New Millenium Signal Processing Algorithms for Stethoscope Heart Auscultation

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Biosignetics Announces First Release of BSignal Heart Energy Processing Software

“Heart disease is the leading cause of death in the United States. It affects men and women of every age and race. More than 64 million Americans suffer from one or more forms of cardiovascular disease, including high blood pressure, coronary heart disease, congestive heart failure, stroke, and congenital heart defects”, indicated President G.W. Bush in his proclamation devoted to the American Heart Month 2004. President encouraged all Americans “to join the fight against heart disease and to learn more about how to prevent it”.

Joining this fight, Biosignetics Corporation (, the world’s leading provider of biosignature and dynamic energy signature analysis software and consulting services, announces the availability of BSignal 1.0. This first commercial release of the software brings many new possibilities in the sound based characterization of auscultatory documented human heart conditions (stenosis, regurgitation, splits, clicks, gallops, snaps, rumble, valve prolapse, murmurs, septal defect, patent ductus arteriosus, atrial septal defect).

BSignal incorporates a newly developed revolutionary technology to establish unique dynamic Heart Energy Signature (HES) and to track its evolution over time. This software allows converting complex multi-component non-gaussian heart sounds into simple and self-referencing X-ray-like images.

HES has a great potential to become de-facto standard to record, store, compare and track sound based heart diagnosis data. It can be especially effective in heart disease related research and in educating medical students and doctors to perform auscultation more effectively.

Present release incorporates user-friendly GUI with the powerful signal simulation tools that include signal processing filters, data reduction techniques with wavelets, spectrum, joint time frequency transformation, image manipulation techniques and the database of various heart sounds.


BSignal is available for PC windows NT, Win2000 and XP platforms. It is available in several versions.

Light version BSignal - Phonocardiograph is a Class I medical device. It is presently available only in educational versions; clinical release is scheduled for Fall 2004. Full-featured BSignal – Heart Energy Signature version is only presently available for educational purposes and for non-clinical research applications.

It can also be effectively utilized in other non-clinical applications such as “brain fingerprinting” and various analyses related to EEG and brain wave interpretations. Special version of BSignal–MHM is available for machine health monitoring and diagnosis, helicopter gearboxes, and joint-time frequency domain based signal processing. It contains set of specialized criteria for automatic mechanical failure detection.


1. American Heart Month 2004, By the President of the United States of America, A Proclamation


Our company's philosophy is that early detection requires instant availability of testing tools, intrinsic ability to detect weak signs of silent diseases, safety and simplicity of interpretations.

Biosignetics has developed and commercialized patent pending Heart Energy Signature format and method. Company continues its research and regulatory efforts to prepare 510(K) FDA application for clinical diagnosis version. Biosignetics is aggressively engaged in early detection research focusing on reliable detection of weak multi-component signals and patterns in otherwise noisy environment and is actively looking for clinical research partners in the medical community.

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Vladimir Kudriavtsev