reference noise


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reference noise

[′ref·rəns ‚nȯiz]
(electronics)
The power level used as a basis of comparison when designating noise power expressed in decibels above reference noise (dBrn); the reference usually used is 10-12 watt (-90 decibels above 1 milliwatt; dBm) at 1000 hertz.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
References in periodicals archive ?
The ANC is a noise removing process and it can be realized in real-time processing application when the reference noise signal is obtained.
In the current paper, the effects of different traffic conditions (different speed distributions and different speed specifications obtained by empirical data collection in city of Budapest) on urban road traffic noise were theoretically compared to each other using the Japanese reference noise model which is calibrated for different traffic conditions.
The waveform and reference noise of the effective wave component are shown in Figure 5, from which it is found that wave sw12 is at least interfered by three types of environmental noises other than firmware noises.
PBXMate allows simple identification of the reference noise and provides, in real-time, a simple graphical feedback on the status of calls.
2, and the reference noise signal received by antenna 2 to extract the EMI signal of the VUT.
This is summed with the multiplied reference noise to attain the total phase noise in this region.
This latter calibration is also encoded in an EEROM table to provide a reference noise power over frequency and temperature domain.
Feed forward control is where a coherent reference noise input is sensed before it propagates past the canceling speaker.
The residual 1 GHz reference noise is then subjected to an increase of 20 log (N), where N is the multiplication factor.
The reference noise and the divider output noise contribution calculations follow.

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