Course detail

Audio Electronics

FEKT-BKC-AUDAcad. year: 2019/2020

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.

Learning outcomes of the course unit

The graduate is able to:
- explain principles of analog and digital low-frequency and audio signal transmission
- describe sources and sinks of low-frequency and audio signal
- design appropriate pre-amplifier, correction amplifier, power amplifier of audio filter
- explain principles of sampling, quantization and coding of the sound and audio signals
- explain principles of bit rate compression of the digital sound and audio signals
- characterize system for the record and playback without and with audio compression
- measure parameters of analog and digital audio system or amplifier


Students registering for the course should be able to explain the basic principles of analog and digital signal processing and function of the basic semiconductor units and amplifiers of the signal. Generally, the knowledge of the Bachelor's degree level is required.


Not applicable.

Recommended optional programme components

Not applicable.

Recommended or required reading

WIRSUM, S. Abeceda nf techniky. BEN - technická literatura, Praha, 2003. ISBN 978-8086056265. (CS)
ŠŤÁL, P. Výkonové audio zesilovače pracující ve třídě D. BEN - technická literatura, Praha, 2008. ISBN 978-8073002305. (CS)
POHLMAN, K. C. Principles of Digital Audio. McGraw-Hill, 2010. ISBN 978-0071663465. (EN)
TALBOT-SMITH, M. Audio Engineer's Reference Book, Second Edition. Focal press, 1999. ISBN 978-0240516851. (EN)

Planned learning activities and teaching methods

Teaching methods include lectures and practical laboratories. Course is taking advantage of e-learning (Moodle) system. Teaching methods depend on the type of course unit as specified in the article 7 of BUT Rules for Studies and Examinations.

Assesment methods and criteria linked to learning outcomes

During the semester, students can obtain up to 30 points for their active work in laboratory. The final exam is awarded by up to 70 points.

Language of instruction


Work placements

Not applicable.

Course curriculum

1. Introduction to the low-frequencies and audio electronics.
2. Low-frequency and audio signals, transmission and recording, audio processing.
3. Fundamentals of electroacoustics and transducers - microphones and speakers.
4. Low-frequency and audio amplifiers characteristics (class A, AB, B, D and T).
5. Audio preamplifiers, input selectors, loudness perception, volume control.
6. Bass/mid/treble control and audio filters, graphics and parametric equalizers.
7. Power amplifiers, digital class D amplifiers with Pulse Width Modulation control.
8. Digital audio and low-frequency signal processing.
9. ADC and DAC converters, DSP processors.
9. Digital audio recording without compression (PCM, CD-Audio, SACD, DVD-Audio).
10. Digital audio recording with compression (MiniDisc, MPEG, Dolby Digital, DTS).
11. Fundamentals of audio compression (MP3, ACC, WMA, OGG, ATRAC etc.).
12. Digital audio and multimedia broadcasting DAB/DMB.


Lectures are aimed at presenting the methods and technical means for processing, transmission and archive of the sound and audio signals in the area of digital low-frequency technique and audio electronics.

Specification of controlled education, way of implementation and compensation for absences

The content and forms of instruction in the evaluated course are specified by a regulation issued by the lecturer responsible for the course annually.

Classification of course in study plans

  • Programme BKC-EKT Bachelor's, 2. year of study, summer semester, 5 credits, compulsory-optional

Type of course unit



26 hours, optionally

Teacher / Lecturer

Laboratory exercise

26 hours, compulsory

Teacher / Lecturer