PROCESSING RECORDINGS OF A SUBJECT'S BREATHING

A method (an corresponding system) of processing recordings of a subject's breathing, the method comprising: obtaining a tracheal recording of the subject's breathing; dividing the tracheal recording into a plurality of segments, and, for each segment of the plurality of segments: computing energy of the tracheal recording of the segment; computing power spectral density of the tracheal recording of the segment; processing the computed power spectral density to form a set of poles for the segment; iterating through the set of poles from a lowest frequency to a highest frequency to produce a set of pitches for the segment by discarding all poles outside a defined range around 1.0, and upon finding a pole having a magnitude within a defined range around 1.0, finding all other poles having a frequency that is a multiple of the frequency of the respective pole, and applying criteria to the segment to determine whether the segment is a candidate segment for being a wheeze in the tracheal recording, wherein the criteria include that a respective segment includes at least one pitch; and identifying each candidate segment that satisfies a proximity criterion in respect of at least one other candidate segment as being part of a wheeze in the tracheal recording.