Iukunciphisa ingxoloi-coefficient (edla ngokubizwa ngokuba yi-NRC) luluhlu lwamanani olulodwa lwe-0.0-1.0, oluchaza umyinge wokufunxa isandi kwisixhobo.Iukunciphisa ingxoloi-coefficient yi-avareji ye-Sabine isandi sokufunxa i-coefficient elinganiswe kwi-250, 500, 1000, kunye ne-2000 Hz.

Ixabiso le-0.0 lithetha ukuba into ayithinteli isandi se-mid-frequency, kodwa ibonisa amandla omsindo.Oku kunombono ongaphezulu kunokuphunyezwa ngokwasemzimbeni: neendonga ezingqingqwa kakhulu zekhonkrithi ziya kusithomalalisa isandi, kunye neukunciphisa ingxoloi-coefficient inokuba yi-0.05.

Ngokuchasene noko, i-coefficient yokunciphisa ingxolo ye-1.0 ithetha ukuba indawo yomsindo we-acoustic (kwi-sabin njengeyunithi) enikezelwe yi-material ilingana nommandla wayo we-acoustic we-dimensional surface.Eli bakala sisixhobo esixhaphakileyo sezixhobo ezifunxa isandi esityebileyo (ezifana nephaneli yelaphu eshinyeneyo ye-2-intshi esongiweyo yefiberglass).Esi sixhobo sinokufikelela kwixabiso le-coefficient yokunciphisa ingxolo enkulu kune-1.00.Esi sisiphene kwinkqubo yovavanyo, kwaye ngumda wenkcazelo ye-acoustician yeyunithi yesikwere kunokuba uphawu lwemathiriyeli ngokwayo.

Into yokunciphisa ingxolo idla ngokusetyenziswa ukuvavanya ukusebenza kwe-acoustic jikelele yeesilingi ze-acoustic, izahlulo, iibhena, izikrini zeofisi, kunye neepaneli zodonga oluvakalayo.Ngamanye amaxesha isetyenziselwa ukuvavanya ukugubungela umgangatho.Nangona kunjalo,ukunciphisa ingxoloyiyo kuphelaukunciphisa ingxolo, enokunciphisa ngokufanelekileyo impembelelo yengxolo ebantwini, kodwa ayikwazi ukusivala ngokupheleleyo isandi.Kuseyimfuneko ukufumana imathiriyeli yobungcali efunxa isandi.

Ke zithini izixhobo eziphezulu ze-NRC ezifunxa isandi?Ibhodi yesilingi ye-mineral fiberglass kunye nebhodi ye-fiberglass zizixhobo ezingcono zokufunxa isandi kunyeukunciphisa ingxolo.I-nrc yebhodi ye-fiber yamaminerali ngokubanzi malunga ne-0.5, kwaye i-nrc yebhodi ye-fiberglass inokufikelela kwi-0.9-1.0.Sinokufakela izixhobo zesilingi ezifanelekileyo ngokwemeko-bume ezahlukeneyo.