Izinzwa ezimbili ezibaluleke kakhulu ukukwazi ukubona nokuzwa. Ngezindlebe zethu, singathola izinguquko zomsindo kusuka ekuhlekeleni okunciphisa kakhulu kuze kuqhume ukuduma okukhulu kakhulu.
Indlela esiyizwayo
Nokho, ngaphezu kwekhono lokuzwa, yindlela esizwa ngayo.
Umsindo (okuyinto amagagasi ohamba emoyeni, amanzi, noma enye ehambisanayo) ifinyelela engxenyeni yangaphandle yezindlebe zethu, ewufaka emgodini we-ear ear to the eardrum.
Yini Enquma Ukuphakama Kwezwi
Yeka ukuthi umsindo okhulu kangakanani unqunywa yizinto eziningi, ezihlanganisa inhlanganisela yenani elifinyelela endlebeni kusukela kumsunguli womsindo, futhi ibanga lezindlebe zethu kusuka endaweni yokuqala yomsindo.
I-Decibel Scale
Ukuze uhumushe inqubo yokwamukela umsindo, isilinganiso, esaziwa njenge-decibel, sakhiwe.
Izindlebe zethu zithola izinguquko ngevolumu ngendlela engefani. I-decibel iyisilinganiso se-logarithmic sokuphakama okukhulu. Uhlobo oluthile lwe-decibel elingu-1 lubonakala njengokushintsha okungenani kwevolumu, ama-decibel angu-3 inguquko elinganisiwe, futhi ama-decibel angu-10 aqondwa ngumlaleli njengombhalo wokuphindaphinda kabili. Ama-decibel akhethwe yizinhlamvu: dB.
0 dB iyinsika yokuzwa - Ezinye izibonelo zifaka:
- I-Whisper: 15-25 dB
- Umsindo wangemuva: cishe 35 dB
- Ikhaya elijwayelekile noma indawo ehhovisi: 40-60 dB
- Izwi elivamile lokukhuluma: 65-70 dB
- Isiphetho se-orchestral: 105 dB
- Umculo womculo we-Rock: 120 dB +
- I-Threshold yobuhlungu: 130 dB
- Izindiza ze-Jet: 140-180 dB
Indlela i-Decibel Scale isetshenziswa ngayo
Isilinganiso se-decibel sisetshenziselwa imvelo yendawo yaseshashalazini ngendlela elandelayo:
Ukuze ama-amplifiers, ama-decibel abonisa isilinganiso sokuthi kuthatha amandla amangakanani ukukhiqiza izinga elilodwa lokukhipha umsindo. Noma kunjalo, kukhona into ethakazelisayo yokukhomba.
Ukuze omunye amplifier noma owamukelayo abe kabili ngokuzwakalayo njengenye, udinga izikhathi 10 more wattage okukhiphayo. I-Receiver nge-100 WPC ikwazi ukuphindwe kabili izinga levolumu ye-10 WPC amp. I-receiver ene-WPC eyi-100 idinga ukuba yi-1,000 WPC ibe kabili ngokuzwakalayo. Ukuze uthole imininingwane eyengeziwe mayelana nokuthi izilinganiso zamandla we-amplifier zithinta kanjani ukusebenza, funda i-athikili: Ukuqonda Imininingwane Yokhipha Amandla .
Ngesicelo esicacile kakhulu, ama-decibel asetshenziselwa maqondana nokukwazi ukuphuma komsindo wamacrosoft kanye nama-subwoofers ngezikhathi ezithile, emazingeni amavolumu athile. Isibonelo, isikhulumi singase sibe namandla okukhipha uhla lwamamitha angu-20 Hz kuya ku-20kHz, kodwa ngezikhathi ezingaphansi kuka-Hz 80, izinga lokukhipha umsindo lingase libe - 3dB phansi ngokukhipha ivolumu. Lokhu kungenxa yokuthi okunye okukhipha amandla kudingekile kuma freecencies aphansi ukukhiqiza izinga levolumu elifanayo.
