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The study of avoiding, reducing or using signal noise is information theory. In telephony, artificial comfort noise is used as a substitute for natural background noise, to fill in artificial silence created by discontinuous transmission systems using voice activity detection. Background noise can also affect concentration.
Similarly, it has been discovered that even brief amounts of time spent on a busy metropolitan street can affect one's ability to maintain focus on a given task. Experimental findings suggest that spending time in a natural environment or even looking at pictures of nature can improve maintenance of directed attention.
Annoyance effects of noise are minimally affected by demographics, but fear of the noise source and sensitivity to noise both strongly affect the 'annoyance' of a noise. [42] Sound levels as low as 40 dB(A) can generate noise complaints [43] and the lower threshold for noise producing sleep disturbance is 45 dB(A) or lower. [44]
Signal-to-noise ratio (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. SNR is defined as the ratio of signal power to noise power, often expressed in decibels. A ratio higher than 1:1 (greater than 0 dB) indicates more signal than noise.
The toughening effect is put in place by increasing the system's resistance to noise over time. [16] Currently, the specific mechanisms that cause the cochlear toughening are not known. However, the OHCs and related processes are known to play a role. [ 17 ]
Food noise helps explain constant, intrusive thoughts about eating. ... it’s like background noise.” ... Food noise affects many people.
Stochastic resonance is a phenomenon that occurs in a threshold measurement system (e.g. a man-made instrument or device; a natural cell, organ or organism) when an appropriate measure of information transfer (signal-to-noise ratio, mutual information, coherence, d', etc.) is maximized in the presence of a non-zero level of stochastic input noise thereby lowering the response threshold; [1 ...
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