Iukunciphisa umsindoi-coefficient (evame ukubizwa ngokuthi i-NRC) iyibanga elilodwa lezinombolo elingu-0.0-1.0, elichaza ukusebenza okumaphakathi kokumuncwa komsindo kokokusebenza.Iukunciphisa umsindoi-coefficient iyisilinganiso se-coefficient yokumunca umsindo we-Sabine elinganiswa ku-250, 500, 1000, kanye no-2000 Hz.

Inani elingu-0.0 lisho ukuthi into ayiwenzi umsindo we-mid-frequency, kodwa ibonisa amandla omsindo.Lokhu kunengqondo kakhulu kunokufezeka ngokomzimba: ngisho nezindonga zikakhonkolo eziwugqinsi zizonciphisa umsindo, futhiukunciphisa umsindoi-coefficient ingaba ngu-0.05.

Ngokuphambene, i-coefficient yokunciphisa umsindo engu-1.0 isho ukuthi indawo engaphezulu ye-acoustic (ku-sabin njengeyunithi) ehlinzekwa yinto elingana nendawo yayo engokoqobo enezinhlangothi ezimbili.Leli banga liwumsebenzi ojwayelekile wezisetshenziswa ezimunca umsindo ezinombobo (njengephaneli ye-fiberglass egoqwe ngendwangu ewugqinsi engama-intshi angu-2).Lokhu okuqukethwe kungafinyelela inani le-coefficient yokunciphisa umsindo elikhulu kuno-1.00.Lokhu kuyiphutha enqubweni yokuhlola, futhi kuwumkhawulo wencazelo ye-acoustician yeyunithi eyisikwele kunesici sento ngokwayo.

Isici sokunciphisa umsindo sisetshenziswa kakhulu ukuhlola ukusebenza kwe-acoustic okuvamile kosilingi lwe-acoustic, izingxenye, izibhengezo, izikrini zasehhovisi, namaphaneli odonga e-acoustic.Ngezinye izikhathi kusetshenziselwa ukuhlola ukumbozwa kwephansi.Nokho,ukunciphisa umsindokuphelaukunciphisa umsindo, enganciphisa ngempumelelo umsindo kubantu, kodwa ayikwazi ukuwuvala ngokuphelele umsindo.Kusadingeka ukuthola izinto ezisebenzayo ezimunca umsindo.

Ngakho-ke yiziphi izinto eziphezulu ze-NRC ezimunca umsindo?I-mineral fibre ceiling board kanye ne-fiberglass board yizinto ezingcono zokumunca umsindo kanyeukunciphisa umsindo.I-nrc yebhodi ye-mineral fiber ngokuvamile imayelana ne-0.5, futhi i-nrc yebhodi ye-fiberglass ingafinyelela ku-0.9-1.0.Besingafaka izinto zosilingi ezifanele ngokwezindawo ezihlukene.