ground noise

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Noun1.ground noise - extraneous noise contaminating sound measurements that cannot be separated from the desired signal
background signal, background - extraneous signals that can be confused with the phenomenon to be observed or measured; "they got a bad connection and could hardly hear one another over the background signals"
surface noise - noise produced by the friction of the stylus of a record player moving over the rotating record
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References in periodicals archive ?
Electrical lines can be adulterated with high levels of harmonics, phase imbalance and ground noise. Each of these can kill the machine's motor.
This time around she was wearing a microphone after parents had previously complained back-This time around she was wearing a microphone after parents had previously complained back-back ground noise was drowning her out.
This time around she was wearing a microphone after parents had previously complained back-ously back ground noise was drowning her out.
In tests, when a ground noise induced spike appears on the pH signal, it is not present in the wireless transmitter output.
This has been particularly noticed in variable speed drive controllers that can produce local ground noise in excess of the EIA-485 common mode voltage limit.
Also, both devices use differential line inputs to minimise the effects of ground noise and EMI susceptibility, and also feature low quiescent current of 1 mA with both channels enabled.
Rustling Brush or Dragging A Stick: Here's another idea that makes deer curious with ground noise. After I hoist my bow, I'll often employ my haul rope in one of two ways.
Investigators are also focusing on other issues, such as how to quiet an unmanned aircraft so that its own sound doesn't interfere with the task of monitoring ground noise using airborne sensors.
USA!" McCain, by now accustomed to these kinds of interruptions, responded: "Please don't be diverted by the ground noise and the static," then added "America wants us to stop yelling at each other, OK?" He also promised his delegates to move the nation beyond "partisan rancor" and narrow self-interest in a speech that was markedly toned down from the blistering attacks launched against Obama during the first days of the convention.
For our simulations, the ground-to-ground noise is injected as a sine wave for simplicity, with peak-to-peak voltage equal to the peak-to-peak ground noise. FIGURE 8 shows the simulated eye diagram, which mimics the parBERT measurement in Figure 2, using 128 random bits simulated in a repeated fashion for 150 ns at 2.125 Gbps.
* The 3-level output topology greatly reduces installation and motor issues, such as longer motor leads (surge voltage), bearing currents (fluting), common mode noise (ground noise) and audible motor noise.