Sökning: "complexity reduction"

Visar resultat 36 - 40 av 302 avhandlingar innehållade orden complexity reduction.

  1. 36. Low-Complexity Signal Processing for Speech Enhancement and Audio Analysis

    Författare :Markus Lindroth; Benny Lövström; Ingvar Claesson; Fredric Lindström; Blekinge Tekniska Högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Applied Signal Processing; Tillämpad signalbehandling;

    Sammanfattning : In real-time signal processing there is a constraint to finish processing of an audio signal before the next audio segment is received. This makes it important to have signal processing algorithms with low computational complexity while still maintaining high quality results. LÄS MER

  3. 37. Environmental influences on the behavioural ecology of juvenile salmonids – the importance of rearing density

    Författare :Sofia Brockmark; Göteborgs universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; rearing density; structural complexity; familiarity; antipredator response; limited attention; social status; growth rate; smolt status; fin erosion; post-release performance; hatchery supplementation; brown trout; Atlantic salmon;

    Sammanfattning : Background and aims: Early environmental conditions are known to influence the phenotypic development of animals, including behavioural alterations. The overall aim of this thesis is to investigate the effects of density, social stability and structural complexity on growth, behaviour, and survival in the wild, using juvenile brown trout (Salmo trutta) and Atlantic salmon (Salmo salar) as model species. LÄS MER

  4. 38. Model Based Speech Enhancement and Coding

    Författare :David Yuheng Zhao; Bastiaan Kleijn; Peter Kabal; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; statistical model; Gaussian mixture mdel GMM ; hidden Markov model HMM ; moise reduction; Telecommunication; Telekommunikation;

    Sammanfattning : In mobile speech communication, adverse conditions, such as noisy acoustic environments and unreliable network connections, may severely degrade the intelligibility and natural- ness of the received speech quality, and increase the listening effort. This thesis focuses on countermeasures based on statistical signal processing techniques. LÄS MER

  5. 39. Accelerated granular matter simulation

    Författare :Da Wang; Martin Servin; Jin Ooi; Umeå universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; discrete element method; nonsmooth contact dynamics; multibody dynamics; granular media; simulation; projected Gauss-Seidel; validation; iron ore pellets; pelletising balling circuit; model reduction; design optimization;

    Sammanfattning : Modeling and simulation of granular matter has important applications in both natural science and industry. One widely used method is the discrete element method (DEM). It can be used for simulating granular matter in the gaseous, liquid as well as solid regime whereas alternative methods are in general applicable to only one. LÄS MER

  7. 40. Catalytic formation of ammonia from nitric oxide

    Författare :Emma Adams; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; NATURVETENSKAP; NATURAL SCIENCES; NOx reduction; Passive-SCR; In situ characterisation; Environmental heterogeneous catalysis; Ammonia formation;

    Sammanfattning : The emission of nitrogen oxides (NOx) from automobiles results in severe environmental and biological effects. Passive selective catalytic reduction (passive SCR) of NOx with ammonia (NH3) is a proposed method for abatement of NOx emissions in net lean-burn gasoline passenger vehicles. LÄS MER