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Question: Answered & Verified by Expert
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 band width required to send both the signals together to the AM signal band width required to send just the human speech is:
PhysicsCommunication SystemJEE MainJEE Main 2016 (09 Apr Online)
Options:
  • A 3
  • B 5
  • C 6
  • D 2
Solution:
2084 Upvotes Verified Answer
The correct answer is: 3
Band width for Music signal =1520010200 =5000 Hz

Band width for speech signal =2700200=2500Hz

Band with for Both = 2500+5000=7500 Hz

Band with for Human speech =2500 Hz

Required Ratio =75002500=31

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