Patent Number: 6,251,077

Title: Method and apparatus for dynamic noise reduction for doppler audio output

Abstract: A method and an apparatus for suppressing background noise in spectral Doppler imaging using adaptive noise-reduction low-pass filters. A pair of adaptive low-pass filters are arranged in the two audio Doppler channels for suppressing background noise in the audio Doppler data. The low-pass filtering can be implemented in the frequency domain, i.e., before the IFFT operation, or in the time domain, i.e., after the IFFT operation. Maximum frequency traces are fed into a filter selection block which prescribes the filter cutoffs of the low-pass filters.

Inventors: Mo; Larry Y. L. (Waukesha, WI), Kulakowski; Richard M. (Richfield, WI)

Assignee: General Electric Company

International Classification: A61B 8/06 (20060101); G01S 15/58 (20060101); G01S 15/00 (20060101); G01S 7/52 (20060101); A61B 008/06 ()

Expiration Date: 06/26/2018