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Analysis of the Cough Sound: an Overview

https://doi.org/10.1006/pulp.1996.0034Get rights and content

Abstract

Coughing is presented by a sudden air expulsion from the airways which is characterized by a typical sound. This sound is so characteristic that it allows identification of the cough and its distinction from other vocal manifestations. The cough sound is a very important symptom of well over 100 diseases and other conditions of medical significance. Changes in its character may have a considerable value in identifying the mechanisms of airway pathology present in respiratory diseases. The cough sound gives information about the pathophysiological mechanisms of coughing by indicating the structural nature of the tissue during therapy that leads to certain patterns of cough. Similarly the character of the cough sound gives information about the behaviour of the glottis and whether the glottis behaves differently in different pathological conditions. Analysis of the cough sound record has significant value in prognosis because its changes may indicate the effectiveness of therapy or the progress of disease. Despite recent progress in cough sound research the attention paid to this interesting physiological and clinical problem is still not sufficient to solve completely various open questions, including our correct knowledge of the mechanism of creation of cough sounds.

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  • Analysis of COVID-19 Resulting Cough Using Formants and Automatic Speech Recognition System

    2023, Journal of Voice
    Citation Excerpt :

    The coughing sound gives information about the pathophysiological mechanisms of coughing by several parameters as well as the structural nature of the tissue, The pitch of the vibration is determined mainly by the degree of the stretch of vocal cords, by their approximation one to another and by the mass of their edges. In the literature studies,33,34 thier obtained value's value of the pitch (F0) defined by different authors ranges from 300 to 700 Hz in normal condition whereas in cough sounds of bronchitis the bands between 500-1200 Hz are the most expressive. Based on our findings, we can say that for the healthy people we are in agreement with those of33 but for infected ones, we have observed a difference between COVID-19 infected people's values and other diseases like bronchitis the bands, perhaps that the behavior of glottis behaves differently in COVID-19 similar to other pathological conditions.

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