Emishinini yomsindo, ukuzwela kwempahla yesipika kubizwa ngokuthi ikhono layo lokuguqula ugesi ube umsindo noma umsindo kugesi.

Kodwa-ke, izinga lokuzwela ezinhlelweni zomsindo wasekhaya alihlobene ngokuqondile noma lithonywe ikhwalithi yomsindo.

Angeke kube lula noma kucatshangwe ngokwedlulele ukuthi ukuphakama kokuzwela kwesipika, kuba ngcono ikhwalithi yomsindo.Yebo, akunakuphikwa ngokuqondile ukuthi isikhulumi esizwela kancane kufanele sibe nekhwalithi yomsindo ephansi.Ukuzwela kwesipikha kuvame ukuthatha u-1 (watt, W) njengamandla esignali yokufaka.Beka imakrofoni yokuhlola imitha elingu-1 ngqo phambi kwesipika, futhi ukuze uthole isipikha esinezinhlangothi ezimbili ezigcwele, beka imakrofoni phakathi kwamayunithi amabili esipikha.Isignali yokufaka iyisignali yomsindo, futhi izinga lokucindezela komsindo elilinganisiwe ngalesi sikhathi ukuzwela kwesipikha.

Isipika esiphendula imvamisa ebanzi sinamandla anamandla okuveza, ukuzwela okuphezulu kwenza kube lula ukuzwakala, amandla aphezulu asenza sizinze futhi siphephe, ngamajika alinganiselayo kanye nokuxhumeka kwesigaba okunengqondo nokufanelekile, okungeke kubangele ukuhlanekezela ngenxa yokusetshenziswa kwamandla ngaphakathi.Ngakho-ke, ingakwazi ukukhiqiza kabusha imisindo ehlukahlukene ngempela futhi ngokwemvelo, futhi umsindo unomqondo oqinile wokuhlelwa kwezigaba, ukuhlukana okuhle, ukukhanya, ukucaca, nokuthambile.Isipikha esizwela kakhulu namandla aphezulu akulula nje ukuzwakala, kodwa okubaluleke nakakhulu, izinga eliphezulu lokucindezela komsindo ngaphakathi kwebanga lesimo esizinzile neliphephile "lingakwazi ukuqeda isixuku", futhi izinga lokucindezela komsindo elidingekayo lingatholakala ngaphandle kokudinga futhi. amandla amaningi okushayela.

Kunezinhlobo eziningi zemikhiqizo eyaziwayo yezikhulumi ezithembekile eziphezulu emakethe, kodwa ukuzwela kwabo akuphakeme (phakathi kuka-84 no-88 dB), ngoba ukwanda kokuzwela kufika ngezindleko zokwandisa ukuhlanekezela.

Ngakho-ke njengesikhulumi esithembekile, ukuze kuqinisekiswe izinga lokuphindaphinda komsindo nekhono lokuzala, kuyadingeka ukunciphisa ezinye izidingo zokuzwela.Ngale ndlela, umsindo ungalinganiswa ngokwemvelo.

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Ingabe ukuphakama kokuzwela kwesistimu yomsindo, kungcono, noma kungcono ukwehliswa?

Ukuphakama kokuzwela, kungcono.Ukuphakama kwesipikha ukuzwela, izinga lokucindezela komsindo wesipikha likhuphuka ngaphansi kwamandla afanayo, kanye nomsindo okhishwa yisipika.Izinga lokucindezela komsindo elikhiqizwa idivayisi endaweni ethile ezingeni elithile lokufaka (amandla).Izinga lokucindezela komsindo=10 * amandla elogi+ukuzwela.

Ngokuyisisekelo, kukho konke ukuphindwa kabili kwezinga lokucindezela komsindo, izinga lokucindezela komsindo likhuphuka ngo-1dB, kodwa kukho konke ukwanda ngo-1dB kokuzwela, izinga lokucindezela komsindo lingakhuphuka ngo-1dB.Kulokhu, ukubaluleka kokuzwela kungabonakala.Embonini yomsindo okhokhelwayo, i-87dB (2.83V/1m) ithathwa njengepharamitha enezinga eliphansi futhi ngokuvamile ingeyezipikha ezinosayizi omncane (amayintshi angu-5).Ukuzwela kwezikhulumi ezingcono kuzodlula u-90dB, kanti ezinye zingafinyelela ngaphezu kuka-110. Ngokuvamile, uma usayizi wesipikha umkhulu, ukuzwela kuyanda.

Izindlela ezimbili ezigcwele zoHlelo Olugcwele Somlomo