Sökning: "Speech quality measurement"

Visar resultat 1 - 5 av 8 uppsatser innehållade orden Speech quality measurement.

1. 1. nsAnalyser : Speech quality testing application for telephone service

   M1-uppsats, KTH/Data- och elektroteknik

   Författare :Alexander Stahl; [2013]
   Nyckelord :Speech quality measurement; 3SQM; PESQ; Ozeki; SIPSorcery; phone call simulation; Talkvalitetsanalys; 3SQM; PESQ; Ozeki; SIPSorcery; telefonsamtalssimulation;

   Sammanfattning : This degree project was made in collaboration with Nordicstation. The project task was to develop a testing application for a self-developed telephone survey service, which uses third party software. This third party software showed to be unreliable at higher loads. LÄS MER

3. 2. MOBILE PHONE ACOUSTICS : PERFORMANCE EVALUATION OF SPECTRAL SUBTRACTION AND ELKO’S ALGORITHM USING SPEECH QUALITY METRICS

   Master-uppsats, Blekinge Tekniska Högskola/Sektionen för ingenjörsvetenskap

   Författare :Sai Kiran Chittajallu; [2013]
   Nyckelord :Acoustics; PESQ; ELKOS; Spectral Subtraction; WOLA; Reverberation;

   Sammanfattning : In recent years a great deal of effort has been expended to develop methods that determine the quality of speech through the use of comparative algorithms. These methods are designed to calculate an index value of quality that correlates to a mean opinion score given by human subjects in evaluation sessions. LÄS MER

4. 3. Measuring Speech Quality of Laptop Microphone System using PESQ

   Master-uppsats, Blekinge Tekniska Högskola/Sektionen för ingenjörsvetenskap

   Författare :Praveen Lingapuram; [2012]
   Nyckelord :PESQ; wiener beamformer; spectral subtraction;

   Sammanfattning : Signal compression algorithms are required in speech processing system to support the limited bandwidth requirements. And while compressing the signal, speech quality must not be degraded and modern speech methods makes use of perceptual information present in the signal to distinguish which part of the signal needs to be sent and which needs to be discarded. LÄS MER

5. 4. Mobile application for speech quality measurement

   Kandidat-uppsats, Interaktiva och kognitiva system; Tekniska högskolan

   Författare :Karl Andin; Andreas Ahl; [2012]
   Nyckelord :GSM; Speech Quality; PESQ; smartphone; Android; test;

   Sammanfattning : This report describes a bachelor thesis in computer science performed at the system department within the product development unit for GSM (Global System for Mobile communication) at Ericsson in Linköping.GSM can be considered a mature technology but it is still updated with new features on a regular basis. LÄS MER

7. 5. Speech Intelligibility Measurement on the basis of ITU-T Recommendation P.863

   Master-uppsats, Laboratoriet för intelligenta system

   Författare :SWATANTRA GHIMIRE; [2012]
   Nyckelord :Speech Intelligibility; POLQA;

   Sammanfattning : Objective speech intelligibility measurement techniques like AI (Articulation Index) and AI based STI (Speech Transmission Index) fail to assess speech intelligibility in modern telecommunication networks that use several non-linear processing for enhancing speech. Moreover, these techniques do not allow prediction of single individual CVC (Consonant Vowel Consonant) word intelligibility scores. LÄS MER