Signal To Noise Ratio

Signal-to-noise ratio (often abbreviated SNR or S/N) is a measure used in science and engineering that compares the level of a desired signal to the level of background noise.

From http://en.wikipedia.org/wiki/Signal-to-noise_ratio

It is defined as the ratio of signal power to the noise power, often expressed in decibels. A ratio higher than 1:1 (greater than 0 dB) indicates more signal than noise. While SNR is commonly quoted for electrical signals, it can be applied to any form of signal (such as isotope levels in an ice core orbiochemical signaling between cells).

The signal-to-noise ratio, the bandwidth, and the channel capacity of a communication channel are connected by theShannon–Hartley theorem.

Signal-to-noise ratio is sometimes used informally to refer to the ratio of useful information to false or irrelevant data in a conversation or exchange. For example, in online discussion forums and other online communities, off-topic posts andspam are regarded as "noise" that interferes with the "signal" of appropriate discussion.


RELATED ARTICLESExplain
OKFN Community Integration
Terminology
Signal To Noise Ratio
Potential for low Signal To Noise Ratio (SNR)
What issues are raised by connecting people?
Feed Aggregator
Knowledge Federation
Open Source
Sensemaking
User Experience -- UX
Graph of this discussion
Enter the title of your article


Enter a short (max 500 characters) summation of your article
Enter the main body of your article
Lock
+Comments (0)
+Citations (0)
+About
Enter comment

Select article text to quote
welcome text

First name   Last name 

Email

Skip