The aim of this research is to discover the bond of entropy and the experience of video game imme... more The aim of this research is to discover the bond of entropy and the experience of video game immersion, using an Interpretative Phenomenological Analysis (IPA) to interpret the immersive experiences of players and how this bond of entropy and immersion could be transferred on other immersive technologies. The experiment was conducted on a selection of low-entropy scenes in three video games belonging to the genre of interactive drama. Six players were selected as the sample group for this research, based on their playthrough experiences of the games Heavy Rain (2010), Until Dawn (2015) and Dark Pictures Anthology: Man of Medan (2019) on the PlayStation platform. By monitoring the levels of entropy and immersion during their playthroughs, this research explores the potential of transferring immersion through the use of entropy from digital games to other immersive technologies. According to the research highlights and through data interpretation, entropy is found to be immensely infl...
ICECS'99. Proceedings of ICECS '99. 6th IEEE International Conference on Electronics, Circuits and Systems (Cat. No.99EX357)
ABSTRACT A PCM to PWM converter is presented, based on a novel distortion compensating method whi... more ABSTRACT A PCM to PWM converter is presented, based on a novel distortion compensating method which requires no oversampling to be applied in the digital PWM time domain and achieves high-fidelity audio performance at clock rates less than 90 Mbit/sec. The analysis of the performance of this converter is estimated using objective measurements (e.g., amplitude of the harmonics, THD÷noise) for sinewave modulating signals and auralisation tests of typical audio material
This paper discusses the technology and commercialization challenges of a research initiative int... more This paper discusses the technology and commercialization challenges of a research initiative intended to establish a wireless metropolitan network for the city of Corfu. Key wireless mesh networking issues are discussed and value for the potential service providers and users of the network is specified. The network development builds on advanced features of wireless mesh networks, like multi-channel and multi-radio
Using a novel PCM to PWM analytic mapper, the effects of input signal parameters on the PWM-gener... more Using a novel PCM to PWM analytic mapper, the effects of input signal parameters on the PWM-generated distortions are studied and their audibility is assessed using perceptual criteria (NMR and PAQM). A wide range of input signal parameters is studied (e.g. oversampling 2<R<64, quantisation N=4, 8, 16 and 24) and the tests cover both tone-like and typical audio input signals.
Risk prevention of historical buildings through sensor network monitoring represents a challengin... more Risk prevention of historical buildings through sensor network monitoring represents a challenging and together promising task towards an optimized buildings’ protection plan. Due to the significant character that historical buildings have within the history and identity of local and consequently national communities, the monitoring approach above is nowadays considered a fundamental component of cultural preservation. Modern trends on sensor networks nowadays allow the installation of wireless monitoring equipment, able to collect a large volume and variety of data that can be further processed in order to support prevention modelling techniques and strategies. Despite the valuable post-processing outcome of the above modelling techniques, in several real-time monitoring cases, an aspect that may significant impact the data analysis accuracy from the monitoring engineer is to create an audiovisual representation of the gathered data that are easily perceived and directly associated...
ACM International Conference Proceeding Series, 2011
Abstract The development of audio-only computer games imposes a number of challenges for the soun... more Abstract The development of audio-only computer games imposes a number of challenges for the sound designer, as well as for the human machine interface design approach. Modern sonification methods can be used for effective data and game-environment or conditions representation through sound, including earcons and auditory icons. In this work we take advantage of earcons fundamental characteristics, such as spatialization usually employed for concurrent/parallel reproduction, in order to implement a tic-tac-toe audio ...
In order to promote a more dynamic and flexible communication between the learner and the system,... more In order to promote a more dynamic and flexible communication between the learner and the system, we present a structure of a new innovative and interactive e-learning system which implements emotion and level of cognition recognition. The system has as inputs ...
Despite decades of research on the dark side of the web and more than a decade of inquiry specifi... more Despite decades of research on the dark side of the web and more than a decade of inquiry specifically on the phenomenon of cyberstalking, researchers have yet to find a theoretical scheme that can sufficiently account for this type of online victimization. The paper at hand reports on an ...
