Cov ntaub ntawv kho mob acoustical tuaj yeem muab faib ua cov khoom siv suab nrov, cov ntaub ntawv diffusion thiab cov ntaub ntawv suab rwb thaiv tsev raws li lawv txoj haujlwm.Ntawm lawv, cov khoom siv suab-absorbing tsis yog tsuas yog cov pa suab-absorbing phaj xwb, tab sis kuj yog cov cuab yeej qis uas feem ntau yog siv los nqus cov zaus tsawg.Ua ntej tshaj plaws, peb yuav tsum paub tias lub suab yuav txuas ntxiv mus li cas tom qab nws tau kis mus rau peb cov phab ntsa.
Teeb meem suab-rov qab suab = suab absorption coefficient
Teeb meem suab-hloov suab = kis tsis tau
Qee lub suab yog nqus los ntawm phab ntsa thiab tig mus rau hauv lub zog cua sov.
Los ntawm kev sib raug zoo saum toj no, nws tsis yog qhov nyuaj rau pom tias lub suab rwb thaiv tsev tsuas tuaj yeem ua kom lub suab kis tau me me li sai tau, tab sis nws tsis tas yuav muaj lub suab nrov zoo.
suab absorbing khoom
Cov khoom siv suab nrov yog cov khoom ntxeem tau, los yog lub npe scientific yog acoustic tsis kam suab-absorbing cov ntaub ntawv.Lub ntsiab lus ntawm lub suab nthwv dej yog ib hom kev co, hais lus raws nraim, nws yog huab cua kev co rau cov neeg hais lus.Thaum huab cua vibration kis mus rau cov khoom siv suab nrov no, nws yuav maj mam txo los ntawm cov qauv pore zoo thiab hloov mus rau hauv lub zog cua sov.
Feem ntau hais lus, lub thicker lub suab-absorbing cov ntaub ntawv yog, qhov ntau qhov me me nyob rau hauv cov kev taw qhia ntawm lub suab propagation, thiab qhov zoo dua qhov nqus ntawm suab tshwm sim tam sim ntawd los yog ntawm lub kaum sab xis me me.
Cov khoom siv diffusion
Thaum lub suab raug teeb meem ntawm phab ntsa, qee lub suab yuav tawm mus raws li cov lus qhia geometric thiab txuas ntxiv mus, tab sis feem ntau cov txheej txheem no tsis yog qhov "specular reflection".Yog hais tias nws yog ib qho zoo tagnrho xav txog, lub suab yuav tsum tawm tag nrho nyob rau hauv lub geometric kev taw qhia tom qab dhau los ntawm qhov chaw, thiab lub zog nyob rau hauv cov kev taw qhia tawm yog zoo ib yam nrog rau qhov teeb meem kev taw qhia.Tag nrho cov txheej txheem tsis poob lub zog, uas tuaj yeem nkag siab tias tsis muaj qhov sib txawv ntawm txhua qhov, lossis ntau dua li qhov xav tau tshwj xeeb hauv optics.
suab insulating khoom
Lub suab rwb thaiv tsev thiab lub suab nqus cov khoom ntawm cov khoom sib txawv.Cov khoom siv suab nrov feem ntau siv cov qauv pore hauv cov khoom siv.Txawm li cas los xij, tus qauv pinhole no feem ntau ua rau kev sib kis thiab nthuav tawm ntawm lub suab tsis muaj zog.Txawm li cas los xij, txhawm rau tiv thaiv lub suab los ntawm kev xa mus ntxiv los ntawm cov khoom siv, nws yog ib qho tsim nyog yuav tsum tau txo cov kab noj hniav kom ntau li ntau tau thiab ua kom qhov ntom ntawm cov khoom.
Feem ntau, lub suab rwb thaiv tsev kev ua tau zoo ntawm cov ntaub ntawv rwb thaiv tsev suab yog cuam tshuam nrog qhov ntom ntawm cov ntaub ntawv.Kev yuav cov khoom siv hluav taws xob uas muaj suab nrov tuaj yeem txhim kho lub suab rwb thaiv tsev ntawm chav tsev.Txawm li cas los xij, ib txheej txheej suab rwb thaiv tsev qee zaum tseem muaj kev txwv.Lub sijhawm no, kev kho ob-txheej suab rwb thaiv tsev tuaj yeem siv tau, thiab cov ntaub ntawv damping ntxiv tuaj yeem muab ntxiv rau ob txheej suab rwb thaiv tsev.Txawm li cas los xij, nws yuav tsum tau muab sau tseg tias ob txheej ntawm cov ntaub ntawv rwb thaiv tsev yuav tsum raug zam kom ntau li ntau tau los txais yuav tib lub thickness, thiaj li tsis txhob rov ua dua ntawm qhov sib tsoo ntau zaus.Yog hais tias nyob rau hauv tiag tiag kev tsim kho thiab kho kom zoo nkauj, tag nrho lub tsev yuav tsum tau soundproofed ua ntej, thiab ces lub suab nqus thiab diffusion kho yuav tsum tau nqa tawm.
Post lub sij hawm: Apr-03-2023