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Equalization, or simply EQ, in sound recording and reproduction is the process of adjusting the volume of different frequency bands within an audio signal. The circuit or equipment used to achieve this is called an equalizer. [1][2] Most hi-fi equipment uses relatively simple filters to make bass and treble adjustments.
The original stand-alone unit was called the ITI ME-230 (Mastering Equalizer 230) and was the first commercially available parametric EQ. [1] [4] Massenburg and Macneal type-set and printed a paper entitled “Parametric Equalization” in 1972 and Massenburg submitted it to the Audio Engineering Society in Los Angeles.
George Y. Massenburg (born Baltimore, Maryland c. 1947) is a Grammy award-winning recording engineer and inventor. Working principally in Baltimore, Los Angeles, Nashville, and Macon, Georgia, Massenburg is widely known for submitting a paper to the Audio Engineering Society in 1972 regarding the parametric equalizer. [1]
Equalizers exist in professional sound reinforcement systems in three forms: shelving equalizers (typically for a whole range of bass and treble frequencies), graphic equalizers and parametric equalizers. Graphic equalizers have faders (vertical slide controls) which together resemble a frequency response curve plotted on a graph. The faders ...
De-essing is a dynamic audio editing process, only working when the level of the signal in the sibilant range (the ess sound) exceeds a set threshold. De-essing temporarily reduces the level of high- frequency content in the signal when a sibilant ess sound is present. [2] De-essing differs from equalization, which is a static change in level ...
Graphic equalizers are fixed frequency equalizers; The center frequency of each band can not be adjusted. The bandwidth or Q of each band can either be 1/3, 2/3 or one octave, giving a 31-band, 15-band, or 10-band for a graphic equalizer that covers the audio frequency range. The narrower the band the more precisely the feedback frequency can ...
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.
This page was last edited on 9 May 2011, at 02:34 (UTC).; Text is available under the Creative Commons Attribution-ShareAlike License 4.0; additional terms may apply ...
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