About
36
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Introduction
Dennis Guse conducted his research in the domain of Perceptual Psychology as well as Human Computer Interaction (HCI).
In his dissertation, he investigated the formation process of perceived quality in the context of telecommunication services considering repeated use over time-periods up to several days.
In addition, he conducted practical research by implementing a fully functional 3D-Audio telephone conference system, a questionnaire tool, and a degradation simulator for speech telephony.
Additional affiliations
October 2011 - December 2016
Education
October 2011 - September 2016
October 2008 - September 2011
April 2005 - March 2008
University of Applied Science (FHTW)
Field of study
- Business Computing
Publications
Publications (36)
Mobile devices offer their users lots of possibilities and a feeling of freedom. However, this freedom comes along with new security threats. Sensitive data might be stolen and abused, if an unauthorized person gets unrestricted access to such devices. Therefore, user authentication mechanisms are required. So far authentication mechanisms like PIN...
Rotating 3D objects is a difficult task on mobile devices, be-cause the task requires 3 degrees of freedom and (multi-)touch input only allows for an indirect mapping. We propose a novel style of mobile interaction based on mid-air gestures in proximity of the device to increase the number of DOFs and alleviate the limitations of touch interaction...
In this paper, we present our implementation of a telephone conferencing system that renders a spatial representation via binaural synthesis. The implementation extends the open-source software Asterisk and complies with established Voice-over-IP standards. The implementation only requires clients to be capable of receiving and reproducing the rend...
Telecommunication services have to cope with degradations resulting from the necessary transmission of data. A telecommunication service might thus not always be able to provide the same performance to a user. The resulting variation in perceived quality might affect the user’s satisfaction, attitude, behavior, and also future-use intention towards...
Quality of Experience (QoE) typically involves conducting experiments in which stimuli are presented to participants and their judgments as well as behavioral data are collected. Nowadays, many experiments require software for the presentation of stimuli and the data collection from participants. While different software solutions exist, these are...
Due to the COVID-19 pandemic, the organizing committee of the 2020 edition of the Passive and Active Measurement (PAM) conference decided to organize it as a virtual event. Unfortunately, little is known about designing and organizing virtual academic conferences in the networking domain and their impacts on the participants' experience. In this ed...
Quality of Experience is traditionally evaluated by using short stimuli usually representing parts or single usage episodes. This opens the question on how the overall service perception involving multiple usage episodes can be evaluated-a question of high practical relevance to service operators. Despite initial research on this challenging aspect...
Quality of Experience is traditionally evaluated by using short stimuli usually representing parts or single usage episodes. This opens the question on how the overall service perception involving multiple usage episodes can be evaluated - a question of high practical relevance to service operators. Despite initial research on this challenging aspe...
Quality of Experience (QoE) typically involves conducting experiments in which stimuli are presented to participants and their judgments as well as behavioral data are collected. Nowadays, many experiments require software for the presentation of stimuli and the data collection from participants. While different software solutions exist, these are...
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. Repeated-use of a service is actually common for telecommunication...
Speech telecommunication services are traditionally used for communication between two interlocutors interacting in a conversation. Thus, the quality of transmitted speech in a conversational situation, as perceived by the end-users, is the important indicator for service providers to evaluate their systems. In this context, it is not enough to onl...
For participants of multi-party teleconferences, it can be challenging to attribute what was said to the individual talkers. Spatial audio reproduction may help to overcome this issue. Our work investigates the potential improvement for speaker recognition using binaural synthesis. Here, the individual talkers are distributed to different simulated...
Assessing the impact of network delay on gaming quality has been subject to many studies involving different genres ranging from fast-paced first-person shooters to strategy games. This paper assesses the impact of network latency on the Quality of Experience (QoE) of casual gamers playing Minecraft. It is based on a user study involving 12 casual...
In this paper, the occurrence of duration neglect for multi-episodic perceived quality is investigated. Such an effect has been observed for retrospective judgments of individual experiences, showing that the actual duration of exceptional parts of an experience are not reflected in retrospective judgments. Duration neglect has, so far, only receiv...
Technical Causes Analysis (P.TCA) is a method for identifying technical causes of sub-optimum speech transmission quality. Originally created as an expert procedure for the annotation of speech samples, its applicability to naive listener was also studied. Due to the low agreement of naive listener annotations, it was suggested that detailed traini...
In this paper, we present and validate a freely available MATLAB Toolbox for imposing speech signal impairments similar to those occurring in real-world telecommunication systems. The purpose of the toolbox is to facilitate research on the perception of different dimensions of speech quality and their relation to technical system properties. In tha...
Gaze tracking is a common technique to study user interaction but is also increasingly used as input modality. In this regard, computer vision based systems provide a promising low-cost realization of gaze tracking on mobile devices. This paper complements related work focusing on algorithmic designs by conducting two users studies aiming to i) ind...
Webpage loading delays impact the quality perception, may cause frustration as well as annoyance, and can impact the users' behavior. In addition, the quality perception can be further degraded by failures to load webpage components or, in the worst case, the failure to load the entire webpage. This impact depends on the actual implementation of th...
In this contribution the properties of quality ratings as obtained on a continuous and extended scale are investigated and a functional relation to the ITU-T P.800 Absolute Category Rating (ACR) scale is derived. Therefore, two auditory experiments were conducted in which nar-rowband and wideband conditions were rated on both the extended continuou...
The G.191: Software tools for speech and audio coding standardization (03/10) cannot be compiled on Unix-like systems using the provided build scripts. In this contribution, issues are listed and solutions proposed to overcome this limitation and make the tools available on Unix-like systems.
The quality of transmitted speech is the major indicator for telecommunication providers to classify their services. As a result, the assessment of quality is of high scientific and economic importance, and corresponding methods for assessing the quality of transmitted speech have been in the focus of multiple studies in the past. In this contribut...
Most studies on the perceptual quality evaluation of multi-media services are limited to short media samples or episodes , although typical usage of services occurs in a more regular way over longer periods of exposure (weeks, months or years). So far, it is unclear how the experience of individual episodic use is integrated to form an experience o...
Real-world usage of web browsing differs considerably from typically employed laboratory tests on single or multiple page views. Especially when using mobile devices such as smart-phones or tablets, several sources of distraction are prevalent while browsing. In the mobile scenario, users are exposed to distracting factors like other people, traffi...
Most research on Quality of Experience treats QoE as a static event. As a result, QoE is measured for stimuli of delimited length, and the QoE which is associated with the stimulus is considered to be stable along its duration. However, this rarely happens in reality where usage episodes extend over several seconds and minutes (e.g. a phone call),...
For IP-based multimedia service providers perceived Quality of Experience (QoE) is an important factor as it influences user satisfaction, which in turn affects future usage behavior. We propose to complement the current state-of-the-art approach to QoE from short-term, i.e. one interaction up to some minutes, to cover multiple interactions over lo...
In this paper a user authentication mechanism for handheld mobile de-vices using hand gestures is presented. To authenticate a prior chosen hand gesture needs to be repeated. The mobile device uses a 3D-accelerometer and a 3D-gyroscope to measure the resulting device movement. With a user study it was shown, that the presented approach is feasible...
In this paper we present a gesture-based user authentication mechanism for handheld mobile devices. For authentication the user does not enter a password or PIN, but rather moves the device in an individual specific manner. The mobile device measures the movements using a built-in 3D-accelerometer and a 3D-gyroscope. Movement-based biometric featur...