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Vytautas Deksnys, Algimantas Čitavičius
Kaunas University of Technology
Dept. of Electronics Engineering
COURSE LECTURES CONTENT
1. HUMAN HEARING AND PERCEPTION
• Human ear structure
• Limits of hearing
• Masking
 Time Masking
 Frequency Masking
• The ear as spectrum analyzer
COURSE LECTURES CONTENT
2. SPEECH PRODUCTION SYSTEM
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The Human Voice
Vowels and Consonants
The Engineering Model
3. LINEAR PREDICTIVE ANALYSIS
• Basic principles of linear predictive analysis
• Optimal prediction coefficients
• The autocorrelation method
 The Durbin‘s recursive procedure
 The minimal prediction error and effectiveness of prediction
• The covariance method
• The choice of parameters for linear predictive analysis
COURSE LECTURES CONTENT
4. PULSE CODE MODULATION
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Sampling: Nyquist- Shennon sampling theorem
Ideal sampling
Aliasing and anti-aliasing
Flat-top sampling
Quantizing; Uniform quantizing
Encoding
Bandwidth of PCM signals
Linear PCM advantages and disadvantages
COURSE LECTURES CONTENT
5. SPEECH COMPRESSION
• Necessity and possibility of compression
• Nonuniform quantizing: µ-law and A-law companding
• Adaptive quantization
 Maximum SNR coding
 Adaptation principle
 Types of adaptation
 Feed-forward adaptation
 Feed-backward adaptation
• Differential quantization
COURSE LECTURES CONTENT
6. SUB-BAND CODING PRINCIPLE
7. MPEG AUDIO LAYERS
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Audio Layer 1
Audio Layer 2
Audio Layer 3
MPEG-2 Audio
Advanced Audio Coding
8. VECTOR QUANTIZATION
COURSE LECTURES CONTENT
9. SCRAMBLING
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Scramblers and PN sequence generators
Frame synchronization
10.PHASORS, MODULATIONS, CONSTELATIONS
• The phasor representation of a signal
 Geometric Interpretation
• Modulation
• Multilevel modulation and constellation diagrams
COURSE LECTURES CONTENT
11.CONVOLUTIONAL CODES
• Code parameters and the structure of the
convolutional encoder
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Encoder states
Punctured codes
Coding of an incoming sequence
The encoder design
State Diagram
Tree Diagram
Trellis Diagram
COURSE LECTURES CONTENT
• Decoding
The basic idea behind decoding
Sequential decoding
Maximum Likelihood and Viterbi decoding
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Kaunas University of
Technology
Prof. Vytautas Deksnys
URL: http://www.msl.ktu.lt
E-mail: Vytautas.Deksnys@ktu.lt
Phone: +370698 48828
TS over IP (bidirectional)
Ethernet 100M/1G (UDP & RTP)
Control from PC
Conv. DTM3200
DVB-ASI
HDMI
DVB-T/T2/C/
C2
STB
DTA-115 Multi-Standard VHF/UHF (47 .. 862MHz ±1ppm)
TV receiver
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* Analyze all parts of DVB-ASI (MPEG2 TS) stream contents;
* Investigate TS modulation according to the ETS 300 429
(QAM - Quadrature amplitude modulation) and ETS 300 744
(COFDM - Coded Orthogonal Frequency Division
Multiplexing);
* Investigate TS parts processing possibilities:
- PID (Packet Identifier remapping);
- EPG multiplexing;
- PCR (Program Clock Reference) restamping;
- service filtering;
- NIT (network information table) generation;
- PMT (program map table) monitoring;
- PAT (Program Association Table) analysis;
* Incomming transport stream bit rate measurement;
* Analyze DVB-T/C set-top-box schematic (on
STMicroelectronics SoC ST7105 basis) and FW architecture;
* Analysis of HDMI interface (standard, signals, transfer
rates, etc.).
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* Investigation of phase noise influence on BER;
* Investigation of channel noise and pulse disturbances
influence on BER .
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