BIOMAT Database Logo BIOMAT Database Logo

Autoregressive modeling of lung sounds: characterization of source and transmission. 1989

V K Iyer, and P A Ramamoorthy, and Y Ploysongsang

In this communication, we discuss the application of autoregressive modeling to lung sounds analysis. The lung sounds source in the airway is modeled as a white noise source, consisting of one or a combination of the following sources: random white noise sequence, periodic train of impulses, and impulsive bursts of energy. The acoustic transmission through the lung parenchyma and chest wall is modeled as an all-pole filter. Using this method, the source and transmission characteristics of lung sounds are estimated separately, based on the lung sounds at the chest wall. To illustrate the potential validity of the model, lung sound segments in known disease conditions were selected from teaching tapes and the source and transmission characteristics were estimated by applying the model. The estimated characteristics were found to be consistent with current knowledge of the generation and transmission of lung sounds in the known conditions.

UI MeSH Term Description Entries
D008954 Models, Biological Theoretical representations that simulate the behavior or activity of biological processes or diseases. For disease models in living animals, DISEASE MODELS, ANIMAL is available. Biological models include the use of mathematical equations, computers, and other electronic equipment. Biological Model,Biological Models,Model, Biological,Models, Biologic,Biologic Model,Biologic Models,Model, Biologic
D011014 Pneumonia Infection of the lung often accompanied by inflammation. Experimental Lung Inflammation,Lobar Pneumonia,Lung Inflammation,Pneumonia, Lobar,Pneumonitis,Pulmonary Inflammation,Experimental Lung Inflammations,Inflammation, Experimental Lung,Inflammation, Lung,Inflammation, Pulmonary,Inflammations, Lung,Inflammations, Pulmonary,Lobar Pneumonias,Lung Inflammation, Experimental,Lung Inflammations,Lung Inflammations, Experimental,Pneumonias,Pneumonias, Lobar,Pneumonitides,Pulmonary Inflammations
D012135 Respiratory Sounds Noises, normal and abnormal, heard on auscultation over any part of the RESPIRATORY TRACT. Breathing Sounds,Crackles,Lung Sounds,Pleural Rub,Rales,Rhonchi,Stridor,Wheezing,Breathing Sound,Crackle,Lung Sound,Pleural Rubs,Rale,Respiratory Sound,Rhonchus,Rub, Pleural,Sound, Breathing,Sound, Lung,Sound, Respiratory,Sounds, Breathing,Sounds, Lung,Stridors,Wheezings
D006801 Humans Members of the species Homo sapiens. Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D000703 Analog-Digital Conversion The process of converting analog data to discrete, digital form. Analogue-Digital Conversion,Analog Digital Conversion,Analog-Digital Conversions,Analogue Digital Conversion,Analogue-Digital Conversions,Conversion, Analog-Digital,Conversion, Analogue-Digital,Conversions, Analog-Digital,Conversions, Analogue-Digital
D001249 Asthma A form of bronchial disorder with three distinct components: airway hyper-responsiveness (RESPIRATORY HYPERSENSITIVITY), airway INFLAMMATION, and intermittent AIRWAY OBSTRUCTION. It is characterized by spasmodic contraction of airway smooth muscle, WHEEZING, and dyspnea (DYSPNEA, PAROXYSMAL). Asthma, Bronchial,Bronchial Asthma,Asthmas

Related Publications

V K Iyer, and P A Ramamoorthy, and Y Ploysongsang
Order determination in autoregressive modeling of diastolic heart sounds.
February 1996, Journal of medical systems,
V K Iyer, and P A Ramamoorthy, and Y Ploysongsang
Detection of coronary occlusions using autoregressive modeling of diastolic heart sounds.
April 1990, IEEE transactions on bio-medical engineering,
V K Iyer, and P A Ramamoorthy, and Y Ploysongsang
Computerized classification of normal and abnormal lung sounds by multivariate linear autoregressive model.
January 2005, Conference proceedings : ... Annual International Conference of the IEEE Engineering in Medicine and Biology Society. IEEE Engineering in Medicine and Biology Society. Annual Conference,
V K Iyer, and P A Ramamoorthy, and Y Ploysongsang
Transmission of lung sounds through light clothing.
January 2008, Respiration; international review of thoracic diseases,
V K Iyer, and P A Ramamoorthy, and Y Ploysongsang
AR (q, v) modeling of normal lung sounds.
March 1994, Methods of information in medicine,
V K Iyer, and P A Ramamoorthy, and Y Ploysongsang
Mixture multilevel vector-autoregressive modeling.
February 2024, Psychological methods,
V K Iyer, and P A Ramamoorthy, and Y Ploysongsang
What sounds reach fetuses: biological and nonbiological modeling of the transmission of pure tones.
November 1998, Developmental psychobiology,
V K Iyer, and P A Ramamoorthy, and Y Ploysongsang
Characterization of upper limb movement-related EEG dynamics through fractional integrated autoregressive modeling.
November 2021, Annual International Conference of the IEEE Engineering in Medicine and Biology Society. IEEE Engineering in Medicine and Biology Society. Annual International Conference,
V K Iyer, and P A Ramamoorthy, and Y Ploysongsang
Autoregressive modeling and diagnostics for qPCR amplification.
April 2021, Bioinformatics (Oxford, England),
V K Iyer, and P A Ramamoorthy, and Y Ploysongsang
Modeling Touch and Palpation Using Autoregressive Models.
July 2018, IEEE transactions on bio-medical engineering,
Copied contents to your clipboard!