Tsawg zaus - ib lub tswv yim uas suav nrog cov spectrum ntawm lub suab hnov los ntawm tib neeg pob ntseg. Qhov nruab nrab, nws nyob hauv thaj tsam ntawm 20 Hz txog 20 kHz. Audiograms uas txiav txim siab lub peev xwm los hnov qhov qis dua ntawm txhua zaus muaj lawv tus kheej tus yam ntxwv, yog li peb tuaj yeem tham txog qhov nruab nrab ntawm lub rooj sib hais. Feem ntau, cov zaus qis dua 40 hertz thiab siab dua 16 kilohertz cuam tshuam rau cov xim ntawm lub suab es tsis xav tau ntawm lawv tus kheej.
Qhov ntau ntawm cov khoom siv suab thiab xa khoom sib txawv, yog li cov kev cai rau nws kuj txawv. Piv txwv li, ib lub xov tooj sib txuas ua suab nrov nrog zaus ntawm 200 Hz txog 3 kHz, thiab qhov no txaus kom nkag siab meej txhua yam hais rau hauv lub receiver ntawm lwm qhov kawg ntawm cov xaim lossis, nyob rau hauv cov ntaub ntawv ntawm kev siv lub xov tooj ntawm tes, mus rau hauv ib lub xov tooj. microphone. Tib yam siv rau lub npe hu ua "Tswb" - tshaj tawm cov suab nrov. Txawm li cas los xij, hais txog qhov ntau zaus, lub ntiaj teb tus qauv tau txais kev pom zoo, raws li cov khoom siv Hi-Fi yuav tsum muaj qhov zaus ntawm 20 txog 20,000 Hz thiab dav dua.
Cov tshuab hluav taws xob tsawg zaus siv txhua qhov chaw raws li ib feem ntawm cov hluav taws xob hluav taws xob ntawm ntau yam kev lag luam thiab cov khoom siv hauv tsev, ua ib hom xov tooj cua engineering. Lawv nyob hauv computerTV, xov tooj cua, CD player, walkie-talkies, xov tooj ntawm tes, intercoms thiab ntau lwm yam khoom uas peb paub.
Cov yam ntxwv tseem ceeb ntawm lub tshuab hluav taws xob muaj raws li hauv qab no:
- Lub zog tso zis. Niaj hnub no, nws yog suav tias yog txawv. Piv txwv li, txhawm rau muab tus neeg nkag siab me ntsis rau lub tswv yim ntawm qhov ntim siab uas nws tuaj yeem txaus siab, koj tuaj yeem pom tus lej plaub tus lej cim "PMPO" ntawm lub pob nrog lub receiver lossis amplifier. Cov ntawv no, hauv paus ntsiab lus, yuav tsum txhais tau hais tias qhov siab tshaj plaws uas cov khoom siv suab tuaj yeem tso tawm rau lub sijhawm luv. Lub hwj chim tiag tiag yog tus nqi uas muab qhov tsis muaj kev cuam tshuam sine nthwv dej ntawm qhov zaus ntawm 1000 Hz siv rau lub tswv yim ntawm lub suab nrov.
- Cov coefficient ntawm non-linear distortion yog tus nqi qhia tias tsawg zaus hauv lawv daim ntawv ntawm cov zis theem txawv ntawm cov teeb liab tawm tswv yim. Qhov no yog kab tias qhov tseem ceeb tshaj plaws, qhia tias lub suab nrov tsawg zaus ua tau zoo npaum li cas thiab hloov kho.
- Dynamic ntau yam. Cov yam ntxwv no yog ib qho tseem ceeb heev rau cov khoom siv amplification zoo, nws muab lub tswv yim ntawm qhov ncaj ntawm qhov nce graph. Nyob rau hauv lwm yam lus, nrog ib tug txaus dynamic ntau yam, tag nrho cov tsawg zaus yuav undistorted, tsis hais lawv qib. Ob qho tib si ntsiag to thiab nrov heev yuav raug muab rov ua ncaj ncees. Qhov zoo no yog qhov zoo rau lub raj amplifiers.
-zaus teb. Nws twb tau hais nyob rau hauv tsab xov xwm, koj muaj peev xwm ntxiv xws li ib tug feature ntawm nws li uniformity. Qhov zoo tshaj plaws, nws yog ib txoj kab ncaj nraim mus rau abscissa nrog qhov ntsuas zaus thoob plaws hauv kev khiav hauj lwm ntau.
Cov kev txwv no txiav txim siab qhov zoo uas cov zaus qis tau tsim tawm los ntawm cov cuab yeej ua kom nrov nrov. Qee cov khoom siv suab paj nruag niaj hnub no txhob txwm tshaj tawm cov lus teb ntau zaus los tsim cov teebmeem zoo xws li txhawb nqa ntses bass thaj tsam lossis ultra-siab zaus, uas ua rau muaj kev puas tsuaj rau lub hnov lus thiab lub hlwb ua haujlwm.
