Examinando por Materia "Síntesis - sonido"
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- PublicaciónAcceso abiertoAnálisis de algoritmos de decodificación de sistemas ambisonics incluyendo corrección de campo cercano(2019) Ardila Arredondo, Alejandro; Villegas Echeverri, Daniela; Murillo Gómez, Diego MauricioAmbisonic is a three-dimensional reproduction system which has been widely used for more than four decades. Its wide use is due to the robust reconstruction of the sound field that allows the generation of immersive environments. This thesis presents the evaluation of different methodologies for 3 cases of decoding based on different types of propagation and sound sources. Where the near field is included The analysis of these models contemplate the amount of energy required by the system for the reconstruction of the sound field, errors with respect to the theoretical sound field as: amplitude error, normalized amplitude error and phase error. Finally, the analysis of the near-field filters in the time and frequency domain is performed. The numerical simulations show that it is indeed possible to compensate the effect of near field produced by the monopoles at the expense of a great energy generated by the system
- PublicaciónAcceso abiertoDesarrollo de un prototipo de convertidor de texto a voz por medio de síntesis concatenativa para realizar análisis comparativo entre los métodos MBR-PSOLA y FD-PSOLA(2017) Mususué Castro, Vanessa; Rodríguez Vásquez, Julián Andrés; Ruiz Sánchez, SantiagoIn this work, a prototype of text to speech converter is developed through the MATLAB programming language, which uses synthesis for concatenation. For this, four important stages are performed: first, the definition of the acoustic, which depends on the type of concatenated synthesis that is to be performed, second, the creation of the voice corpus for the Spanish language, third, the creation of the natural language processing module, which performs the analysis of all input text and finally the creation of the signal processing module, where the whole process of synthesis is carried out to obtain the final audio. In the signal processing step, a module of synthesis is added, which implement the FD-PSOLA and MBR-PSOLA methods, to improve the co-articulation step. Having already done the converter from text to speech we proceed to perform comparative tests, both subjective and objective, which will allow to evaluate the vocal quality of this synthesizer depending on the method used.