For Noise we have terms and definitions in 24 topics. The topics are Car Audio, Cinematography, Computer Technology, DVD, DVD and CD, Dream, Drugs, Electronic Cinematography, Environment, Film Production, Finance, Frauds and Scams, Health Informatics, Home Theater, Image Editing, MRI, Noise Control Engineering, Non-Profit Marketing, Ordination, Photography, Public Relations, Scanner, Technology and UPS.

Noise (Car Audio)

An unwanted electrical signal or sound. (e.g., We told Frankie to watch out for that discount amp because it had too much noise.)

Noise (Cinematography)

In audio systems, noise is the electrical interference or other unwanted sound introduced into the system (i.e. hiss, hum, rumble, crosstalk, etc). (Sound)

Noise (Computer Technology)

An extraneous, unwanted signal, often over an analog phone line, that can cause communication interference or transmission errors. Possible sources are fluorescent lighting, radios, TVs, or bad wiring.

Noise (DVD)

Irrelevant, meaningless, or erroneous information added to a signal by the recording or transmission medium or by an encoding/decoding process. An advantage of digital formats over analog formats is that noise can be completely eliminated (although new noise may be introduced by compression).

Noise (DVD and CD)

Irrelevant, meaningless, or erroneous information added to a signal by the recording or transmission medium or by an encoding/decoding process. An advantage of digital formats over analog formats is that noise can be completely eliminated (although new noise may be introduced by compression).

Noise (Dream)

If you hear a strange noise in your dream, unfavorable news is presaged. If the noise awakes you, there will be a sudden change in your affairs.

Noise (Drugs)

Heroin

Noise (Electronic Cinematography)

In a cable or circuit, any extraneous signal which tends to interfere with the signal normally present in or passing through the system.

Noise (Environment)

Product-level or product-volume changes occurring during a test that are not related to a leak but may be mistaken for one.

Noise (Film Production)

In audio systems, noise is the electrical interference or other unwanted sound introduced into the system (i.e. hiss, hum, rumble, crosstalk, etc). (Sound)

Noise (Finance)

Price and volume fluctuations that can confuse interpretation of market direction. Used in the context of general equities. Stock market activity caused by program trades, dividend rolls, and other phenomena not reflective of general sentiment. Antithesis of real.

Noise (Frauds and Scams)

Market activity caused by program trades and other circumstances that are not reflective of general opinion.

Noise (Health Informatics)

Unwante signa tha i adde t transmitte messag whil bein carrie alon channel an distort th messag fo th receiver See channel.

Noise (Home Theater)

An unwanted portion of a signal such as hiss, hum, whine, static, or buzzing.

Noise (Image Editing)

A term used to describe the occurrence of pixels within in an image that contain random colors. Also refers to a filter in Photoshop that can sometimes be used to give a smoother, more natural appearance to graduated screens. This filter is also used for special effects.

Noise (MRI)

An undesirable background interference or disturbance that affects image quality. NSA - the number of signal averages performed during the scan. See also NEX and Signal Averaging.

Noise (Noise Control Engineering)

Undesired sound.

Noise (Non-Profit Marketing)

Confusion caused by too many messages trying to be delivered at one time.

Noise (Ordination)

This term is very difficult to define, but in general it refers to chance variation in nature which interferes with our ability to see pattern and infer processes. In its simplest form, noise is the same thing as statistical error (e.g. the error term in a regression). See Gauch (1982) for a more thorough discussion. Ideally, an ordination method will represent real, important gradients as its first, second, third, etc. axes. Axes which predominantly summarize noise should be among the last axes.

Noise (Photography)

Noise can be summarized as the visible effects of an electronic error (or interference) in the final image from a digital camera. Noise is a function of how well the sensor (CCD/CMOS) and digital signal processing systems inside the digital camera are prone to and can cope with or remove these errors (or interference). Visible noise in a digital image is often affected by temperature (high worse, low better) and sensitivity (high worse, low better). Some cameras exhibit almost no noise and some a lot and all the time. It's certainly been the challenge of digital camera developers to reduce noise and produce a "cleaner" image, and indeed some recent digital cameras are improving this situation greatly, allowing for higher and higher ISO's to be used without too much noise. Noise can also affect certain colour channels more than others, this is because a typical digital camera sensor (CCD/CMOS) is more sensitive to certain primary colours than others (often sensors are less sensitive to blue light) and so to compensate, these channels are amplified more than the others. Noise is also often amplified by the JPEG compression algorithm which reacts badly to a very noisy image (often introducing hue errors which weren't in the original noisy image). There are several techniques for cleaning a noisy image, and several products which have been developed to specifically perform this task. Long Exposure "Stuck Pixels“ - Another type of noise often referred to as "stuck pixels" or "hot pixels" occurs only with long exposures (1-2 seconds or more) and appear as fixed coloured dots (slightly larger than a single pixel). These stuck pixels can be fairly successfully removed by taking a "dark frame" either before or after the main shot and subtracting this from the original shot, this technique is detailed innoise reduction.

Noise (Public Relations)

Confusion caused by too many messages trying to be delivered at one time

Noise (Scanner)

Random information that distorts an image, especially the background distortion of an analog image before it is converted to digital format.

Noise (Technology)

1. Any interference that affects the operation of a device. 2. Unwanted electrical signals, produced either naturally or by the circuitry, that degrade the quality or performance of a communications channel. See also distortion.

Noise (UPS)

Random, sporadic, or multi-frequency electrical signals that become part of a transmission making the signal or information more difficult to identify.

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