A sound field reproduction method is proposed that uses blind source separation and a head-related transfer function. In the proposed system, multichannel acoustic signals captured at distant microphones are decomposed to a set of location/signal pairs of virtual sound sources based on frequency-domain independent component analysis. After estimating the locations and the signals of the virtual...

Telemedicine creates virtual medical collaborative environments. We propose here a novel concept of virtual medical devices (VMD) for telemedical applications. VMDs provide different views on biomedical recordings and efficient signal analysis. In this paper we present a telemedical EEG analysis environment based on virtual reality technologies. The same EEG signal/recording could be viewed eit...

We introduce physically motivated interfaces for playing virtual musical instruments, and we suggest that they lie somewhere in between commonplace interfaces and haptic interfaces in terms of their complexity. Next, we review guitarlike interfaces, and we design an interface to a virtual string. The excitation signal and pitch are sensed separately using two independent string segments. These ...

This manuscript addresses the design and implementation of a portable PC-based ECG device. Three electrodes are often employed for recording, with two them being connected to patient's chest via amplifiers' differential inputs. Therefore, every stage takes into account factors like low cost, power consumption, portability, simplicity usage. In this system, ATMEL Company's ATMEGA 328 low-power m...