An audio signal consists of two distinct sounds : one a human speech signal in the frequency band of 200 Hz to 2700 Hz, while the other is a high frequency music signal in the frequency band of 10200 Hz to 15200 Hz. The ratio of the AM signal bandwidth required to send both the signals together to the AM signal bandwidth required to send just the human speech is :
← JEE Main 2016 · 9 Apr · Shift 1
PhysicsSingle correct+4 / -1Question 24 of 90
JEE Main 2016 · 9 Apr · Shift 1, Physics question 24
Answer and worked solution
Official answer: C
Taking each band's spread: speech spans 2700 − 200 = 2500 Hz, and both signals together span 15200 − 200 = 15000 Hz. AM doubles each, so the ratio is .
Topics:Modulation