Mwinamwake mwapezapo ndondomeko yowonjezera, kapena mwinamwake mwamvapo kapena mukuwerenga zokambirana za chiŵerengero cha phokoso-phokoso. Kawirikawiri ndifupikitsidwa monga SNR kapena S / N, mfundoyi ingawonekere kwa ogulitsa ambiri. Ngakhale masamu pambuyo pa chiwonetsero cha phokoso ndi luso, lingalirolo silo, ndipo phindu limeneli lingakhudze khalidwe lonse lakumveka.
Kufotokozera Phokoso Loyera
Chiŵerengero cha phokoso cha phokoso chikuyerekezera mphamvu ya chizindikiro cha mphamvu ya phokoso. Nthawi zambiri amavomerezedwa ngati mlingo wa decibels (dB) . Manambala apamwamba amatanthauzira bwino, chifukwa pali zambiri zowonjezera (chizindikiro) kusiyana ndi deta yosafunika (phokoso).
Mwachitsanzo, pamene gawo la audio limatchula chiŵerengero cha phokoso la phokoso la 100 dB, zikutanthauza kuti mlingo wa chizindikiro cha audio ndi 100 dB kuposa msinkhu wa phokoso. Mafotokozedwe a 100 dB ofunikira phokoso ndi abwino kwambiri kuposa 70 dB (kapena osachepera).
Mwachitsanzo, tiyerekeze kuti mukukambirana ndi munthu wina ku khitchini zomwe zimakhala ndi firiji. Tiyeneranso kunena kuti firijiyi imapanga 50 dB ya hum (taganizirani izi ngati phokoso) pamene imapangitsa kuti mkati mwake mukhale ozizira-friji yaikulu. Ngati munthu amene mukumuuzayo akusankha kukambirana naye (onetsetsani izi ngati chizindikiro) pa 30 dB, simungathe kumva mawu amodzi chifukwa akugonjetsedwa ndi firiji! Kotero, mumupempha munthuyo kuti alankhule mokweza, koma ngakhale pa 60 dB, mukhoza kukhala mukuwapempha kuti abwereze zinthu. Kuyankhula pa 90 dB kungawoneke ngati mfuu yofuula, koma osachepera mawu adzamveketsedwa bwino. Ndilo lingaliro la chiŵerengero cha phokoso-phokoso.
Chifukwa Chake Kulirira Phokoso N'kofunika
Mafotokozedwe a chiŵerengero cha phokoso-phokoso amapezeka m'magulu ambiri ndi zigawo zikuluzikulu zomwe zimakhudzana ndi mawu monga oyankhula, matelefoni (opanda waya kapena ena), matelofoni, ma microphone, amplifiers , ovomereza, turntables, ma radio, CD / DVD / Makhadi omvetsera PC, mafoni, mapiritsi, ndi zina. Komabe, si onse opanga kupanga chidziwitso ichi mosavuta.
Phokoso lenileni nthawi zambiri limakhala loyera kapena lamagetsi pamtundu kapena static, kapena ntchentche kapena yotupa. Lembani liwu la okamba anu ponseponse pamene palibe chomwe chikusewera-ngati mukumva nyimbo, ndiye phokoso, lomwe nthawi zambiri limatchedwa "phokoso la phokoso." Mofanana ndi firiji muzofotokozedwa kale, pansi phokosoli nthawi zonse.
Malingana ngati chizindikiro cholowera chili ndi mphamvu komanso pamwamba pa phokoso, phokoso lidzatha kukhala ndi khalidwe lapamwamba. Ndiwo mtundu woimira phokoso la phokoso anthu amafuna kumva molondola komanso molondola.
Koma ngati chizindikiro chimakhala chofooka, ena angaganize kuti kungowonjezera voliyumu kuti lipititse patsogolo. Mwamwayi, kusintha mavoti kumtunda ndi pansi kumakhudza ponse phokoso la phokoso ndi chizindikiro. Nyimboyi ingamve mofuula, komanso phokoso lomveka. Muyenera kulimbikitsa kokha mphamvu ya chizindikiro cha gwero kuti muthe kukwaniritsa zotsatira. Zida zina zimaphatikizapo hardware ndi / kapena mapulogalamu a mapulogalamu omwe apangidwa kuti apange chiŵerengero cha phokoso.
Tsoka ilo, zonse zigawo zikuluzikulu, ngakhalenso zingwe, zowonjezera phokoso la phokoso ku chizindikiro cha audio. Ndizo zabwino zomwe zapangidwira kuti phokoso likhale lotsika kwambiri kuti lipititse chiŵerengerocho. Zipangizo za Analog, monga amplifiers ndi turntables, kawirikawiri zimakhala ndi chiŵerengero chocheperapo phokoso kuposa zipangizo zamagetsi.
Ndikoyenera kupeŵa zinthu zomwe zimakhala zosauka kwambiri. Komabe, chiŵerengero cha phokoso sichiyenera kugwiritsidwa ntchito monga chokhacho chokha kuti muyese khalidwe la zomveka la zigawozo. Kuyankha kwafupipafupi komanso kusokonezeka kwa chiyanjano kumaganiziranso.