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 ?
Control of bandstop response of Hi-Lo microstrip low-pass filter using slot in ground plane.
Here, we restrict ourselves to discussing the context of the basic low-pass filter defined on the entire real line, because once this is constructed, a wide variety of related filters and computational tools can be obtained.
I also did my usual run of frequency-response measurements, and found that the unit was essentially as good as my other subs down to the above-noted 35 Hz, provided that the low-pass filter was bypassed.
This paper introduces an implementation form for the digital low-pass filter, which achieves a good precision of output evaluation, while keeping low the computational effort.
Semtech's proprietary digital low-pass filter samples the PWM dimming signal to extract the duty cycle information and maps this into the current setting DACs.
To view a demonstration showing how to create a 9th order low-pass filter with Bessel response in 30 seconds, see http://filterdemo.
The low-pass filters are located between each analog telephone bridged to the ADSL line and the subscriber's telephone jack.
4 also gives users the ability to add voltage-controlled variable gain stages, low-corner frequency bilinear low-pass filters, sum/difference integrators and square root functions to their analog circuit designs -- simply by dragging and dropping Configurable Analog Modules (CAMs).
The PLL250 series, targeted at the GSM/EDGE basestation market, consists of a voltage controlled oscillator (VCO), PLL synthesizer IC, PLL loop filter, high-isolation SPDT RF switch, two buffer amplifier stages, low-pass filters on all power supply lines, and filters on all PLL IC programming lines.
The splitter modules are high performance low-pass filters that prevent high frequency energies on the LINE from reaching the POTS system, and provides isolation from the impedance effects of the POTS system on the ADSL modem.
The Single Package Radio solution combines a transceiver, power amplifier (PA) and associated controller, two surface acoustic wave (SAW) filters, and a switchplexer module that includes switches and low-pass filters in a compact 40-pin 13x13-millimeter laminate multi-chip module (MCM) package with excellent insulation properties.