Memorias de investigación
Ponencias en congresos:
Analysis of Complexity and Modulation Spectra parameterizations to characterize Voice Roughness
Año:2014
Áreas de investigación
  • Ciencias de la computación y tecnología informática
Datos
Descripción
Disordered voices are frequently assessed by speech pathologists using acoustic perceptual evaluations. This might lead to problems due to the subjective nature of the process and due to the in uence of external factors which compromise the quality of the assessment. In order to increase the reliability of the evaluations the design of new indicator parameters obtained from voice signal processing is desirable. With that in mind, this paper presents an automatic evaluation system which emulates perceptual assessments of the roughness level in human voice. Two parameterization methods are used: complexity, which has already been used successfully in previous works, and modulation spectra. For the latter, a new group of parameters has been proposed as Low Modulation Ratio (LMR), Contrast (MSW) and Homogeneity (MSH). The tested methodology also employs PCA and LDA to reduce the dimensionality of the feature space, and GMM classi?ers for evaluating the ability of the proposed features on distinguishing the di erent roughness levels. An e?ciency of 82% and a Cohen's Kappa Index of 0:73 is obtained using the modulation spectra parameters, while the complexity parameters performed 73% and 0:58 respectively. The obtained results indicate the usefulness of the proposed modulation spectra features for the automatic evaluation of voice roughness which can derive in new parameters to be useful for clinicians.
Internacional
No
Nombre congreso
VIII Jornadas en Tecnologías del Habla and IV Iberian SLTech Workshop - IBERSPEECH 2014
Tipo de participación
970
Lugar del congreso
Revisores
Si
ISBN o ISSN
978-84-617-2862-6
DOI
Fecha inicio congreso
19/11/2014
Fecha fin congreso
21/11/2104
Desde la página
71
Hasta la página
80
Título de las actas
Conference Prodeedings IberSpeech 2014
Esta actividad pertenece a memorias de investigación
Participantes
Grupos de investigación, Departamentos, Centros e Institutos de I+D+i relacionados
  • Creador: Departamento: Teoría de la Señal y Comunicaciones (Provisional)