Dareenka makarafoonka

Dareenka makarafoonku waa jawaabta korantada ee wax soo saarkeeda cod-galiyaha caadiga ah ee la bixiyay.Calaamadaha gelinta tixraaca caadiga ah ee loo isticmaalo cabbirada dareenka makarafoonka waa heerka cadaadiska codka ee 94dB (SPL) ama 1 kHz wave sine at 1 Pa (Pa, cabbir cadaadiska).Si loo helo cod-gelin go'an, amakarafoonoo leh qiime sare oo dareen leh ayaa leh heer wax soo saar ka sarreeya makarafoonka leh qiime dareen hoose.Dareenka makarafoonka (oo lagu muujiyey dB) badanaa waa taban, markaa mar kasta oo dareenka sareeyo, waa yaraanayaa qiimihiisu dhammaystiran yahay.
Waxaa muhiim ah in la ogaado unugyada ay ku jiraan qeexida dareenka makarafoonka.Haddii dareenka labada makarafoon aan lagu cayimin isla halbeeg, isbarbardhigga tooska ah ee qiyamka dareenka ma habboona.Dareenka makarafoonka analoogga ah waxaa badanaa lagu qeexaa dBV, tirada dB marka loo eego 1.0 V rms.Dareenka makarafoonka dhijitaalka ah waxaa badanaa lagu qeexaa dBFS, taas oo ah tirada dB marka loo eego wax soo saarka dhijitaalka ah ee buuxa (FS).Makarafoonnada dhijitaalka ah, signalka cabbirka buuxa waa heerka signalka ugu sarreeya ee makarafoonku soo saari karo;Qalabka Analog ee makarafoonnada MEMS, heerkani waa 120 dBSPL.Ka eeg qaybta ugu sarraysa ee cod-bixinta si aad u hesho sharraxaad dhammaystiran oo heerkan calaamad ah.
Dareenka waxaa loola jeedaa saamiga cadaadiska gelinta iyo soo saarista korantada (voltage ama digital).Makarafoonnada analoogga ah, dareenka waxaa badanaa lagu cabbiraa mV/Pa, natiijadana waxaa loo rogi karaa qiime dB:
Dareenka sare had iyo jeer macnaheedu maaha waxqabadka makarafoonka oo ka wanaagsan.Mar kasta oo ay sare u kacdo dareenka makarafoonka, waa yaraanta xad-dhaafka uu ku leeyahay inta u dhaxaysa heerka wax soo saarka iyo heerka ugu sarreeya ee wax soo saarka xaaladaha caadiga ah (sida hadalka, iwm.).Codsiyada goobta dhow (hadal dhow), makarafoonada xasaasiga ah ayaa laga yaabaa inay aad ugu nugul yihiin qallooc, taas oo inta badan yaraynaysa dhaqdhaqaaqa guud ee makarafoonka.