UNIT-1 19 Acoustics 04 Microphones and Loud speakers 10 Magnetic recording 05. UNIT-2 20 Video disc recording 06 Monochrome TV 10 Remote controls 04

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1 Department of Tehnial Eduation DIPLOMA COURSE IN ELECTRONICS AND COMMUNICATION ENGINEERING Fourth Semester Sujet: Audio and Video Systems Contat Hrs/Week:4 Contat Hrs/Sem: 64 GENERAL EDUCATIONAL OBJECTIVES:- 1. Understanding the onept of audio engineering 2. Understand the onept of reording and reprodution 3. Understand the working of mirophones and loudspeakers 4. Understand the working of Monohrome TV priniples 5. Understand the working of Color TV priniples and standards 6. To know the priniples of HDTV 7. To understand the operation of Remote ontrol and stereo multiplexing 8. To know aout Audio- Video formats. Contents No. of Hrs UNIT-1 19 Aoustis 04 Mirophones and Loud speakers 10 Magneti reording 05 UNIT-2 20 Video dis reording 06 Monohrome TV 10 Remote ontrols 04 UNIT-3 21 Color Television standards and systems 10 Stereo multiplexing 03 HDTV 08 Tests 04 Total 64

2 DETAILS OF CONTENTS 1. Aoustis Define of sound, noise, differentiate etween sound and noise, disuss audio and audile frequeny range, Explain refletion of sound, revereration, asorption, listening room, living room and dead room harateristis and the harateristis of Asorent materials. 2 Mirophones and Loud speakers Reording and reprodution hain, Mirophones and its harateristis, different types of mirophones, ideal loud speaker and its harateristis, different types of loud speakers, loud speaker impedane, resonane, low frequeny speakers, high frequeny speakers, Hi-Fi systems, multi speaker system, mention their advantages, importane of ross-over networks. 3. Magneti reording Erase head, reord head and playak head and iasing systems for oth erase and reord heads, harateristis of magneti tapes and different tape formats- 35mm, 16mm, 1/4, 1/8,non-syn and syn reording and eho, equalizers and filters. Noise redution using Doly. 4 Video dis reording and playak Optial reording mediums- tellurium selenium alloy organi ompound, magneto optial materials, video dis formats- laser vision, seleta vision, video high density, reording, playak, video dis mastering and repliation 5 Monohrome Television The elements of a TV system, sanning proess and sanning methods, aspet ratio, persistene of vision and fliker, vertial resolution, piture resolution, kell fator, horizontal resolution and video andwidth, interlaed sanning, video signal, ontrol pulses and omposite video signal, VSB transmission, monohrome TV transmitter and reeiver. 6 Color Television standards and systems Dispersion and reomination of light, primary and seondary olors and attriutes of olor, Luminane signal and hrominane signal, olor piture tue, olor TV ameras- plumion, Color TV systems, ompatiility and onsiderations, NTSC, PAL and SECAM, CCIR-B standards, lok diagram of Color TV transmitter and reeiver.

3 7 Remote Controls Ultrasoni transduers, frequeny signal enoding, PPM enoding and enoding y time-ration disrimination, remote ontrol transmitter iruit, ultrasoni transmitter iruit, troule shooting of remote ontrol systems. 8 Stereo multiplexing Ojetives, sum of differene of signals, stereo multiplexing. Modulation signal, demodulating the L-R signal. 9. High Definition TV Need for HDTV- draw aks of present analog TV, piture resolution onsiderations- piture resolution in the vertial resolution and in the horizontal diretion, features of HDTV proposals, Grand alliane and other HDTV standards, HDTV signal oding and ompression- major onsiderations, su-sampling tehnique, intra field splash inter frame DPCM, DCT oding, motion ompensated (MC) hyrid DCT oding method, HDTV signal reording tehnology- HDTV amera and CCDs, Digital video tape reorders, Digital dis reording, super high definition (SHD) still/ moving image reording, Comparative assessment of Optial film and HDTV as imaging medium for video post prodution system, different formats used in video transmission. SPECIFIC INSTRUCTIONAL OBJECTIVES:- 1. Aoustis 1.1 Definition of sound, noise, differene etween sound and noise 1.2 Disuss audio and audile frequeny range. 1.3 Explain refletion of sound, revereration, asorption 1.4 Explain listening room, living room and dead room harateristis 1.5. Explain the harateristis of Asorent materials. 2 Mirophones and Loud speakers 2.1 Explain Blok diagram of reording and reprodution hain 2.2 Mirophones- Explain the harateristis output level, output impedane, frequeny response, diretivity with simple prolems 2.3 Explain the different types of mirophones with priniple of operation and appliations- aron mirophone, rystal mirophone, moving oil mirophone, apaitive mirophone, eletret mirophone, gun mirophone, lavalier mirophone, tie lip mirophone and wireless mirophone.

