White noise devices are available from numerous manufacturers in many forms, for a variety of different uses, including audio testing equipment, sound masking products, sleep-aid devices, and power-na ...
Being uncorrelated in time does not restrict the values a signal can take. Any distribution of values is possible (although it must have zero DC component). Even a binary signal which can only take on ...
Underwater sound has probably been used by marine animals for millions of years. The science of underwater acoustics began in 1490, when Leonardo da Vinci wrote the following about Tony Johns OAM rese ...
Tape hiss is the high frequency noise present on analogue magnetic tape recordings caused by the size of the magnetic particles used to make the tape. Effectively it is the noise floor of the recordin ...
Stochastic resonance is observed when noise added to a system changes the system's behaviour in some fashion. More technically, SR occurs if the signal-to-noise ratio of a nonlinear system or device i ...
Signal-to-noise ratio is defined as the power ratio between a signal (meaningful information) and the background noise (unwanted signal):\mathrm{SNR} = \frac{P_\mathrm{signal}}{P_\mathrm{noise}},where ...
Salt-and-pepper noise is a form of noise sometimes seen on images. It presents itself as sparsely occurring white and black pixels. An effective noise reduction method for this type of noise is a medi ...
In telecommunication, reference noise is the magnitude of circuit noise chosen as a reference for measurement.Many different levels with a number of different weightings are in current use, and care m ...
The graphic representation of the sound signal mimics a Brownian pattern. Its spectral density is inversely proportional to f?, meaning it has more energy at lower frequencies, even more so than pink ...
In telecommunications, received noise power is a measure of noise in a receiver. For example, the received noise power might be:The calculated or measured noise power, within the bandwidth being used, ...
Main article: Johnson–Nyquist noiseJohnson–Nyquist noise (sometimes thermal, Johnson or Nyquist noise) is unavoidable, and generated by the random thermal motion of charge carriers (usually electron ...
A radio noise source is a device that emits radio waves at a certain frequency, used to calibrate radio telescopes such that received data may be compared to a known value, as well as to find the foca ...
It has also recently been claimed that 1/f noise has been seen in higher ordered self constructing functions, as well as complex systems, both biological, chemical, and physical.The theory The basic d ...
Because quantization is a many-to-few mapping, it is an inherently non-linear and irreversible process (i.e., because the same output value is shared by multiple input values, it is impossible in gene ...
