Nyob ntsiag to hauv kev ntxhov siab, qhov no yog lub neej uas ntau tus neeg xav tau. Ob qho kev yooj yim hauv nroog thiab kev nyob ntsiag to hauv cheeb tsam, yog li peb tuaj yeem ua tiav qhov no li cas? kuv lub teb chaws cov kev cai: Cov suab nrov ib puag ncig ntawm tsib hom hauv nroog: sanatorium, villa cheeb tsam, tsev so, 50dB (decibel) thaum nruab hnub, 40dB hmo ntuj (xa mus rau 22:00 txog 6:{{5 } } hnub tom ntej, tib yam hauv qab no); rau cov tsev nyob, kab lis kev cai thiab kev kawm Cov cheeb tsam tseem ceeb yog 55dB thaum nruab hnub thiab 45dB hmo ntuj; thaj chaw, kev lag luam, thiab kev lag luam sib xyaw: 60dB thaum nruab hnub thiab 50dB hmo ntuj; Muaj cheeb tsam: 65dB thaum nruab hnub thiab 55dB hmo ntuj. Tab sis hauv lub neej, peb feem ntau tsis tuaj yeem zam cov decibels. Lub sijhawm no, cov tsos ntawm PVC panels tau daws qhov teeb meem no rau peb.
Lub npe hu ua PVC vaj huam sib luag suab rwb thaiv tsev, muaj ntau qhov xwm txheej: yog tias qhov nruab nrab lub suab rwb thaiv tsev ntawm lub hom phiaj ntim tsawg dua 30 decibels, tab sis lub suab sib tham ib txwm nyob ib sab ntawm lub qhov rooj tuaj yeem hnov kom meej meej thiab cov ntsiab lus ntawm kev sib tham yog yooj yim to taub. , ces lub suab rwb thaiv tsev nyhuv tsis zoo heev. Yog hais tias qhov kev sib tham nrov ntawm 30 ~ 35 decibels tuaj yeem hnov zoo heev, kev sib tham ib txwm tuaj yeem hnov, tab sis nws tsis yooj yim to taub, ces lub suab rwb thaiv tsev zoo heev.
Nyob rau hauv rooj plaub ntawm 40 mus rau 45 decibels, kev sib tham nrov tuaj yeem hnov txog, tab sis tsis to taub tag nrho, thiab kev sib tham ib txwm tsis hnov. Lub suab rwb thaiv tsev zoo dua. Yog tias koj tsis tuaj yeem hnov cov lus sib tham nrov ntawm 45 ~ 50 decibels, tab sis koj tuaj yeem hnov suab nrov nrov thiab nrov xov tooj cua, ces lub suab rwb thaiv tsev zoo. Tau qhab nia 60 qhab nia. Yog tias koj tsis tuaj yeem hnov suab nrov nrov ntawm 50 ~ 55 decibels, thiab koj tsis tuaj yeem hnov lub suab nrov ntawm lub xov tooj cua, ces lub suab rwb thaiv tsev yog suav tias yog qhov zoo heev. Nws tuaj yeem siv los ua tus qauv los txiav txim lub suab rwb thaiv tsev ntawm PVC panels.
