Kwindlela yokwenza ngokwezifiso iithiyetha zabucala, ukucutshungulwa kokufunxwa kwesandi kunye nokunciphisa ingxolo yinxalenye ebalulekileyo. Igumbi elilungisiweyo ngobuchule kunye negumbi eliqhelekileyo linokubonisa iziphumo ezahlukeneyo zesandi ngaphakathi nangaphandle. Izakhiwo ngokubanzi zisebenzisa ikhonkrithi, iiphaneli zomthi okanye izitena eziqinileyo njengezinto zodonga. Ngokuthe ngqo, ezi zinto zinokufezekisa isiphumo sokuthintela isandi, kodwa ubunzulu besiphumo buxhomekeke kubuninzi bezinto ezahlukeneyo. Kwigumbi elisebenzisa isandi elilandela imiphumo yesandi, izinto zodonga zodwa azanele ukufezekisa isiphumo sokunciphisa isandi. Nokuba yindlu enkulu okanye isakhiwo seflethi, iithiyetha zabucala ezenzelwe wena zifuna ukufunxwa kwesandi okanye ukufunxwa kwesandi. Unyango lwe-acoustic lulawula ukubonakaliswa kwamaza esandi kwigumbi, lulungisa ixesha lokuvakala ngaphakathi kwigumbi, ngaloo ndlela luphucula umgangatho wesandi wokubukela iimuvi. Masithethe ngezo zinto malunga nokufunxwa kwesandi kunye nokufunxwa kwesandi namhlanje.
Ukufunxa isandi
Sikhankanye ngokufutshane ngasentla ukuba ezinye izinto eziqinileyo zinokwenza buthathaka i-coefficient yamaza omsindo ngexesha lenkqubo yokusasaza. Ngapha koko, ukongeza ekufunxweni yimathiriyeli yangaphakathi, ezinye izixhobo zinokubonisa isandi esivakalayo kwaye sidlulisele kwelinye icala. Ukufunxa isandi kunye nokugqunyelelwa kwesandi ziindlela ezimbini ezahlukeneyo zokulawula isandi. Ukufunxa isandi kubhekisa kwisenzeko sokuphulukana namandla emva kokuba amaza esandi ebethe umphezulu wesixhobo, kwaye ukugqunywa kwesandi kubhekisa kwindlela yokunciphisa ingxolo kwindlela yokusasazwa kwamaza. Ngokulula, ukufunxa isandi kususa umlinganiselo othile wamandla esandi, kwaye ukugqunywa kwesandi kulawula ukuhanjiswa kwamaza omsindo kwelinye icala lodonga.
Xa amaza esandi ehamba emoyeni aze achukumisa umphezulu wesixhobo esifunxa isandi, inxalenye yaso iya kubonakala ize inxalenye yayo ifunxe. Iimathiriyeli ze-acoustic ezisetyenziselwa ukufunxa isandi ngokubanzi zineempawu ze-porous, kwaye eziqhelekileyo ziintsinga, amasuntswana, kunye namagwebu. Isandi sesandi sisehlo kwimibhobho emincinci engenakubalwa engaphakathi kwesixhobo, apho ibangela ukungqubana kunye neemolekyuli zomoya kunye neendonga ezingenanto, ngaloo ndlela iguqula amandla esandi abe ngamandla obushushu ukuphumeza isiphumo sokufunxa isandi. Ukongeza kwizixhobo ezithatha isandi esine-porous, kukho izakhiwo zokuva isandi kunye nezakhiwo ezikhethekileyo zokuva isandi. Ukufunxwa kwesandi seresonance kubandakanya iresonance enye, ipleyiti enemingxuma yeresonance isandi sokufunxa indlela yokufunxa isandi, ifilimu ebhityileyo yeresonance ubume beenkcukacha kunye nepleyiti encinci yeresonance isandi sokufunxa. Umgaqo wayo kwakhona kukusebenzisa isakhiwo sezinto eziphathekayo kunye nomoya ukwenza inkqubo ye-resonant ukufezekisa ukufunxa isandi.
I-coefficient yokufunxa isandi, eyaziwa ngokuba lixabiso le-NRC, ichazwa yi-American Society for Testing and Materials (ASTM). Indlela yokubala amanani ye-NRC ithatha ixabiso eliphakathi le-arithmetic le-coefficient yokufunxa isandi sezinto kwi-frequency ezine ze-250, 500, 1000 kunye ne-2000 Hz. Ekubeni i-coefficient yokufunxa isandi sezinto ezifunxa isandi isanda ngokwanda kwe-frequency, kunzima ukuba izinto ezifunxa isandi ngokubanzi zifunxe amaza esandi asezantsi. Ngokubanzi, iimveliso ezine-coefficient yokufunxa isandi engaphantsi kwe-0.2 zibizwa ngokuba zizinto ezibonisa ukukhanya, kwaye izinto ezingaphezulu kwe-0.4 zinokuthathwa njengezinto ezifunxa isandi. Abathengi kufuneka balumke xa bethenga izinto ezinomsindo ezine-coefficient yokufunxa isandi edlula i-1.0. Nangona iphezulu kakhulu kune-"umgca ofanelekileyo" we-0.4, amaxabiso edatha anjalo awachanekanga. I-American Society for Experimental Materials, eyakha ixabiso le-NRC (i-coefficient yokufunxa isandi), isebenzisa inani elithi "0" ukumela i-coefficient yokufunxa isandi sezinto ezingenakufunxa naliphi na amandla esandi esiganelweyo. Ngamanye amazwi, le nto inokubonakalisa onke amandla esandi edibana nawo. Ngokwahlukileyo koko, ukuba into ifunxa onke amandla esandi, iboniswa yinombolo "1". Enyanisweni, nayiphi na into ineempawu zokubonakalisa nokufunxa amandla esandi. U-"0" kunye no-"1" zixabiso nje elilinganiselweyo lereferensi. I-coefficient eqhelekileyo yokufunxa isandi yezinto ezifunxa isandi kufuneka ibe phakathi kwexabiso lika-0 kunye no-1. Izinto ezine-coefficient yokufunxa isandi engaphezulu kwe-1.0 zithetha ukuba ifunxa amandla esandi angaphezu kwalawo iwabonakalisayo, into engenakwenzeka ngokwasemzimbeni. Ukuba abathengi badibana neenkcazo ezinjalo, banokubuza ngokuthe ngqo ukuchaneka kwedatha.
