Waveform and spectral analysis of crackles.
نویسندگان
چکیده
منابع مشابه
Waveform and spectral analysis of crackles.
Crackles were recorded from six patients, four with tuberculosis and two with chronic bronchitis. It was observed by waveform and spectral analysis that most of the frequency components of a crackle were limited within a range of 0.1 to 1 kHz. Characteristically, waveforms of crackles were separable into two segments, initial "starting segments" and subsequent "decay segments." It is suggested ...
متن کاملSpectral and waveform characteristics of fine and coarse crackles.
Two acoustically different types of lung crackles, fine and coarse, occur in different pathophysiological conditions. To differentiate these crackles from objective characteristics of frequency information, crackles were recorded from 16 patients with pulmonary fibrosis judged clinically to have "fine" crackles and from 10 with chronic bronchitis who had mainly "coarse" crackles. Time expanded ...
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ژورنال
عنوان ژورنال: Thorax
سال: 1980
ISSN: 0040-6376
DOI: 10.1136/thx.35.11.843