preemphasis curve

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Preemphasis — In processing electronic audio signals preemphasis refers to a system process designed to increase, within a band of frequencies, the magnitude of some (usually higher) frequencies with respect to the magnitude of other (usually lower)… … Wikipedia
RIAA equalization — The RIAA equalization curve for playback of vinyl records. RIAA equalization is a specification for the correct playback of gramophone records, established by the Recording Industry Association of America (RIAA). The purpose of the equalization… … Wikipedia
ITU-R 468 noise weighting — The ITU R 468 weighting curve (originally defined in CCIR recommendation 468) is widely used when measuring noise in audio systems, especially in the UK, Europe, and former countries of the British Empire such as Australia and South Africa. It is … Wikipedia
Deemphasis — In telecommunication, deemphasis is a system process designed to decrease, within a band of frequencies, the magnitude of some (usually higher) frequencies with respect to the magnitude of other (usually lower) frequencies in order to improve the … Wikipedia
Emphasis (telecommunications) — In FM transmission, emphasis is the intentional alteration of the amplitude vs. frequency characteristics of the signal to reduce adverse effects of noise in a communication system. The high frequency signal components are emphasized to produce a … Wikipedia

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