The usefulness of pulse Frl.!qucncy Mudulation (PFM) in information transmission is ..:mpasizcd. Biological systems <Jlso usc Pulse Frcqu.:ncy Modulation in Lransmilling informations. An atlcmpl was made for an cx:pcrimcntal test on PFM. Some results of the experimental test show that almost distortion free information recovery, from the frequency modulated pulse train, is possible by low-pass ...

Abstract: A procedure for fast ECG amplifier recovery after defibrillation shocks was developed and simulated in the MATLAB environment. Exponentially decaying post-shock voltages have been recorded. Signals from the AHA database are taken and mixed with the recorded exponential disturbances. The algorithm applies moving averaging (comb filter) on the compound input signal, thereby obtaining th...

Abstract. Recently, different models of the statistical structure of natural images have been proposed. Maximizing sparseness, or alternatively temporal coherence of linear filter outputs leads to the emergence of simple cell properties. Taking account of the basic dependencies of linear filter outputs enables modelling of complex cell and topographic properties as well. In this paper, I propos...

The quality of the displayed image during minimal-invasive operations (endoscopy) may be low due to highlights and water vapor in front of the camera lens. In some cases, image processing like temporal color vector median filtering may enhance the visual quality of the images [8]. In this contribution we present a new technique of ordering, filtering and re-ordering of color image pixels that i...

When monkeys are presented simultaneously with multiple stimuli, they can make one of two types of response. Either they make averaging saccades, that land at intermediate locations between the targets, or target-directed saccades, that land close to one of the targets. The two types of saccades occur at different latencies and are thought to reflect different processes; fast reflexive averagin...

Recently, a new concept for perceptual audio coding was presented, which is based on a prefilter in the encoder and a corresponding post-filter in the decoder, both controlled by a psychoacoustic model. It enables individual selection of spectral and temporal resolutions for irrelevancy reduction and redundancy reduction. This paper addresses problems related to the efficient transmission of th...