low-pass filter

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Related to Low pass filter: Band pass filter, High pass filter

low-·pass fil·ter

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

low-pass filter

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
References in periodicals archive ?
Caption: Figure 11: Low pass filter with cascaded dumbbell shaped DGS integrated with microstrip transmission line along with T-junction stub: (a) schematic diagram; (b) simulated S-parameters [12].
The low pass filter, fabricated here, is a fixed beam structure (Figure 3), which is a micro machined capacitive bridge.
One is the comparative analysis on the performance of ideal low pass filter, Gaussian low pass filter, high pass filter, median filter, adaptive median filter and wiener filter in MRI brain medical image.
Once the currents (Ia,Ib,Ic) are transformed into (Id, Iq, I0) a high pass filter (HPF) or low pass filter (LPF) in feed forward arrangement is used to separate harmonic components from fundamental ones.
* The IK-HD5U is compatible with the IK-HD5H 3-CMOS camera head which features a removable optical low pass filter (OLPF) for dual-mode imaging applications.
The 2/3" XA[degrees]Trans CMOS II 12mn pixels sensor controls moire and false colour genA[degrees]eration without need for an optical low pass filter.
Digital filter in device for real time measurement and analysis of recuperative currents from electric locomotive acts like antialiasing filter, which is basically low pass filter. For sampling frequency [f.sub.s] = 192307.69 Hz, a low pass filter with cut-off frequency [f.sub.c] = 26kHz was designed.
The sensor on the D7100 does not have the optical low pass filter (OLPF) which is generally used to minimise moire effect or scenes with repeating patterns.
where [omega]' denotes the normalized angular frequency, [Z.sub.0] denotes the scaled impedance level of the in/out terminated ports, and [g.sub.1] is given by the prototype value of the Butterworth-type low pass filter. In order equate the two characteristics, the reactance of the proposed DGS unit section, shown in Figure 8, is matched with the reactance of the prototype low-pass filter, shown in Figure 9, at the desired frequency.
In addition, the product reduces optical form factor, and features advances in image processing algorithms, including functionalities related to defect correction, lens shading correction, gamma correction, color correction and interpolation, sharpening filter, low pass filter, backlight compensation, auto exposure, auto white balance, windowing, scaling, and 50/60Hz flicker cancellation, the company claims.
The real low pass filter will attenuate the signal from INHI to INLO, but will not completely eliminate it, and there will be residual traces of the input signal at INLO.
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