IADIS International Conference Wireless Applications and Computing, 2008
This paper discusses the technology and commercialization challenges of a research initiative int... more This paper discusses the technology and commercialization challenges of a research initiative intended to establish a wireless metropolitan network for the city of Corfu. Key wireless mesh networking issues are discussed and value for the potential service providers and users of the network is specified. The network development builds on advanced features of wireless mesh networks, like multi-channel and multi-radio operation, connectivity to a fixed network infrastructure through multiple links and general purpose ...
Proceedings of the 5th International Conference on Communication Systems, Networks and Digital Signal Processing (CSNDSP’06), July
In this paper, a simulation tool is presented, suitable for evaluating the performance of the 802... more In this paper, a simulation tool is presented, suitable for evaluating the performance of the 802.11e contention-based access. 802.11e is a very recent amendment to the IEEE 802.11 standard, describing the MAC layer enhancements required for Quality of Service (QoS) provision. Aim of the developed simulator is to provide an accurate and efficient tool for evaluating significant parameters of the 802.11e protocol, mainly in terms of traffic differentiation for QoS support. To evaluate the accuracy and demonstrate the use of the simulation tool, a number of simulations are performed, following the basic 802.11e interoperability test procedures.
Broadband Wireless and WiMax IEC Comprehensive Report, ISBN, 2005
The rapid growth of the wireless multimedia market has render Quality of Service (QoS) an emergin... more The rapid growth of the wireless multimedia market has render Quality of Service (QoS) an emerging need for real-time, bandwidth demanding wireless information flow. Towards that aim, the upcoming IEEE 802.11e standard defines two novel channel access mechanisms as QoS enhancements on the legacy 802.11 protocol: one for distributed, prioritized and the other for controlled channel access. In this work, the overall QoS performance of both 802.11e channel access functions is evaluated for high-rate, real-time streaming applications and their true QoS capabilities are explored and compared under typical networking conditions by means of simulations.
In this work, a professional audio mastering / mixing software platform is presented which employ... more In this work, a professional audio mastering / mixing software platform is presented which employs state- of-the-art binaural technology algorithms for efficient and accurate sound source positioning. The proposed mixing platform supports high-quality audio (typically 96kHz/24bit) for an arbitrary number of sound sources, while room acoustic analysis and simulation models are also incorporated. All binaural calculations and audio signal processing/mixing are performed in real-time, due to the employment of an optimized binaural 3D Audio Engine developed by the authors. Moreover, all user operations are performed through a user-friendly graphical interface allowing the efficient control of a large number of binaural mixing parameters. It is shown that the proposed mixing platform achieves subjectively high spatial impression, rendering it suitable for high-quality professional audio applications.
Citizen Science aims to engage people in research activities on important issues related to their... more Citizen Science aims to engage people in research activities on important issues related to their well-being. Smart Cities aim to provide them with services that improve the quality of their life. Both concepts have seen significant growth in the last years, and can be further enhanced by combining their purposes with IoT technologies that allow for dynamic and large-scale communication and interaction. However, exciting and retaining the interest of participants is a key factor for such initiatives. In this paper we suggest that engagement in Citizen Science projects applied on Smart Cities infrastructure can be enhanced through contextual and structural game elements realized through augmented audio interactive mechanisms. Our inter-disciplinary framework is described through the paradigm of a collaborative bird call recognition game, in which users collect and submit audio data, which are then classified and used for augmenting physical space with virtual soundscape maps. We disc...
At the core of augmented reality audio (ARA) technology lies the ARA mix, a process responsible f... more At the core of augmented reality audio (ARA) technology lies the ARA mix, a process responsible for the assignment of a virtual environment to a real one. Legacy ARA mix models have focused on the natural reproduction of the real environment, whereas the virtual environment is simply mixed through fixed gain methods. This study presents a novel approach of a dynamic ARA mix that facilitates a smooth adaptation of the virtual environment to the real one, as well as dynamic control of the virtual audio engine, by taking into account the inherent characteristics of both ARA technology and binaural auditory perception. A prototype feature extraction technique of auditory perception characteristics through a real-time binaural loudness prediction method was used to upgrade the legacy ARA mix model into a dynamic model, which was evaluated through benchmarks and subjective tests and showed encouraging results in terms of functionality and acceptance.
