Kwizixhobo zesandi, uvakalelo lwezixhobo zesithethi lubizwa ngokuba kukukwazi kwazo ukuguqula umbane ube sisandi okanye isandi sibe ngumbane.

Nangona kunjalo, inqanaba lobuntununtunu kwiinkqubo zesandi zasekhaya alinxulumananga ngokuthe ngqo okanye alichatshazelwanga ngumgangatho wesandi.

Akunakucingelwa ngokulula okanye ngokugqithisileyo ukuba xa isithethi sinovakalelo oluphezulu, kokukhona umgangatho wesandi ungcono. Kakade ke, akunakuphikwa ngokuthe ngqo ukuba isithethi esinovakalelo oluphantsi kufuneka sibe nomgangatho wesandi ophantsi. Uvakalelo lwesithethi ludla ngokuthatha i-1 (watt, W) njengamandla esignali yokufaka. Beka imakrofoni yokuvavanya imitha e-1 ngqo phambi kwesithethi, kwaye kwisithethi esineendlela ezimbini, beka imakrofoni phakathi kweeyunithi ezimbini zesithethi. Isignali yokufaka sisignali yesandi, kwaye inqanaba loxinzelelo lwesandi elilinganisiweyo ngeli xesha buvakalelo lwesithethi.

Isithethi esinempendulo ebanzi yesandi sinamandla amakhulu okubonisa, uvakalelo oluphezulu lwenza kube lula ukuvakala, amandla aphezulu asenza sizinze kwaye sikhuselekile, sinee-curves ezilinganayo kunye noqhagamshelo olufanelekileyo nolufanelekileyo lwesigaba, olungayi kubangela ukuphazamiseka ngenxa yokusetyenziswa kwamandla angaphakathi. Ke ngoko, sinokuvelisa izandi ezahlukeneyo ngokwenene nangokwemvelo, kwaye isandi sinoluvo oluqinileyo lwe-hierarchy, ukwahlukana okuhle, ukukhanya, ukucaca, kunye nokuthamba. Isithethi esine-sensitive ephezulu kunye namandla aphezulu asilula nje ukuvakala, kodwa okubaluleke ngakumbi, inqanaba laso eliphezulu loxinzelelo lwesandi ngaphakathi koluhlu oluzinzileyo nolukhuselekileyo "lunokugquma isihlwele", kwaye inqanaba loxinzelelo lwesandi elifunekayo linokufunyanwa ngaphandle kokufuna amandla amaninzi ukuqhuba.

Kukho iintlobo ezininzi ezaziwayo zezithethi ezisebenza ngokuthembeka okuphezulu kwimarike, kodwa uvakalelo lwazo aluphezulu (phakathi kwama-84 nama-88 dB), kuba ukwanda kovakalelo kuza neendleko zokwanda kokuphazamiseka.

Ngoko ke, njengesithethi esithembekileyo, ukuqinisekisa ukuba isandi siyakwazi ukuveliswa kwakhona kunye nokukwazi ukuveliswa kwakhona, kuyimfuneko ukunciphisa iimfuno ezithile zobuntununtunu. Ngale ndlela, isandi sinokulinganiswa ngokwendalo.

I-M-15AMP Active Stage Monitor

Ngaba uvakalelo oluphezulu lwenkqubo yesandi, kokukhona lungcono, okanye kungcono ukuba phantsi?

Okukhona uvakalelo luphezulu, kokukhona lungcono. Okukhona uvakalelo luphezulu, kokukhona inqanaba loxinzelelo lwesandi lesithethi phantsi kwamandla afanayo, kwaye kokukhona isandi esikhutshwa sisithethi siphezulu. Inqanaba loxinzelelo lwesandi eliveliswa sisixhobo kwindawo ethile kwinqanaba elithile lokufaka (amandla). Inqanaba loxinzelelo lwesandi=10 * amandla elogi+uvakalelo.

Ngokusisiseko, kuyo yonke inqanaba loxinzelelo lwesandi eliphindwe kabini, inqanaba loxinzelelo lwesandi liyanda nge-1dB, kodwa kuyo yonke i-1dB enyukayo kubuntununtunu, inqanaba loxinzelelo lwesandi linokunyuka nge-1dB. Ukusuka koku, ukubaluleka kobuntununtunu kunokubonwa. Kwishishini lesandi lobuchwephesha, i-87dB (2.83V/1m) ithathwa njengepharamitha ephantsi kwaye ngokubanzi yeyezithethi ezincinci (ii-intshi ezi-5). Ubuntununtunu bezithethi ezingcono buya kudlula i-90dB, kwaye ezinye zinokufikelela ngaphezulu kwe-110. Ngokubanzi, okukhona ubukhulu besithethi bukhulu, kokukhona ububele buphezulu.

Isithethi Esipheleleyo Esineendlela Ezimbini