Sökning: "Perceptual Features"

Visar resultat 6 - 10 av 39 avhandlingar innehållade orden Perceptual Features.

  1. 6. Machine Learning Techniques with Specific Application to the Early Olfactory System

    Författare :Benjamin Auffarth; Anders Lansner; Tony Lindeberg; Tim Pearce; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; feature selection; image features; pattern classification; relevance; redundancy; distributional similarity; divergence measure; genetic algorithms; clustering algorithms; annealing; olfactory coding; olfactory bulb; odorants; glomeruli; property-activity relationship; olfaction; plasticity; axonal guidance; odor category; perception; spatial coding; population coding; memory organization; odor quality; SRA - ICT; SRA - Informations- och kommunikationsteknik;

    Sammanfattning : This thesis deals with machine learning techniques for the extraction of structure and the analysis of the vertebrate olfactory pathway based on related methods. Some of its main contributions are summarized below. LÄS MER

  2. 7. Perceptually motivated speech recognition and mispronunciation detection

    Författare :Christos Koniaris; Olov Engwall; Martin Cooke; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; feature extraction; feature selection; auditory models; MFCCs; speech recognition; distortion measures; perturbation analysis; psychoacoustics; human perception; sensitivity matrix; pronunciation error detection; phoneme; second language; perceptual assessment;

    Sammanfattning : This doctoral thesis is the result of a research effort performed in two fields of speech technology, i.e., speech recognition and mispronunciation detection. Although the two areas are clearly distinguishable, the proposed approaches share a common hypothesis based on psychoacoustic processing of speech signals. LÄS MER

  3. 8. Discrete Scale-Space Theory and the Scale-Space Primal Sketch

    Detta är en avhandling från Stockholm : KTH Royal Institute of Technology

    Författare :Tony Lindeberg; Jan-Olof Eklundh; Jan. J Koenderink; [1991]
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; Computer vision; low-level processing; scale-space; diffusion; Gaussian filtering; discrete smoothing; primal sketch; segmentation; descriptive elements; scale detection; image structure; focus-of-attention; tuning low-level processing; blob detection; edge detection; edge focusing; histogram analysis; junction classification; perceptual grouping; texture analysis; critical points; classification of blob events; bifurcations; drift velocity; density of local extrema; multi-scale representation; digital signal processing; Computer Science; Datalogi;

    Sammanfattning : This thesis, within the subfield of computer science known as computer vision, deals with the use of scale-space analysis in early low-level processing of visual information. The main contributions comprise the following five subjects:The formulation of a scale-space theory for discrete signals. LÄS MER

  4. 9. Perceptual Quality Metric Design for Wireless Image and Video Communication

    Detta är en avhandling från Karlskrona : Blekinge Institute of Technology

    Författare :Ulrich Engelke; ; [2008]

    Sammanfattning : The evolution of advanced radio transmission technologies for third generation mobile radio systems has paved the way for the delivery of mobile multimedia services. In particular, wireless image and video applications are among the most popular services offered on modern mobile devices to support communication beyond the traditional voice services. LÄS MER

  5. 10. Voice Imitation : A Phonetic Study of Perceptual Illusions and Acoustic Success

    Detta är en avhandling från Karlskrona : Blekinge Institute of Technology

    Författare :Elisabeth Zetterholm; [2003]
    Nyckelord :HUMANIORA; HUMANITIES; impersonation; Voice and speech imitation; target voice; individual voice; pitch register; voice quality; prosody; semantic information; phonology; dialect; articulatory timing; speech style; Phonetics; Fonetik; fonologi;

    Sammanfattning : This thesis is about voice imitations, more specifically impersonation. Questions are raised about the uniqueness of a person’s voice and speech behaviour and if it is possible to get close to another speaker’s voice and speech. Four main research questions are investigated in different studies. LÄS MER