Isingeniso: Ukuhlola Ibanga Lokuzwa Lwabantu

Inzwa yomuntu yokuzwa iyikhono elimangalisayo elisivumela ukuba sizwe imisindo eminingi ehlukahlukene endaweni esihlala kuyo. Nokho, umbono wethu wokuzwa awunamingcele. Amakhono ethu okuzwa alinganiselwe ebangeni elithile lefrikhwensi, okungaphezu kwalokho imisindo engezwakali kithi. Lesi sihloko sicubungula umqondo wezinja futhi sihlola ukuthi kunini lapho abantu belahlekelwa amandla abo okukuzwa.

Ukuqonda Umqondo Wezikhwelo Zezinja

Izikhwelo zezinja zingamathuluzi akhethekile asetshenziswa ekuqeqesheni izinja nasekuxhumaneni. Ngokungafani nezimpempe ezivamile, izikhwelo zezinja zikhipha imisindo yefrikhwensi ephezulu engaphezu kobubanzi bokuzwa komuntu. Lawa maza we-ultrasonic ngokuvamile aphakathi kuka-20,000 no-40,000 Hertz, ngaphezu komkhawulo ophezulu wokubona kokuzwa komuntu. Ukuklanywa kwamakhwela ezinja kuzivumela ukuthi zikhiqize imisindo ehluke kakhulu ezinjeni kuyilapho ingezwakali kubantu.

Imisindo Yemvamisa Ephakeme Ikhiqizwe I-Dog Whistles

Izikhwelo zezinja zikhiqiza imisindo ephezulu ekwazi ukudonsa ukunaka kwenja. Ngenxa yokwakhiwa kwempempe, imvamisa ekhiqizwayo ivame ukuba ngaphezu kuka-20,000 Hertz, okuwumkhawulo ophezulu wokuzwa komuntu. Isizathu sokusebenzisa imisindo ye-high-frequency ukuthi izinja zinebanga elibanzi lokuzwa uma kuqhathaniswa nabantu. Lawa mafrikhwensi e-ultrasonic avumela ukuxhumana okuphumelelayo phakathi kwezinja nabanikazi bazo noma abaqeqeshi.

Ukuzwa Komuntu: Ibanga Lemvamisa Nokuzwela

Uhlelo lokuzwa komuntu luzwela uhla lwamaza, ngokuvamile phakathi kwama-20 Hertz kanye nama-20,000 Hertz. Amafrikhwensi aphansi ahambisana nemisindo ejulile, edumayo, kuyilapho amafrikhwensi aphezulu ahlotshaniswa nemisindo ephezulu. Lolu hlu lokuzwela luyahluka kancane kumuntu nomuntu kodwa ngokuvamile luhlala ngaphakathi kwebanga elingu-20 Hz ukuya ku-20,000 Hz. Kodwa-ke, njengoba abantu bekhula, ikhono labo lokuzwa imisindo ephezulu liyancipha.

Ukuthi Iminyaka Iwathinta Kanjani Amakhono Omuntu Okuzwa

Izinguquko ezihlobene neminyaka ekuzweni, ezaziwa ngokuthi i-presbycusis, zingathinta abantu njengoba bekhula. I-Presbycusis iyinqubo ehamba kancane, engahlehliseki ethinta ngokuyinhloko umbono wemisindo yamafrikhwensi aphezulu. Njengoba sikhula, amangqamuzana oboya amancane endlebeni yangaphakathi anesibopho sokudlulisa izimpawu zomsindo ebuchosheni ayalimala noma aguge. Lo monakalo wehlisa ukuzwela jikelele kumafrikhwensi aphezulu futhi ungaholela ekwehleni kwamakhono okuzwa.

Ukulahlekelwa Kwezindlebe Okuhlobene Neminyaka: Uhlolojikelele

Ukulahlekelwa kwezindlebe okuhlobene nobudala kuyisimo esivamile esithinta ingxenye enkulu yabantu. Kulinganiselwa ukuthi cishe umuntu oyedwa kwabathathu abaphakathi kweminyaka engu-65 no-74 unenkinga yokuzwa, futhi le nombolo ikhuphuka ifinyelele cishe koyedwa kwababili kubantu abangaphezu kweminyaka yobudala engama-75. ukuzwa okuvama futhi kancane kancane kuqhubeke kuthinte uhla olubanzi lwamafrikhwensi.

