Ukuqina komsindo - izinkinga nezixazululo
1. Amaphuzu u-A no-B atholakala kumamitha angu-4 namamitha angu-9 ukusuka emthonjeni womsindo. Uma u-I A no-I B benamandla ephuzwini u-A nephuzwini u-B, khona-ke u-I A : I B =…
Kwaziwa:
Ibanga lephuzu A ukusuka emthonjeni womsindo (r A ) = amamitha angu-4
Ibanga lephuzu B ukusuka emthonjeni womsindo (r B ) = amamitha angu-9
Ubukhulu bomsindo endaweni A = I A
Ubukhulu bomsindo endaweni B = I B
Kufunwa: I A : I B
Isixazululo:
I A r A 2 = I B r B 2
I A 4 2 = I B 9 2
I A 16 = I B 81
I A / I B = 81/16
2. Ubukhulu bomthombo womsindo buyi-10 −9 Wm −2 . I o = 10 −12 Wm −2 . Liyini izinga lomsindo lemithombo yemisindo eyi-10?
Isixazululo:
Kwaziwa:
I = 10 -9 W/m 2
I o = 10 -12 W/m 2
x = i-10
Okuyaziwayo: Izinga lomsindo (β)
Isixazululo:
3. Izinga lomsindo lomthombo womsindo lingu-10 dB. Ungakanani umfutho wemithombo yomsindo eyi-1000? Umfutho omncane Io = 10 −12 Wm −2.
Kwaziwa:
β = 10 dB
I o = 10 -12 W/m 2
x = i-1000
Okufunwayo : Ukuqina
Isixazululo:
Ubukhulu bomthombo womsindo:
Ubukhulu bemithombo yomsindo eyi-1000:
I = (1000)(10 -11 ) = (10 3 )(10 -11 )
I = 10 -8 W/m 2
4. Izinga lomsindo lika-A lingu-40 dB, kanti izinga lomsindo lika-B lingu-60 dB. I o = 10 -12 W m -2 . Thola i-100β A : 10β B.
Kwaziwa:
Izinga lomsindo le-A = 40 dB
Izinga lomsindo lika-B = 60 dB
I o = 10 -12 W m -2.
Okufunwayo : 100β A : 10β B
Isixazululo:
Izinga lomsindo lika-100 A:
β = 40 + 10 ilogi 100
β = 40 + 10 ilogi 10 2
β = 40 + (2)(10)(ilogi 10)
β = 40 + (2)(10)(1)
β = 40 + 20
β = 60 dB
Izinga lomsindo lika-10 B:
β = 60 + 10 ilogi 10
β = 60 + 10 ilogi 10 1
β = 60 + (1)(10)(ilogi 10)
β = 60 + (1)(10)(1)
β = 60 + 10
β = 70 dB
β A : β B
60: 70
6: 7
5. Uma iphuzu P lingumthombo womsindo, khona-ke isilinganiso sokuqina komsindo kumaphuzu S, R, kanye no-Q singu …
Kwaziwa:
Ibanga lephuzu Q kusuka emthonjeni womsindo (r)Q) = amamitha angu-3
Ibanga lephuzu R ukusuka emthonjeni womsindo (r R ) = amamitha ayi-6
Ibanga lephuzu S ukusuka emthonjeni womsindo (r S ) = amamitha angu-5
Ukuqina komsindo endaweni ethi Q = I Q
Ukuqina komsindo endaweni R = I R
Ukuqina komsindo endaweni S = I S
Okufunwayo: Ukuqhathaniswa kokuqina komsindo kumaphuzu S, R, kanye no-Q (I S : I R : I Q )
Isixazululo:
Ukuqina komsindo endaweni ethi S:
Ukuqina komsindo endaweni R:
Ukuqina komsindo endaweni ethi Q :
Ukuqhathanisa ukuqina komsindo kumaphuzu S, R, kanye no-Q:
6. Iphuzu A lingu-P elivela emthonjeni womsindo, iphuzu B lingu-2P elivela emthonjeni womsindo kanye nephuzu C lingu-4P elivela emthonjeni womsindo. Ukuqhathanisa ukuqina komsindo ku - A, B, kanye no-C kungu …
Kwaziwa:
Ibanga eliphakathi A nomthombo womsindo (r A ) = P
