BPC-ELA FEKT BPC-ELA Acad. year 2022/2023 Winter semester 6 credits
Acoustic environment, sound propagation, basic quantities and relations, energy transmitted by sound. Physiological acoustics, sound masking and its utilization in compression algorithms, directional and spatial hearing. Noise and its measurement. Room acoustics. Electromechanical and electro-acoustic analogy. Types and operation principles of electro-acoustic transducers. Microphones, practical design and measurement of characteristics. Loudspeakers, acoustic impedance and distortion, mechanical design, horn-loaded loudspeakers, headphones. Loudspeaker systems, types of loudspeaker enclosures, design and construction of loudspeaker systems and crossovers. Multichannel audio systems, basics of sound reinforcement.
Language of instruction
- 26 hrs lectures
- 4 hrs exercises
- 22 hrs laboratories
- 13 hrs projects
Schimmel Jiří, doc. Ing., Ph.D. (UTKO)
Skvaril Šimon, Ing. (UTKO)
Subject specific learning outcomes and competences
On completion of the course, students are able to:
- enumerate the basic acoustic quantities and their units,
- explain the physiology of hearing, including binaural auditory perception,
- employ sound level meters and use them for noise and electro-acoustic measurements,
- describe room acoustic properties, demonstrate the measurement of room impulse response and reverberation time, enumerate materials and structures used for modifying the room acoustics
- categorize electro-acoustic transducers and state their principles, properties and use,
- categorize microphones, state their properties and designs, and demonstrate the measurement of their characteristics,
- describe the properties of designs used for unloaded and loaded loudspeakers, measure and calculate their parameters,
- design loudspeaker systems and measure their characteristics,
- enumerate the types of surround sound systems and describe their principle.
The aim of the course is to make students familiar with the chain of processing acoustic signals from their origination through their transformation into electric signals and back to acoustic signals up to the listener's final perception.
Prerequisite knowledge and skills
The knowledge of basic physical laws is required as well as the knowledge of laws and quantities in electrical circuits, characteristics of electric circuit elements, circuit behaviour with inertia elements, periodical and non-periodical signal spectra, random variables and basic terms from the area of statistics. Students who enrol on the course should be able to use instruments for the measurement of electrical voltage, current, and resonant frequency, waveform generators, and oscilloscopes.
- Colloms, M., High Performance Loudspeakers, 6th ed. John Wiley & Sons, Ltd, 2005. ISBN 978-0-470094-30-3
- Zwicker, E., Fastl, H. Psychoacoustics, Facts and Models, 2nd ed. Springer-Verlag, 1999. ISBN 3-540-65063-6
- Streicher, R., Everest, F., A. The New Stereo Soundbook, 3rd ed. Audio Engineering Associates, 2006. ISBN 978-0-9665162-1-0
Syllabus of lectures
Acoustic environment, basic quantities and relations, wave equation of sound propagation, energy transmitted by sound, sound spectrum, acoustic impedance.
Physiological acoustics, 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.
Measurement of acoustic power and sound intensity.
Room acoustics, acoustic wave trajectory, room impulse response, acoustic materials.
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 enclosures and crossovers.
Surround sound systems principles and formats.
Stereo and multichannel techniques of sound pickup.
Syllabus of numerical exercises
Getting familiar with the laboratory and the safety regulations, getting familiar with operating laboratory equipment.
Sound signal spectrum
Measurement of ear's own characteristics
Measurement of binaural hearing characteristics
Room acoustics measurement
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
Evaluation of study results follow the BUT Rules for Studies and Examinations and Dean's Regulation complementing the BUT Rules for Studies and Examinations. Up to 22 points are awarded for the tests in theoretical knowledge in the exercises. Up to 18 points can be obtained for correct results and elaboration of all laboratory exercises. Credit is awarded for completing all laboratory tasks and numeric exercises in the minimal scope. The minimal scope of the elaboration of a particular laboratory exercise are specified by a regulation issued by the guarantor of the course and updated for every academic year. Up to 40 points are given for the final written examination, and it is necessary to get at least 25 points for its successful completion. Up to 20 points are given for the final oral examination and it is necessary to get at least 25 points for its successful completion.
In the case of distance learning, tests in practice are performed remotely in e-learning and laboratory excercises are replaced by homework evaluated with the same number of points. The exam will take place in person, in justified cases remotely.
Teaching methods and criteria
Teaching methods depend on the type of course unit as specified in article 7 of the BUT Rules for Studies and Examinations.
- Lectures provide explanations of the basic principles, subject methodology, examples of problems and their solutions.
- Laboratory exercises support practical mastering of the themes presented in lectures. Active participation of students is required.
Participation in lectures is recommended. Participation in other ways of instruction is checked.
Course is taking advantage of e-learning (Moodle) system.
It is obligatory to undergo all laboratory exercises in regular or alternative terms to complete the course. Other forms of checked instruction are specified by a regulation issued by the guarantor of the course and updated for every academic year.
|Mon||exam||2023-01-23||T12/SE 5.127||13:00||14:00||závěrečná zkouška - písemná část|
|Mon||exam||2023-01-23||T12/SC 5.50||14:00||15:30||závěrečná zkouška - ústní část|
|Mon||exam||2023-01-23||T12/SC 5.50||15:30||17:00||závěrečná zkouška - ústní část|
|Wed||lecture||lectures||T12/SD 2.93||11:00||12:50||48||2BIA 2BIB 3BIT||xx||Schimmel|
|Wed||exam||2023-01-04||T12/SE 5.127||12:00||13:00||závěrečná zkouška - písemná část|
|Wed||exam||2023-01-04||T12/SC 5.50||13:00||14:30||závěrečná zkouška - ústní část|
|Wed||exam||2023-01-04||T12/SC 5.50||14:30||16:00||závěrečná zkouška - ústní část|
|Thu||exam||2023-01-12||T12/SE 5.127||13:00||14:00||závěrečná zkouška - písemná část|
|Thu||exam||2023-01-19||T12/SE 5.127||13:00||14:00||závěrečná zkouška - písemná část|
|Thu||exam||2023-01-19||T12/SC 5.50||14:00||15:30||závěrečná zkouška - ústní část|
|Thu||exam||2023-01-12||T12/SC 5.50||15:00||16:30||závěrečná zkouška - ústní část|
|Thu||exam||2023-01-19||T12/SC 5.50||15:30||17:00||závěrečná zkouška - ústní část|
|Thu||exam||2023-01-12||T12/SC 5.50||16:30||18:00||závěrečná zkouška - ústní část|
|Fri||exercise||lectures||T12/SC 5.50||09:00||10:50||16||2BIA 2BIB 3BIT||xx||Říha pouze 1. a 2. týden semestru|
|Fri||laboratory||lectures||T12/SC 5.50||09:00||10:50||16||2BIA 2BIB 3BIT||xx||Říha od 3. týdne semestru|
|Fri||exercise||lectures||T12/SC 5.50||12:00||13:50||16||2BIA 2BIB 3BIT||xx||Říha pouze 1. a 2. týden semestru|
|Fri||laboratory||lectures||T12/SC 5.50||12:00||13:50||16||2BIA 2BIB 3BIT||xx||Schimmel od 3. týdne semestru|
|Fri||exercise||lectures||T12/SC 5.50||14:00||15:50||16||2BIA 2BIB 3BIT||xx||Říha pouze 1. a 2. týden semestru|
|Fri||laboratory||lectures||T12/SC 5.50||14:00||15:50||16||2BIA 2BIB 3BIT||xx||Skvaril od 3. týdne semestru|
Course inclusion in study plans