7.09 coherence. Number calculated from the cross spectrum, ranging from 0 to 1 indicating to what degree the output of a system is linear, causal, and time invariant, with respect to the input. Annotation 1 The coherence,...
7.08 multi-band compressor. Amplifier in which the input signal is separated into two or more frequency bands, with compression applied differently to each band, with the output of the bands then...
7.05 non-linear signal processing hearing aid. A hearing aid having output that is not linearly related to the input. Annotation This term is also used to refer to devices having output which...
7.04 automatic gain control. Means (other than peak clipping) by which the gain is automatically controlled as a function of the level of the signal being amplified. Abbreviation,...
7.03 air pressure in an ear (or calibration cavity). Difference between the pressure of air within the external auditory canal (or in a calibration cavity) and atmospheric pressure at the location of the measurement. Unit, pascal (Pa). Annotation...
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