Voice and Speech Quality Perception

Jekosch, Ute

doi:10.1007/3-540-28860-0

Cited by 13 publications

(10 citation statements)

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“…In fact, a recency effect on multi-episodic judgments was indicated in prior work, but could not be proven conclusively (e.g., [21,31]). This hypothesis is investigated in E1 and E2.…”

Section: Hypothesesmentioning

confidence: 86%

“…It results from the person's evaluation of the fulfillment of his or her expectations and needs with respect to the utility and / or enjoyment in the light of the person's context, personality and current state'' [32]. The formation process of perceived quality is considered a continuous process integrating the continuous stream of experiences [21]. This process can be investigated in subjective experiments by presenting a set of stimuli to participants and letting them assess their perceived quality.…”

Section: Introductionmentioning

confidence: 99%

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Multi-episodic perceived quality for one session of consecutive usage episodes with a speech telephony service

et al. 2017

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The impact of varying performance and its effect on the perceived quality is an important aspect of quality of experience. Especially for service providers, it is important to understand how the perceived quality of a user, who is interacting with their services repeatedly, evolves. Repeateduse of a service is actually common for telecommunication services, such as speech telephony. For telecommunication services, it is very likely that a user encounters varying performance, for example due to varying network load conditions. For repeated-use taking place in a usage period covering several days, initial work on the formation process of the so-called multi-episodic perceived quality (i.e., distinct, meaningful interactions, denoted as usage episodes) has been conducted. In this paper, we present our work investigating the multi-episodic perceived quality for usage episodes taking place in one session (i.e., in a time frame of up to 45 min) with a speech telephony service. We investigate two aspects and their impact on the multi-episodic perceived quality: (a) increasing the number of low performance (LP) usage episodes and (b) varying the temporal position of LP usage episodes towards the assessment of multi-episodic perceived quality. Additionally, the impact of the user's behavioral freedom (i.e., two-party conversation vs. 3rd-party listening) on the two investigated aspects is examined. With regard to (a), the results show that an increasing number of LP usage episodes lead to a reduced multi-episodic perceived quality until saturation is reached. No impact of the user's behavioral freedom was found. For (b), an impact of the varied behavioral freedom was observed. Varying the temporal position had an impact on the multi-episodic perceived quality for two-party conversation. For 3rd-party-listening, this could only be observed in one out of two cases.

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“…In fact, a recency effect on multi-episodic judgments was indicated in prior work, but could not be proven conclusively (e.g., [21,31]). This hypothesis is investigated in E1 and E2.…”

Section: Hypothesesmentioning

confidence: 86%

Section: Introductionmentioning

confidence: 99%

Multi-episodic perceived quality for one session of consecutive usage episodes with a speech telephony service

et al. 2017

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“…To provide an intuitive and complete definition of the holistic concept Quality of Experience, the members of the COST Action QUALINET significantly advanced a common understanding of the above-mentioned concepts in a whitepaper [9]. Based on the work of Jekosch [38], the authors defined experience as follows:…”

Section: Quality Of Experience Researchmentioning

confidence: 99%

Section: Qualitymentioning

confidence: 99%

“…To be highlighted in this definition is that the quality judgment process, for which a slightly modified version of a well-known judgement model based on Jekosch [38] and Raake [39] is illustrated in Fig. 2.1, includes an individual's comparison of a "perceived composition of an entity with respect to its desired composition" [38]. Thereby, the perceived composition refers to the "totality of features of an entity," and the desired composition to the "totality of features of individual expectations and/or relevant demands and/or social requirements" [38].…”

Section: Qualitymentioning

confidence: 99%

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Assessing the Quality of Experience of Cloud Gaming Services