Ibanga lebanga B kusuka emthonjeni womsindo (r B ) = 2P
Iphuzu lebanga C kusuka emthonjeni womsindo (r C ) = 4P
Ukuqina komsindo endaweni A = I A
Ukuqina komsindo endaweni B = I B
Ukuqina komsindo endaweni C = I C
Okufunwayo: Ukuqhathaniswa kokuqina komsindo ku -A, B, kanye no-C (I A : I B : I C )
Isixazululo:
Ukuqina komsindo endaweni A:
Ukuqina komsindo endaweni B:
Ukuqina komsindo endaweni ethi t C:
Ukuqhathanisa ukuqina komsindo ku -A, B, kanye no -C:
7. Abantu abayi-100 bebecula. Uma izinga lomsindo womfundi oyedwa lapho ecula lingu-40 dB (uma sicabanga ukuthi ingane ngayinye iyafana), khona-ke umfutho womsindo ophumayo ungu-... (I o = 10 -12 Wm -2 )
Kwaziwa:
Izinga lokuqina komfundi oyedwa (TI) = 40 dB
I o = 10 -12 W/m 2
Inani labafundi (x) = 100
Okufunwayo: Umsindo oqinile wabafundi abayi-100
Isixazululo:
Umsindo oqinile womfundi:
Umsindo oqinile wabafundi abayi-100:
I x = (x)(I)
I x = (100)(10 -8 ) = (10 2 )(10 -8 )
I x = 10 -6 W/m 2
8. Umsindo oqinile wemishini efanayo eyi-100 u- 10 -7 Watt.m -2 . Uma u-I o = 10 -12 Watt.m -2 , khona-ke izinga lomsindo oqinile womshini li…
Kwaziwa:
Ukuqina komsindo wemishini eyi-100 (I x ) = 10 -7 Watt.m -2
I o = 10 -12 W/m 2
Inani lemishini (x) = 100 = 10 2
Okudingekayo : Izinga lomsindo womshini (i-TI)
Isixazululo:
Ukuqina komsindo womshini:
I x = (x)(I)
10 -7 = (10 2 )(I)
I = 10 -7 / 10 2 = (10 -7 )(10 -2 ) = 10 -9
Izinga lomsindo womshini (TI):
9. Ubukhulu bomsindo bomthombo womsindo bungu- 6 x 10 -6 W/cm2 . Uma izinga lobukhulu bomsindo likhuliswa ngo-10 db, nquma ubukhulu bomsindo.
Kwaziwa:
Ukuqina (I) = 6 x 10 -6 W/ cm2
I o = 10 -12 W/m 2 = 10 -12 W / 10 4 cm 2 = 10 -16 W/cm 2
Okufunwayo: Ukuqina komsindo
Isixazululo:
Ukwengezwa komsindo oqinile ongu-10 W/m 2 = 10 -3 W/cm 2 kufana nokwengezwa kwezinga lomsindo oqinile ongu-10 dB. Ukwengezwa komsindo oqinile ongu-10 2 W/m 2 = 10 -2 W/cm 2 kufana nokwengezwa kwezinga lomsindo oqinile ongu-20 dB. Njalo njalo.
Uma izinga lokuqina likhushulwa ngo-10 dB, ukuqina kukhuphuka ngo-10 -3 W/cm2 . Ngakho ukuqina kuba ngu -6 x 10 -6 W/cm2 ) + ( 10 -4 W/cm2 ) = (6 x 10 -6 W/cm2 ) + (100 x 10 -6 W/cm2 ) = 106 x 10 -6 W/ cm2.
10. Umqapheli A uqhele ngamamitha ama-5 ukusuka emthonjeni womsindo. Ngenkathi umqapheli B eqhele ngamamitha ayi-10 ukusuka emthonjeni womsindo ofanayo. Ngakho-ke isilinganiso sokuqina komsindo esizwiwa abaqapheli B no-A...
Kwaziwa:
Ibanga lika-A ukusuka emthonjeni womsindo (r A ) = amamitha angu-5
Ibanga lika-B ukusuka emthonjeni womsindo (r B ) = amamitha ayi-10
Okufunwayo: Isilinganiso sokuqina komsindo esizwiwa ababukeli B no-A
Isixazululo:
I B : I A = 1: 4
Impendulo efanele ngu-B.
- Kuyini ukuqina komsindo futhi kuhluke kanjani ekuqineni komsindo?
