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Audio signal denoising using deep learning
 Pacal, Tomáš ; Záviška, Pavel (referee) ; Mokrý, Ondřej (advisor)
This thesis deals with noise removal in audio signal using deep learning. The basic types of neural networks and their use in audio signal processing are described. The possibilities of implementing neural networks are tested in Matlab and Python. Subsequently, a~convolutional neural network model is proposed, according to which four different convolutional network architectures are implemented and then trained and tested on different types of noise. Based on these tests, one architecture was selected and subjected to a comparative test on a speech recording and then on a music recording, together with a noise reduction method using wavelet transform. The results are evaluated using both objective sound quality metrics and an informal listening test. The neural network achieved better results according to all the metrics used as well as in the listening test.
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