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Glite Dictionary
low-pass filter

low-pass filter

1 5.5
A device that lets slow changes in signals pass and reduces fast changes
  • noun
  • /loʊ pæs ˈfɪltər/
  • Specialized
translation icon : filtro de paso bajo
  • The audio engineer used a low-pass filter to eliminate high-frequency noise from the recording.
  • low-pass filter at 900 Hz
  • smoothed by a low-pass filter

Examples

  • The basic behavior of the direct path through the vent is a low-pass filter.

    Academic text (1990)

  • The bridge output voltage was amplified by a strain gauge conditioner, filtered by a low-pass filter, and sampled by a computer-mounted data acquisition board.

    Academic text (1995)

  • If we think in the context of the low pass filter, these are low frequencies.

  • So you kind of you use the low pass filter to sort of get more large scale changes and smooth out the acceleration data.

  • So step responses on the force sensor will not be perfectly square because that low pass filter is going to start smoothing things down.

  • The linear filter was a low-pass filter with a time constant of 80 ms.

    Academic text (1992)

  • The oceans serve as a low-pass filter, absorbing higher frequency events.

    Blog text (30)

  • To remove the noise, a fourth-order Butterworth low-pass filter is used.

    Academic text (2017)

  • Last, the signal is smoothed with a low-pass filter (4, 9).

    Academic text (1992)

  • Averaging thereby smoothes out these features when they are uncorrelated (similar to a low-pass filter).

    Academic text (2011)

Synonyms

filter
vslow-pass filter
  • Specialized
34 5.0

A device that allows some frequencies in electrical signals to pass and blocks others

is specific to passing lower frequencies while reducing higher ones

Antonyms

high-pass filter
  • Specialized
4.4

An electronic part that lets high sounds pass and reduces low sounds

How Smooth

spline
  • Specialized
1 8.2
Gaussian shape
  • Specialized
6.9
smoother
  • Specialized
7.1
low-pass filter
  • Specialized
1 5.5
median
  • Specialized
106 4.8
raw data
  • Specialized
21 3.5

Surface Forms

low-pass filter singular
low-pass filters plural

Morphology

low-pass + filter

A learner who knows 'low', 'pass' (to allow through) and 'filter' (a device that removes or attenuates certain signals) can straightforwardly infer a device that lets low-frequency signals pass while reducing higher ones. The compound follows transparent, compositional technical naming (e.g., French 'filtre passe-bas') so the meaning is directly derivable from the parts.

Etymology

Low-pass filter is a very literal name: imagine a gate that lets low, deep, slow sounds or signals pass through while the filter blocks or weakens the higher, faster sounds. So it means a device that lets low sounds through and reduces high ones.