Randy Cole

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This paper presents a method of extracting primary heart sound signals from chest-worn accelerometer data in the presence of motion artifacts. The proposed method outperforms noise removal techniques such as wavelet denoising and adaptive filtering. Results from six subjects show a primary heart signal detection rate of 99.36% with a false positive rate of(More)
STUDY OBJECTIVE To determine the effect of early administration of high-dose intravenous corticosteroids on duration of emergency room treatment and hospital admission rate in patients with acute asthma. DESIGN Randomized, double-blind, placebo-controlled trial. SETTING The emergency room of a large, urban hospital with primary and referral care(More)
The effect of applied positive airway pressure or PEEP on pericardial pressure was examined in closed-chest, anesthetized dogs with normal lungs and in animals with oleic acid-induced lung injury. Both groups were studied before and after vascular volume loading by dextran infusion. Pericardial pressure was measured using an air-filled flat balloon placed(More)
This work describes the factors limiting the performance in practical implementations of digital active noise cancellation (ANC) in commercial systems. This includes the codec delay, the secondary path variability, and the acoustic limitations. The causes for each limiting factor are studied and solutions are proposed that significantly improve system(More)