§ 14-4Line spectrum
A plot showing each of harmonic amplitudes in the
wave is called the line spectrum.
]s i nco s[21)(
1
0 tnbtnaatf
n
nn ???
?
?
???
?
?
?
???
1
0 )co s (
n
nn tnCC ??
Example,(14-1)
)1(21 2200 ???? nbaCa n daC nnn
)1(./10521 2200 ?????? nnbaCa n daC nnn ?
?tttttf ???????? 4s i n4103s i n3102s i n210s i n105)( ?????
10 4
)(tf
n
32
?10
5
?210 ?310
?410
line spectrum