Tipo di tesi
Tesi di laurea magistrale
Titolo
Artificial Intelligence applied to keyword spotting for low-power and memory constrained embedded device
Dipartimento
INGEGNERIA DELL'INFORMAZIONE
Corso di studi
EMBEDDED COMPUTING SYSTEMS
Riassunto (Italiano)
Given a domotic installation based on the Internet of things paradigm, we would like to provide a Voice Wake up to enable hands-free interaction for a user with impaired mobility for increasing quality of life.
We focused on developing a keyword spotting system for constrained devices to enable a low-power voice interaction.
In order to meet the requirements we propose an architecture based on Deep Neural Network. We explore different options based on Convolutional Neural Network, and we propose a new architecture which gives an increase of over 5\% accuracy over standard Convolution architecture, with just a tenth of the total memory footprint if we compare it with previous research on Convolutional Neural Networks for embedded device. We also explore data-augmentations and pseudo-labeling as a way of increasing the robustness of the network without increasing size. Finally we test our implementation over a Raspberry Pi 3,obtaining a reduction of power consumption of over 50\% with respect to previous works, but with the same accuracy.
