1/f noise suppression
Suppression of Random Valued Impulse Noise in Image Processing: A Review
... as isolation module (IM), fringe module (FM) and similarity module(SM). First isolation module is applied to check the desired pixel value is in smooth region. If the result is true pixel may be noisy or situated on ...
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FPGA Based ECG Signal Noise Suppression
... Fig. 5 also have three ECG signals as similar as Fig. 4. Fig. 5 does not represent this work but it represents the waveform of noise removal system using traditional median filter method which is also mentioned in ...
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VLSI Implementation of Impulse Noise Suppression in Images
... are noise filtering and image ...Impulse noise in the process of signal acquisition and ...on noise-free pixels, the switching median filters are used which consists of impulse detection and ...
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Comparative Study on Speckle Noise Suppression Techniques for Ultrasound Images
... There are two thresholding functions frequently used, i.e. Hard threshold, Pan et al. [4], Soft threshold. Hard-thresholding function keeps the input if it is larger than the threshold; otherwise, it is set to zero. ...
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Improving the Autoregressive Modeling Method in Random Noise Suppression of GPR Data Using Undecimated Discrete Wavelet Transform
... Wiener filter is an efficient, stable, linear filter which is applied to noisy images. It requires the assumption that both the signal and the noise are stable second order functions. For this purpose, ...
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Noise generation and suppression in twin screw compressors
... Investigations of gas pulsations, regarded as the most important fluid source of noise, have been published by different authors. These began in 1986 when Fujiwara and Sakurai [4] first measured gas pulsation, ...
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Broadband suppression of phase-noise with cascaded phase-locked-loops for the generation of frequency ramps
... of 1 MHz is improved by more than 37 ...This noise reduction would be hard to reach with a fractional PLL as the reference frequency would have to be even higher than the one in the broadband ...
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A Novel Z-EBG Structure Embedded by DBCSRR for Suppression of Simultaneous Switching Noise
... bounce noise (GBN), especially the inevitable Simultaneous Switching Noise (SSN) caused by the continuous switching off of a large number of drive ...Many noise suppression methods have been ...
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Speech Enhancement and Noise Suppression using FIR Filters
... To obtain results that are within the vicinity of the speech enhancement and noise suppression, the range of speech signal i.e., 300Hz to 4000Hz was chosen. The stop band attenuation was chosen to be 60dB ...
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Noise Suppression in Speech Signals Using Kalman Filtering
... and noise AR ...and noise covariance.Mean square error is estimated in terms of noise covariance and polynomial ...when noise covariance is varying from ...
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New calibration noise suppression techniques for the GLORIA limb imager
... CRISTA-NF and MIPAS-STR were both conceived for observations in the UTLS, but with different priorities. The former was primarily designed for the study of transport and mixing processes. CRISTA-NF data from the African ...
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Robust impulsive noise suppression technique for iterative timing recovery
... Figure-6 and Figure-7 show the normalised reliability plots of the output turbo equalizer. The reliability plots are used to indicate the convergence of the APP-LLRs from the output of the turbo equalizer through ...
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Joint Multi-Pitch Detection Using Harmonic Envelope Estimation for Polyphonic Music Transcription
... In this work, a system for automatic transcription is pro- posed which is based on joint multiple-F0 estimation and subsequent note tracking. The constant-Q RTFI is used as a suitable time-frequency representation for ...
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Experiments on the Capability of Wavelet Domain Noise Suppression: Comparison with Spatial Domain Noise Suppression
... Image noise can occur during image acquisition, transmission or ...is noise suppression in signals; image signals ...the noise content. For the purpose of noise suppression, ...
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Impulsive Noise Suppression from Images with the Noise Exclusive Filter
... erent noise densities for the commonly known statistical distribution models, such as Uniform, Gaussian, Weibull, Beta, Exponen- tial, and Lognormal distribution models ...
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Using F-transform to remove image noise
... In this section we will only include main definitions of F-transform that will be used in the next sections of numerical implementations of image noise. Main definitions of fuzzy sets and transform, ...
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Estimation of Spectral Exponent Parameter of Process in Additive White Background Noise
... Figure 1(c), the γ estimation plot becomes as in Figure ...is 1 which is equal to the γ pa- rameter of the underlying process (in this case, flicker ...
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Noise Control by Suppression of Gas Pulsation in Screw Compressors
... Conclusion 19 20 21 22 Basic analysis has shown that the two most influential parameters affecting gas pulsations in a screw compressor discharge chamber are the pressure difference betw[r] ...
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Car Roof Rack Cavity Noise
... The cavity is termed shallow if the length to depth ratio (L/D, see Fig 2.3) is significantly large (typically > 1) to allow longitudinal (stream wise) waves to exist (Fig 2.1b). Oscillations in shallow ...
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The Application of a Sound-Intensity Analysis and an Experimental Modal Analysis for Determining the Noise Emissions of a Diesel Engine
... (sl. 1) p ri dveh hitro stih ...rta 1), sp e k te r h ru p a, ki ga oddaja celo ten od zunaj gnan m otor (črta 2) in spekter hrupa avtom obilskega m otorja z zgorevanjem pri polni obrem enitvi (črta ...
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