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| ELEN0002-2 | Introduction to audio and video techniques
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| Duration : | 30h Th, 20h Pr, 6h Labo. |
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| Number of credits : |
| Master in Electrical Engineering, research focus, 1st year | | 5 |
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| Master of science in computer science and engineering, research focus, 2nd year | | 5 |
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| Master in Computer science, Research Focus, 1st year | | 5 |
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| Master in Computer science, Research Focus, 2nd year | | 5 |
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| Master in in Electrical Engineering, professional focus in sustainable car technologies, 1st year | | 5 |
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| Master in Electrical Engineering, specialized approach, 1st year | | 5 |
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| Master in Computer Science, Professional Focus (Management), 1st year | | 5 |
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| Lecturer : | Jean-Jacques Embrechts |
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Language(s) of instruction :
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| English language |
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Organisation and examination :
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| Teaching in the first semester, review in January |
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Course contents :
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| Course description :
This course addresses the basic principles of the methods and techniques used in audio and video. It mainly emphasizes the signals and their properties, both in audio and video, both in the analog and digital domains. For audio signals, the devices used for recording and playback are particularly described. Finally, the techniques for audio and video compression are presented.
Contents :
- Fundamentals of acoustics and the audio signal,
- Microphones and loudspeakers,
- Principles of digital audio (introducing the compact disc and digital audio signal processing)
- The video signal (analog and digital)
- Audio and video compression (MPEG). |
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Learning outcomes of the course :
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| At the end of the course, it is intended that the student will be able to:
- identify the principal properties of analog audio signals in the time and frequency domains,
- determine, analyse and synthesize the frequency response of the condenser microphone as a function of its elements,
- determine, analyse and synthesize the frequency response of the eletrodynamic loudspeaker as a function of its elements,
- measure the principal properties of a loudspeaker in an anechoic room,
- understand the different steps to transform an analog audio signal into a digital signal and vice versa,
- determine the equations that model a simple audio digital system and analyse its behaviour (both through mathematics and listening). The example of an artificial reverberator will be particularly detailed,
- identify and measure the principal properties of analog video signals in the time and frequency domains,
- understand how to digitize a video signal,
- understand the principles of audio and video compression. |
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Prerequisites and co-requisites/ Recommended optional programme components :
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| This course is designed for undergraduate students in engineering. In particular, the following matters must have been learned:
- Systems control and analysis,
- Electrical circuits (an introduction to),
- Fundamentals of signal processing . |
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Planned learning activities and teaching methods :
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| First of all, this course is organised in modules, each of them consisting in a general presentation ex cathedra. Some modules are followed by applications and exercices with the teacher.
Two laboratory measurement sessions are planned, one for the audio signals (and loudspeakers) and the other for video signals. Small groups of students are created and their presence is mandatory. These laboratory sessions are only organised once per academic year.
Temporarily, the discussions during the laboratory sessions will be allowed in english or in french.
Finally, it is intended to dedicate one session to a "fresh topic" in audio and video that will be presented by an external expert (depending on the availability).
It is recommended that the students actively participate to the general presentation by answering questions and formulate critics. Also during the exercices, the students must be equipped with a calculator.
It is also recommended to read and understand the theory and exercices of the previous lesson before assisting to the next one. Additional exercices will also be proposed: it is strongly recommended that the students try to solve them by themselves and ask the teacher to evaluate their solution. |
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Mode of delivery (face-to-face ; distance-learning) :
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| Face-to-face learning, except during the laboratory sessions which are supervised by a member of the Intelsig research unit. |
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Recommended or required readings :
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| The necessary documents (five chapters and slides) will be available on-line for the students registered to this course: on the intranet (myUlg platform).
Some further (non mandatory) readings are also suggested at the end of each chapter. |
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Assessment methods and criteria :
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| A written examination is organised in january, on the theory, exercises and laboratory sessions.
No document can be consulted during this examination, unless otherwise stated (it is recommended to be equipped with an electronic calculator).
The two laboratory reports are part of the evaluation. The student who did not participate to the two laboratory sessions will receive a quotation of zero for this evaluation.
An oral examination is organised during the second session of examination (in august or september). The conditions of this examination are the same as in january, except that the laboratory reports are no longer considered for the evaluation.
During the examinations, the questions will be asked in english. The student is allowed to answer in english or in french. |
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Work placement(s) :
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Organizational remarks :
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| The course is organised during the autumn semester (monday morning).
Site: Montefiore Institute B28.
The main language for this course is english. |
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Contacts :
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| J.J. Embrechts |
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