noise

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noise

 [noiz]
1. unwanted variations in a signal that result from imperfections in transmission; see also signal-to-noise ratio.
2. any disturbance in a visual signal being recorded in radiography; see also mottle.

noise

(noyz),
1. Unwanted sound, particularly a complex sound that lacks a musical quality because its various frequencies that comprise it are not whole-or-partial number multiples (harmonics) of each other. Compare: harmony.
2. Unwanted additions to a signal not arising at its source; for example, the 60-cycle frequency wave in an electrocardiogram; largely eliminated from machines after 1980 (includes visual noise on imaging studies).
3. Extraneous uncontrolled variables influencing the distibution of measurements in a set of data.

noise

random signals or disturbances that interfere with the normal flow of data through pathways of computers and other electronic devices.

noise

Electronics
Random variation in signals of the electromagnetic spectrum that carries no useful information from the source.

Imaging
A term defined in MRI as an undesirable background signal interference or other disturbance, which affects image quality.

Occupational medicine
OSHA requires that anyone with occupational exposure to greater than 89 decibels should wear ear protection.

noise

Electronics Random variation in signals of the electromagnetic spectrum that carries no useful information from the source. See Cymatics, Music therapy, Sound therapy Technology Poisson noise Fluctuation in the number of information carriers–photons, electrons, which appears as 'snow' in a cathode ray tube, a function of the statistical variation of the rays received by the detector and number of electrons produced by the photomultiplier. See White noise. Cf Chaos, Pink noise.

noise

(noyz)
1. Unwanted sound, particularly complex sound that lacks a musical quality because the various frequencies of which it is composed are not whole or partial number multiples (harmonics) of each other.
2. Unwanted additions to a signal not arising at its source; includes visual noise on imaging studies.
See: signal:noise ratio
3. Extraneous uncontrolled variables influencing the distibution of measurements in a set of data.
[M.E., fr. O.Fr., fr. L.L. nausea, seasickness]

noise

1. a loud, harsh and objectionable sound.
2. interference in an ecological or electronic system, but insufficient to stop the system.
3. in statistics when extraneous, uncontrolled variables cause errors in the distribution of data.

noise pollution
noise in the environment that adversely affects, in our context, the animal inhabitants. No such ill effects have been demonstrated.

Patient discussion about noise

Q. what causes the sound of cracking noises in the head all the time it was said i had acute sinusitis but honestly i think it is more . I don't know why i have cracking noises in my head . I am very concerned about this also my neck is always stiff feeling and aching all the time. . My eyes are very tired and i see blue spots and they hurt behind the eye very badly . I have headaches very often

A. wow...that really sounds serious...i have chronic sinusitis and i can tell you i had horrible headaches but nothing like you describe now. i would strongly consider going to a hospital and checking it out...
tell us what was the result!

Q. Tinnitus (Ringing and Other Ear Noise) Anybody have this problem? Urrrrrrrrrrr, I think I want to shoot myself,you know what I mean. It is worst than the chinese torture. Someone, please send me a good tip how to stop it. I have this for 4 yrs and it is driving me crazy. You cannot enjoy total complete silence. They say silence is golden but not when you have this ringgi in your ears. It gets worst when there is no noise. The only remedy I have is eating hot spicy curry, it helps for 2-3 wks and then it comes back again and then eating spicy food again. Listening to classical music helps to. Oh well.....just have to suck it up.

A. I've read that lipoflavinoids can help.

Q. what can cause a migrane other than light, noise, andno sleep? Well its been 4 days n 3 nights that I have it n it dont go away it was bad at first but then my right ear hurted as well as my right upper wisdomteeth It seems to be in only the right side and its been movin down towards my neck... Please if u have any info on wha the fuck is goin on with me let me know asap...

A. A migraine attack can be triggered also by caffeine consumption, alcohol consumption, certain medications, allergic reactions, physical or emotional stress, smoking, skipping meals, menstrual cycle fluctuations, menopause, and certain food containing-
1) tyramine- red wine, aged cheese, smoked fish, chicken liver, figs and some beans.
2) nitrates - like hot dogs, bacon and salami.

More discussions about noise
References in periodicals archive ?
Instead, Deirdre falls in love with Naoise, and together they escape Ireland to live in exile in Scotland.
In hospital on 12th April, aged 93 years, Rosa, beloved wife of the late Maurice and mother to Margaret Anne and Christopher, mother-inlaw to Alan and Vivien, grandmother to Frances, Catherine and Eve, Richard, David and the late Julia, great grandmother to Aidan, Noah, Lily, Noah and Naoise.
Naoise is slain, and Deirdre fatally stabs herself.
By offering health plan members immediate access to experienced, highly trained nurses, we can help facilitate better health outcomes," said Naoise Colgan, Vice President, Care Management Solutions at McKesson.
com Naoise McNally said the tough regulations around civil ceremonies forces many couples outside Dublin to opt for religious ceremonies.
Ollie Pears, trainer and rider of Naoise It looks as though the ground has come in his favour and he goes there in great form.
WELCOME TREATS: Colne Valley Specialist Arts College students Isobel Stubbs, Esther Curry, Naoise Gale, Georgia Finch and Tristan Whittle with hampers for the elderly JH131213Bcv-02 Purchase: www.
We are very pleased with the results of these surveys, because they demonstrate that the McKesson VITAL Nurse Advice Line helps accurately identify a caller s needs and ensure that he or she is directed to the right level of care at the right time, said Naoise Colgan, Vice President, Care Management Solutions at McKesson.
Naoise was an assured winner of a Leopardstown handicap on Thursday and looks good enough to defy a penalty in the mile handicap.
The six Colne Valley students whose work is now in the British Library, from left, Emily Duckett, Caitlan Gledhill, Charlotte Gibson, Amy Thompson, Imogen Smith and Naoise Gale
She's only 5lb higher for her course and distance success last March and Naoise, who she beat cosily, is now rated 69.
With a voice that could silence a room, Naoise Roo has created a stunning collection of dark rock majesty.