Kumculo, i-headroom yinani lendawo okanye "umda" phakathi kwenqanaba eliphezulu kunye nenqanaba eliphakathi. I-headroom ivumela iincopho zesikhashana kwisignali ngaphandle kokuqhawula (ukuphazamisa).
Ngokomzekelo, ukuba ingoma ineyona ndawo iphakamileyo efikelela ku -3 dBFS, kunye nenqanaba eliphakathi ngu -6 dBFS, kukho i-3 dB ye-headroom.
Ingoma iya kurekhodwa kwi -3 dBFS, kwaye inqanaba eliphakathi liya kuba ngaphantsi kakhulu kunoko kwaye aliyi kliphu okanye ligqwethe ngenxa yokuba ibanjwe ngumshicileli ngaphandle kokuphakama naphi na kufuphi ne-0dBFS.
Igumbi lokulala ledijithali
Nini ushicilelo in isandi se digital, ukuba ne-headroom eyaneleyo kubaluleke kakhulu ukunqanda imiba efana nokunqunyulwa, ukuphazamiseka, kunye nezinye iindlela zokunciphisa umgangatho.
Ukuba irekhoda yakho isebenza kwi-0dBFS kodwa unencopho enkulu kwiaudiyo, iya klipu kuba akukho ndawo yimbi enokuya kuyo olo phawu. Iaudio yeDijithali ayixoleli xa kufikwa kwikliphu ngolu hlobo.
Igumbi lokuphumla lomculo ophilayo
I-Headroom isebenza ngokukhululekayo ekurekhodeni umculo ophilayo ngokubanzi. Ukuba iaudio iphezulu kakhulu kwaye iphezulu kwi-0dBFS, iya klipu.
Ukuba ne-3-6 dB ye-headroom ihlala ininzi ekurekhodweni komculo bukhoma, okoko nje irekhoda yakho inokuphatha awona manqanaba aphezulu ngaphandle kokunqunyulwa.
Kufuneka ube ne-headroom engakanani kwiirekhodi?
Ukuba awuqinisekanga ukuba ingakanani na i-headroom onokuyivumela, qala nge-6 dB kwaye ubone ukuba ihamba njani. Ukuba urekhoda into ethe cwaka kakhulu, unokuthoba i-headroom ukuya kwi-3 dB okanye nangaphantsi.
Ukuba ufumanisa ukuba isishicileli sakho siyanqunqa nange-6 dB yegumbi lentloko, zama ukunyusa inqanaba legalelo kwisishicileli sakho de kuyeke ukunqunqa.
isiphelo
Ngamafutshane, i-headroom ibalulekile ekufumaneni ukurekhoda okucocekileyo ngaphandle kokuphazamiseka. Qinisekisa ukuba une-headroom eyaneleyo yokuphepha iingxaki, kodwa ungagqibi okanye uya kugqiba ngorekhodisho olukwinqanaba eliphantsi kakhulu.
NdinguJoost Nusselder, umseki weNeaera kunye nomthengisi womxholo, utata, kwaye ndiyakuthanda ukuzama izixhobo ezitsha ngesiginkci entliziyweni yothando lwam, kunye neqela lam, ndisenza amanqaku eblogi anzulu ukusukela ngo-2020. ukunceda abafundi abathembekileyo ngokurekhoda kunye neengcebiso zesiginci.