- Impendulo: Ukuqina komsindo kuyisilinganiso samandla omsindo ngendawo ngayinye, ngokuvamile kulinganiswa ngama-watts ngemitha yesikwele (W/m2). Umsindo, ngakolunye uhlangothi, uwumbono womuntu siqu wamandla omsindo, ngokuvamile olinganiswa ngama-decibel (dB). Nakuba umfutho uwukulinganisa okungokoqobo, okungokoqobo, umsindo uwukuhlangenwe nakho komuntu siqu okungahluka phakathi kwabantu.
- Umthetho wesikwele ophambene uhlobana kanjani nokuqina komsindo?
- Impendulo: Umthetho wesikwele ophambene uthi ukuqina komsindo kwehla ngesikwele sebanga ukusuka emthonjeni. Lokhu kusho ukuthi njengoba uqhubeka nomthombo, ukuqina kwehla ngokushesha.
- Kungani imisindo emibili enamandla afanayo ingabi nomsindo ofanayo obonwayo?
- Impendulo: Indlebe yomuntu inokuzwela okuhlukile kumaza ahlukene. Ngakho-ke, noma ngabe imisindo emibili inomfutho ofanayo kodwa amaza ahlukene, ingase ibonakale inamazinga ahlukene omsindo.
- Ukuqina komsindo kuhlobana kanjani nokuphakama kwegagasi lomsindo?
- Impendulo: Ubukhulu bomsindo buhambisana ngqo nesikwele sobukhulu begagasi lomsindo. Uma ubukhulu begagasi lomsindo buphindwe kabili, ubukhali buzokwanda ngesilinganiso sesine.
- Kungani ukuhleba ekamelweni elithule kungase kuzwakale kahle, kodwa ukuhleba okufanayo eduze kwempophoma edumayo kungezwakali?
- Impendulo: Lokhu kungenxa yomehluko emazingeni omsindo wangemuva. Ekamelweni elithule, izinga lomsindo wangemuva liphansi, okuvumela ukuthi umsindo uvele. Eceleni kwempophoma, umsindo onamandla ufihla umsindo othule, okwenza ungezwakali.
- Uyini umkhawulo wokuzwa kanye nomkhawulo wobuhlungu maqondana nokuqina komsindo?
- Impendulo: Umkhawulo wokuzwa umsindo othule kakhulu ongazwiwa yindlebe yomuntu evamile, ngokuvamile ngamandla acishe abe ngu- . Umkhawulo wobuhlungu, omelela amazinga omsindo angabangela ubuhlungu kanye nomonakalo ongaba khona endlebeni, ususeduze .
- Kungani imisindo ibonakala ithule kakhulu uma izwakala odongeni noma kwenye isithiyo?
- Impendulo: Uma amaza omsindo ehlangana nesithiyo, amanye amandla ayabonakaliswa, amuncwe, futhi adluliselwe. Ukumuncwa nokubonakaliswa kunciphisa ukuqina komsindo odluliselwa ngesithiyo, okwenza umsindo uzwakale uthule.
- Imvamisa ithinta kanjani ukuqina komsindo odonswa yizinto?
- Impendulo: Izinto ezahlukene zinezilinganiso zokumunca ezihlukene zamaza ahlukene. Isibonelo, amaza aphansi (imisindo ye-bass) kunzima ukuwamunca futhi angangena kalula ezindongeni kunezaza eziphezulu.
- Kungani izindawo zamakhonsathi nezindawo zemidlalo yeshashalazi zitshala imali ekuvimbeleni umsindo kanye nokwelashwa kwe-acoustic?
- Impendulo: Ukuvimbela umsindo kusiza ukuvimbela umsindo wangaphandle ongadingeki futhi kuvimbela umsindo ukuthi ungaphumi ngaphandle, okuqinisekisa ukuthi umsindo ofunwayo kuphela ozwakala ngaphakathi kwendawo. Ukwelashwa kwe-acoustic kusiza ekulawuleni ukubonakaliswa komsindo ngaphakathi kwendawo ukuqinisekisa ukusatshalaliswa komsindo okucacile nokulinganayo.
- Ubukhulu bomsindo buhlobene kanjani nomonakalo ongase ube khona wokuzwa?
- Impendulo: Ukuchayeka isikhathi eside emazingeni omsindo anamandla aphezulu kungaholela ekulimaleni noma ekulahlekelweni ukuzwa. Ukuqina kanye nobude bokuchayeka kokubili kudlala indima; ngisho nokuchayeka isikhathi esifushane emisindweni ephezulu kakhulu kungabangela umonakalo ohlala njalo, kanti ukuchayeka isikhathi eside emisindweni ephezulu ngokulinganayo nakho kungaba yingozi.