Futhi, izinga le-dB lisetshenziselwa ikhono lokukhishwa kwezinga lokuzwakalayo lesikhulumi esithile lapho ludla ithoni ethathwa ngenye yamandla.
Isibonelo, isikhulumi esingaveza 90 dB noma ngaphezulu kokukhipha umsindo uma sisondeza isignali yomsindo we-watt kubhekwa ukuthi sinokuzwela okuhle.
Kodwa-ke, ngenxa yokuthi isikhulumi sinokuzwela okuhle asizihlolisisi ngokuzenzakalelayo uma ngabe "sikhulumi" esihle. Isikhulumi esidinga amandla amaningi ukukhiqiza umsindo uveza nje inani lamandla adingekayo ukuze isikhulumi senze umsindo ozwakalayo. Ezinye izici, kufaka phakathi impendulo yemvamisa, ukuphazamiseka, ukuphathwa kwamandla, nokwakhiwa kwezikhulumi, kubalulekile futhi.
Ngaphezu kwalokho, ukuze kusetshenziswe amavidiyo, i-decibel scale isetshenziselwa ukulinganisa ukuthi umsindo okhishwa yi-fan cooling. Isibonelo, uma iprojector yevidiyo inesilinganisweni somsindo we-20dB noma ngaphansi, lokho kuthathwa njengokuthula kakhulu. Ngaphandle kokuthi uhlezi eduze, akufanele ukwazi ukuzwa lo fan - futhi uma wenza, akufanele ukuphazamise.decibels
Indlela Yokulinganisa I-Decibels
Manje ukuthi unomqondo wokuthi yiziphi i-decibel kanye nokuthi zibandakanya kanjani ekuhlangenwe nakho okulalelwayo komculo nekhaya lasekhaya, umbuzo uwukuthi "Ungabalinganisa kanjani?".
Kubathengi, i-decibel yendlela eyodwa ingalinganiswa iwusebenzisa imitha yemisindo ephathekayo (efana neyayiboniswe esithombeni esingenhla esixhunyiwe kulesi sihloko.
Njengoba izamukeli eziningi zendawo yaseshashalazini zakhiwe-ku-jeneretha yezwi lokuhlola, ungasebenzisa lawo matoni ukucacisa izinga le-decibel elakhiwe isikhulumi ngasinye ekulungiseleleni kwezinga levolumu. Uma unquma izinga le-decibel elenziwe yisipikha ngasinye, ungakwazi ukulungisa amazinga womthamo wesipikha ngamunye ukuze sonke isistimu isetshenziswe. Lapho zonke izikhulumi zakho zibhalisa izinga elifanayo le-decibel ezingeni levolumu elinikeziwe, isipiliyoni sakho sokulalela umsindo sizolinganiswa.
Izibonelo zamamitha omculo zihlanganisa:
Ama-reed Instruments Sound Meter - Thenga kusuka ku-Amazon
Imikhiqizo ye-BAFX Isisekelo Semitha Yomsindo - Thenga kusuka ku-Amazon
Extech 407730 Sound Meter - Thenga kusuka ku-Amazon
Ulwazi oluningi
Kumele kuboniswe ukuthi ama-decibel anesilinganiso esisodwa sokuthi umsindo uphiqizwa kanjani futhi wenziwa kabusha ekuzijabuliseni ekhaya. Ukuze uthole umbono obanzi ngokwengeziwe wezobuchwepheshe kwi-decibel kanye nokukhiqizwa okuzwakalayo endaweni yemidlalo yaseshashalazini, hlola lesi sihloko: I-Decibel (dB) Isilinganiso / Imithetho Yomsindo 101 (Audioholics).
Futhi, thola ukuthi i-decibel isetshenziswa kanjani ekulinganiseni amandla wezimpawu zeWifi .