Figure P4.2-10 4.2-10 A slightly modified version of the scrambler in Fig. P4.2-10 was first used commercially on the 25-mile radio-telephone circuit connecting Los Angeles and Santa Catalina island, for scrambling audio signals. The output y(r) is the scrambled version of the input m(t). M(S) m(t) 15 kHz 15 kHz f kHz 2 cos 30000л Lowpass filter 0-15 kHz y(t) (Scrambled output) (a) Find and sketch the spectrum of the scrambled signal y(t). (b) Design a block diagram for descrambling y(t) to obtain m(t).
Figure P4.2-10 4.2-10 A slightly modified version of the scrambler in Fig. P4.2-10 was first used commercially on the 25-mile radio-telephone circuit connecting Los Angeles and Santa Catalina island, for scrambling audio signals. The output y(r) is the scrambled version of the input m(t). M(S) m(t) 15 kHz 15 kHz f kHz 2 cos 30000л Lowpass filter 0-15 kHz y(t) (Scrambled output) (a) Find and sketch the spectrum of the scrambled signal y(t). (b) Design a block diagram for descrambling y(t) to obtain m(t).
Electricity for Refrigeration, Heating, and Air Conditioning (MindTap Course List)
10th Edition
ISBN:9781337399128
Author:Russell E. Smith
Publisher:Russell E. Smith
Chapter9: Components For Electric Motors
Section: Chapter Questions
Problem 14RQ
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