low-pass filter(redirected from Lowpass filter)
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a device or material with the opposite effect from a high-pass filter; most tissues act as low-pass filters of ultrasound signals.
Farlex Partner Medical Dictionary © Farlex 2012
A filter that removes high-frequency waves from a sample, allowing only those below a specified frequency to pass.
See also: filter
Medical Dictionary, © 2009 Farlex and Partners