E-Locus - Institutional Repository of the University of Crete

Home Search

Results - Details

Search command : Author="Παπαδάκη" And Author="Αικατερίνη"

Current Record: 4 of 13

[Add to Basket]

Identifier

000433804

Title

Modeling of speech signals using recurrent neural networks

Alternative Title

Μοντελοποίηση σημάτων φωνής με την χρήση αναδρομικών νευρωνικών

Author

Παπαδάκη, Αικατερίνη Ι

Thesis advisor

Κομίνης, Ιωάννης
Πανταζής, Γιάννης

Reviewer

Μακρής, Κωνσταντίνος

Abstract

Speech is the primary means of communication between humans. A speech signal waveform corresponds to the variation of air pressure over time. Over two hundred years ago there have been early efforts to produce synthetic speech, using mechanical apparatus. Recently, ongoing activities have been focused on the artificial production of human speech, or else speech synthesis. Particularly, there have been developed vocoders, analyzers and synthesizers of human voice signals, based on mathematical models. Furthermore, neural vocoders, vocoders based on artificial neural networks, have introduced a new area in speech synthesis. Goal of this study is to build a neural vocoder which combines deep learning with prior knowledge of the inherent sinusoidal nature of speech, in contrast with the majority of available neural based vocoders which discard signal processing in favor of neural networks. Particularly, the origin of the present study is modeling complex multi-component AM and FM sinusoidal waves with the property to represent speech signals, employing Recurrent Neural Networks (RNNs). The target is to develop a light neural vocoder, faster than WaveRNN, which achieves state-of-the-art performance. In the context of this thesis, we implement a variant of the WaveRNN model and we present the generated state-of-the-art results. Furthermore, we examine the proposed model’s performance using synthetic as well as real speech signals.

Language

English

Subject

Neural vocoder

Recurrent neural networks

Sinusoidal signals

Αναδρομικά νευρωνικά δύκτια

Ημιτονοειδή σήματα

Νευρονικός Φωνοκωδικοποιητής

Νευρωνικά δύκτια

Σήματα φωνής

Issue date