RRI405 Electroacoustics

Code RRI405
Name Electroacoustics
Status Compulsory/Courses of Limited Choice
Level and type Post-graduate Studies, Professional
Field of study Electronics and Telecommunications
Faculty
Academic staff Dmitrijs Pikuļins, Vitālijs Aišpurs, Ruslans Babajans
Credit points 2.0 (3.0 ECTS)
Parts 1
Annotation Electroacoustics is a physical phenomenon, is a part of modern civilization and cultural factors. Students are introduced to the acoustic field during the study course, subjective properties of sound in speech and music perception, sound signal distortion, room acoustics, and electromechanical transformation. Students are introduced to microphones, sound emission, speakers and acoustic structures. The acquisition of the study course is facilitated by laboratories and practical work for measuring and evaluating the acoustic properties of microphones, speakers, acoustic units and rooms..
Contents
Content Full- and part-time intramural studies Part time extramural studies
Contact hours Independent work Contact hours Independent work
Acoustic field. Subjective characterization of sound. Sound signal parameters. Room acoustics. Reverberation. 5 5 0 0
Acoustic isolation. Sound workshop. Theory of electromechanic conversation. Inversion of converters. 5 5 0 0
Dynamic electromechanical analogy. Electroacoustic analogy. Types and characteristics of microphones. 5 5 0 0
Design of microphones. Theory of sound radiation. Loudspeakers. Acoustic systems. 5 5 0 0
Laboratory work: measurement of damping factor, measurement of non-linear distortions. 5 5 0 0
Laboratory work: measurement of loudspeaker impedance, evaluation of acoustic system directional diagram. 5 5 0 0
Practice: absolute calibration of microphone, measurement of reverberation time. 5 5 0 0
Practice: analysis of loudspeaker amplitude-frequency curve, analysis of microphone directional characteristics. 5 5 0 0
Total: 40 40 0 0
Goals and objectives
of the course in terms
of competences and skills 		The goal of the study course is to provide students with knowledge in electroacoustic. The tasks of the study course are to provide in-depth knowledge of processes in radio and TV broadcasting systems, electromechanical converters, dynamic analogy methods for calculating microphones and speakers, thus creating a special physical view that allows solving mechanical, acoustic and other problems conveniently.
Learning outcomes
and assessment 		Orients in the theoretical knowledge of study course topics. - Tests during lectures and in the virtual space. Part of exam.
Knows the subjective properties of hearing and according to them is able to calculate and design microphones, speakers and their systems. - Ability to apply skills in practical work, in the analysis of laboratory work results. Part of the exam.
Is able to use an electroacoustic analogy for simulation and designing electromagnetic converters. - Ability to apply skills in practical work, in the analysis of laboratory work results. Part of the exam.
Is able to install and use audio systems indoors and outdoors - Ability to apply skills in practical work, in the analysis of laboratory work results. Part of the exam.
Evaluation criteria of study results
Tests and discussions - 40%
Laboratory works - 40%
Exam - 20%
 
Course prerequisites Knowledge in general physics, higher mathematics, linear electrical circuits.
Course planning
Part CP ECTS Hours Tests
Lectures Practical Lab. Test Exam Work
1 2.0 3.0 1.0 0.5 0.5 *
[Extended course information PDF]