The aim of this research is to discover the bond of entropy and the experience of video game imme... more The aim of this research is to discover the bond of entropy and the experience of video game immersion, using an Interpretative Phenomenological Analysis (IPA) to interpret the immersive experiences of players and how this bond of entropy and immersion could be transferred on other immersive technologies. The experiment was conducted on a selection of low-entropy scenes in three video games belonging to the genre of interactive drama. Six players were selected as the sample group for this research, based on their playthrough experiences of the games Heavy Rain (2010), Until Dawn (2015) and Dark Pictures Anthology: Man of Medan (2019) on the PlayStation platform. By monitoring the levels of entropy and immersion during their playthroughs, this research explores the potential of transferring immersion through the use of entropy from digital games to other immersive technologies. According to the research highlights and through data interpretation, entropy is found to be immensely infl...
ICECS'99. Proceedings of ICECS '99. 6th IEEE International Conference on Electronics, Circuits and Systems (Cat. No.99EX357)
ABSTRACT A PCM to PWM converter is presented, based on a novel distortion compensating method whi... more ABSTRACT A PCM to PWM converter is presented, based on a novel distortion compensating method which requires no oversampling to be applied in the digital PWM time domain and achieves high-fidelity audio performance at clock rates less than 90 Mbit/sec. The analysis of the performance of this converter is estimated using objective measurements (e.g., amplitude of the harmonics, THD÷noise) for sinewave modulating signals and auralisation tests of typical audio material
This paper discusses the technology and commercialization challenges of a research initiative int... more This paper discusses the technology and commercialization challenges of a research initiative intended to establish a wireless metropolitan network for the city of Corfu. Key wireless mesh networking issues are discussed and value for the potential service providers and users of the network is specified. The network development builds on advanced features of wireless mesh networks, like multi-channel and multi-radio
Using a novel PCM to PWM analytic mapper, the effects of input signal parameters on the PWM-gener... more Using a novel PCM to PWM analytic mapper, the effects of input signal parameters on the PWM-generated distortions are studied and their audibility is assessed using perceptual criteria (NMR and PAQM). A wide range of input signal parameters is studied (e.g. oversampling 2<R<64, quantisation N=4, 8, 16 and 24) and the tests cover both tone-like and typical audio input signals.
Risk prevention of historical buildings through sensor network monitoring represents a challengin... more Risk prevention of historical buildings through sensor network monitoring represents a challenging and together promising task towards an optimized buildings’ protection plan. Due to the significant character that historical buildings have within the history and identity of local and consequently national communities, the monitoring approach above is nowadays considered a fundamental component of cultural preservation. Modern trends on sensor networks nowadays allow the installation of wireless monitoring equipment, able to collect a large volume and variety of data that can be further processed in order to support prevention modelling techniques and strategies. Despite the valuable post-processing outcome of the above modelling techniques, in several real-time monitoring cases, an aspect that may significant impact the data analysis accuracy from the monitoring engineer is to create an audiovisual representation of the gathered data that are easily perceived and directly associated...
ACM International Conference Proceeding Series, 2011
Abstract The development of audio-only computer games imposes a number of challenges for the soun... more Abstract The development of audio-only computer games imposes a number of challenges for the sound designer, as well as for the human machine interface design approach. Modern sonification methods can be used for effective data and game-environment or conditions representation through sound, including earcons and auditory icons. In this work we take advantage of earcons fundamental characteristics, such as spatialization usually employed for concurrent/parallel reproduction, in order to implement a tic-tac-toe audio ...
In order to promote a more dynamic and flexible communication between the learner and the system,... more In order to promote a more dynamic and flexible communication between the learner and the system, we present a structure of a new innovative and interactive e-learning system which implements emotion and level of cognition recognition. The system has as inputs ...
Despite decades of research on the dark side of the web and more than a decade of inquiry specifi... more Despite decades of research on the dark side of the web and more than a decade of inquiry specifically on the phenomenon of cyberstalking, researchers have yet to find a theoretical scheme that can sufficiently account for this type of online victimization. The paper at hand reports on an ...
