Course detail
Electroacoustics
FEKT-BELAAcad. year: 2012/2013
Acoustic environment, sound propagation, basic quantities and relations, energy transmitted by sound. Sound spectrum. Physiological acoustics, sound masking and its utilization in compression algorithms, directional and spatial hearing. Noise and its measurement. Room acoustics, room impulse response, acoustic materials and structures. Electromechanical and electroacoustic analogy, types and operation principles of electroacoustic transducers. Microphones, practical design and measurement of characteristics. Loudspeakers, acoustic impedance and distortion, mechanical design, horn-loaded loudspeakers. Loudspeaker systems, types of loudspeaker enclosures, design and construction of loudspeaker systems and crossovers. Surround sound systems, principles and formats. Stereo and multichannel techniques of sound pickup.
Language of instruction
Number of ECTS credits
Mode of study
Guarantor
Department
Learning outcomes of the course unit
- name basic acoustic quantities and their units,
- explain physiology of hearing including binaural auditory perception,
- employ sound level meters and use them for noise and electroacoustic measurements,
- describe room acoustic properties, demonstrate measurement of room impulse response and reverberation time, name materials and structures used for room acoustic treatment,
- categorize electroacoustic transducers and state their principles, properties and their use,
- categorize microphones, state their properties and designs, and demonstrate measurement of their characteristics,
- describe properties of designs used for unloaded and loaded loudspeakers, measure and calculate their parameters,
- design loudspeaker systems and measure their characteristics,
- name types of surround sound systems and describe their principle,
- name methods of multichannel sound pickup and explain their principles.
Prerequisites
The student who enrols the subject should be able to use instruments for measurement of electrical voltage, current, and resonant frequency, waveform generators and oscilloscopes.
Co-requisites
Planned learning activities and teaching methods
- Lectures provide the explanation of basic principles, subject methodology, examples of problems and their solutions.
- Laboratory exercises support practical acquiring of themes presented at lectures. Active participation of students is needed.
Participation at lectures is recommended. Participation at other ways of instruction is checked.
Assesment methods and criteria linked to learning outcomes
Course curriculum
2. Physiological acoustics, sound masking and its utilization in audio compression algorithms.
3. Directional and spatial hearing, 3D room simulation using headphones and loudspeakers.
4. Noise and its measurement, basic measuring instruments for electroacoustic measurement and their application.
5. Basics of room acoustics, acoustic wave trajectory, room impulse response, acoustic materials and structures.
6. Electromechanical and electroacoustic analogy.
7. Types and operation principles of electroacoustic transducers.
8. Microphones, practical design and measurement of characteristics.
9. Loudspeakers, acoustic impedance and distortion, mechanical design, horn-loaded loudspeakers.
10. Loudspeaker systems, types of loudspeaker enclosures, design and construction of loudspeaker enclosures and crossovers.
11. Headphones, practical design and measurement of characteristics.
12. Surround sound systems principles and formats.
13. Stereo and multichannel techniques of sound pickup.
Work placements
Aims
Specification of controlled education, way of implementation and compensation for absences
Recommended optional programme components
Prerequisites and corequisites
Basic literature
Škvor, Z., Akustika a elektroakusitka. Academia, Praha, 2001. ISBN 80-200-0461-0 (CS)
Recommended reading
Eargle, J. The Microphone Book. 2004. ISBN 0-240-51961-2 (CS)
Sýkora, B. Stavíme reproduktorové soustavy, 1. – 48. díl. A Radio 10/97 - 9/2001 (CS)
Toman, K. Reproduktory a reprosoustavy, 1. díl. Dexon, 2003. (CS)
Classification of course in study plans
- Programme ZRZT-J Bachelor's
branch J-ZRT , 2 year of study, summer semester, compulsory
- Programme EECC Bc. Bachelor's
branch B-TLI , 2 year of study, summer semester, elective specialised
branch B-EST , 2 year of study, summer semester, elective interdisciplinary - Programme EEKR-CZV lifelong learning
branch EE-FLE , 1 year of study, summer semester, elective specialised
Type of course unit
Lecture
Teacher / Lecturer
Syllabus
Energy transmitted by sound, sound spectrum, Doppler principle, acoustic impedance.
Physiological acoustics, subjective and objective characteristics of sound, sound masking and its utilization in audio compression algorithms.
Directional and spatial hearing, 3D room simulation using headphones and loudspeakers.
Noise and its measurement, basic measuring instruments for electroacoustic measurement and their application.
Room acoustics, acoustic wave trajectory, room impulse response, acoustic materials.
Electromechanical and electroacoustic analogy.
Types and operation principles of electroacoustic transducers.
Classical and combined types of microphones, practical design and measurement of characteristics.
Loudspeakers and headphones, acoustic impedance and distortion, mechanical design, horn-loaded loudspeakers.
Loudspeaker systems, types of loudspeaker enclosures, design and construction of loudspeaker enclosures and crossovers, acoustic lenses.
Surround sound systems principles and formats.
Stereo and multichannel techniques of sound pickup.
Laboratory exercise
Teacher / Lecturer
Syllabus
Sound signal spectrum
Measurement of ear's own characteristics
Measurement of binaural hearing characteristics
Noise measurement
Room acoustics measurement
Test
Calibration of the electrostatic microphone by pistonphone
Measuring the impedance characteristic of loudspeakers
Measuring the frequency response of microphones
Design and simulation of loudspeaker system
Measuring the frequency and directional response of loudspeaker system
Test