psophometric filter

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• Psophometric weighting — refers to any weighting curve used in the measurement of noise. In the field of audio engineering it has a more specific meaning, referring to noise weightings used especially in measuring noise on telecommunications circuits. Key standards are… …   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

• DBrnC — represents an audio level measurement, typically in a telephone circuit, relative to the level of circuit noise, with the measurement of this level frequency weighted by a standard C message weighting filter. The C message weighting filter was… …   Wikipedia

• dBrnC — represents an audio level measurement, typically in a telephone circuit, relative to the circuit noise level, with the measurement of this level frequency weighted by a standard C message weighting filter. The C message weighting filter was… …   Wikipedia

• 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

• Noise weighting — A noise weighting is a specific amplitude vs. frequency characteristic that is designed to allow subjectively valid measurement of noise. It emphasises the parts of the spectrum that are most important. Usually, noise means audible noise, in… …   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

• 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

• 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

• Noise measurement — is carried out in various fields. In acoustics, it can be for the purpose of measuring environmental noise, or part of a test procedure using white noise, or some other specialised form of test signal. In electronics it relates to the sensitivity …   Wikipedia