Sökning: "enhancement"

Visar resultat 1 - 5 av 827 avhandlingar innehållade ordet enhancement.

  1. 1. Knowledge-based speech enhancement

    Författare :Sriram Srinivasan; Bastiaan Kleijn; Rainer Martin; KTH; []
    Nyckelord :ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; speech enhancement; noise reduction; linear predictive coe±cients; autoregressive; codebooks; maximum-likelihood; Bayesian; nonstationary noise; blind source separation.; Telecommunication; Telekommunikation;

    Sammanfattning : Speech is a fundamental means of human communication. In the last several decades, much effort has been devoted to the efficient transmission and storage of speech signals. With advances in technology making mobile communication ubiquitous, communications anywhere has become a reality. LÄS MER

  2. 2. Image Analysis and Enhancement with Applications in Medicine

    Författare :Lars Floreby; Institutionen för elektro- och informationsteknik; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Zubal; segmentation; Compton; SPECT; morphological; enhancement; multiscale; dynamic programming; motion estimation; optical flow; echocardiography; speckle; Image analysis; ultrasound; Signalbehandling; Signal processing; Fourier surface.;

    Sammanfattning : This thesis consists of six parts in which methods for image analysis and processing are studied. Two-dimensional medical images, image sequences, and three-dimensional image volumes are considered. LÄS MER

  3. 3. Speech enhancement for mobile communications

    Författare :Harald Gustafsson; []
    Nyckelord :ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; speech enhancement; spectral subtraction;

    Sammanfattning : Three major applications of speech enhancement have been studied: noise reduction for mobile telephone handsfree accessories, noise reduction for handheld mobile telephones, and short delay noise reduction for frame-less telephone systems. During conversation, both hearing and speaking adapt to the background noise in a noisy environment. LÄS MER

  4. 4. On the Enhancement of Audio and Video in Mobile Equipment

    Författare :Andreas Rossholm; []
    Nyckelord :ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Audio enhancement; video enhancement; active noise cancellation; video coding; mobile equipment;

    Sammanfattning : Use of mobile equipment has increased exponentially over the last decade. As use becomes more widespread so too does the demand for new functionalities. The limited memory and computational power of many mobile devices has proven to be a challenge resulting in many innovative solutions and a number of new standards. LÄS MER

  5. 5. Speech enhancement for mobile communications

    Författare :Harald Gustafsson; []
    Nyckelord :ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Speech enhancement; Spectral subtraction; Dual-microphone spectral subtraction;

    Sammanfattning : .... LÄS MER