Disclosed herein is a method and apparatus for monitoring, identifying anddetermining the breathing cycle of anindividual from processed acoustic signal waveform data. The breathing soundsof an individual are recorded using a microphoneand digitized such that the breathing sounds may be plotted. The data issegmented and transformed to form a plurality of segmentsrepresentative of a frequency spectrum. The frequency spectrum data istransformed so as to produce magnitude bins andthe sum of lower magnitude bins and the sum of higher magnitude bins aredetermined in a sampling of segments. A Bands Ratiois determined from the sum of lower magnitude bins and the sum of highermagnitude bins in the sampling of segments. A firstbands ratio is then determined within a given segment and compared to the meanbands ratio. If the first bands ratio of the givensegment is greater than the mean bands ratio by at least a predeterminedmultiplier, the given segment is labeled as inspiration. Ifthe first bands ratio of the given segment is less than the mean bands ratioby at least a predetermined multiplier, the given segmentis labeled as expiration.
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