Why do we use FM for sound and AM for video in TV
transmisssion?
- 5 Answers
- 28169 Views
- DRDO, I also Faced
- E-Mail Answers
Answers were Sorted based on User's Feedback
Answer / guest
In case of FM,we have to vary the frequency according to
the modulating frequency and amplitude remains costant
thats why to eliminate the losses due to the amplitude is
very small that is required for clear sound.
In second case the amplitude of the incoming signal varies
and the frequency remains constant that is required for
sharp and clear picture.
| Is This Answer Correct ? | 39 Yes | 13 No |
Answer / falak
FM provides a better scheme as compared to AM as far as performance is concerned (especially in non-linear channels).
the video signal needs very high bandwidth to cover minute details which would turn to be impracticable to be commercialized. therefore AM is used for video part.
the bandwidth needed for sound signals is much much lesser than its video part so FM is affordable for sound signals.
therefore FM is used for sound signals.
| Is This Answer Correct ? | 13 Yes | 8 No |
Answer / reddy
basically eye is not sensitive to detect some noises in
video. but ears can detect highly sensitive to noise in
sound......
so FM has constant amplitude which is less senstive to
distortion is used in sound transmission. and AM is used in
video transmission
| Is This Answer Correct ? | 7 Yes | 6 No |
Answer / vinit92
fm is used in sound because every person have a different
voice quality and different voice frequency .and in fm
frequency change with respect to the information .every
person have a different voice frequency so we are using fm
in sound so we can get natural frequency effect in sound
........
but in video we are using am because in video
color,contrasts can be easily adjusted in am and video are
making on frame so frame can be easily adjusted on am so we
are using am in video ...
| Is This Answer Correct ? | 3 Yes | 5 No |
Answer / ashish
in FM the amplitude ramains constant.it is a property of the
noise disturbance that it affects the amplitude of the
signal.so at the recieving end if we found the amplitude
variation in FM wave then it will be due to the noise hence
it can be eliminated by using the appropriate filter without
the loss of information.hence FM is used for sound signals.
| Is This Answer Correct ? | 6 Yes | 17 No |
I am a Electronics Communications Engineer.Please send us the important interview questions and answers.
What ODU work?
what is lumped and distributed elements?
plz tll me wch area i will prepare 4 IOCL EXAM............
diffence between electricle and electronics?
i need PCB design interview question??? if anybody have means please give it us
What is difference between a multiplexer and encoder? Also what is the between demultiplexer and decoder?
What are all the connectors used in the GSM Architecture like Abis is used between BTS and BSC, I need it in detail.
basic call setup
What are the building blocks of a digital circuit?
how AC voltage is generate?
what is bts ,what is e1 what is fifa card ,what is rri ,what is e1t1
-
Civil Engineering (5085) - Mechanical Engineering (4452)
- Electrical Engineering (16638)
- Electronics Communications (3918)
- Chemical Engineering (1095)
- Aeronautical Engineering (239)
- Bio Engineering (96)
- Metallurgy (361)
- Industrial Engineering (259)
- Instrumentation (3014)
- Automobile Engineering (332)
- Mechatronics Engineering (97)
- Marine Engineering (124)
- Power Plant Engineering (172)
- Textile Engineering (575)
- Production Engineering (25)
- Satellite Systems Engineering (106)
- Engineering AllOther (1379)
