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Author: | Sirén, Tuomo |
Title: | Test tool for measuring objective speech quality in mobile media gateway multiparty call |
Testityökalu objektiivisen äänenlaadun mittaamiseen mobile media gateway konferenssipuhelussa | |
Publication type: | Master's thesis |
Publication year: | 2011 |
Pages: | xi + 54 s. + liitt. 3 Language: eng |
Department/School: | Signaalinkäsittelyn ja akustiikan laitos |
Main subject: | Signaalinkäsittelytekniikka (S-88) |
Supervisor: | Alku, Paavo |
Instructor: | Bergenwall, Thomas |
OEVS: | Electronic archive copy is available via Aalto Thesis Database.
Instructions Reading digital theses in the closed network of the Aalto University Harald Herlin Learning CentreIn the closed network of Learning Centre you can read digital and digitized theses not available in the open network. The Learning Centre contact details and opening hours: https://learningcentre.aalto.fi/en/harald-herlin-learning-centre/ You can read theses on the Learning Centre customer computers, which are available on all floors.
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Location: | P1 Ark Aalto 1432 | Archive |
Keywords: | speech quality voice quality PESQ media gateway äänenlaatu puheenlaatu |
Abstract (eng): | This thesis describes a software test tool for narrowband codec speech quality analysis for ITU-T G.711 and GSM standardized codecs in mobile media gateway. The focus is on the PESQ algorithm that is used for objective quality measurement, before this an introductory review on mobile core network, speech perception, and speech coding and speech quality is given. The test tool is described from software architectural and functional point of view and the outcome is analysed by comparing the received objective results with reference results. |
Abstract (fin): | Tässä opinnäytetyössä rakennettiin testityökaluohjelmisto kapeakaistaisten ITU-T G.711 ja GSM standardoitujen puhekoodekkien äänenlaadun mittaamiseen mobile media gatewayssa, Pääpaino on PESQ algoritmilla, jota käytetään objektiiviseen äänenlaadun mittaamiseen, Teoriaosuudessa kerrotaan mobiiliverkon rakenteesta, äänenhavainnoinnista, äänenpakkauksesta ja äänenlaadusta, Testityökalu kuvataan ohjelmistoarkkitehtuurinäkökulmasta sekä funktionaaliselta osalta ja lopputuloksia analysoidaan vertaamalla saatuja objektiivisia tuloksia referenssituloksiin, |
ED: | 2012-01-23 |
INSSI record number: 43829
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