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2022 | OriginalPaper | Chapter

Cough Sound Identification: An Approach Based on Ensemble Learning

Authors : Christian Salamea-Palacios, Javier Guaña-Moya, Tarquino Sanchez, Xavier Calderón, David Naranjo

Published in: Marketing and Smart Technologies

Publisher: Springer Nature Singapore

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Abstract

Cough identification using DSP techniques in an audio signal is a complex task; thus, an artificial intelligence approach is proposed by applying machine learning, deep learning, and HMMs algorithms. Later, an ensemble learning model has been used to differentiate cough from other environmental sounds, putting those algorithms together and choosing the best result as the performance of the system. The final system consists of a preprocessing stage where the audio signals are adjusted through data augmentation, normalization, removal of silent fragments, and the transformation to Mel spectrograms, while, on back-end stage, three models have been evaluated: a convolutional neural network, a random forest, and a classifier based on hidden Markov models. We assembled a hard voting classifier (VC) model from the three models to obtain a more robust and reliable model. The VC model reached the highest precision and F1-score values without false-negative and up to 75% of true-positive values.

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Title: Cough Sound Identification: An Approach Based on Ensemble Learning
Authors: Christian Salamea-Palacios
Javier Guaña-Moya
Tarquino Sanchez
Xavier Calderón
David Naranjo
Publisher: Springer Nature Singapore
Book: Marketing and Smart Technologies
Print ISBN: 978-981-16-9267-3

Electronic ISBN: 978-981-16-9268-0

Copyright Year: 2022
DOI: https://doi.org/10.1007/978-981-16-9268-0_22

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