Sökning: "Bastiaan Kleijn"

Visar resultat 1 - 5 av 14 avhandlingar innehållade orden Bastiaan Kleijn.

  1. 1. Human perception in speech processing

    Detta är en avhandling från Stockholm : KTH

    Författare :Volodya Grancharov; Bastiaan Kleijn; Peter Kabal; [2006]
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; quality assessment; speech enhancement; postfilter; TECHNOLOGY Information technology Telecommunication; TEKNIKVETENSKAP Informationsteknik Telekommunikation;

    Sammanfattning : The emergence of heterogeneous networks and the rapid increase of Voice over IP (VoIP) applications provide important opportunities for the telecommunications market. These opportunities come at the price of increased complexity in the monitoring of the quality of service (QoS) and the need for adaptation of transmission systems to the changing environmental conditions. LÄS MER

  2. 2. Source and Channel Coding for Audiovisual Communication Systems

    Detta är en avhandling från Stockholm : Signaler, sensorer och system

    Författare :Moo Young Kim; Bastiaan Kleijn; Richard Heusdens; [2004]
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Telekommunikation; Information theory; high-rate theory; source coding; channel coding; quantization; Telekommunikation; TECHNOLOGY Information technology Telecommunication; TEKNIKVETENSKAP Informationsteknik Telekommunikation;

    Sammanfattning : Topics in source and channel coding for audiovisual communication systems are studied. The goal of source coding is to represent a source with the lowest possible rate to achieve a particular distortion, or with the lowest possible distortion at a given rate. Channel coding adds redundancy to quantized source information to recover channel errors. LÄS MER

  3. 3. A study on selecting and optimizing perceptually relevant features for automatic speech recognition

    Detta är en avhandling från Stockholm : KTH

    Författare :Christos Koniaris; W. Bastiaan Kleijn; Richard Heusdens; [2009]
    Nyckelord :;

    Sammanfattning : The performance of an automatic speech recognition (ASR) system strongly depends on the representation used for the front-end. If the extracted features do not include all relevant information, the performance of the classification stage is inherently suboptimal. LÄS MER

  4. 4. Paradigms for Real-Time Video Communication and for Video Distribution

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

    Författare :Ermin Kozica; W. Bastiaan Kleijn; Fernando Pereira; [2011]
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TECHNOLOGY; TEKNIKVETENSKAP;

    Sammanfattning : The use of new information technologies has drastically changed the way that we lead our lives. Communication technologies in particular have had a great impact on our day-to-day behavior. LÄS MER

  5. 5. Distribution Preserving Quantization

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

    Författare :Minyue Li; W. Bastiaan Kleijn; Jan Østergaard; [2011]
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TECHNOLOGY Information technology Telecommunication; TEKNIKVETENSKAP Informationsteknik Telekommunikation;

    Sammanfattning : In the lossy coding of perceptually relevant signals, such as sound and images, the ultimate goal is to achieve good perceived quality of the reconstructed signal, under a constraint on the bit-rate. Conventional methodologies focus either on a rate-distortion optimization or on the preservation of signal features. LÄS MER