| 摘要 |
PROBLEM TO BE SOLVED: To provide a breath sound analyzer, capable of calculating an evaluation value for determining whether or not an abnormal sound is contained in the breath sound and an evaluation value for determining the kind of the abnormal sound in a simple method.SOLUTION: A peak section identification part 120 divides an input signal based on a breath sound into a plurality of frequency bands, and generates a peak section signal showing a relatively high level section and a non-peak section signal showing the section other than the peak section in signals of the respective frequency bands. Further a peak section composite signal obtained by synthesizing the plurality of peak section signals and a non-peak section composite signal obtained by synthesizing the plurality of non-peak section signals are generated. A feature quantity generating part 130 generates a first feature quantity from the peak section composite signal, and generates a second feature quantity from the non-peak section composite signal. An evaluation value calculating part 140 calculates a first evaluation value for determining whether or not an abnormal sound is contained in the breath sound and a second evaluation value for determining the kind of the abnormal sound using the first feature quantity and the second feature quantity. |
