Patent ID: 7153278
Filing Date: 2006-12-26
Classification: A61B

Abstract:
1. A sleep apnea syndrome diagnosing device, comprising: a snoring sound collector which collects snoring sound; a snoring sound holder which holds the collected snoring sound; a correlation coefficient calculator which divides a time axis of the snoring sound held in the snoring sound holder into plural cycles and which sequentially calculates a correlation coefficient between the snoring sound of one cycle and the snoring sound of a cycle next to the one cycle; and an output section which outputs the correlation coefficient calculated by the correlation coefficient calculator, wherein the correlation coefficient calculator comprises: a reference data moving period setter which sets a reference data moving period having a first length longer than a length of the cycle on the time axis of the snoring sound; a comparison data moving period setter which sets a comparison data moving period having a second length longer than the length of the cycle on the time axis of the snoring sound, the comparison data moving period being shifted from the reference data moving period by a first predetermined period; a combination calculator which calculates correlation coefficients respectively on combinations of cycles set by shifting within the reference data moving period by a second predetermined period each time and cycles set by shifting within the comparison data moving period by a third predetermined period each time; and a representative value extractor which extracts a representative value based on the correlation coefficients calculated by the combination calculator, wherein the combination calculator calculates correlation coefficients on all the combinations of the cycles set by shifting within the reference data moving period by the second predetermined period each time and the cycles set by shifting within the comparison data moving period by the third predetermined period each time.