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146
11.7 Mashqlar
Machine Translated by Google
Namuna olishdan oldin ushbu chastotalarni filtrlash yaxshi fikrdir; past o'tish joyi
11.7. Mashqlar
Buning uchun ishlatiladigan filtr antialiasing filtri deb ataladi.
Baraban yakkaxon misoliga qaytsak, namuna olishdan oldin past chastotali filtrni
qo'llang, so'ngra spektral nusxalarni olib tashlash uchun past o'tkazuvchan filtrni yana qo'llang.
147
namuna olish yo‘li bilan kiritiladi. Natija filtrlangan signal bilan bir xil bo'lishi kerak.
Machine Translated by Google
148
11-bob. Modulyatsiya va namuna olish
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Indeks
CosSignal, 5
o'zaro bog'liqlik, 95, 101 kub
to'lqin shakli, 117 yig'indisi, 25,
117 yig'indisi, 25, 113, 115 sikl,
2, 14
Dct, 71
DCT, 63
Konvolyutsiya teoremasi, 91, 97, 115, 126, 128
korrelyatsiya, 42, 46, 51, 60, 86
korrelyatsiya matritsasi, 52 kosinus, 5
Danielson-Lanzos lemma, 89 yosh
kompleks, 77
kompleks amplituda, 81
kompleks konjugat, 83
kompleks eksponensial, 76, 78, 129
kompleks son, 20 kompleks tekislik, 76
kompleks signal, 79 kompleks sinusoid, 78,
109 komponent, 7, 129 siqish, 73 hissa, viii
91, 94, 128, 133, 136
Braun shovqini, 39, 41, 54, 106, 116
Audio vidjet, 8
avtokorrelyatsiya, 51, 55, 101
avtokorrelyatsiya funksiyasi, 59
Boccherini, 3
dona vagon oynasi, 99
dona g'isht devor filtri, 143 dona
Anaconda, vi
analog-raqamli konvertor, 138 tahlil, 63,
64, 82 burchak, 20, 77 anti-aliasing filtri,
147 aplay, 7
Dekart koordinatasi, 20
xarakteristikasi, 120 ta sir, 23,
35 sxema, 120 dumaloq
konvolyutsiya, 95, 131 klon, vi
AM, 136
kuchaytirgich, 119
amplituda, 3, 11, 20, 77
amplitudali modulyatsiya, 136
BitCoin, 48, 62
Birlashtiruvchi,
vii bit chuqurligi, 138
abs, 77
akustik javob, 123 aliasing,
13, 19, 22, 88, 133, 146
tashuvchi to'lqin, 136
DFT, 3, 13, 63, 75, 84, 89, 130 diff,
116 differensial tenglama, 120
differentsial, 116
Bartlett usuli, 48 taraflama,
46, 112
DCT-IV, 69
demodulyatsiya, 136
lotin, 26, 110
tarmoqli to'xtatuvchi filtr, 7
Machine Translated by Google
magnituda, 20, 77
katta uchinchi, 4
matplotlib, vii matritsa,
65
Diskret Furye transformatsiyasi, 3, 75
dominant chastota, 4 nuqta mahsuloti,
60, 65
identifikatsiya matritsasi,
67, 83 xayoliy son, 77
impuls, 121, 125, 128, 133, 137 impulsli
javob, 121, 131 impuls poezdi, 140
kirish, 119 o‘rnatish, vii integral,
integratsiya 2110, integratsiya 2110,
integratsiya , 111, 114 interpolyatsiya,
144 interval, 26 teskari DCT, 71 teskari
DFT, 85
Gauss filtri, 98
Eyler, 76
Tez Furye o'zgarishi, 3, 20, 89
Gauss signali, 103
Erkin tovush, viii, 11, 48, 56
chastota, 2, 11, 24 chastota
komponenti, 7, 64, 67 chastota domeni,
97, 107, 136 chastota aniqligi, 29, 58
toÿliq DFT, 87 asosiy chastota, 4, 15
Geiger hisoblagichi, 49
Sauronning ko'zlari, 27
GitHub, vi
150
Hamming oynasi, 32, 104
garmonik, 4, 15 garmonik tuzilma,
13, 15, 17, 22 garmonik, 88
lag, 54, 55
oqish, 29, 92
chiziqli algebra, 66
chiziqli tizim, 119 log-
log shkalasi, 42, 116
logspace, 26 uzoq
masofaga bog'liqlik, 56 past
o'tkazuvchan filtr, 7, 44, 96, 99, 122, 137
Diskret kosinus transformatsiyasi, 63
Hertz, 2 ta
yuqori o'tkazuvchan filtr, 7, 105
Gabor chegarasi, 29,
58 gamma funktsiyasi, 76
xos funktsiya, 109, 130 xos
qiymat, 109, 130 teng
temperament, 4
Gauss shovqini, 39, 47
Facebook aktsiyalari narxi, 91, 101
Indeks
Eyler formulasi, 76
eksponensial jiringlash, 26
FFT, 3, 100
fft, 19 filtr,
44, 98, 107, 108, 111, 121 chekli
farq, 107 suzuvchi nuqta, 71 katlama
chastotasi, 19, 88 vilka, vi ramka, 5
glissando, 35
o'q otish, 123
Gauss oynasi, 103, 104
farqlash, 105, 107 uzilish, 30
LTI, 119
Xart, Vi, 62
Yupiter, vii, 8
Git, vi
Machine Translated by Google
Montgomery, Chris, 146
harakatlanuvchi o'rtacha, 91
Signal, 5, 9
signal, 1
signalni qayta ishlash, v
sinc funktsiyasi, 144
sinus, 5
Shannon, 145
smena, 9, 54, 93, 126, 131, 134
qisqa muddatli Furye transformatsiyasi,
28 yonbosh, 98
matritsa teskari, 67
matritsani ko'paytirish, 80
mexanik tizim, 120 asosiy
etishmayotgan, 62 modf, 14
modulyatsiya, 136
oktava, 4, 26
operator, 109
ortogonal matritsa, 67, 70, 83 tashqi
mahsulot, 65, 81 chiqish, 119
Puasson shovqini, 49
tasodifiy, 39, 46
tasodifiy yurish, 41
haqiqiy DFT, 87
haqiqiy FFT, 20 qizil
shovqin, 44 ombor,
vi o'lchamlari, 29
javob, 126
SciPy, vii, 73
segment, 7
seriyali korrelyatsiya, 54
Namuna olish teoremasi, 133, 145
arra tishlari shovqini, 34 arra tishlari
to‘lqin shakli, 21, 117, 127 shkala, 9, 126,
131, 134 ilmiy balandlik belgisi, 2
Python 3, vi
Pearson korrelyatsiyasi, 52
mukammal beshinchi, 4 davr,
2, 16 davriy, 30 davriy DFT,
86 davriy signal, 2, 56 faza, 25
fazali ofset, 5, 11, 20, 53, 74,
78 pushti shovqin, 40, 44, 49,
55, 102 balandlik, 2 balandlikni
baholash, 58 balandlikni idrok etish, 62
balandlikni kuzatish, 62
namuna, 5, 17, 127
namuna, 133, 137
Python 2, vi
Pandalar, 101, 106
parabola, 113
to'ldirish, 93, 102, 131
qutbli koordinata, 20
quvvat, 39, 42, 48 quvvat
seriyasi, 76 quvvat
spektri, 43 isbot, 128
Nyquist chastotasi, 19
Nyquist, 145
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