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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 .
In telecommunication, equalization is the reversal of distortion incurred by a signal transmitted through a channel. Equalizers are used to render the frequency response —for instance of a telephone line— flat from end-to-end.
Delay equalization; Equalization (communications), specific to communications systems; Equalization (audio), specific to audio signals and sound processing; Equalizing basin, a reservoir used to regulate water flow below a dam; Histogram equalization; RIAA equalization, the RIAA specification for the correct playback of gramophone records
RIAA equalization is a specification for the recording and playback of phonograph records, established by the Recording Industry Association of America (RIAA). The purposes of the equalization are to permit greater recording times (by decreasing the mean width of each groove), to improve sound quality, and to reduce the groove damage that would ...
Equalization payments are cash payments made in some federal systems of government from the federal government to subnational governments with the objective of offsetting differences in available revenue or in the cost of providing services. Many federations use fiscal equalisation to reduce the inequalities in the fiscal capacities of sub ...
The equalization formula is "based on a three-year average of economic growth". Since the 2008 recession, the Ontario economy got stronger which resulted in lower equalization payments. [16] In 2012–2013 Ontario's equalization payments increased to a peak of $3.3-billion. It was projected to be $2-billion in 2014–2015.
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The purpose of replay equalization is to compensate for high-frequency losses during recording, [28] which, in case of ferric cassettes, usually start at around 1–1.5 kHz. The choice of time constant is a somewhat arbitrary decision, seeking the best combination of conflicting parameters — extended treble response, maximum output, minimum ...