Tow audio signals, each covering the range 0 to 15 kHz, are to be combined and transmitted via FM as shown in figure below, for this system: - If the amplitude of the signal at point (3) is increased by a factor of three, find the bandwidth and modulation index at point (4). MI(1) M2(1) 15kHz 15kHz 2 coswit fl-40KHZ X (1) (2) FM Modulator Carrier 90 MHz B-5 O/P BW=1.74 MHz, Modulation index=13 BW=1.76 MHz, Modulation index=15 BW=1.75 MHz, Modulation index=14 BW=1.78 MHz, Modulation index=17 BW=1.77 MHz, Modulation index=16

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Tow audio signals, each covering the range 0 to 15 kHz, are to be combined and
transmitted via FM as shown in figure below, for this system: -
If the amplitude of the signal at point (3) is increased by a factor of three, find the
bandwidth and modulation index at point (4).
MI(1)
M2(f)
15kHz
15kHz
2 coswit
fl-40KHZ
X
(1)
(3)
(2)
FM
Modulator
Carrier 90 MHz
B-5
O/P
BW=1.74 MHz, Modulation index=13 O
BW=1.76 MHz, Modulation index=15
BW=1.75 MHz, Modulation index=14
BW=1.78 MHz, Modulation index=17
BW=1.77 MHz, Modulation index=16
Transcribed Image Text:Tow audio signals, each covering the range 0 to 15 kHz, are to be combined and transmitted via FM as shown in figure below, for this system: - If the amplitude of the signal at point (3) is increased by a factor of three, find the bandwidth and modulation index at point (4). MI(1) M2(f) 15kHz 15kHz 2 coswit fl-40KHZ X (1) (3) (2) FM Modulator Carrier 90 MHz B-5 O/P BW=1.74 MHz, Modulation index=13 O BW=1.76 MHz, Modulation index=15 BW=1.75 MHz, Modulation index=14 BW=1.78 MHz, Modulation index=17 BW=1.77 MHz, Modulation index=16
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