzle before left auricular concha, mouth before left osteoacusis miaow and left auricular concha, the left side
Mouth is arranged at before left auricular concha in muzzle before osteoacusis miaow and left auricular concha, and the left osteoacusis miaow is fixed on before left auricular concha on mouth.
The auris dextra thermomechanical components include right earplug, auris dextra machine vibration noise reduction unit, auris dextra shell, right horn, right silicon miaow, right tune
One end of auris dextra machine vibration noise reduction unit is arranged in sound net and right capacitor miaow, the right earplug, and the right horn is arranged on the right side
Earphone vibrates the other end of noise reduction unit, and the right capacitor miaow acquires sound, is filtered through right tuning net, defeated by right horn
Out.
The auris dextra thermomechanical components further comprise auris dextra shell rear cover, and the right silicon miaow covers after being fixed on auris dextra shell.
The auris dextra machine vibration noise reduction unit includes muzzle before auris dextra shell, mouth before right osteoacusis miaow and auris dextra shell, the bone
Mouth is arranged at before auris dextra shell in muzzle before conduction miaow and auris dextra shell, and the osteoacusis miaow is fixed on before auris dextra shell on mouth.
The control box includes upper cover, PTT key, lower cover and clip, and the PTT key is formed positioned at upper cover and lower cover
Cavity in and pass through upper cover, the clip is located at lower cover bottom.
The active noise reduction module includes the first chip U1, and the 9th pin of the first chip U1 picks shell, and the 14th
Pin is connected by the 36th capacitor C36 and the 16th pin, the 15th pin ground connection, the 28th pin and the 31st
Pin passes through the 50th resistance R50 and the 51st resistance R51 respectively and picks shell, the 28th pin and the 43rd resistance
One end of R43 connection, the 43rd resistance R43 is grounded by the 38th capacitor C38, and the other end passes through the 40th capacitor
C40 picks shell.
The model TM2317 of the first chip U1.
Compared with prior art, the present invention, by processing of circuit, produces in use, by comprehensive acquisition noise signal
A raw energy is identical, the acoustic signals of opposite in phase, then again by filtering immunity module, repeating signal acquisition module,
ANC signal acquisition module and switch module balance out noise, achieve the purpose that protect human ear.
Detailed description of the invention
Fig. 1 is that the embodiment of the present invention provides the structural schematic diagram of adaptive noise reduction earphone;
Fig. 2 is that the embodiment of the present invention provides the explosive view of adaptive noise reduction earphone;
Fig. 3 is that the embodiment of the present invention provides the flow diagram of adaptive noise reduction earphone;
Fig. 4 is that the embodiment of the present invention provides the circuit diagram of power module in adaptive noise reduction earphone;
Fig. 5 provides the circuit diagram of switch module in adaptive noise reduction earphone for the embodiment of the present invention;
Fig. 6 provides the circuit diagram of active noise reduction module in adaptive noise reduction earphone for the embodiment of the present invention;
Fig. 7 is that the embodiment of the present invention provides the circuit diagram of filter module in adaptive noise reduction earphone;
Fig. 8 is that the embodiment of the present invention provides the circuit diagram of loudspeaker output module in adaptive noise reduction earphone;
Fig. 9 is that the embodiment of the present invention provides the circuit diagram of signal acquisition and filter circuit in adaptive noise reduction earphone.
Specific embodiment
In order to make the objectives, technical solutions, and advantages of the present invention clearer, with reference to the accompanying drawings and embodiments, right
The present invention is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, and
It is not used in the restriction present invention.
The embodiment of the present invention provides a kind of adaptive noise reduction earphone, as shown in Figure 1-3, it include it include control box 1,
Pcb board 2, left headset assembly 3 and auris dextra thermomechanical components 4, the setting of pcb board 2 is in control box 1, one end of the control box 1
It is connected respectively with left headset assembly 3 and auris dextra thermomechanical components 4 by connecting line, the pcb board 2 and left headset assembly 3 and right earphone
The noise reduction that component 4 connects for realizing earphone.
The pcb board 2 is anti-including main control chip 21, power module 22, switch module 23, active noise reduction module 24, filtering
Interference module 25, repeating signal acquisition module 26, ANC signal acquisition module 27, filter module 28 and loudspeaker output module
29;
The power module 22, switch module 23, active noise reduction module 24 and filtering immunity module 25 with master control core
Piece 21 connects, and the filtering immunity module 25 and repeating signal acquisition module 26 connect, and ANC signal acquisition module 27 passes through filter
Wave device module 28 and active noise reduction module 24 connect, and the active noise reduction module 24 is also connect with loudspeaker output module 29;
In this way, using the above structure, after switch module 23 is opened, power module 22 starts to power to each chip, master control
Chip 21 is started to work, and repeating signal acquisition module 26 and ANC signal acquisition module 27 start to acquire outside environmental sounds at this time
Then signal and people's one's voice in speech are filtered by filtering immunity module 25 and filter module 28, using
Active noise reduction module 24 carries out noise reduction process, exports reversed sound wave finally by loudspeaker output module 29.