4 2.4 Loud speakers- Mention the harateristis of ideal loud speaker. 2.5 Explain the different types of loud speakers-, dynami loud speaker, permanent magnet loud speaker, 2.7 Explain loud speaker impedane,. 2.8 Explain low frequeny speakers- Woofers, midrange and extended range speakers. 2.9 Explain high frequeny speakers- tweeters Explain the lok diagram of Hi-Fidility systems Explain multi speaker system, mention their advantages Explain the importane of ross-over networks. 3. Magneti reording 3.1 Explain erase head, reord head and playak head and Biasing systems for oth erase and reord heads 3.2 Explain the harateristis of magneti tapes and different tape formats- 35mm, 16mm, 1/4, 1/ Explain non-syn and syn reording Explain the funtion of equalizers and filters. list their types. 3.5 Noise redution systems using Doly. 4 Video dis reording. 4.1 Explain optial reording mediums- tellurium selenium alloy organi ompound, magneto optial materials 4.2 Explain video dis formats- laser vision, seleta vision, video high density their omparison. 4.3 Explain Reording, playak, dis mastering and repliation with lok diagrams. 5. Monohrome Television 5.1 Explain the elements of a TV system 5.2 Explain sanning proess and sanning methods 5.3 Explain aspet ratio, persistene of vision and fliker 5.4 Explain piture resolution,vertial resolution, horizontal resolution, kell fator and video andwidth. 5.5 Explain interlaed sanning. 5.6 Explain video signal, ontrol pulses and omposite video signal. 5.7 Explain VSB transmission. 5.8 Explain lok diagram of monohrome TV transmitter and reeiver. 6 Color Television standards and systems 6.1 Explain dispersion and reomination of light. 6.2 Explain primary and seondary olors and attriutes of olor. 6.3 Explain Luminane signal and hrominane signal. 6.4 Explain olor piture tue

5 6.5 Explain olor TV amera- Image orthion. 6.6 Explain Color TV systems, ompatiility and onsiderations 6.7 Explain NTSC, PAL and SECAM 6.8 Explain CCIR-B standards 6.9 Explain the lok diagram of Color TV transmitter and reeiver. 7 Remote Controls 7.1 Explain ultrasoni transduers, frequeny signal enoding, PPM enoding and enoding y time-ration disrimination 7.2 Explain remote ontrol transmitter iruit. 7.3 Explain ultrasoni transmitter iruit 7.4 Disuss troule shooting of remote ontrol systems. 8 Stereo multiplexing 8.1 Explain the ojetives. 8.2 Explain sum of differene of signals, stereo multiplexing. Modulation signal 8.3 Explain demodulating the L-R signal. 9. High Definition TV 9.1 Explain the need for HDTV- draw aks of present analog TV 9.2 Explain piture resolution onsiderations- piture resolution in the vertial resolution and in the horizontal diretion. 9.3 Explain the features of HDTV proposals. 9.4 Explain Grand alliane and other HDTV standards with reent trends. 9.5 Explain HDTV signal oding and ompression- major onsiderations, susampling tehnique, intra field splash inter frame DPCM, DCT oding, motion ompensated (MC) hyrid DCT oding method. 9.6 Explain HDTV signal reording tehnology- HDTV amera and CCDs, Digital video tape reorders, Digital dis reording, super high definition (SHD) still/ moving image reording. 9.7 Introdution to interative TV TEXT BOOKS: 1. Consumer Eletronis- S P Bali - Pearson-Prentie Hall 2. Digital ommuniations 2 nd revised Edition V K Khanna S Chand Pulishers REFERENCE BOOKS :- 1. Audio & Video Systems By- K Shashidhar, Sapna Puliations 2. Television Engineering R R Gulati- TMH 3. Color Television R R Gulati TMH 4. Television Engineering- Dhake- 5. Audio & Video systems Ajay Sharma- Dhanpath Roy & sons 6. Audio ylopedia- 7. Modern Reording Systems- 6 th Edition-David MilesHuer & Roert E Rumstien

6 Sujet: Department of Tehnial Eduation MODEL QUESTION PAPER Audio and Video Systems TIME :3 HRS MAX.MARKS :100 Note: 1)Setion A is ompulsory. 2) Answer any two main questions from eah of the remaining Setions SECTION: I 1 a Fill in the lanks with suitale words 5X1 (i) (ii) (iii) (iv) (v) 5 2 a SECTION: II 3 a 4 a

7 SECTION: III 5 a 6 a 7 a SECTION: IV 8 a 9 a 10 a

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