Ngokombono wokhuselo lokusingqongileyo, zonke “zandi ezingafunwayo” ezichaphazela ufundo oluqhelekileyo lwabantu, umsebenzi, nokuphumla kwiimeko ezithile zibizwa ngokudibeneyo njengengxolo.Okufana nokutshiswa koomatshini, ukubethelwa kweenqwelo-mafutha ezahlukahlukeneyo, ingxolo yabantu nezandi ezahlukeneyo zequbuliso, njalo njalo, zonke zibizwa ngokuba yingxolo.Ngophuhliso lwemveliso yemizi-mveliso, ezothutho, nolwakhiwo lwasezidolophini, kunye nokwanda koxinano lwabemi, ukwanda kwezixhobo zekhaya (umabonwakude, njl.njl.), ingxolo yokusingqongileyo iye yanda kakhulu, kwaye iye yaba yingozi enkulu yoluntu ukuba ingcolisa imekobume yentlalo yoluntu.Uhlolisiso luye lwafumanisa ukuba ingxolo engaphezu kwee-decibels ezingama-85 iya kubangela abantu bakhathazeke, abantu bazive benengxolo, ngoko ke abakwazi kugxila emsebenzini, nto leyo ebangela ukuba umsebenzi ucutheke.

Ke ngoko, abantu bafuna imveliso efunxa isandi esiphakamileyo ukunciphisa indawo yengxolo kwaye bazive bekhululekile.Iimveliso ezifunxa isandi esiphezulu yibhodi yesilingi ye-mineral fiber, i-fiber glass siling board, i-rock wool siling board, njl.Akukho mahluko ubalulekileyo phakathi kwabo.Umgaqo wokufunxa isandi kukushiya umjelo ofikelelekayo wesandi, umjelo oqulunqwe yimingxuma emincinci engenakubalwa edityaniswe kunye, okanye imicu engenakubalwa egqithelweyo.Zixutywe kunye ukuze zenze izikhewu ezingenakubalwa ezincinci, kodwa sakuba isandi singenile, asikwazi ukuphuma.Ngenxa yokuba le ndawo imdaka kakhulu kwaye inde, isandi siyagrumba kwaye sibethe ngasekhohlo nasekunene.Kwinkqubo, ngokuthe ngcembe idla amandla kwaye ibe nefuthe lokufunxa isandi.Izandi zezandi ezahlukeneyo zifunxwa kwiimeko ezahlukeneyo.Izandi zezandi eziphezulu ezinobude obufutshane kwaye zinokufunxeka lula, ngelixa izandi zezandi ezisezantsi zinobude obude kwaye zinokungena lula kwimiqobo.Kwizandi ezisezantsi, akunzima nje ukuvala isandi, kodwa kunzima ukufunxa.Ayifani nesandi esinezandi eziphezulu esiya kuthi gqobhoze siphume kumajelo amancinci axineneyo, kodwa siya kujikeleza ngokulula.Kodwa okoko ujiya isixhobo esifunxa isandi ukuya kwinqanaba elithile, unokufunxa amaza aphantsi ngaphezulu kwe-130Hz.