Patent ID: 7416531
Filing Date: 2008-08-26
Classification: A61B

Abstract:
1. An assembly for detecting and processing physiological heart sounds, comprising: a sensor for sensing physiological heart sounds so as to acquire analog physiological signals; an amplifier configured to amplify a first frequency range of said physiological signals to a first level and configured to amplify a second frequency range of said physiological signals to a second level, said second level being higher than said first level, the amplification of the signals in the second frequency range being substantially constant within the second frequency range, the amplification of the signals above the second frequency range declining with respect to frequency from the upper end of the second frequency range, said first frequency range of physiological signals including frequencies that correspond to basic heart sounds, said second frequency range of said physiological signals including frequencies that correspond to sounds of interest, the sounds of interest having frequencies that are higher than frequencies of the basic heart sounds; and an analog to digital converter configured to sample the resulting amplified physiological signals in at least said second frequency range and convert the resulting sampled signals to digital signals.