Sökning: "Speech Quality"

Visar resultat 1 - 5 av 116 avhandlingar innehållade orden Speech Quality.

1. 1. Communication quality : a conceptual approach focusing on classroom assistive listening devices

   Författare :Johan Odelius; Luleå tekniska universitet; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Teknisk akustik; Engineering Acoustics;

   Sammanfattning : In a classroom an assistive listening device (ALD) is a system of external microphones that transmit sound from a sound source directly to students' hearing aids. An ALD can be a microphone close to the mouth which transmits a voice directly to listeners' hearing aids. LÄS MER

3. 2. Towards conversational speech synthesis : Experiments with data quality, prosody modification, and non-verbal signals

   Författare :Bajibabu Bollepalli; Joakim Gustafsson; Jonas Beskow; Matthew Aylett; KTH; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Speech synthesis; MPEG compression; Voice Conversion; Artificial Neural Net- works; Laughter synthesis; HTS; Computer Science; Datalogi;

   Sammanfattning : The aim of a text-to-speech synthesis (TTS) system is to generate a human-like speech waveform from a given input text. Current TTS sys- tems have already reached a high degree of intelligibility, and they can be readily used to read aloud a given text. For many applications, e.g. LÄS MER

4. 3. Entropy and Speech

   Författare :Mattias Nilsson; Bastian Kleijn; Sören Holdt Jensen; KTH; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; speech representation; energy concentration; entropy estimation; manifolds; Acoustics; Akustik;

   Sammanfattning : In this thesis, we study the representation of speech signals and the estimation of information-theoretical measures from observations containing features of the speech signal. The main body of the thesis consists of four research papers. Paper A presents a compact representation of the speech signal that facilitates perfect reconstruction. LÄS MER

5. 4. Vad gör kvalitet med utbildning? : Om kvalitetsbegreppets skilda innebörder och dess konsekvenser för utbildning

   Författare :Andreas Bergh; Ninni Wahlström; Bernt Gustavsson; Agneta Linné; Christina Segerholm; Örebro universitet; []
   Nyckelord :SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; education; concept of quality; educational policy; municipality; independent school; speech-act; conceptual history; Sweden; SOCIAL SCIENCES; SAMHÄLLSVETENSKAP; Education; Pedagogik; Pedagogik; Education;

   Sammanfattning : The aim of this dissertation is to investigate what linguistic meanings the concept of quality is imbued with in different educational arenas and to discuss the consequences of such meanings for education. From this aim the main research question is: What does the concept of quality do to education and what does education do to the concept of quality? The question indicates an interest in understanding how the concept of quality and education mutually influence each other. LÄS MER

7. 5. Human perception in speech processing

   Författare :Volodya Grancharov; Bastiaan Kleijn; Peter Kabal; KTH; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; quality assessment; speech enhancement; postfilter; Telecommunication; 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