Electronics and Communication Engineering - Communication Systems - Discussion
Discussion Forum : Communication Systems - Section 1 (Q.No. 28)
28.
Direct and reflected sound waves may interfere with each other.
Answer: Option
Explanation:
PAS use moving coil microphones.
Discussion:
8 comments Page 1 of 1.
Shailesh said:
10 years ago
Condition for reflection of 2 signal is that they must be in phase, means both have same phase. But here in this case reflected signal is out of phase means by phase difference of 180 between them, so they can't interfere with each other.
Aamir said:
10 years ago
The reflected wave can interfere with the incident (original) wave, producing the constructive and destructive interference it can increase its amplitude or, with phase cancellation, decrease its amplitude.
Santosh said:
1 decade ago
What is meant by PAS and how the direct and reflected sound waves cannot interfere with each other can you explain me?
Tranveera said:
6 years ago
Right @Aamir.
If both the waves incident and reflected wave will meet in the same phase condition then it occurs.
If both the waves incident and reflected wave will meet in the same phase condition then it occurs.
Neena said:
1 decade ago
Please explain further as to why interference cannot occur?
Sujith k said:
1 decade ago
PAS means Public Addressing System.
(1)
Sai said:
1 decade ago
No they are 180 out of phase.
Swan said:
8 years ago
Please explain me the answer.
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