Technology / Home Audio / Band-Limiting Filters: A low-pass and a high-pass filter in series, acting together to restrict (limit) the overall bandwidth of a system. Many audio amplifiers and processors, having switches labeled as 'Rumble' or 'Hiss,' are filters of this type.
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Technology / Email / Filters: Filters automatically move incoming emails into separate folders according to criteria that you specify. These criteria may be based on who the email is from, the priority, the subject, the main messa MORE
Entertainment / Photography / Dichroic Filters: Produced by metallic surface coatings on glass to form colors by interference of light. Used in high quality color enlarger heads. MORE
Entertainment / Photography / Gelatin Filters: Filters cut from dyed gelatin sheets and held in front of the lens or studio light. MORE
Technology / Email / Machine-Learning Filters: Filters run by machines that determine whether to block email based on algorithms that point to whether the message is likely spam. MORE
Entertainment / Photography / Tri-Color Filters: Filters in deep primarily colors used to expose color prints by the additive method. MORE