BE2M31DSP - Advanced DSP methods
Seminar schedule - summer semester 2022/2023
SEMINAR SCHEDULE:
- Tu - 21.2.2023 - Selected characteristics of discrete-time signals and systems, signal modelling
- Reminder of knowledge from BE2M31DSPA
- Modelling of signals using AR, MA, and ARMA models
Seminar guidelines
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Tu 28.2.2023 - Basis of LPC
- LPC analysis, autocorrelation method (Yule-Walker equations)
- LPC spectrum (smoothed estimation of PSD)
Seminar guidelines
- Tu - 7.3.2023 - Methods for delay estimation
- Delay estimation based on cross-correlation
- Delay estimation based on cross power spectral density (CPSD)
- Estimation dsicrete-system transfer function
Seminar guidelines
- Tu - 14.3.2023 - Applications of coherence analysis
- Definition of coherence function and estimation methods
- cohergram
- Time dependancy of average coherence
- Coherence applications (noise reduction and delay detection)
Seminar guidelines
- Tu - 21.3.2023 - Cepstral analysis - basic properties and applications
- Definition, properties, and basic applications of real and complex cepstrum
- Liftering and homomorphic deconvolution
Seminar guidelines
- Tu - 28.3.2023 - TEST 1 - Cepstral distance and its applications
- computation of DFT and LPC cepstrum, computation of cepstral distance
- measurement of signal distortion
- detection of frame boundaries in non-stationary signal
Seminar guidelines
- Tu - 4.4.2023 - Discrete cosine transform
- Definitions of DCT and computation approaches, relationship to DFT
- Using DCT for real cepstrum computation
- Compression using DCT
Seminar guidelines
- Tu - 11.4.2023 - Frequency-domain suppression of stationary additive noise
- suppression of stationary noise in a stationary signal
- Wiener filtering, DCT-based Wiener filtering, spectral subtraction
Seminar guidelines
- Tu - 18.4.2023 - Frequency-domain suppression of stationary additive noise in non-stationary signal
- adaptive variants of algorithms basedon Wiener filtering, DCT, and spectral subtraction,
Seminar guidelines
- Tu - 25.4.2023 - Inverse filtering and Wiener filtering with a distortion model
- compensation of distortion given by trasmitting channel using inverse fitering
- inverse filtering in noisy environment
- Wiener-filter-based suppression of noise influence during inverse filtering
Seminar guidelines
- Tu - 2.5.2023 - Pricipal Component analysis and KLT transform
- Eigenvalues and eigenvectors of signal covariance matrix
- Karhunen-Loeve transform (KLT)
- Comparison of KLT, DCT, and DFT
Seminar guidelines
- Tu - 9.5.2023 -
Seminar is cancelled (CHANGE OF SCHEDULING)
- Tu - 16.5.2023 - TEST 2 - ICA-based blid separation of signals
- Multichannel linear mixture of signals
- Mixing and inverse matrices
- Blind separation, FastICA
Seminar guidelines
- Tu - 23.5.2023 - Wavelet
transform (WT), filter banks (QMFB), Noise suppression based on WT
HOMEWORK
- Decomposition of signal into more bands using quadrature-mirror filters (QMF)
COMPLETION OF THE TASK AT SEMINAR
- Noise suppression using WT (QMFB)
Seminar guidelines