SHIELDED COMMUNICATION TRANSDUCER
    4.
    发明公开
    SHIELDED COMMUNICATION TRANSDUCER 有权
    筛选通讯转换器

    公开(公告)号:EP1894330A4

    公开(公告)日:2016-07-13

    申请号:EP05815088

    申请日:2005-12-07

    CPC分类号: H04R23/008

    摘要: A system and method for detecting a sound originating from a body and enhancing signal-to-noise ratio with respect to noise originated outside the body is disclosed. The system comprises a light source for producing a quasi-monochromatic, spatially-coherent light beam; and interferometer for interfering alight beam originated from the source, incident upon the body and reflected from it, with a reference beam, which also originates from the light source; and a detector for detecting changes caused by motion of a least one interference fringe across the detector, and for generation a corresponding electric signal.

    WAVELET DEPULSING OF ULTRASOUND ECHO SEQUENCES
    8.
    发明公开
    WAVELET DEPULSING OF ULTRASOUND ECHO SEQUENCES 有权
    WAVELETDEPULSIERUNG超声回波序列

    公开(公告)号:EP1280460A4

    公开(公告)日:2009-06-17

    申请号:EP01932685

    申请日:2001-04-27

    摘要: Methods and associated apparatuses for imaging a target. An echo sequence image of the target is acquired (10) and a log spectrum of at least a portion of the echo sequence image is computed. A point spread function is estimated (14) by one of two methods. According to the first method, a low-resolution wavelet projection of the echo sequence log spectrum (22) is used as an estimate of the log spectrum of the point-spread function. According to the second method, an outlier-resistant wavelet transform of the echo sequence log spectrum is effected (44), followed by soft-thresholding (46) and an inverse wavelet transform (48). Under both methods, a frequency domain phase of the point spread function also is estimated. The relevant portion of the echo sequence image is deconvolved using the estimated point spread function.