Nyob rau hauv lej, Fourier inversion theorem hais tias rau ntau hom haujlwm nws muaj peev xwm rov qab tau txoj haujlwm los ntawm nws qhov Fourier hloov pauv. Intuitively nws yuav raug saib raws li nqe lus hais tias yog peb paub tag nrho cov zaus thiab theem cov ntaub ntawv hais txog nthwv dej ces peb yuav reconstruct tus thawj nthwv dej precisely.
Koj txhais li cas los ntawm kev hloov pauv Fourier?
inverse Fourier transformnoun. Kev ua lej ua lej uas hloov pauv txoj haujlwm rau qhov sib cais lossis txuas ntxiv mus rau hauv kev ua haujlwm rau qhov amplitude nrog rau qhov muab spectrum; kev hloov pauv hloov pauv ntawm Fourier transform.
Vim li cas peb thiaj siv Fourier hloov pauv?
Lub Fourier hloov pauv yog siv los hloov cov cim los ntawm lub sijhawm sau mus rau zaus sau npe thiab qhov hloov pauv Fourier yog siv hloov lub teeb liab rov qab los ntawm zaus sau mus rau lub sijhawm sau. … Qhov no ua tiav los ntawm kev hloov pauv ceev Fourier IFFT.
Dab tsi yog qhov hloov pauv Fourier ntawm 1?
F{δ(t)}=1, yog li qhov no txhais tau tias qhov hloov pauv plaub ntawm 1 yog dirac delta muaj nuj nqi yog li kuv sim ua pov thawj los ntawm kev daws qhov sib xyaw tab sis kuv tau txais ib yam dab tsi uas tsis converge.
Ob hom Fourier yog dab tsi?
Kev piav qhia: Ob hom Fourier series yog- Trigonometric thiab exponential.
