In this paper, we describe the modification of a portable hand-held computer, the Museum Exhibit Guide (MEG), in order to increase its accessibility to people with physical, visual, hearing, and cognitive disabilities. A new switch-input interface is described and the corresponding changes necessary in the MEG’s hardware, software driver, and application software. Additional stereo audio amplif...

In this study, we identified and characterized the hydrographic attributes related to the success of recruitment of migratory fishes in the Upper Paraná River floodplain. To achieve our objectives, we analyzed inter-annual variations in the abundance of young-of-the-year (YOY; index of recruitment) of six migratory species and their relations with hydrographic attributes. Recruitment was relate...

The growing amount of digital music available at desktop computers and portable media players increases the need for interfaces that facilitate efficient music navigation. Search patterns are quantified and evaluated across types of feedback and input controllers in an experiment with 12 participants. The way music is searched and the subjective factors varied significantly across input device ...

Co-analysed audio and visual features can provide original concatenative synthesis effects in either or both modalities. This paper describes experiments in establishing audiovisual databases tagged by both audio and visual features, then creating new output streams by feature matching with a given input sequence; some intriguing effects are possible. Results are grounded in vectors of framewis...

This paper presents a new approach to the visualization of monophonic audio files that simultaneously illustrates general audio properties and the component sounds that comprise a given input file. This approach represents sound clip sequences using archetypal images which are subjected to image processing filters driven by audio characteristics such as power, pitch and signalto-noise ratio. Wh...

The increase in real-time applications such as Voice over IP, audio and video streaming in the public Internet has warranted QoS based routing. But today’s Internet largely supports best effort traffic. Thus, a QoS routing in the best effort environment is required to support real-time applications. Flooding of some QoS attributes (e.g. available bandwidth) have been used for QoS routing. But w...

This paper presents a methodology for extracting meaningful audio/visual features from video streams. We propose a statistical method that does not distinguish between the auditory and visual data, but one that operates on a fused data set. By doing so we discover audio/visual features that correspond to events depicted in the stream. Using these features, we can obtain a segmentation of the in...