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2. Equalization (audio) - Wikipedia

   en.wikipedia.org/wiki/Equalization_(audio)

   Equalization (audio) A stereo graphic equalizer. For the left and right bands of the sound content, there are a series of vertical faders, which can be used to boost or cut specific frequency ranges. This equalizer is set to a smiley face curve, in which the mid-range sound frequencies are cut. Equalizers are also made in compact pedal-style ...

3. Sound reinforcement system - Wikipedia

   en.wikipedia.org/wiki/Sound_reinforcement_system

   Graphic equalizer. Equalizers are electronic devices that allow audio engineers to control the tone and frequencies of the sound in a channel, group (e.g., all the mics on a drumkit) or an entire stage's mix. The bass and treble controls on a home stereo are a simple type of equalizer.

4. RIAA equalization - Wikipedia

   en.wikipedia.org/wiki/RIAA_equalization

   RIAA equalization is a form of pre-emphasis on recording and de-emphasis on playback. A recording is made with the low frequencies reduced and the high frequencies boosted, and on playback, the opposite occurs. The net result is a flat frequency response, but with attenuation of high-frequency noise such as hiss and clicks that arise from the ...

5. Smiley face curve - Wikipedia

   en.wikipedia.org/wiki/Smiley_face_curve

   Smiley face curve. A smiley face curve or mid scoop [1] in audio signal processing is a target frequency response curve characterized by boosted low and high frequencies coupled with reduced midrange frequency power. This curve is often attained by users employing a graphic equalizer, which shows a graphic representation of a "smile" using its ...

6. RCA Dimensia - Wikipedia

   en.wikipedia.org/wiki/RCA_Dimensia

   RCA Dimensia. Dimensia ( / dɪˈmɛnsiə / dih-MEN-see-uh) was RCA 's brand name for their high-end models of television systems and their components ( tuner, VCR, CD player, etc.) produced from 1984 to 1989, with variations continuing into the early 1990s, superseded by the ProScan model line. After RCA was acquired by General Electric in 1986 ...

7. Tone control circuit - Wikipedia

   en.wikipedia.org/wiki/Tone_control_circuit

   Tone control is a type of equalization used to make specific pitches or frequencies in an audio signal softer or louder. It allows a listener to adjust the tone of the sound produced by an audio system to their liking, for example to compensate for inadequate bass response of loudspeakers or earphones, tonal qualities of the room, or hearing impairment.