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How to activate sleep mode in noise Colorfit 2?

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Journal Article•DOI Effects of guidelines implementation in a surgical intensive care unit to control nighttime light and noise levels. Bernhard Walder, David Francioli, Jean-Jacques Meyer, Michel Lançon, Jacques-A. Romand - Show less +4 more 01 Jul 2000-Critical Care Medicine 174 Citations	All measured noise levels were high during both periods, which could contribute to sleep disturbance, and the implementation of guidelines significantly lowers some important noise levels.
Journal Article•DOI Noise emitted from road, rail and air traffic and their effects on sleep Barbara Griefahn, Anke Marks, Sibylle Robens - Show less +2 more 08 Aug 2006-Journal of Sound and Vibration 180 Citations	The equivalent noise level seems to be a suitable predictor for subjectively evaluated sleep quality but not for physiological sleep disturbances.
Journal Article•DOI Daytime noise and subsequent night sleep in man. B. Fruhstorfer, Heinrich Fruhstorfer, Peter Grass - Show less +2 more 01 Jan 1984-European Journal of Applied Physiology 30 Citations	The findings support the assumption that strong daytime noise may interfere with subsequent sleep processes.
Journal Article•DOI Sleep disturbance caused by meaningful sounds and the effect of background noise Seiichiro Namba, Sonoko Kuwano, Takehisa Okamoto - Show less +2 more 22 Oct 2004-Journal of Sound and Vibration 22 Citations	This suggests that this method is a useful tool to measure the sleep disturbance caused by noise under well-controlled conditions.
Open access•Journal Article•DOI Associations between noise sensitivity and sleep, subjectively evaluated sleep quality, annoyance, and performance after exposure to nocturnal traffic noise A Marks, B Griefahn - Show less +1 more 01 Jan 2007-Noise & Health 95 Citations	The results suggest that alterations of subjective evaluation of sleep were determined by physical parameters of the noise but modified by individual factors like noise sensitivity.
Journal Article•DOI Field study of noise‐induced sleep disturbance Sanford Fidell, Karl S. Pearsons, Barbara G. Tabachnick, Richard Howe, Laura Silvati, David S. Barber - Show less +5 more 01 Aug 1995-Journal of the Acoustical Society of America 71 Citations	Although the present findings do not resemble those of laboratory studies of noise‐induced sleep interference, they are in good agreement with the results of other field studies.
Journal Article•DOI Aircraft noise effects on sleep: a systematic comparison of EEG awakenings and automatically detected cardiac activations. Mathias Basner, Uwe Müller, Eva-Maria Elmenhorst, Götz Kluge, Barbara Griefahn - Show less +4 more 28 Aug 2008-Physiological Measurement 23 Citations	This inexpensive, objective and non-invasive method facilitates large-scale field studies on the effects of traffic noise on sleep.

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