IADIS International Conference Wireless Applications and Computing, 2008
This paper discusses the technology and commercialization challenges of a research initiative int... more This paper discusses the technology and commercialization challenges of a research initiative intended to establish a wireless metropolitan network for the city of Corfu. Key wireless mesh networking issues are discussed and value for the potential service providers and users of the network is specified. The network development builds on advanced features of wireless mesh networks, like multi-channel and multi-radio operation, connectivity to a fixed network infrastructure through multiple links and general purpose ...
Proceedings of the 5th International Conference on Communication Systems, Networks and Digital Signal Processing (CSNDSP’06), July
In this paper, a simulation tool is presented, suitable for evaluating the performance of the 802... more In this paper, a simulation tool is presented, suitable for evaluating the performance of the 802.11e contention-based access. 802.11e is a very recent amendment to the IEEE 802.11 standard, describing the MAC layer enhancements required for Quality of Service (QoS) provision. Aim of the developed simulator is to provide an accurate and efficient tool for evaluating significant parameters of the 802.11e protocol, mainly in terms of traffic differentiation for QoS support. To evaluate the accuracy and demonstrate the use of the simulation tool, a number of simulations are performed, following the basic 802.11e interoperability test procedures.
Broadband Wireless and WiMax IEC Comprehensive Report, ISBN, 2005
The rapid growth of the wireless multimedia market has render Quality of Service (QoS) an emergin... more The rapid growth of the wireless multimedia market has render Quality of Service (QoS) an emerging need for real-time, bandwidth demanding wireless information flow. Towards that aim, the upcoming IEEE 802.11e standard defines two novel channel access mechanisms as QoS enhancements on the legacy 802.11 protocol: one for distributed, prioritized and the other for controlled channel access. In this work, the overall QoS performance of both 802.11e channel access functions is evaluated for high-rate, real-time streaming applications and their true QoS capabilities are explored and compared under typical networking conditions by means of simulations.
In this work, a professional audio mastering / mixing software platform is presented which employ... more In this work, a professional audio mastering / mixing software platform is presented which employs state- of-the-art binaural technology algorithms for efficient and accurate sound source positioning. The proposed mixing platform supports high-quality audio (typically 96kHz/24bit) for an arbitrary number of sound sources, while room acoustic analysis and simulation models are also incorporated. All binaural calculations and audio signal processing/mixing are performed in real-time, due to the employment of an optimized binaural 3D Audio Engine developed by the authors. Moreover, all user operations are performed through a user-friendly graphical interface allowing the efficient control of a large number of binaural mixing parameters. It is shown that the proposed mixing platform achieves subjectively high spatial impression, rendering it suitable for high-quality professional audio applications.
Citizen Science aims to engage people in research activities on important issues related to their... more Citizen Science aims to engage people in research activities on important issues related to their well-being. Smart Cities aim to provide them with services that improve the quality of their life. Both concepts have seen significant growth in the last years, and can be further enhanced by combining their purposes with IoT technologies that allow for dynamic and large-scale communication and interaction. However, exciting and retaining the interest of participants is a key factor for such initiatives. In this paper we suggest that engagement in Citizen Science projects applied on Smart Cities infrastructure can be enhanced through contextual and structural game elements realized through augmented audio interactive mechanisms. Our inter-disciplinary framework is described through the paradigm of a collaborative bird call recognition game, in which users collect and submit audio data, which are then classified and used for augmenting physical space with virtual soundscape maps. We disc...
At the core of augmented reality audio (ARA) technology lies the ARA mix, a process responsible f... more At the core of augmented reality audio (ARA) technology lies the ARA mix, a process responsible for the assignment of a virtual environment to a real one. Legacy ARA mix models have focused on the natural reproduction of the real environment, whereas the virtual environment is simply mixed through fixed gain methods. This study presents a novel approach of a dynamic ARA mix that facilitates a smooth adaptation of the virtual environment to the real one, as well as dynamic control of the virtual audio engine, by taking into account the inherent characteristics of both ARA technology and binaural auditory perception. A prototype feature extraction technique of auditory perception characteristics through a real-time binaural loudness prediction method was used to upgrade the legacy ARA mix model into a dynamic model, which was evaluated through benchmarks and subjective tests and showed encouraging results in terms of functionality and acceptance.
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