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FEKT-BPA-ELAAcad. year: 2025/2026
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.
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Classification of course in study plans
specialization BPA-ECT , 0 year of study, winter semester, elective
Lecture
Teacher / Lecturer
Syllabus
1. Acoustic environment, basic quantities and relations, wave equation of sound propagation, energy transmitted by sound, sound spectrum. Types of acoustic fields.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.
Laboratory exercise
Getting familiar with the laboratory and the safety regulations, getting familiar with operating laboratory equipment.Sound signal spectrumMeasurement of ear's own characteristicsNoise measurement and its evaluationRoom acoustics measurementMeasurement of binaural hearing characteristicsTest and compensatory practiceMeasuring the frequency response of microphonesMeasuring the impedance characteristic of loudspeakersDesign and simulation of loudspeaker systemMeasuring the frequency and directional response of loudspeaker systemMeasurement of acoustic intensity and power radiated by objectTest and compensatory practice