low-pass filter

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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.

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
References in periodicals archive ?
The highpass and lowpass coefficients through the transform are the complements of the each other, and the original input signal can be reconstructed by means of these two time series together.
It is shown that the calculation of the IDFT for lowpass equivalent responses of passband frequency response measurements is obtained by two equivalent algorithms, which are denoted by Eqs.
The CNN templates for Gaussian-like lowpass filter is given as in Eq.
Kumar, "Synthesis of microstrip lowpass filter using defected ground structures," IET Microwaves, Antennas and Propagation, vol.
Firstly, the original image is decomposed in NSCT domain to obtain the lowpass subband coefficients and a series of the bandpass directional subband coefficients.
In this paper we thus present a very simple and efficient method in time domain for performing lowpass highpass bandpass and bandstop
It is apparent that this equation is now in the form of general nth-order all-pole lowpass current transfer function.
After application of the lowpass filtration we obtained series of dozen or so regular harmonic presented in Figure 9.
In the second step, four parameters are available for changing the lowpass filter to polarizer.
The waveform received at the receiver is filtered by the ideal lowpass filter B(f), passing only frequencies in the band [omega].
The experimental setup is divided into three parts, in first part ECG signals processed to remove baseline wander noise by designed FIR and IIR highpass filters, in second part high passed ECG signals passed through lowpass FIR and IIR filters to remove muscle noise artifact and in third part IIR notch filter used to remove 50/60 Hz power component noise as shown in Fig.
The ERP data were lowpass filtered at 20 Hz (24 dB/octave) for each condition.