Qhov txawv ntawm Pitch thiab zaus

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Qhov txawv ntawm Pitch thiab zaus
Qhov txawv ntawm Pitch thiab zaus

Video: Qhov txawv ntawm Pitch thiab zaus

Video: Qhov txawv ntawm Pitch thiab zaus
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Pitch vs Zaus

Pitch thiab zaus yog ob lub ntsiab lus sib tham hauv physics thiab suab paj nruag. Zaus yog tus naj npawb ntawm qhov tshwm sim rov ua dua ib zaug ib lub sijhawm thaum lub suab yog ib lub tswv yim intuitive txuam nrog zaus ntawm lub suab nthwv dej. Cov ntsiab lus no tau siv dav hauv kev lag luam xws li acoustics, suab paj nruag, nthwv dej thiab vibrations thiab lwm yam. Hauv tsab xov xwm no, peb yuav tham txog dab tsi zaus thiab suab yog, lawv cov lus txhais, qhov zoo sib xws ntawm suab thiab zaus, kev siv suab thiab zaus, thiab thaum kawg qhov txawv ntawm suab thiab zaus.

Frequency

Frequency yog ib lub tswv yim sib tham hauv ntu ntu ntawm cov khoom. Yuav kom nkag siab txog lub tswv yim ntawm zaus, yuav tsum muaj kev nkag siab zoo ntawm cov lus tsa suab ib ntus.

Ib ntu ntu tuaj yeem suav tau tias yog ib qho lus tsa suab uas rov ua nws tus kheej hauv lub sijhawm teem tseg. Lub ntiaj teb revolving ib ncig ntawm lub hnub yog ib tug periodic motion. Lub satellite orbiting nyob ib ncig ntawm lub ntiaj teb yog ib tug periodic motion txawm lub suab ntawm ib tug tshuav pob teeb yog ib tug periodic motion. Feem ntau ntawm cov lus tsa suab peb ntsib yog ncig, linear lossis semi-circular. Lub sijhawm txav mus los muaj zaus.

Qhov zaus txhais tau tias "ntau npaum li cas" qhov xwm txheej yog. Rau qhov yooj yim, peb siv zaus raws li qhov tshwm sim ib ob. Cov lus tsa suab ib ntus tuaj yeem ua ib yam lossis tsis sib xws. Ib qho kev txav tsis sib xws tuaj yeem muaj qhov sib npaug ntawm qhov nrawm. Cov haujlwm xws li amplitude modulation tuaj yeem muaj ob lub sijhawm. Lawv yog cov haujlwm ua ntu zus nyob rau hauv lwm cov haujlwm raws sijhawm. Qhov kev hloov pauv ntawm qhov zaus ntawm lub sijhawm ua haujlwm muab lub sijhawm rau ib lub sijhawm. Tej yam yooj yim harmonic motions thiab damped harmonic motions kuj yog periodic motions. Yog li qhov zaus ntawm kev txav mus los kuj tuaj yeem tau siv lub sijhawm sib txawv ntawm ob qhov xwm txheej zoo sib xws. Qhov zaus ntawm lub pendulum yooj yim tsuas yog nyob ntawm qhov ntev ntawm lub pendulum thiab lub gravitational acceleration rau me me oscillations.

Frequency kuj tau tham hauv kev txheeb cais. Qhov ntau zaus yog tus naj npawb ntawm lub sij hawm ib qho kev tshwm sim rov ua dua lub sij hawm muab los yog dhau ib lub sij hawm.

PIB

Pitch yog lub tswvyim txuas ncaj qha nrog zaus. Siab dua lub suab ntawm lub suab siab dua qhov zaus uas nws oscillates.

Lub suab yog ib qho cuab yeej sib tham hauv suab nthwv dej nkaus xwb. Pitch tsis yog ib lub tswv yim zoo. Pitch tsis yog cov cuab yeej ntawm lub suab nthwv dej. Lub suab yog qhov hnov qab tsim los ntawm lub suab nthwv dej. Pitch tuaj yeem suav tau tsuas yog siv cov lus xws li "high pitched" lossis "low pitched". Tsis muaj txoj hauv kev los ntsuas qhov tseeb ntawm lub suab vim nws tsis yog qhov ntsuas tau zoo.

Qee lub suab nthwv dej muaj ntau tus lej ntawm cov suab vim lawv yog kev sib txuas ntawm cov suab.

Pitch vs Zaus

Frequency is a very well-defined quantity whereas pitch is not a well-defined quantity

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