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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.


Papers
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Patent
02 Aug 1995
TL;DR: In this paper, a transmitter directs a narrow RF ultrasonic beam through a body cavity to a receiver on the other side of the cavity, where the beam is steered to be intercepted by audio signal sources in the body cavity, such as a fetal heart or multiple fetal hearts.
Abstract: A transmitter directs a narrow RF ultrasonic beam through a body cavity to a receiver on the other side of the cavity The beam is steered to be intercepted by audio signal sources in the body cavity, such as a fetal heart or multiple fetal hearts, which modulate the ultrasonic beam The received parametric beam is demodulated and filtered to provide a relatively noise free audio reproduction of an audio signal source In one embodiment, two transmitters are steered independently to direct respective beams to respective receivers to produce two signals and, thus, a binaural audio reproduction of an audio signal source The audio reproduction is at a maximum when the two beams intersect at the audio signal source

17 citations

Proceedings Article
02 Aug 1996
TL;DR: This paper demonstrates a KDD method applied to audio data analysis, particularly, it presents possibilities which result from replacing traditional methods of analysis and acoustic signal processing by KDD algorithms when restoring audio recordings affected by strong noise.
Abstract: This paper demonstrates a KDD method applied to audio data analysis, particularly, it presents possibilities which result from replacing traditional methods of analysis and acoustic signal processing by KDD algorithms when restoring audio recordings affected by strong noise.

17 citations

Proceedings ArticleDOI
19 Apr 2015
TL;DR: A method to enhance a speech signal disturbed by wind noise by exploiting the spectral characteristics of speech and noise and the pitch frequency of speech to generate a binary mask for the noise STPS estimation.
Abstract: This paper presents a method to enhance a speech signal disturbed by wind noise. The wind noise is generated by turbulences in an air stream close to the microphone which picks up the desired speech signal. As the majority of speech enhancement algorithms works in the frequency domain, the short term power spectrum (STPS) of the unwanted noise must be estimated to reduce the wind noise. Conventional algorithms for background noise estimation fail in the case of wind noise due to its non-stationary characteristics. Hence, it is necessary to use special methods for the estimation and reduction of wind noise. The proposed system exploits the spectral characteristics of speech and noise to estimate the wind noise STPS. The spectral power distribution of wind noise and the pitch frequency of speech are used to generate a binary mask for the noise STPS estimation. This method is dependent on a precise pitch estimation. To reduce estimation errors a robust pitch estimation method using knowledge from prior estimates is presented. An evaluation and comparison with other wind noise reduction techniques shows improved speech enhancement of the proposed method.

17 citations

Journal ArticleDOI
TL;DR: A controller for the case when the noise source components are sparsely distributed in space is developed, designed as in conventional ANC to minimize the residual errors but with an additional term containing an ℓl norm regularization applied to the signal magnitude.
Abstract: Multi-channel active noise control (ANC) is currently an attractive solution for the attenuation of low-frequency noise fields, in three-dimensional space. This paper develops a controller for the case when the noise source components are sparsely distributed in space. The anti-noise signals are designed as in conventional ANC to minimize the residual errors but with an additional term containing an ll norm regularization applied to the signal magnitude. This results in that only secondary sources close to the noise sources are required to be active for cancellation of sparse noise fields. Adaptive algorithms with low computational complexity and faster convergence speeds are proposed.

17 citations


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Performance
Metrics
No. of papers in the topic in previous years
YearPapers
20221
2021125
2020217
2019224
2018243
2017214