Time-Frequency Transform – DWT-IDWT Wavedec-Waverec

31 março 2015, 12:30 • Agostinho Cláudio da Rosa

Time-Frequency Transform – DWT-IDWT Wavedec-Waverec

A variable time/frequency resolution or multi-resolution proposal was also introduced leading to the wavelet transform (WT) with exploration of different decomposition tree and wavelets families

This lab aims at application of time-frequency tools, namely dwt, idwt, upcoef wavedec. waverec, appcoef, detcoef, wrcoef, edfread, etc.

Detection and Estimation

31 março 2015, 09:30 • Agostinho Cláudio da Rosa

31 Mar - Detection and Estimation

b. LRT - Receiver operating characteristic (ROC). 

Detection and Estimation

26 março 2015, 12:00 • Agostinho Cláudio da Rosa

Detection and Estimation – 7 st

Denoising. Ddencmp and wdencmp. Application of DWT.

Discrete Wavelet Transform (1)

24 março 2015, 14:00 • Agostinho Cláudio da Rosa

Discrete Wavelet Transform (1)

The time-frequency transform brought new advances in spectral analysis, namely by providing the time information lost in traditional Fourier Transform or its fast discrete version (FFT). The limitations of the tradeoff imposed by STFT can be reduced by a variable time/frequency resolution or multi-resolution proposal provided by the wavelet transform (WT).

Discrete Wavelet Transform (1)

24 março 2015, 12:30 • Agostinho Cláudio da Rosa

Discrete Wavelet Transform (1)

The time-frequency transform brought new advances in spectral analysis, namely by providing the time information lost in traditional Fourier Transform or its fast discrete version (FFT). The limitations of the tradeoff imposed by STFT can be reduced by a variable time/frequency resolution or multi-resolution proposal provided by the wavelet transform (WT).