Topic
Noise
About: Noise is a research topic. Over the lifetime, 5111 publications have been published within this topic receiving 69407 citations. The topic is also known as: Мопсы танцуют под радио бандитов из сталкера 10 часов.
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TL;DR: Findings support the notion that physiological condition is a significant variable to consider in the analysis of acoustic characteristics of voice.
Abstract: Vowel spectral noise was studied in the sustained phonations of 48 men representing two levels of physiological condition (good and poor) within each of three chronological age groups (25 to 35, 45 to 55, and 65 to 75 years). Results indicated physiological condition was significantly correlated with noise rankings, whereas chronological age and noise were not significantly correlated. These findings support the notion that physiological condition is a significant variable to consider in the analysis of acoustic characteristics of voice.
52 citations
TL;DR: In this article, the effect of ambient noise on vocal output and the preferred listening level of conversational speech was investigated under conditions typical of everyday speech communication, and it was found that both speaker and listener try to compensate for the noise interference by raising the level of speech in order to keep the subjective loudness of speech (in noise equal to the loudness) in quiet.
52 citations
TL;DR: The deleterious effects of high levels of noise on newborns and health professionals show the need for interventions in routines and professionals and families' conduct.
Abstract: OBJECTIVE: Determine noise levels in the Neonatal Intensive Care Unit and identify the sources of these noises. METHODS: Quantitative, descriptive and exploratory study, carried out in Sao Paulo. Data was collected in April and May of 2005. A dosimeter was used to record a total of 96 hours of measurements. Nine hours of observation were also conducted to identify sources of noise. RESULTS: Leq noise levels ranged from of 61.3 to 66.6 dBA and were higher on the weekends. Peak values ranged from 90.8 to 123.4 dBC and the highest values were recorded at night. The sources of the noise were: beeping noises from ventilators and heart rate monitors, conversations between health professional and others. CONCLUSION: The deleterious effects of high levels of noise on newborns and health professionals show the need for interventions in routines and professionals and families' conduct.
52 citations
TL;DR: The effects of expanding the gross time-amplitude variations of 'speech-envelope noise' stimuli on speech recognition are investigated and it is suggested that the reduction in the modulation depth of the speech envelope caused by noise or reverberation could be compensated by expanding low-frequency temporal modulations.
51 citations
TL;DR: The results suggest that chickadees may require prior experience with fluctuating noise to adjust vocalizations in such a way as to minimize masking, and learning to cope may be an important part of adjusting to acoustic life in the city.
Abstract: Urban noise can interfere with avian communication through masking, but birds can reduce this interference by altering their vocalizations. Although several experimental studies indicate that birds can rapidly change their vocalizations in response to sudden increases in ambient noise, none have investigated whether this is a learned response that depends on previous exposure. Black-capped chickadees ( Poecile atricapillus ) change the frequency of their songs in response to both fluctuating traffic noise and experimental noise. We investigated whether these responses to fluctuating noise depend on familiarity with noise. We confirmed that males in noisy areas sang higher-frequency songs than those in quiet areas, but found that only males in already-noisy territories shifted songs upwards in immediate response to experimental noise. Unexpectedly, males in more quiet territories shifted songs downwards in response to experimental noise. These results suggest that chickadees may require prior experience with fluctuating noise to adjust vocalizations in such a way as to minimize masking. Thus, learning to cope may be an important part of adjusting to acoustic life in the city.
51 citations