XE31CZS exercise - Estimation of Spectral Characteristics
Tasks to do:
- Observe time-frequency resolution of DFT in spectrogram of
stationary and non-stationary signals (fcn specgram or
specgram in newer MATLAB versions).
- Realize estimation of Power Spectral Density - PSD (smoothed
long-time spectrum) :
- using direct Welch method (fcn psd or
- by averaging of periodogram components.
- Analyzed signals:
- Sinusoidals with different frequencies.
- Gaussian white noise (use approx 10000 samples length).
- Speech signal s0001.bin.
- One word from s0001.bin.