Tsib tsib cuam tshuam txog lub suab zoo ntawm pob ntseg pab

Raws li kev tshaj lij hnov cov khoom siv chaw tsim tshuaj paus, Jinghao Medical ua ke tsim nws lub xyoo ntawm R&D thiab kev tsim khoom los nthuav tawm cov ntsiab lus hauv qab no cuam tshuam txog lub suab zoo ntawm pob ntseg pab, feem ntau yog hauv cov hauv qab no:

Ua ntej, lub suab nrov tom qab lub suab nrov: cov suab nrov tom qab muaj qhov cuam tshuam zoo rau cov neeg siv tau hnov ​​zoo dua lossis zoo dua, thiab qee qhov ntsuas lub suab siab kom muaj lub suab nrov qis dua li 14dB. tib lub sijhawm, nws yog qhov tsim nyog kom paub qhov txawv ntawm qhov sib txawv ntawm lub suab nrov thiab cov suab nrov tom qab. Piv txwv li, qee cov cuab yeej ua kom zoo siab muaj qhov ntsuas lub suab qis tsawg dua 20 dB, thiab lub suab nrov me me tau txaus, tab sis cov tib neeg ib txwm muaj suab nrov thiab hnov ​​cov suab nrov.

Thib ob, qhov ntau zaus teb ntawm hnov pob ntseg: Peb paub ntau qhov ntau zaus uas tuaj yeem hnov ​​los ntawm tib neeg lub pob ntseg: 20Hz-20KHz, qhov ntau zaus ntawm kev hais lus: 200Hz-8KHz.Qhov dav dua cov lus teb ntawm lub pob ntseg sib pab, qhov tsawg dua nws yuav hnov ​​lub suab nrov, thiab lub suab ntau dua thiab qhov tseeb yog, ntau dua qhov tau teb cov lus nkhaus ntawm lub suab sib hais siab kawg tuaj yeem ncav cuag 7000 Hz.

Thib peb, qhov lus teb ceev ntawm lub pob ntseg: cov lus teb qeeb ua rau lub suab ua suab nrov, lub siab tsis muaj zog, lub suab tsis tsaus muag, thiab nws yooj yim los tsim ncha.People muaj pob txha zoo dua los yog tsawg zaus muaj ntau dua pom tseeb.Qhov feem ntau, qhov kev hloov siab tsawg zaus ntawm lub suab qeeb qeeb dua li qhov cuam tshuam ntau dua.Yog li ntawd, qee cov neeg siv lub rooj sib hais muaj tsawg tsawg zaus thiab qhov siab sib txawv muaj ntau dua qhov hnov ​​lub suab mloog thiab lub suab tsis huv thiab tsis totaub.

Thib plaub, qhov tsis zoo ntawm lub suab sib txawv ntawm lub pob ntseg: nrog rau qhov sib txawv tshwm sim los ntawm cov thev naus laus zis thev naus laus zis, qhov tsis sib xws los ntawm lub suab tsis sib ntxiv thiab qhov cuam tshuam los ntawm qee lub suab nrov txo. lub suab sib pab; "High-ntsis" analog-rau-digital hloov dua siab tshiab los cuam tshuam los ntawm kev tawm suab nrov.

Thib tsib, kev siv tshuab compression: Thaum kawg yog nrawm nrawm lossis qeeb qeeb? Lub nrawm thiab qeeb qeeb nws muaj nws qhov zoo. Feem ntau, cov tshuab thev naus laus zis qeeb dua yog qhov ua tau zoo rau kev xaiv cov lus txo qis. Lub suab hais lus muaj qhov sib piv zoo thiab cov txhais siab, tab sis qee qhov tshwj xeeb, qhov ceev ceev yog qhov tsim nyog.

