Filter Basics Part 4: Key Filter Types And Technologies
Source: Knowles Precision Devices DLI

To choose the right filter for your application, you first need to have a solid understanding of how to evaluate filter types and identify the specific filter technology that will best suit your application.
Filter Types
To start, there are four filter response types that can be used to define the frequencies that will be removed or allowed by the filter.
Low Pass
Low pass filters allow frequencies below a given frequency to pass (be transmitted or received) while rejecting frequencies above the given frequency.
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Knowles Precision Devices DLI
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