The left headset assembly 3 includes left earplug 31, left earphone vibration noise reduction unit 32, left auricular concha 33, left horn 34, a left side
One end of left earphone vibration noise reduction unit 32 is arranged in silicon miaow 35, left tuning net 36 and left capacitor miaow 37, the left earplug 31,
The other end of left earphone vibration noise reduction unit 32 is arranged in the left horn 34, and the left capacitor miaow 37 acquires sound, through left tune
Sound net 36 is filtered, and is exported by left horn 34.
It further comprise left auricular concha rear cover 38, the left silicon miaow 35 is fixed on left auricular concha rear cover 38.
The left earphone vibration noise reduction unit 32 includes mouth before muzzle 321, left osteoacusis miaow 322 and left auricular concha before left auricular concha
323, mouth 323 is arranged at before left auricular concha in muzzle 321 before the left osteoacusis miaow 322 and left auricular concha, the left osteoacusis miaow
322 are fixed on before left auricular concha on mouth 323;
In this way, forming one then in conjunction with muzzle 321 before mouth 323 before left auricular concha and left auricular concha by left osteoacusis miaow 322
The design of a acoustic vibrations noise reduction after before acoustic wave vibrations to left auricular concha above muzzle 321, can be absorbed by left osteoacusis miaow 322.
But the most energy of external environment noise can only shake before left auricular concha on muzzle 321, this assures noisy
Under environment, voice transfer and call can be carried out.
The auris dextra thermomechanical components 4 include right earplug 41, auris dextra machine vibration noise reduction unit 42, auris dextra shell 43, right horn 44, the right side
One end of auris dextra machine vibration noise reduction unit 42 is arranged in silicon miaow 45, right tuning net 46 and right capacitor miaow 47, the right earplug 41,
The other end of auris dextra machine vibration noise reduction unit 42 is arranged in the right horn 44, and the right capacitor miaow 47 acquires sound, through right tune
Sound net 46 is filtered, and is exported by right horn 44.
It further comprise auris dextra shell rear cover 48, the right silicon miaow 45 is fixed on auris dextra shell rear cover 48.
The auris dextra machine vibration noise reduction unit 42 includes mouth before muzzle 421, right osteoacusis miaow 422 and auris dextra shell before auris dextra shell
423, mouth 423 is arranged at before auris dextra shell in muzzle 421 before the right osteoacusis miaow 422 and auris dextra shell, the right osteoacusis miaow
422 are fixed on before auris dextra shell on mouth 423;
In this way, forming one then in conjunction with muzzle 421 before mouth 423 before auris dextra shell and auris dextra shell by right osteoacusis miaow 422
The design of a acoustic vibrations noise reduction after before acoustic wave vibrations to auris dextra shell above muzzle 421, can be absorbed by right osteoacusis miaow 422.
But the most energy of external environment noise can only shake before auris dextra shell on muzzle 421, this assures noisy
Under environment, voice transfer and call can be carried out.
The control box 1 includes upper cover 11, PTT key 12, lower cover 13 and clip 14, and the PTT key 12 is located at upper
In the cavity that lid 11 and lower cover 13 are formed and upper cover 11 is passed through, the clip 14 is located at 13 bottom of lower cover.
It as shown in figures 4-9, include the physical circuit figure of module by pcb board 2;
Wherein, the active noise reduction module 24 includes the first chip U1, and the 9th pin of the first chip U1 picks shell,
14th pin is connected by the 36th capacitor C36 and the 16th pin, the 15th pin ground connection, the 28th pin and the
31 pins pass through the 50th resistance R50 and the 51st resistance R51 respectively and pick shell, the 28th pin and the 43rd
One end of resistance R43 connection, the 43rd resistance R43 is grounded by the 38th capacitor C38, and the other end passes through the 40th
Capacitor C40 picks shell.
The model TM2317 of the first chip U1.
The filtering immunity module 25, repeating signal acquisition module 26 and ANC signal acquisition module 27 collectively form
Signal acquisition and filter circuit.
Compared with prior art, the present invention generates an energy by processing of circuit by comprehensive acquisition noise signal
Identical, the acoustic signals of opposite in phase are measured, are then adopted again by filtering immunity module, repeating signal acquisition module, ANC signal
Collection module and switch module balance out noise, achieve the purpose that protect human ear;
The present invention realizes high noisy call function by filter module, by right osteoacusis miaow and left osteoacusis miaow into
The conversion of row acoustoelectric signal inhibits the noise with ambient enviroment to greatest extent, realizes the function of conversing under noise;
The present invention realizes the function of speech enhan-cement, and when the loudness of sound is not up to 85dB, circuit is adaptively put
Greatly, at this moment entire ambient enviroment voice signal is amplified, and especially voice is more prominent and obvious;
It can also be in addition, being realized by active noise reduction module and repeating signal acquisition module in the case where protecting human ear
Side personnel carry out communication, compensate for the defect of traditional active noise reduction earphone in this respect.
