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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.
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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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