An audio signal consists of two distinct soun | vedclass

Name: Exam Paper Generator | JEE NEET Paper Generator | Vedclass
Brand: Vedclass
Rating: 5 (35 reviews)

Question

(C) The bandwidth of an $AM$ signal is defined as the difference between the maximum and minimum frequencies in the signal.For the human speech signal

Vedclass · Accepted Answer

$6$

Vedclass · Answer

(C) The bandwidth of an $AM$ signal is defined as the difference between the maximum and minimum frequencies in the signal.For the human speech signal,the frequency range is $200\,Hz$ to $2700\,Hz.$ The bandwidth is $BW_1 = 2700\,Hz - 200\,Hz = 2500\,Hz.$When both signals are sent together,the total frequency range spans from the lowest frequency of the speech signal $(200\,Hz)$ to the highest frequency of the music signal $(15200\,Hz.)$ The total bandwidth is $BW_{total} = 15200\,Hz - 200\,Hz = 15000\,Hz.$The ratio of the total bandwidth to the speech signal bandwidth is $\frac{BW_{total}}{BW_1} = \frac{15000\,Hz}{2500\,Hz} = 6.$

Similar Questions

If multiple waves with modulation indices $n_1, n_2, n_3, ...$ modulate a carrier wave,what is the total modulation index of the resulting wave?

The maximum amplitude of an $AM$ wave is $90 \ V$ and the minimum amplitude is $10 \ V$. What is the modulation index of the $AM$ wave in percentage?

When the receiving antenna is on the ground,the range of a transmitting antenna of height $980 \ m$ is (Radius of the earth $= 6400 \ km$) (in $km$)

An antenna is a device:

Vedclass Test Series

Exam Paper Generator

Online Exam Module