frequency weighting curve

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• Weighting curve — A Weighting curve is a graph of a set of factors, that are used to weight measured values of a variable according to their importance in relation to some outcome. The most commonly known example is frequency weighting in sound level measurement… …   Wikipedia

• Weighting — The process of weighting involves emphasising some aspects of a phenomenon, or of a set of data giving them more weight in the final effect or result. It is analogous to the practice of adding extra weight to one side of a pair of scales to… …   Wikipedia

• Weighting filter — A weighting filter is used to emphasise or suppress some aspects of a phenomenon compared to others, for measurement or other purposes. Contents 1 Audio application …   Wikipedia

• A-weighting — A graph of the A , B , C and D weightings across the frequency range 10 Hz – 20 kHz Video illustrating A weighting by analyzing a sine sweep (contains audio) A weighting is the most …   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

• The Bell Curve — For other uses, see Bell curve (disambiguation). The Bell Curve   …   Wikipedia

• Minimum audibility curve — is a standardised graph of the threshold of hearing versus frequency for an average human, and is used as the reference level when measuring hearing loss with an audiometer as shown on an audiogram. Audiograms are produced using a piece of test… …   Wikipedia

• Equal-loudness contour — An equal loudness contour is a measure of sound pressure (dB SPL), over the frequency spectrum, for which a listener perceives a constant loudness when presented with pure steady tones. The unit of measurement for loudness levels is the phon, and …   Wikipedia

• Audio noise measurement — is carried out when assessing the quality of audio equipment, such as is used in recording studios, broadcast studios, and in the home (Hi Fi).Noise in general refers to unwanted sound, often loud, but in audio systems it is the low level hiss or …   Wikipedia

• Sound level meter — Type 1 Sound Level Meter (Shown: Svantek 979) Sound level meters measure sound pressure level and are commonly used in noise pollution studies for the quantification of almost any noise, but especially for industrial, environmental and aircraft… …   Wikipedia

• Wow and flutter measurement — is carried out on audio tape machines, cassette recorders and players, and other analog recording and reproduction devices with rotary components (e.g. movie projectors, turntables (vinyl recording), etc.). This measurement quantifies the amount… …   Wikipedia