Ukuthintela isandi
Njengoko bekutshiwo ngaphambili, ukugqunywa kwesandi kunye nokufunxa isandi ziindidi ezimbini ezahlukeneyo zolawulo lwesandi. Ngandlela ithile, ukufunxa isandi kuthathela ingqalelo ngakumbi i-coefficient yokufunxa yesixhobo ngokwaso, ngelixa ukugquma kwesandi kuthathela ingqalelo kokubini ukulahleka kokudluliselwa kodonga lokwahlula kunye neempawu zokufunxa zegumbi ngexesha lokuhanjiswa kwesandi. Ngoko ke, ayinakufana ne-coefficient yokufunxa isandi (NRC) ebalwa ngokuthatha i-avareji yamaxabiso, kodwa idinga idatha (ilahleko yokudluliselwa kwesandi kunye neempawu ze-frequency yegrafu) kunye ne-American Society for Testing and Materials ukumisela imigangatho yokuthelekisa amaxabiso aphumayo kwiklasi yokuhanjiswa kwesandi sodonga lokwahlula (STC). Nangona izibalo zihluka, ilahleko yokuhanjiswa kwesandi iyahluka ngokwe-frequency, kwaye udonga lokwahlula-hlula olusetyenziselwa ukulawula ukusasazwa kwesandi luya kunyuka ngokubanzi njengoko ukwanda kwamanani.
Kanye njengoko isandi sinokuhlala sithatyathwa okanye sibonakaliswe yimpahla, sinokuhlala sidlula eludongeni lokwahlula kwaye sidlulise isandi kwelinye icala legumbi. Ngokungafaniyo nokufunxeka kwesandi, ukuba ixabiso lereferensi yereferensi u-0 lenzelwe ukuba ibe imeko apho isandi singakhange sicingelwe, ngoko ke ixabiso elichasene nomda we-1 (apho sonke isandi siqikelelwa ngodonga lokwahlula) kunokwenzeka. Oku kunokwenzeka, umzekelo, ukuba sishiya iingcango kunye neefestile zivulekile kwigumbi. Kwigumbi elingakhuselekanga (oko kukuthi, udonga olulodwa lolwahlulo), nayiphi na i-gap ekuvuleni ingabangela ukunciphisa ilahleko yokuhanjiswa kwesandi, endicinga ukuba nonke niyayazi kwikhaya lakho okanye kwiofisi. Abantu abaninzi banokucinga ukuba ukwandisa ubukhulu beendonga zokwahlula kunokunyusa ilahleko yokudluliselwa kwesandi ngokunzulu ngakumbi, kodwa ngokomthetho womgangatho wokugquma isandi, nokuba uphinda kabini ubukhulu bodonga, isixa sokufakelwa kwesandi sinokunyuka kuphela nge-6dB.
Ngaloo ndlela, kwii-studio zokurekhoda, iithiyetha zangasese, kunye nezinye iindawo ezineemfuno eziphezulu zokuhanjiswa kwesandi, ukuyila kweendonga zokwahlula kabini yeyona ndlela iqhelekileyo. Ukwakhiwa kweendonga zokwahlula kabini kungumcimbi obuthathaka, umzekelo, phakathi kweendonga ezimbini ziya kuzaliswa ngamaleko ezinto ezahlukeneyo (njengezinto ezithatha isandi) ukuphumeza ukugquma kwesandi esingcono. Umaleko wezinto eziphathekayo kufuneka ubekwe kwindawo yomoya, ukwenzela ukuba amaza omsindo abe yi-diffusion yesibini. Ukuzalisa ngobumfama iileya eziphathekayo phakathi kweendonga ezimbini akuyi kufezekisa umphumo ofunekayo wokugquma isandi.
Ukuze ufumane ulwazi oluthe kratya malunga ne-SINOYQX Melamine Foam, nceda usiqhagamshelane nathi ku- [email protected] okanye usithumelele ilizwi ku: +86-28-8411-1861.
Eminye imifanekiso kunye nezicatshulwa zenziwe kwakhona kwi-Intanethi, kwaye i-copyright yeyombhali wokuqala. Ukuba kukho naluphi na ulwaphulo-mthetho, nceda uqhagamshelane nathi ukuze ucime.