
Christos TsakostasMagic Audio LLC · Research
Christos Tsakostas
Master of Engineering
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12
Publications
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Introduction
Publications
Publications (12)
In a standard arrangement with one lead and one lag loudspeaker in anechoic space, simulated by a virtual auditory environment, a measurement of the echo threshold took place for each one of a pair of auditory streams. A second measurement of the echo threshold of each stream followed, but this time the two streams were presented to the listeners s...
Increasingly more users around the globe use the web browser on a daily basis, in mobile and desktop devices. Recent advances in web technologies allow playback and real-time streaming of audiovisual content within the browser and, in parallel, they allow advanced sound manipulation with the Web Audio API. The work presented here explores the possi...
Having as an objective to support students in coll aborating/communicating fruitfully with respect to the underlying collabora tive learning setting, we developed ACT, a synchronous communication tool which supports mechanisms for students' self-regulation as well as for the adaptation and personalization of t he communication. The self-regulation...
Having as an objective to support students in collaborating/communicating fruitfully with respect to the underlying collaborative learning setting, we developed ACT, a synchronous communication tool which supports mechanisms for students' self-regulation as well as for the adaptation and personalization of the communication. The selfregulation mech...
Despite the recent advantages on multichannel audio coding and playback technologies, 3D audio positioning is frequently required to be performed over legacy stereo loudspeaker setups, due to certain application limitations and restrictions mainly presented in portable and low cost systems. In this work, a 3D audio platform is introduced which allo...
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 analysi...
The simulation of moving sound sources represents a fundamental issue for efficiently representing virtual worlds and acoustic environments but it is limited by the Head Related Transfer Function resolution measurement, usually overcome by interpolation techniques. In this work, a novel time-varying binaural convolution / filtering algorithm is pre...
Multimedia standards, frameworks and models are already well established for generalized presentations. However, the situation is much less advanced for systems, which require the combination of advanced sound-oriented features and capabilities similar to those used to interact with highly demanding visual content. In this respect, current commerci...
In this paper, we present the feedback process of a web-enabled concept mapping learning environment, referred to as COMPASS. Different forms of feedback (text-, graphical-and dialogue-based) are supported and multiple Informative, Tutoring and Reflective Feedback Components (ITRFC) are available, in terms of delivering individualized feedback. The...
Recent developments related to immersive audio systems are mainly originating from binaural audio processing technology. In this work, a novel high-quality binaural modeling engine is presented suitable for supporting a wide range of applications in the area of virtual reality, mobile playback and computer games. Based on a set of optimized algorit...