This paper presents a study on the evolution of the perceptually most important parameters of musical instrument sounds as a function of the most important playing styles, namely the pitch and intensity. The main parameter to change when varying the intensity is the spectral envelope, and this change can be modeled with a spectral deviation, which in turn is modeled by an asymptotic exponential...

The advent of modern electronic world has opened up various fronts in multimedia interaction. They are used in various fields for various purposes of education, entertainment, research and many more. This has led to storage and retrieval of multimedia content regularly. But due to limitations of current technology the disk space and the transmission bandwidth fall behind in the race with the re...

To effectively utilize the growing number of digital media sources in todays electronic world, easy to use computational flexible content-based access is a necessity. In contrast, content-based access must often be based on interpreting results from low-level computationally expensive feature extraction algorithms. We propose a new approach based on dynamic object-oriented Bayesian networks for...

We investigate the usability of Timed Model-Based Testing in a case study: Conformance of the implementation Autotrust with Automatic Trust Anchor Updating, a protocol to help securing DNS. We present models for timing aspects of the protocol. Definition of checks on quiescence in the model are proven to be possible. Latency during input application can yield false test results. We present a mo...

In this paper we shall introduce a new electronic payment concept based on the popular direct debit payment model, entitled periodical payments. The direct debit model currently in use online is neither secure nor flexible, and requires a leap of faith by the customer who must trust the merchant to behave honestly. Electronic direct debit request (DDR) forms are not signed by both parties in a ...

Currently, mobility presents itself as a major innovation in historic technological revolution. From the first decade of this century, nothing compares to what happened in the field of Information Technology (IT), which is adding to market a range of news relating to infrastructure such as mobile computing hardware, software, computer networks, etc.. From a handheld as a wireless device, iPad, ...

7. 1. Summary Vertebrates have various sex determining mechanisms. These have been broadly classified as either genotypic sex determination (GSD) or environmental sex determination (ESD). This terminology, however, may obscure the fact that mixtures between genotypic and environmental sex determination exist, or that genotypic and environmental sex determination may, in fact, be the extremes of...