Essays about: "Spectral decomposition method"

Showing result 11 - 15 of 15 essays containing the words Spectral decomposition method.

  1. 11. Effect of Petrophysical Parameters on Seismic Waveform Signatures : Review of Theory with Case Study from Frigg Delta Oil Field, Norway

    University essay from Uppsala universitet/Geofysik

    Author : Gardar Gislason; [2016]
    Keywords : AVO; poroelasticity; AVFO; WIFF; seismic attenuation; seismic dispersion; AVO; poroelasticitet; AVFO; WIFF; seismisk dampning; seismisk dispersion;

    Abstract : Conventional AVO analysis has been used for the past 4 decades to aid in locating oil and gas reservoirs for extraction. It is, however, not possible to use it to acquire information on the porosity of the rock, the fluid saturation or other important petrophysical parameters. READ MORE

  3. 12. On Identification of Hidden Markov Models Using Spectral and Non-Negative Matrix Factorization Methods

    University essay from KTH/Reglerteknik

    Author : Robert Mattila; [2015]
    Keywords : ;

    Abstract : Hidden Markov Models (HMMs) are popular tools for modeling discrete time series. Since the parameters of these models can be hard to derive analytically or directly measure, various algorithms are available for estimating these from observed data. READ MORE

  4. 13. Modulation Domain Improved Adaptive Gain Equalizer for Single Channel Speech Enhancement

    University essay from Blekinge Tekniska Högskola/Sektionen för ingenjörsvetenskap

    Author : Nettem.Adithyavalli ; Shakira Shaheen; [2013]
    Keywords : Speech Enhancement; Adaptive Gain Equalizer; Improved Adaptive Gain Equalizer;

    Abstract : Human speech is the main method for personal communication. During communication speech may get impaired with ubiquitous noise. Enduring interfering noise decreases speech intelligibility and makes speech communication troublesome. READ MORE

  5. 14. Simulation and modal analysis of instability and transition in a steady eccentric stenotic flow.

    University essay from KTH/Mekanik

    Author : Zeinab Moradi Nour; [2013]
    Keywords : ;

    Abstract : Direct numerical simulation (DNS) of steady flow, with Re = 750 at inlet, through stenosed pipe has been done to study transition and turbulence of the flow in the post-stenosis area. The pipe has 75% constriction by area reduction and 5% eccentricity of the main pipe diameter at the throat. READ MORE

  6. 15. Adaptive Gain Equalizer and Modulation Frequency Domain for Noise Reduction

    University essay from Blekinge Tekniska Högskola/Sektionen för ingenjörsvetenskap

    Author : Rizwan Ishaq; [2010]
    Keywords : Modulation domain; Adaptive gain equalizer; filter bank; COG; Gain; slow average; fast average;

    Abstract : Speech quality during the communication is generally e ected by the surrounding noise and interference. To improve the quality of speech signals and to reduce the amount of disturbing noise, speech enhancement is one of the emerging and most used branches of signal processing. READ MORE