Surgery – Diagnostic testing – Cardiovascular
Reexamination Certificate
2003-10-09
2008-10-21
Layno, Carl H. (Department: 3766)
Surgery
Diagnostic testing
Cardiovascular
Reexamination Certificate
active
07438689
ABSTRACT:
A heart signal comprising both first and second heart sounds and murmurs occurring due to various heart conditions is modeled by a sum of sinusoids automatically selected to represent the heart sound without a noise component. In an analysis step the signal parameters are measured, in an interpolation and transformation part Ω(t) and A(t) are interpolated from one window position to the next window position, and a synthesis part reconstructs the transformed heart signal. The transformations are transformations in either time scale (with unchanged frequency content) or frequency scale (with unchanged time progression), or both. Furthermore a dynamic transformation of an arbitrary heart signal to a fixed number of beats per minute is made possible.
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Bang & Olufsen Medicom A/S
Layno Carl H.
Morales Jon-Eric C
Safran David S.
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