Dual path noise detection and isolation for acoustic ambulatory respiration monitoring system
US8663125B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 30, 2011 |
| Grant date | Mar 4, 2014 |
| Priority date | — |
| Expiry date | Mar 19, 2032 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B7/003
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
Dual path noise detection and isolation for an acoustic respiration monitoring system detects noise in an acoustic signal recording lung sounds using two discrete noise detection techniques. A first technique detects portions of the signal that exhibit long-term, moderate amplitude noise by analyzing cumulative energy in the signal. A second technique detects portions of the signal that exhibit short-term, high amplitude noise by analyzing peak energy in the signal. Noisy portions of the signal are isolated using the combined results of the dual path detection. A respiration parameter is estimated using the signal without resort to the noisy portions and information based at least in part on the respiration parameter is outputted.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.