Schmidt¹

2023

T-Labs Series in Telecommunication Services

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Die Videospielebranche hat den größten Unterhaltungssektor unserer Zeit geschaffen, der schnell wächst und das Leben vieler Generationen weltweit beeinflusst. Besonders hochkomplexe Spiele erfordern jedoch, dass Spieler über leistungsstarke Hardware verfügen. So wurde in den letzten Jahren ein neues Konzept namens Cloud Gaming entwickelt, mit dem Nutzer diese Spiele, die auf einem Cloud-Server ausgeführt werden, fernsteuern können. Während der Ansatz verschiedene Vorteile mit sich bringt, stellt die zusätzliche Netzwerkverbindung und Videoverarbeitung viele neue technische Herausforderungen für Netzbetreiber und Dienstanbieter. Um diese Hindernisse zu überwinden und die Zufriedenheit ihrer Kunden zu gewährleisten, haben Unternehmen ein starkes Interesse daran, das Nutzungserleben (Quality of Experience, QoE) der Spieler zu untersuchen und vorherzusagen. Traditionelle QoE-Evaluierungen von Multimediadiensten verwenden kontrollierte subjektive Experimente, bei denen die Teilnehmer gebeten werden, ihre Meinung zu präsentierten Stimuli, z. B. einer Netzwerkbedingung, unter Verwendung validierter Fragebögen nachträglich zu äußern. Um diesen Beurteilungsprozess zu beschreiben, schlagen Möller und Kollegen (2013) eine Taxonomie der Qualitätsaspekte von Cloud-Gaming-Systemen vor. Die Anwendbarkeit etablierter Bewertungsmethoden zur Messung des hochgradig mehrdimensionalen Konstrukts der Gaming-QoE ist jedoch sehr begrenzt. Da sich das Gebiet der Gaming-QoE noch in der Anfangsphase befindet, fehlen validierte Bewertungsmethoden, die speziell für Cloud-Gaming-Dienste entwickelt wurden. Ziel der vorgestellten Forschung ist es daher, eine umfassende, zuverlässige und validierte Bewertungsmethode für die Gaming-QoE für Cloud-Gaming-Dienste zu entwickeln und zu evaluieren. Die Methode ermöglicht die Gestaltung subjektiver Tests zur Erstellung von Datensätzen für Qualitätsvorhersagemodelle und ermöglicht ein detailliertes Verständnis der Beziehungen zwischen einer Vielzahl von Qualitätsaspekten. Als erster Schritt in Richtung eines einheitlichen Evaluierungsansatzes wurden verfügbare Fragebögen auf kompakte Weise zusammengefasst. Da kein Messinstrument zur Bewertung der Interaktionsqualität identifiziert wurde, wurde ein neuer Fragebogen, die Gaming Input Quality Scale (GIPS), entwickelt. Darüber hinaus wurde für dessen Erstellung ein neues Framework zur Bewertung der Gaming-QoE mithilfe eines Crowdsourcing-Ansatzes entworfen. Zuletzt wurde die Evaluierungsmethode basierend auf einem großen Datensatz, der dominante Netzwerk-und Codierungsbedingungen umfasst, unter Verwendung der Strukturgleichungsmodellierung untersucht. Die Forschung ergab, dass das Crowdsourcing-Framework vergleichbare Ergebnisse wie Laborstudien liefern kann. Zudem wurde gezeigt, dass die entwickelte Evaluierungsmethode zuverlässige und gültige Benutzerbewertungen liefert und gleichzeitig ein Testdesign ermöglicht, das zur Entwicklung von Qualitätsvorhersagemodellen geeignet ist. Zusammenfassend sind die Hauptbeiträge der Arbeit (1) eine empirische Validieru...

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Evaluating Interactions with Spoken Dialogue Telephone Services

Möller

Recent Trends in Discourse and Dialogue

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When humans interact with spoken dialogue systems, parameters can be logged which quantify the flow of the interaction, the behavior of the user and the system, and the performance of individual system modules during the interaction. Although such parameters are not directly linked to the quality perceived by the user, they provide useful information for system development, optimization, and maintenance. This paper presents a collection of such parameters which are now considered to be recommended by the International Telecommunication Union (ITU-T) for evaluating telephone-based spoken dialogue services. As an initial evaluation, a case study is described which shows that the parameters correlate only weakly with subjective judgments, but that they still may be used for predicting quality with PARADISE-style regression models.

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Voice and Speech Quality Perception

Cited by 13 publications

References 0 publications

Multi-episodic perceived quality for one session of consecutive usage episodes with a speech telephony service

Multi-episodic perceived quality for one session of consecutive usage episodes with a speech telephony service

Assessing the Quality of Experience of Cloud Gaming Services

Evaluating Interactions with Spoken Dialogue Telephone Services

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