7/21/2019 Avs

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School of Engineering and Technology

B.Tech.- Electronics & Communication Engineering

Subject: Audio Video Systems

Time: !rs

Q.1 Attempt any eight question. All question carry equal Marks. 8

i. Compare the characteristics of cone type and horn type loudspeaker.ii. Write the Audio and Speech frequency ranges.iii. Eplain the sensiti!ity and threshold of hearing.i!. What is Sound"!. Write the principle of car#on granule microphone.!i. What is the need of sound recording systems"!ii. Which material is used to make the audio tape"!iii. What do you understand #y directi!ity of a microphone"i. What is the $lutter e%ect". What is the Stylus"i. &ra' the (lock diagram for )rans!erse recording head.ii. Write the relation for head gap* tape+speed and tape 'idth.

Q., -a Eplain the 'orking of Electret microphone 'ith the help of suita#lediagram. /  -# 0o' the loudspeaker con!ert audio signal into sound signal"

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2-a Eplain the 2i##on microphone in detail. /-# Eplain the &irect radiating type 3oudspeaker.

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Q./ -a Eplain the Stereophonic &isc recoding system in detail./

  -# Eplain the longitudinal magnetic recording head 'ith the help ofdiagram. /

2-a &escri#e Maimum 4sa#le $requency -M4$ in magnetic recording system.

/-# Eplain the e%ect of tape speed in magnetic tape recording.

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