line noise

line noise

[′līn ‚nȯiz]
(communications)
Noise originating in a transmission line from such causes as poor joints and inductive interference from power lines.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.

line noise

(communications)
1. Spurious characters due to electrical noise in a communications link, especially an EIA-232 serial connection. Line noise may be induced by poor connections, interference or crosstalk from other circuits, electrical storms, cosmic rays, or (notionally) birds crapping on the phone wires.

2. Any chunk of data in a file or elsewhere that looks like the results of electrical line noise.

3. Text that is theoretically a readable text or program source but employs syntax so bizarre that it looks like line noise. Yes, there are languages this ugly. The canonical example is TECO, whose input syntax is often said to be indistinguishable from line noise. Other non-WYSIWYG editors, such as Multics "qed" and Unix "ed", in the hands of a real hacker, also qualify easily, as do deliberately obfuscated languages such as INTERCAL.
This article is provided by FOLDOC - Free Online Dictionary of Computing (foldoc.org)
References in periodicals archive ?
2) Power line noise: The noise generated from the power system is the major cause of noise in the process of monitoring ECG signals (also known as power line interference) [17].
presented an image post-processing framework for scanning tunneling microscopy (STM) to reduce strong spurious oscillations and scan line noise at fast scanning rates with preserving the features.
However, the pilot signal is affected due to channel transmission characteristics of the power line and the power line noise. Figure 6 shows the estimation model in the pilot point.
* Filtering using temporal filter: Mostly, the first step for EEG signal processing is a filtering process to eliminate subguassian interference (line noise), DC and reduce superguassian artifacts (eye blinks).
Murata developed this wire wound-type common mode choke coil for power line noise suppression capable of handling large currents (up to 5.6A) and wide operating temperature range (-55[degrees]C to 150[degrees]C) to meet this demand.
Five types of noise sources contribute to the acquired EMG signal: thermal noise of electronics in the recording equipment, power line noise, ambient noise of electromagnetic radiation, motion artefacts from electrode-skin interface or the cable connecting the electrode to the recording equipment, the electro-chemical (baseline) noise originating at skin-electrode interface [7], and inherent instability of the EMG signal due to the quasi-random nature of the firing rate of the muscular motor units [8].
Although they take exquisite daylight images, many produce "banding" and line noise that show up in low-light conditions.
FPGAs have also been used in many applications such as wireless sensors network (WSN) [23], pulse oximeter [24], adaptive filters reducing power line noise in ECG measurement system [25], and EMG measurement power line noise cancellation [26].
Their results showed reduction in the power line noise in the ECG signal using the proposed filter that has fewer coefficients and hence lesser computation time for real time processing.
Electronic components within the wall plate filter the inbound signal, separating the VDSL signal which provides voice, data and video service, from the POTS signal and line noise.
The larger the value of N, the greater the line noise reduction, but the longer the measurement takes to complete.