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FEKT-BPC-AUDAcad. year: 2024/2025
Students become familiar with fundamentals of analog and digital low-frequency and audio signal, then with functionality and design of the pre-amplifiers, correction amplifiers, power amplifiers and filters. The course continues by explanation of sampling, quantization and coding in the area of audio with principles of the audio compression. Emphasis is put on explanation of principles of source coding, error corrections and methods for suppression of the signal degradation with record and playback. Students acquire knowledge of the methods for record and playback in the systems without and with reduction of the bit rate of the audio.
Language of instruction
Number of ECTS credits
Mode of study
Guarantor
Department
Entry knowledge
Rules for evaluation and completion of the course
Aims
Study aids
Web BUT, course BPC-AUD: https://www.vut.cz/studenti/predmety/detail/268602
Prerequisites and corequisites
Basic literature
Recommended literature
Classification of course in study plans
specialization AUDB-TECH , 3 year of study, summer semester, compulsoryspecialization AUDB-ZVUK , 3 year of study, summer semester, compulsory
Lecture
Teacher / Lecturer
Syllabus
1. Low-frequency signals, transmission and recording, processing and reproduction of audio.2. Principles of electroacoustics and electroacoustic transducers - microphones and loudspeakers.3. Classes and properties of amplifiers for low-frequency electronics (A, AB, B, D, T).4. Preamplifiers for audio, input switching, physiological volume control.5. Correction amplifiers and multi-band filters, depth and height correction, equalizers.6. Final and power amplifiers, digital amplifiers with PWM modulation and ZV.7. Digital processing of low-frequency signals, A/D with D/A converters, DSP.8. Digital recording without data flow reduction (PCM, CD-Audio, SACD, DVD-Audio).9. Digital recording with data flow reduction (MiniDisc, MPEG, Dolby Digital, DTS).10. The principle of audio signal compression (MP3, ACC, WMA, OGG, ATRAC and others).11. Standards for DAB/DMB digital radio broadcasting.
Laboratory exercise
1. Input audio amplifier with adjustable sensitivity and RIAA correction.2. Depth and height correction amplifier with physiological correction.3. Digital power amplifier in class T with PWM.4. Stereophonic active crossover for satellites and subwoofer with adjustable frequency.5. The principle of a digital power amplifier in class D and PWM modulation.6. Digital multi-band equalizer and limiter for audio signal controlled by PC.7. A/D and D/A conversion of a low-frequency signal with optional conversion parameters.8. Measuring the D/A converter of a CD player with an Audio Precision audio analyzer.