Digital Audio Technique
Good understanding of principles of analog to digital conversion of audio signals, in particular sampling, quantization, dithering, sample frequency conversion, oversampling, noise shaping, A/D converter techniques. Deep understanding of audio data coding, particularly, channel coding, error protection and correction. Theoretical knowledge of transformational, perceptual and lossless coding. Good understanding of audio data storage on magnetic and optical media, as well as real time streaming. Practical skills to analyze and simulate audio processing devices (converters, coders) using Matlab/Simulink programming language.
- apply the optimal conversion of analog to digital signals in relation dynamics
- analyze gain in dynamic in relation to the stages of oversampling
- apply the optimal implementation of coding to reduce the rate of data
- analyze existing decoding systems in relation to the required quality
- appraise the overall possible quality of the transmission path
- apply the optimal application in relation to the cost-benefit requirement
- design an appropriate system for the transmission and digital signal processing
- evaluate the optimal system for recording and archiving of digital signal
Forms of Teaching
Concentrated lecture, with all the options and present. Practical examples. Communication with students during and after school hours.Exams
Mid-term exams after half of the teaching material. Final exam: written and oral.Laboratory Work
Hardware and software exercises follow the curriculumConsultations
Lecturer is available to students in office hours for oral consultations, and by email any time.Seminars
Student should select a topic from relevant to the course. The theme is mostly an introduction to the area of student interest.
|Type||Threshold||Percent of Grade||Threshold||Percent of Grade|
|Laboratory Exercises||0 %||20 %||0 %||20 %|
|Mid Term Exam: Written||0 %||20 %||0 %|
|Final Exam: Written||20 %||40 %|
|Final Exam: Oral||20 %|
|Exam: Written||20 %||60 %|
|Exam: Oral||20 %|
Week by Week Schedule
- Sampling theorem. Audio signal quantization. Dither. Aliasing.
- Digital signal recording. PCM. A/D transducers in the audio frequency range.
- Digital signal reproduction. D/A converters in the audio frequency range. Jitter
- Sigma-delta conversion and noise shaping
- Media for storing digital recordings. Optical. Magnetic. Solid-state
- Low bit rate coding. Theory
- Low bit rate coding. Codec design
- Middle term exam
- Digital signal processing. Discrete signals. Digital filters
- Speech coding for transmission
- Digital devices interconnection. SPDIF. AES. HDMI, MIDI
- Telecommunications and internet audio
- Digital radio an television
- Computer as a system for recording, generating, processing and measurement of sound signals.
- Final exam.