Method for respiratory sound analysis.
A system is described for the analysis of respiratory sounds by means of a dual-channel sound envelope detector and a real-time spectrum analyzer. A three-dimensional spectral analyzer display for frequency, amplitude, and time has been utilized. Respiratory sounds have been observed with intensities up to 0.5 N/m2 and with normal frequencies in the range of 0 to 1.5 kHz. This system can extract useful information from the sounds of respiration, information which is not available by conventional auscultation.
D001314:Auscultation / Q000379:methods*; D006801:Humans; D012119:Respiration; D013057:Spectrum Analysis / Q000295:instrumentation