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.
References in periodicals archive ?
The reference noise index has been determined applying the processing presented in [12] to the acquired cylinder pressure traces.
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.
Feed forward control is where a coherent reference noise input is sensed before it propagates past the canceling speaker.
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.
Under this agreement, ITC will develop DSP System-on-Chips (SoCs) that will be used as a platform for delivering NCTI's entire suite of ClearSpeech(R) algorithms, including Adaptive Speech Filter(TM), Acoustic Echo Canceller and Reference Noise Filter(TM).
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.
For a reference noise (coming mainly from the phase detector) of -X dBc/Hz, a signal in the cellular band (912 MHz) using a 30 kHz step and, therefore, a 30 kHz reference, has an N of 912/0.
Additionally, data can be compared when different measurement techniques are used because the same reference noise is applied to all of the noise data.

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