Macnaha qaamuuska ee ereyga "diffusor" (sidoo kale loo higaadiyay "diffuser") waxa uu tilmaamayaa aalad ama walax faafinaysa ama firdhisa shay, sida iftiinka, dhawaaqa, ama udgoonka, jihooyin badan ama meel ballaadhan.Marka loo eego acoustics-ka, faafiye waa qalab ama guddi loo isticmaalo in lagu kala firdhiyo mowjadaha dhawaaqa jihooyin kala duwan, taas oo yaraynaysa dhibaatooyinka dhawaaqa sida dhawaaqa dhawaaqa, hirarka taagan, iyo guuxa guuxa.In sawir-qaadid, faafintu waa shay dahsoon oo loo isticmaalo in lagu jilciyo ama lagu faafiyo iftiinka iftiinka ama isha kale ee iftiinka, taasoo keenta iftiin aad u siman oo dabiici ah oo mawduuca ah. Aalad hawada ku kala firdhisa saliidaha lagama maarmaanka ah, abuura jawi wanaagsan oo nasasho leh.