Ib tug tsim nyog sib pab yuav tsum txiav txim siab qhov tsawg kawg yog tsib qhov ntsuas kev ua tau zoo

1. qhov ntau zaus.Qhov ntau zaus ntawm cov khoom sib hais tau tsawg yog tsawg kawg 300-3000 Hz, qhov siab ntawm cov khoom siv kom hnov ​​tau zoo yuav tsum ncav cuag 4000 Hz, thiab qhov ntau zaus ntawm cov khoom siv sib hais tau yog li ntawm 80-8000 Hz.

2. siab tshaj tawm cov suab tawm los yog lub suab tawm suab siab (SSPL) .Nws qhov tseeb sawv cev rau lub zog ntau tshaj plaws ntawm lub pob ntseg.Qhov siab tshaj tawm cov suab tawm thaum siv lub pob ntseg yuav tsum qis dua qhov tsis zoo ntawm lub pob ntseg, tshwj xeeb tshaj yog pob ntseg uas yog qhov zoo rau rov ua dua kev co, thiab cov txiaj ntsig siab tshaj plaws yuav tsum tau tswj hwm kom tiv thaiv pob ntseg cuam tshuam.

3. cov suab nrov tau ntau tshaj.Nws feem ntau sawv cev rau lub peev xwm ua kom nrov nrov ntawm cov neeg hnov ​​lus, thiab cov txiaj ntsig kom hnov ​​lus tau tsim los ntawm ntau lub teb chaws feem ntau nyob ntawm 30 thiab 80 dB. Feem ntau hais lus, yog tias qhov kev lag ntseg ntawm cov lag ntseg yog lub teeb, qhov nce yuav tsum raug xaiv yuav tsum yog me me, thiab cov khoom siv kom hnov ​​lus nrog nruab nrab nce lossis nce loj yuav tsum tau xaiv raws li qhov ntawd.Hauv siv tshwj xeeb, lub ntim hloov kho rau qhov sib txawv ntawm cov suab paj nruag nce nyob rau qee yam muaj nyob ntawm cov khoom sib hais.Qhov xaiv ntawm cov khoom siv kom haum tau tuaj yeem tau pre-payment raws li qee cov qauv. Txoj kev yooj yim tshaj plaws yog los kho qhov nce ntxiv ntawm peb cov audios ntawm 500, 1000, 2000Hz raws li cov ntshiab xim audiogram. Nws yog qhov zoo dua los siv ib nrab lossis ntau dua ntawm kev pib ntsuas. Txaus siab pab nyhuv.

4. kev teb zaus thiab lub suab kho kom haum.Yuav kom ua tau raws li lub rooj sib hais ntawm cov lag ntseg, lub pob ntseg kom hnov ​​lus yuav tsum muaj ntau cov lus teb sib txawv, thiab cov lus teb sib txawv ntawm cov zaus sib txawv hauv cov laus.Yuav kom ua kom tau txais cov lus teb ntawm lub pob ntseg pab ntau dua nyob rau hauv txoj kab nrog kev hnov ​​lus tsis zoo ntawm tus neeg lag ntseg, qee lub suab sib txawv tau teeb tsa lub suab kho suab nrov, feem ntau L sawv rau ntses bass, N li qub, thiab H yog siab.

5 .txo mus rau cov suab nrov piv (S / N) .Qhov ntau ntxiv ntawm lub pob ntseg sib pab yeej ib txwm muaj ob hom lus thiab suab nrov tsis zoo. Qhov loj dua ntawm lub teeb liab-rau-suab nrov, zoo dua qhov ua tau zoo ntawm cov ntaub ntawv xov xwm tawm.Qhov teeb liab-rau-lub suab nrov ntawm lub suab nrov tau zoo tuaj yeem ncav cuag li 40dB, thiab tsawg kawg 30dB yuav tsum tau lav.

Txuas :Tsib tsib cuam tshuam txog lub suab zoo ntawm pob ntseg pab

REF: Hnov Lus SuavTus Hais Kom Mloog Kom Ntsej Muag Cov Mloog Txog Digital
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