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 boardImprove speech quality.
The technical scheme adopted by the invention is that a kind of adaptive noise reduction earphone comprising control box, pcb board, left earphoneComponent 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 settingHeadset 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 earphoneNoise 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, instituteIt states filtering immunity module to connect with repeating signal acquisition module, ANC signal acquisition module is dropped by filter module and activelyModule 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 tuneOne 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 sideEarphone vibrates the other end of noise reduction unit, and the left capacitor miaow acquires sound, is filtered through left tuning net, defeated by left hornOut.
The left earphone vibration noise reduction unit includes muzzle before left auricular concha, mouth before left osteoacusis miaow and left auricular concha, the left sideMouth 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 tuneOne 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 sideEarphone vibrates the other end of noise reduction unit, and the right capacitor miaow acquires sound, is filtered through right tuning net, defeated by right hornOut.
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 boneMouth 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 coverCavity 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 14thPin is connected by the 36th capacitor C36 and the 16th pin, the 15th pin ground connection, the 28th pin and the 31stPin passes through the 50th resistance R50 and the 51st resistance R51 respectively and picks shell, the 28th pin and the 43rd resistanceOne end of R43 connection, the 43rd resistance R43 is grounded by the 38th capacitor C38, and the other end passes through the 40th capacitorC40 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 signalA 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.
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, rightThe present invention is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, andIt 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 1It 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 earphoneThe 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, filteringInterference module 25, repeating signal acquisition module 26, ANC signal acquisition module 27, filter module 28 and loudspeaker output module29；
The power module 22, switch module 23, active noise reduction module 24 and filtering immunity module 25 with master control corePiece 21 connects, and the filtering immunity module 25 and repeating signal acquisition module 26 connect, and ANC signal acquisition module 27 passes through filterWave 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 controlChip 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 timeThen signal and people's one's voice in speech are filtered by filtering immunity module 25 and filter module 28, usingActive 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 sideOne 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 tuneSound 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 concha323, 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 miaow322 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 322The 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 noisyUnder 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 sideOne 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 tuneSound 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 shell423, 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 miaow422 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 422The 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 noisyUnder 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 upperIn 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 the31 pins pass through the 50th resistance R50 and the 51st resistance R51 respectively and pick shell, the 28th pin and the 43rdOne end of resistance R43 connection, the 43rd resistance R43 is grounded by the 38th capacitor C38, and the other end passes through the 40thCapacitor 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 formSignal acquisition and filter circuit.
Compared with prior art, the present invention generates an energy by processing of circuit by comprehensive acquisition noise signalIdentical, the acoustic signals of opposite in phase are measured, are then adopted again by filtering immunity module, repeating signal acquisition module, ANC signalCollection 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 intoThe 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 putGreatly, 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 earSide 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 claimsSubject to.