In Active noise control (ANC), the secondary path has usually a time varying behavior. For these cases, an online secondary path modeling method that uses a auxiliary noise as a training signal is required to ensure convergence of the system. The modeling accuracy and the convergence rate are increased when a auxiliary noise with a larger variance is used. A sudden change in the secondary path ...

Crosstalk from digital to analog circuits can be causative of operation fails in analog-digital mixed LSIs. This paper describes modeling techniques and simulation strategies of the substrate coupling noise. A macroscopic substrate noise model that expresses the noise as a function of logic state transition frequencies among digital blocks is proposed. A simulation system based on the model is ...

background: noise is one of the harmful factors of industrial environments that may cause defect such as hearing defects, high blood pressure, irritation, sleep disturbances, increased respiratory rate and oxygen consumption. the residents and personnel working in industries around mehrabad airport continuously exposed to noise pollution caused by the traffic of passenger, war and training airp...

With sound level meters the measurement uncertainty is fixed and transparent, depending on the class of the instrument. The counterpart of the measurement, the noise simulation, has many more uncertainties. The uncertainties stem from the calculation standard used, the application of the model’s theoretical basis in a computer program and the construction of the data model. The uncertainty of t...

The inaccuracy of estimating the noise reference, to improve the quality of speech corrupted by additive noise, could cause additional musical artifacts to be introduced at the output of the processed speech. These musical artifacts could be so unbearable that the processed speech could be unrecognizable at the receiver end. In this paper, we introduce the use of a novel fuzzy neural network (F...

Underwater noise classification is of great significance for identifying ships as well other vehicles. Moreover, it helpful in ensuring a marine habitat-friendly, noise-free ocean environment. But challenge we are facing the small-sized underwater samples. Because influenced by multiple sources, often difficult to determine and label which source or two sources dominant. At present, research so...

Oscillator Modeling and Phase Noise by Brian Nguyen Limketkai Doctor of Philosophy in Engineering-Electrical Engineering and Computer Sciences University of California, Berkeley Professor Robert W. Brodersen, Chair Using a dynamical systems perspective, we develop a method to calculate phase noise in oscillators based on a particle diffusion model. Starting from the basic nonlinear equations of...

In this paper, we present a Stationary Wavelet Transform (SWT) based method for the purpose of despeckling the Synthetic Aperture radar (SAR) images by applying a maximum a posteriori probability (MAP) condition to estimate the noise free wavelet coefficients. The solution of the MAP estimator is based on the assumption that the wavelet coefficients have a known distribution. Rayleigh distribut...