Sumários
Recovery of Previous Labs
13 abril 2015, 14:00 • Bruno Guerreiro
In this Lab the students had the opportunity of repeating one of the past labs to improve their understanding of the addressed concepts and also their grade.
DFT e convolução
9 abril 2015, 11:00 • Jorge Salvador Marques
Convolução linear e circular. Exercícios. Quando coincidem? Cálculo da convolução linear com DFT. Filtragem de sinais longos com "Overlap-add".
DFT
31 março 2015, 09:30 • Jorge Salvador Marques
The DFT of complex exponentials. Special case: frequency multiple of 2pi/N. The DFT of sinusoids.
Lab. 3: Filtering
27 março 2015, 12:30 • Bruno Guerreiro
In this Lab project two types of filters (linear and non-linear) are used to attenuate or, if possible, to remove the noise corrupting an audio file. The noise corrupting the music is salt and pepper to simulate the traditional noise present in the old vinyl long play records.