The foregoing is only a preferred embodiment of the present invention, but scope of protection of the present invention is not limited thereto,
In the technical scope disclosed by the present invention, any changes or substitutions that can be easily thought of by anyone skilled in the art,
It should be covered by the protection scope of the present invention.Therefore, protection scope of the present invention should be with scope of protection of the claims
Subject to.
Claims (10)
1. a kind of adaptive noise reduction earphone, which is characterized in that it include control box (1), pcb board (2), left headset assembly (3) with
And auris dextra thermomechanical components (4), in control box (1), one end of control box (1) passes through connecting line point for pcb board (2) setting
It is not connected with left headset assembly (3) and auris dextra thermomechanical components (4), the pcb board (2) and left headset assembly (3) and auris dextra thermomechanical components
(4) noise reduction for realizing earphone is connected.
2. a kind of adaptive noise reduction earphone according to claim 1, which is characterized in that the pcb board (2) includes master control core
Piece (21), power module (22), switch module (23), active noise reduction module (24), filtering immunity module (25), repeating signal
Acquisition module (26), ANC signal acquisition module (27), filter module (28) and loudspeaker output module (29);
The power module (22), switch module (23), active noise reduction module (24) and filtering immunity module (25) with master
Control chip (21) connection, the filtering immunity module (25) and repeating signal acquisition module (26) connection, ANC signal acquisition mould
Block (27) is connected by filter module (28) and active noise reduction module (24), and the active noise reduction module (24) is also defeated with loudspeaker
Module (29) connects out.
3. a kind of adaptive noise reduction earphone according to claim 2, which is characterized in that the left headset assembly (3) includes
Left earplug (31), left earphone vibrate noise reduction unit (32), left auricular concha (33), left horn (34), left silicon miaow (35), left tuning net
(36) and the one end of noise reduction unit (32), the left side are vibrated in left capacitor miaow (37), left earplug (31) setting in left earphone
Loudspeaker (34) setting is in the other end of left earphone vibration noise reduction unit (32), and the left capacitor miaow (37) acquires sound, through left tune
Sound net (36) is filtered, and is exported by left horn (34).
4. a kind of adaptive noise reduction earphone according to claim 3, which is characterized in that the left earphone vibrates noise reduction unit
It (32) include muzzle (321) before left auricular concha, mouth (323) before left osteoacusis miaow (322) and left auricular concha, the left osteoacusis miaow
(322) mouth (323) is arranged at before left auricular concha in muzzle (321) and before left auricular concha, and the left osteoacusis miaow (322) is fixed on a left side
Before auricular concha on mouth (323).
5. a kind of adaptive noise reduction earphone according to claim 4, which is characterized in that the auris dextra thermomechanical components (4) include
Right earplug (41), auris dextra machine vibration noise reduction unit (42), auris dextra shell (43), right horn (44), right silicon miaow (45), right tuning net
(46) and right capacitor miaow (47), the right earplug (41) are arranged on one end of auris dextra machine vibration noise reduction unit (42), the right side
The other end in auris dextra machine vibration noise reduction unit (42) is arranged in loudspeaker (44), and the right capacitor miaow (47) acquires sound, through right tune
Sound net (46) is filtered, and is exported by right horn (44).
6. a kind of adaptive noise reduction earphone according to claim 5, which is characterized in that the auris dextra thermomechanical components (4) are into one
Step includes auris dextra shell rear cover (48), and the right silicon miaow (45) is fixed on auris dextra shell rear cover (48).
7. a kind of adaptive noise reduction earphone according to claim 6, which is characterized in that the auris dextra machine vibration noise reduction unit
It (42) include muzzle (421) before auris dextra shell, mouth (423) before right osteoacusis miaow (422) and auris dextra shell, the right osteoacusis miaow
(422) mouth (423) is arranged at before auris dextra shell in muzzle (421) and before auris dextra shell, and the right osteoacusis miaow (422) is fixed on the right side
Before auricular concha on mouth (423).
8. a kind of adaptive noise reduction earphone according to claim 7, which is characterized in that the control box (1) includes upper cover
(11), PTT key (12), lower cover (13) and clip (14), the PTT key (12) are located at upper cover (11) and lower cover (13) shape
At cavity in and pass through upper cover (11), the clip (14) is located at lower cover (13) bottom.
9. according to a kind of described in any item adaptive noise reduction earphones of claim 2-8, which is characterized in that the active noise reduction mould
Block (24) includes the first chip U1, and the 9th pin of the first chip U1 picks shell, and the 14th pin passes through the 36th electricity
Hold C36 and the connection of the 16th pin, the 15th pin ground connection, the 28th pin and the 31st pin pass through the 50th respectively
Resistance R50 and the 51st resistance R51 picks shell, and the 28th pin is connect with the 43rd resistance R43, and the described 43rd
One end of resistance R43 is grounded by the 38th capacitor C38, and the other end is picked shell by the 40th capacitor C40.
10. a kind of adaptive noise reduction earphone according to claim 9, which is characterized in that the model of the first chip U1
For TM2317.
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