We propose a novel approach to auditory stream segregation which extracts individual sounds (auditory stream) from a mixture of sounds in auditory scene analysis. The HBSS (Harmonic-Based Stream Segregation) system is designed and developed by employing a multi-agent system. HBSS uses only harmonics as a clue to segregation and extracts auditory streams incrementally. When the tracer-generator ...

AND CONCLUSION In this study various quality aspects of the CellVision, Leja, and MicroCell disposable sperm cell counting slides were investigated. The height of the chambers was determined using interferometric spectrometry. The average heights of the Leja and MicroCell were very close, respectively 20.0 μm and 20.3 μm, whereas the CellVision was lower than specification (17.9 μm). The accura...

0747-5632/$ see front matter 2008 Elsevier Lt doi:10.1016/j.chb.2008.05.003 q This project was completed as a thesis by the fi * Corresponding author. Tel.: +1 815 753 7012. E-mail address: [email protected] (D.D The Computers As Social Actors (CASA) research paradigm has examined how individuals respond to computers programmed to interact in various ways. In the current research, we exte...

Currently, agent designers and programmers must work extensively to design, describe, test and implement the communication protocols used in multi agent systems. The design of the protocols is on an imperative basis. The potential exists for the designer and programmer to play a smaller role, though. This role would simply be to input a description of required activities, or to describe it decl...

In this paper, we investigate the Casacore Table Data System (CTDS) used in the casacore and CASA libraries, and methods to parallelize it. CTDS provides a storage manager plugin mechanism for third-party developers to design and implement their own CTDS storage managers. Having this in mind, we looked into various storage backend techniques that can possibly enable parallel I/O for CTDS by imp...

Ideal Binary Masking (IdBM) is considered as the primary goal of computational auditory scene analysis. This binary masking criterion provides a time-frequency representation of noisy speech and retains regions where the speech dominates the noise while discarding regions where the noise is dominant. Several studies have shown the benefits of IdBM for normal hearing and hearing-impaired listene...

We describe a parallel solution to the problem of resolving non-ordinary singularities of a plane algebraic curve. The original sequential program is implemented in the software library CASA on top of the computer algebra system Maple. The new parallel version is based on Distributed Maple, a distributed programming extension written in Java. We evaluate the performance of the program in a clus...

We propose a CASA labelling method of the TF representation, which is based on the periodicity of the speech, related to the voicing. A local voicing index is estimated in four subbands after demodulation of the signal. This index is used as a reliability measure for both pitch identification and speech recognition. First, this model allows robust f0 identification thanks to the voicing index, ...

This report describes a short performance evaluation of a prototype of the CASA framework. The prototype consists of the CASA runtime environment and a simple application that runs on that runtime environment. All these parts have been implemented in Java. Changes in the availability of the resources can be simulated using a graphical user interface. The influence of multiple applications runni...

Computational Auditory Scene Analysis (CASA) has been the focus in recent literature for speech separation from monaural mixtures. The performance of current CASA systems on voiced speech separation strictly depends on the robustness of the algorithm used for pitch frequency estimation. We propose a new system that estimates pitch (frequency) range of a target utterance and separates voiced por...