Trabalho de Conclusão de Curso de Graduação
Otimização do sistema de processamento de áudio da plataforma eFono
Fecha
2022-02-18Autor
Lersch, Luiz Felipe Lehmen
Institución
Resumen
The phonological disorder is defined as a speech sound disorder characterized
by the inadequate production of sounds and inadequate use of the
phonological rules of the language. In this context, the eFono application appears,
designed to assist speech-language therapists in the speech evaluation
process. To this end, audios of patients pronouncing keywords are recorded by
the professional, with the help of the application. Using eFono, problems were
noticed in sound processing, such as slowness and unwanted sounds. This work
proposes to improve the eFono audio acquisition process, optimizing the processing
and classification of the pronunciation of words spoken by children. An
approach that allows audio clipping in the eFono Android application was developed.
In addition, a research was carried out regarding the sampling rate
of the frequency of recorded audios, carrying out tests with different samples
seeking to find the sampling rate without loss of quality, with the smallest size.
The results achieved through the development of the clipping activity provide a
reduction in the sizes of sound files, thus reducing the time of sending the audios
to the server and their storage. Furthermore, the development of the frequency
quality test flow facilitates the execution of future tests, which will be able to
benefit from a larger sample base.