Iibhreyini ezinzulu zebhola ye-groove (ii-DGBBs) zisetyenziswa ngokubanzi kwizicelo ezahlukeneyo zeshishini ngenxa yokusebenza kwazo kunye nokuthembeka. Xa uxhotyiswe ngeempawu zokungabikho uthuli, ezi bherearings zibonelela ngezibonelelo ezibalulekileyo kwimeko apho izinto ezingcolileyo ezinjengothuli kunye nenkunkuma zinokulalanisa ukusebenza ngokusebenza. Ukuqonda ukusebenza kunye nezibonelelo zebhola ezinzulu zebhearings ezinzulu ze-groove kubalulekileyo