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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13 May 2002
TL;DR: A microphone array post-filtering approach, applicable to adaptive beamformer, that differentiates non-stationary noise components from speech components is introduced, based on a Gaussian statistical model and combined with an appropriate spectral enhancement technique.
Abstract: Microphone array post-filtering allows additional reduction of noise components at a beamformer output. Existing techniques are either restricted to classical delay-and-sum beamformers, or are based on single-channel speech enhancement algorithms that are inefficient at attenuating highly non-stationary noise components. In this paper, we introduce a microphone array post-filtering approach, applicable to adaptive beamformer, that differentiates non-stationary noise components from speech components. The ratio between the transient power at the beamformer primary output and the transient power at the reference noise signals is used for indicating whether such a transient is desired or interfering. Based on a Gaussian statistical model and combined with an appropriate spectral enhancement technique, a significantly reduced level of non-stationary noise is achieved without further distorting speech components. Experimental results demonstrate the effectiveness of the proposed method.
76 citations
TL;DR: It is suggested that amplitude regulation of vocalizations contibutes to signal transmission distance along with the established relationships between singing behaviour, acoustic structure and habitat.
76 citations
TL;DR: In this paper, three groups of Naval Ratings worked for two sessions each at a subtraction task involving a considerable immediate memory load, one group had both sessions in relative quiet (70 db), a second had the first session in 100 db noise and the second in quiet, and the third group had noise and quiet in reverse order.
Abstract: Three groups of Naval Ratings worked for two sessions each at a subtraction task involving a considerable immediate memory load. One group had both sessions in relative quiet (70 db), a second had the first session in 100 db noise and the second in quiet, and the third group had noise and quiet in the reverse order.In the first session the noise group slowed down at solving the subtractions as time went on, relative to the groups working in quiet. A similar difference appeared in the second session, but, in addition, there was an aftereffect of noise such that the subjects who had had noise previously slowed down relative to those who had not.Slowing down of performance with time was in all groups most marked in extroverts.These results suggest firstly that intellectual work as well as simple sensory tasks must be regarded as endangered by noise. Secondly, there may be harmful aftereffects from noise, but it is not clear whether these will appear in any situation or only in one similar to that in which th...
75 citations
TL;DR: In this paper, the authors examined longitudinal associations of aircraft noise exposure at primary school on children's reading comprehension, noise annoyance, and psychological health at secondary school using a six-year follow-up of 461 children.
75 citations
Patent•
22 Jun 2007
TL;DR: In this paper, a system for facilitating conversational communications in an environment with background noise, including a microphone for sensing the background noise and a signal processor configured to process the microphone output and produce an anti-noise electrical output, was presented.
Abstract: A system for facilitating conversational communications in an environment with background noise, the system including a microphone for sensing the background noise, a signal processor configured to process the microphone output and produce an anti-noise electrical output, and a directional speaker array configured to receive the anti-noise electrical output and directionally broadcast anti-noise audio output, the anti noise audio output destructively interfering with the environmental background noise.
75 citations