Sökning: "speech coding"

Visar resultat 1 - 5 av 40 avhandlingar innehållade orden speech coding.

  1. 1. Interframe quantization of spectrum parameters in speech coding

    Författare :Jan Lindén; [1996]
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; spectrum coding; memory vector quantization; interframe coding; speech coding; channel optimized vector quantization; linear predictive vector quantization; finite state vector quantization; line spectrum frequencies;

    Sammanfattning : .... LÄS MER

  2. 2. On speech spectrum coding : interframe memory and perception

    Författare :Fredrik Nordén; [2001]
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; speech coding; memory based quantization; distortion measure; vector quantization; spectrum coding; speech perception;

    Sammanfattning : .... LÄS MER

  3. 3. On error-robust source coding with image coding applications

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

    Författare :Tomas Andersson; Mikael Skoglund; Astrid Lundmark; [2006]
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; source coding; channel coding; joint source-channel coding; multiple description coding; image coding; vector quantization; channel optimized vector quantization; TECHNOLOGY Information technology Telecommunication; TEKNIKVETENSKAP Informationsteknik Telekommunikation;

    Sammanfattning : This thesis treats the problem of source coding in situations where the encoded data is subject to errors. The typical scenario is a communication system, where source data such as speech or images should be transmitted from one point to another. A problem is that most communication systems introduce some sort of error in the transmission. LÄS MER

  4. 4. Coding Speech for Packet Networks

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

    Författare :Jonas Lindblom; [2003]
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; packet loss concealment; voice over IP; speech coding; harmonic modeling; vector quantization; sinusoidal modeling; Gaussian mixture modeling; bounded support; frame erasure; variable dimension;

    Sammanfattning : The topic of this thesis is speech coding for packet networks. Problems related to the use of packet networks for voice communication are addressed. Real-time voice communication is for example very delay sensitive; if the total end-to-end delay in a telephone session grows large, it is perceived as annoying. LÄS MER

  5. 5. On codebook driven speech coding

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

    Författare :Anders Bergström; [1991]
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Vector quantization VQ ; glottal CELP coders; code excited linear predictive CELP coders; Speech coding; vector excited linear predictive coders;

    Sammanfattning : .... LÄS MER