Patent ID: 9232910
Filing Date: 2016-01-12
CPC Classification: A61B

Claim Text:
1. A computer-implemented method for monitoring a breathing cycle of an individual for classification of breathing phases during abnormal types of breathing, the breathing cycles including an inspiration phase and an expiration phase, the method automatically implemented by a computer processor to process an acoustic data stream of wave amplitude versus time, the data stream originating from breathing sounds captured from an individual, wherein the computer-implemented method comprises, via the processor: segmenting the acoustic data stream plot into segments, each spanning a predetermined time period; transforming the data stream so as to produce a frequency spectrum in each segment; transforming the frequency spectrum in each segment so as to produce a plurality of magnitude of bins; identifying a sample including a plurality of segments and determining therein a sum of lower frequency magnitude bins within a predetermined lower frequency range and a sum of higher frequency magnitude bins within a predetermined higher frequency range; dividing the sum of higher frequency magnitude bins in the sampling by the sum of lower frequency magnitude bins so as to produce a mean bands ratio; determining a sum of lower frequency magnitude bins and a sum of higher frequency magnitude bins within a given segment; dividing the sum of higher frequency magnitude bins by the sum of lower frequency magnitude bins within said given segment so as to produce a first bands ratio; and determining if said first bands ratio is greater or less than said mean bands ratio by at least a predetermined multiplier; and digitally labeling said first bands ratio as inspiration if the first bands ratio is greater than the mean bands ratio by at least the predetermined multiplier; digitally labeling said first bands ratio as expiration if the first bands ratio is lesser than the mean bands ratio by at least the predetermined multiplier; and outputting said breathing cycles as one of inspiration and expiration according to said labeling.