V.V.Krizhanovskii A model investigation of spectral-correlation characteristics of the breath noise in human respiratory tract |
Acoustic bulletin, Vol. 1 ¹ 4, (1998) |
| The spectral-correlation characteristics of the breath noise in human respiratory tract are studied using the methods of statistical modeling. The estimations of breath noise spectral-correlation characteristics important for the computer diagnosing of the lung diseases have been obtained on the basis of the acoustic model of respiratory tract offered in this paper. The importance of joint correlation processing of the data recorded on the neck and chest is pointed out. It is shown that processing results essentially depend on correlation degree of the breath sound sources, their sizes and location. The signs characterizing the correlation degree and location of the noise sources have been specified. The obtained estimates of the spectral-correlation characteristics have been compared with the experimental data. The results of such comparison show good agreement between the model and experimental estimates under the assumption that the breath noise sources are uncorrelated. |
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KEY WORDS: breath noise, spectral-correlation characteristics |
| TEXT LANGUAGE: Russian |