678 IndexGibb’s effect, 46, 593
Gibb’s phenomenon, 46, 326, 381
Gilbert, William, 101
Goertzel algorithm, 499
Gravity, 105
Growing exponentials, 131–132
Growth time exponentials, 127H
Half wave symmetry, 329
Hamming(N) function, 47
Hamming window, 47–50, 397, 594, 653
Hanning window, 47–50
Harmonic distortion, 321, 326
Harmonic frequencies, 17, 323, 326, 381–386,
388–394
Heaviside, Oliver, 320
Heaviside function, 29–30
Henries, as unit measure, 108
Hermitian orthonormal signal family, 17–18
Hermitian polynomials, 18
Hertz, Heinrich Rudolph, 102
Hertz, as unit measure, 4, 16, 44, 102, 226, 586
High-pass fi lter (HPF)
features of, 565–566, 590
prototypes, 571–572
Higher-order fi lters, 569
h(n), 497–498, 547
Hydraulic energy, 107I
ifourier(F) function, 344
ilaplace(F) function, 364
Image processing techniques, 56
Impedance
construction of, 248
equivalent, 240
implications of, 224, 233, 235, 240
in complex networks, 372–373, 375
parallel, 254
polyphase generator system, 265
scaling transformation, 567
series RLC circuit, 245
Thevenin’s, 252–253, 259
three-phase generator system, 266
Impedance Z, 354, 598–599
impinvar function, 588
Impulse
family, 7
function, see Impulse functioninvariant method, 584, 587
invariance response transforms, 586
response, see Impulse response, 461
impulse function, 367
Impulse function
characteristics of, 5, 7, 10, 30, 68
discrete, 70–71
Impulse response
digital fi lter, 586
discrete systems, 463–464
fi lter transfer function, 593
impact of, 336–337, 489, 583–584
symmetric, 589–590
Independent variable, continuous time signal,
23–25
Inductive reactive power, 232–233, 245
Inductor
effects of, 569
equivalent, 114–115
features of, 104, 108, 130, 136
functions of, 103, 128
ideal, 115
impedance, 235
LP normalized fi lter, 568
parallel RLC, 247
pure, 116
storing energy elements, 127
Infi nite impulse response (IIR) fi lters
bilinear, 588
Butterworth, 596, 649–650
characteristics of, 596
Chebyshev, 596
digital, 563, 569, 583, 585, 646–649
discrete, examples of, 658–660
Elliptic, 596
ideal frequency, 593
time domain, 589
Infi nite length sequence, 43
Information processing signals, 21–22
Initial value theorem, 321, 349
In phase, 233
Input
discrete systems, 459, 543–544
power, 107
signal, 40
sinusoidal, 563–564
Instantaneous power, 231
Instrumentation
ammeter, 106
voltmeter, 106, 227
Insulators, 105 –106, 109
Integrals
convolution, 335–336
differential, 321CRC_47760_Index.indd 678CRC_47760_Index.indd 678 7/18/2008 3:10:50 PM7/18/2008 3:10:50 PM