Detail předmětu
Electroacoustics
FEKT-BPA-ELAAk. rok: 2022/2023
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, room impulse response. Electromechanical and electro-acoustic analogy, acoustic materials and structures. 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. Stereo and multichannel techniques of sound pickup.
Jazyk výuky
Počet kreditů
Garant předmětu
Zajišťuje ústav
Výsledky učení předmětu
- 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.
Prerekvizity
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.
Plánované vzdělávací činnosti a výukové metody
- 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.
Course is taking advantage of e-learning (Moodle) system.
Způsob a kritéria hodnocení
Osnovy výuky
2. Physiological acoustics, subjective and objective properties of sound, 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, noise classes, loudness measurement according to Steven's and Zwicker's models.
5. Sound level meters, analyzers for electroacoustic measurements, calibration of measurement chain. Measurement of acoustic power and sound intensity.
6. Basics of room acoustics, geometric, wave and statistic models, room impulse response, measurement of reverberation time, objective parameters of listening rooms.
7. Electromechanical and electro-acoustic analogy, acoustic materials and structures.
8. Electro-acoustic transducer as the system, types and operation principles of transducers.
9. Gradient microphones, wave and combined microphones, design and measurement of characteristics.
10. Loudspeakers, acoustic impedance and distortion, mechanical design, horn-loaded loudspeakers. Types and design of headphones, measurement of characteristics.
11. Loudspeaker systems, types of loudspeaker enclosures, design and construction of loudspeaker enclosures and crossovers. Acoustic lenses.
12. Multichannel sound reproduction, basics of sound reinforcement.
13. Stereo and multichannel techniques of sound pickup.
Učební cíle
Vymezení kontrolované výuky a způsob jejího provádění a formy nahrazování zameškané výuky
Základní literatura
SCHIMMEL, J. Electroacoustics - Laboratory Practices. Brno, VUT v Brně. 2015. p. 1 - 59. SCHIMMEL, J. Electroacoustics. Electroacoustics. Brno, VUT v Brně. 2015. p. 1 - 120. ISBN 978-80-214-5030-1.
SCHIMMEL, J. Electroacoustics. Brno, Brno university of Technology. 2015. p. 1 - 120. ISBN978-80-214-5030-1.
Streicher, R., Everest, F., A. The New Stereo Soundbook, 3rd ed. Audio Engineering Associates, 2006. ISBN 978-0-9665162-1-0 (EN)
Zařazení předmětu ve studijních plánech
Typ (způsob) výuky
Přednáška
Vyučující / Lektor
Osnova
2. Physiological acoustics, subjective and objective properties of sound, 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, noise classes, loudness measurement according to Steven's and Zwicker's models.
5. Sound level meters, analyzers for electroacoustic measurements, calibration of measurement chain. Measurement of acoustic power and sound intensity.
6. Basics of room acoustics, geometric, wave and statistic models, room impulse response, measurement of reverberation time, objective parameters of listening rooms.
7. Electromechanical and electro-acoustic analogy, acoustic materials and structures.
8. Electro-acoustic transducer as the system, types and operation principles of transducers.
9. Gradient microphones, wave and combined microphones, design and measurement of characteristics.
10. Loudspeakers, acoustic impedance and distortion, mechanical design, horn-loaded loudspeakers. Types and design of headphones, measurement of characteristics.
11. Loudspeaker systems, types of loudspeaker enclosures, design and construction of loudspeaker enclosures and crossovers. Acoustic lenses.
12. Multichannel sound reproduction, basics of sound reinforcement.
13. Stereo and multichannel techniques of sound pickup.