Low pass filter
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- Acoustics: An electronic filter that allows only the frequencies lower than a given point to be heard, eliminating all frequencies above a given point. The exact filter point is equipment and/or setting specific, but is typically 6 - 12 KHz which helps eliminate sibilance and hissing. Source: Church Audio & Acoustics Glossary
- Electronics: A circuit designed to pass signals of low-frequency while attenuating those of higher frequency.