Umthelela Wokulahleka Kwezindlebe Okuhlobene Nobudala Ekuboneni Ukuzwa

Ukulahlekelwa kokuzwa kwemvamisa ephezulu ngenxa yokulahlekelwa ukuzwa okuhlobene neminyaka kunemithelela eminingana ekuboneni kokuzwayo. Abantu abanokulahlekelwa kwezindlebe okuhlobene neminyaka bangase bangakwazi ukuzwa imisindo ethile, ikakhulukazi leyo ekubanga eliphezulu lefrikhwensi. Lokhu kungaholela ebunzimeni ekuqondeni inkulumo, ikakhulukazi ezindaweni ezinomsindo, futhi kungase kubangele ukuhlukaniswa nomphakathi noma ukuphazamiseka kokuxhumana. Nokho, ukulahlekelwa kwezindlebe okuhlobene neminyaka akuthinti wonke umuntu ngendlela efanayo, futhi abanye abantu bangase bagcine amakhono okuzwa angcono kunabanye.

Ingabe Abantu Bangayibona Ikhwela Lenja Kunoma Iyiphi Iminyaka?

Ngenxa yokulinganiselwa kokuzwa komuntu kanye nomklamo wezimpempe zezinja, abantu abaningi balahlekelwa ikhono lokubona imisindo yezinja njengoba bekhula. Njengoba kushiwo ngaphambili, amakhwela ezinja akhiqiza amaza e-ultrasonic ngokuvamile angaphezu kuka-20,000 Hertz, angaphezu komkhawulo ophezulu wokuzwa komuntu. Ngakho-ke, kungakhathaliseki ubudala, abantu abaningi ngeke bakwazi ukuzwa imisindo ekhishwa impempe yenja.

Iqhaza Lokuhlola Ukuzwa Ekuhloleni Umbono Wezikhwelo Wenja

Ukuhlolwa kokuzwa kudlala indima ebalulekile ekuhloleni ikhono lomuntu lokubona imisindo yamafrikhwensi aphezulu, njengaleyo ekhishwa amakhwela ezinja. Lokhu kuhlola, okwenziwa ochwepheshe be-audiology, kubandakanya ukuchaya abantu kuhlu lwamafrikhwensi nokulinganisa izimpendulo zabo. Ngokusebenzisa amathuluzi akhethekile, izazi zokuzwa zinganquma imikhawulo ephezulu yebanga lokuzwa komuntu futhi zihlonze noma yikuphi ukulahlekelwa kwezindlebe okuhlobene neminyaka noma okunye ukuphazamiseka kwezindlebe okungase kuthinte ikhono labo lokubona imisindo yezinja.

Izici Ezithonya Ikhono Lokuzwa Izikhwelo Zezinja

Nakuba ukulahlekelwa kwezindlebe okuhlobene neminyaka kuyisici esibalulekile ekulahlekelweni ikhono lokuzwa amakhwela ezinja, ezinye izici zingase zibe nomthelela ekuboneni komuntu le misindo yefrikhwensi ephezulu. Ukuchayeka emazingeni omsindo oweqile, imithi ethile, kanye nezimo zezokwelapha ezifana ne-tinnitus noma izifo ezindlebeni kungase kube nomthelela kumakhono okuzwa. Ukwengeza, ukuhluka ngakunye esakhiweni nasekusebenzeni kwesistimu yokuzwa kungaba nomthelela ekwehlukeni kwekhono lokuzwa imisindo yamaza aphezulu.

Ezinye Izindlela Zokuhlola Umbono Wezikhwelo Wenja

Ngaphezu kokuhlolwa kokuzwa okusemthethweni, kunezindlela ezihlukile zokuhlola ikhono lomuntu lokuzwa amakhwela ezinja. Izinhlelo zokusebenza zama-smartphone kanye nokuhlolwa okuku-inthanethi kuye kwathuthukiswa ukukala imikhawulo yokuzwa kwemvamisa ephezulu. Lawa mathuluzi avumela abantu ngabanye ukuthi bahlole amakhono abo okuzwa behleli kahle emakhaya abo. Kodwa-ke, kubalulekile ukuqaphela ukuthi lezi zindlela akufanele zithathele indawo yokuhlola ukuzwa okuchwepheshile kodwa zinganikeza inkomba evamile yekhono lomuntu lokubona imisindo yamaza aphezulu.

Isiphetho: Imikhawulo Yokubona Kwabantu

Sengiphetha, ikhono lokubona imisindo yempempe yezinja liyancipha njengoba abantu bekhula. Amafrikhwensi e-ultrasonic akhiqizwa amakhwela ezinja angaphezu komkhawulo ophezulu wokuzwa kwabantu, ngokuvamile angaphezu kuka-20,000 Hertz. Ukulahlekelwa izindlebe okuhlobene nobudala, kanye nezinye izici, kungase kunciphise nakakhulu ikhono lomuntu lokuzwa imisindo yefrikhwensi ephezulu. Nakuba izivivinyo zokuzwa nezinye izindlela zokuhlola zinganikeza imininingwane embonweni wezinja, kubalulekile ukuqaphela ukulinganiselwa okungokwemvelo kokubona kokuzwa komuntu.