???? ???????

?????????? ?????
Jump to navigation Jump to search
???? ?????? ?????? ??????? ???????????? (??????) ????? ??? ?????? ?????????? (???) ?????. F ?????? ????????? ?????? (Hz) ???? ??????? ???? ????????? ????? . T ???? ?????? ????.

??????????? (Frequency) ???? ??????? ???? ??????? ???? ?????? ?????? ???? ??????? ???? ?????? ?????. ?????? ????????? ?????????? ??? ???? ??????????. ?????? ???? ???? ?? ???????? ??????? ?? ?????? ???? ?????? ????????? ????? ????. ???? ?????? ???? ???? ???? ?????????????? ??????????? ????????. ???????? ?? ????? ?????? ????? ????? ???? ??????? ?????????? 120 ??????. ???? ? ?????? ????? ????? ??????? ?????? ????? ?? ????? ???????.

??????????, ????????? [ ?????? ]

?????? ????????? ????? ??????????? (????????? ?????) ???? ?????, ??????, ???? ???????? "???????????" ???? ?????? ?????? ????? ?????? ?????. ????? ????????? , ?????????? ?????????? ???? ???? ????????? , ????? , ?????? ???? ??????? ????????????? ????????? ?????? ?????? f ?????? ???? ?????? ?????? (????) ?????? ??????????.

?????: ????? ???????? ?????? ?????? (?????) ?????? ??????????. SI ?????? ?????????/????? (???? / ??).

SI ???????? ?????????????? ??????? ?????? ????? ???????????? ???????? ???????? ???? ??? "?????????" ??? ????????????. ?? ????????? ???? ?? ??????? ????? ?????. ?????????????? ??????? ??????? "??????? ?????????". ????????????? ?????? ???? ????????? "??????? ???? ????????", ???????????? RPM (?????????? ?????? ????????) ?? ??????????. 60 RPM ?? ?????? ????? [1] .

?????? ??????? ????????? T ?? ?????????? ???? ?? ????? ???? ????? ????????? ?????? ????. ????? ??????????? " f "?? ???????:

SI ???????? ?????? ???????? ??????? "?????"

???? [ ?????? ]

??????????? ??????? ????? ???????????; ?????? ??????? ? ??? ???? ?????? ??????????? ?????. ?????? ????? ???? ???????????.

????????? ?????? [ ?????? ]

??????????? ????? ?? ????? ????? ?????????????? ?????????????? ??????? ??????? ?????? ????? ????? ??????? ???????????. ????? ??????? ?????? ???????? ??????????? ???????????. ???????? 15 ???????? ??????? 71 ???????? ??????? ??????? ????? ???? ???????:

?????????? ????? ???? ????? ????, ??? ?? ????????? ???? ???? ??????? ??????? ????????? ?????????????? ???? ?????? ??????? ??????? ??????????? ??????? ???????????. [2]

?????? ???? ??????? [ ?????? ]

?????? ???????? ???????????, ????????????? ????? ?????????? ????????????. ????? ??????????? ???? ????????? ( λ ??????? ) ?? ?????????????? ????????. ???? ???? ( v ) ?? ??????????????? ???????? ??????????? f ????????.

?????????????? ???????? ???????? ???? ???? v = c , c ???? ???????? ?????????. ??????? ???????? ????????? ?????????????? ???????:

???????? [ ?????? ]

????? ????? ????? ????????? [ ?????? ]

?????? ?????????????? ??????? (???????? ??????? ?????????)

?????????????? ????????? "???????? ?????" ???? ????????? ??????????? ???????? ????????, ???????? ??????????. ???? ???? ??????? ???? ???? ????????? ???? ?????? ??????????????. ????? ???? ??????????? 4 × 10 14 Hz, ????? ???? ????? ??????????? 4 - 8 × 10 14 Hz ???? ????? ?????? ????????? ???????. ?????????????? ???????? 10 14 Hz ???? ???????? ????????? ??????? ?? ????? ???????????. ???????? ???????? ?????? ????????? ??????. ?????? ??????????? ?? ??????? ?????? ???????. ??? ?????? ??????????? ?? ??????? ?????? ???????. ??? ?????? ?? ?????????????? ????? 8 × 10 14 Hz ????????. ???? ???? ???? ?????????. ? ???????? ??????????? ??????? ??????. ???? ???? ?????? ??????????? ?? ??????? X-???????, ???? ???????.

?????????????? ?????? ???????? ??? ?????? ??????????? ?? ?????? ??????????? ??? ?????? ??????????? ?? ???? ?????? ???? ???????. ? ????????? ?? ????? ??????? ???????? ????? ?????? ??????? ????????. ?????????????? ???????? ???? ????????, ???? ?????????????? ?????????????? ????????. ???? ?????? ?????? ??????????? ?? ???????? ?????? ???? ????????? ???????..

????? [ ?????? ]

????? ??????? ??????? ????? ?????? ????? ????? ??????????????. ??????????? ?????? ????? ???? ?? ?????????? ???????? ??????. [3] . ?????? ???? ????????? ???? ?? ????????????? ??????? ???????. ????? ?????????????? ?????????? ???? ????????, ???????, ?????, ?????????? ??? ????? ??????. ????? ??????? ??????? ??????????????. ???????? ???????????. ??????? ?????? ???? 20 Hz ????? 20,000 Hz (20 kHz). ?????? ???? ?????? 60,000 Hz ??????????? ???? ???????. [4]

??? ???? ?????? [ ?????? ]

??????? [ ?????? ]

  1. Davies, A. (1997). Handbook of Condition Monitoring: Techniques and Methodology . New York: Springer. ISBN   978-0-412-61320-3 .
  2. Bakshi, K.A.; A.V. Bakshi, U.A. Bakshi (2008). Electronic Measurement Systems . US: Technical Publications. pp. 4?14. ISBN   978-81-8431-206-5 . [ permanent dead link ]
  3. Pilhofer, Michael (2007). Music Theory for Dummies . For Dummies. p. 97. ISBN   9780470167946 .
  4. Elert, Glenn; Timothy Condon (2003). "Frequency Range of Dog Hearing" . The Physics Factbook . Retrieved 2008-10-22 .