What is another word for low-pass filter?
Pronunciation: [lˈə͡ʊpˈas fˈɪltə] (IPA) 
A low-pass filter is an electronic circuit that allows low frequency signals to pass through while blocking high frequency signals. There are a variety of synonyms that can be used for this type of filter, including base-cutoff filter, high-cut filter, or low-frequency filter. Generally, low-pass filters are used in audio processing to remove unwanted high frequency noise or to keep certain frequency ranges clear for specific instruments or vocals. They are also commonly used in communication systems to eliminate high frequency interference and improve signal quality. Regardless of the specific synonym used, the purpose of a low-pass filter remains the same: to isolate and amplify low frequency signals while suppressing high frequency noise.
