This paper proposes a spectro-temporal analysis based on a bank of cochlea filters in combinaison with a nonlinear operator for amplitude modulation enhancement in the medium and high frequency formants. The output of the spectrotemporal analysis is represented as a 3D image where it is possible to observe very short-term speech transitions and formant modulations. With such analysis, it is pos...

The need for efficient, sophisticated features for speech event detection is inherent in state of the art processing, enhancement and recognition systems. We explore ideas and techniques from non-linear speech modeling and analysis, like modulations and multiband filtering and propose new energy and spectral content features derived through filtering in multiple frequency bands and tracking dom...

In the motor current signal, characteristic frequency of broken rotor bar (BRB) fault is modulated by supply and it decreases with decrease load, resulting to be easily buried under light load conditions. Teager-Kaiser energy operator (TKEO) has shown better performance detect BRB faults than classical methods, such as envelope analysis spectral analysis. However, original definition TKEO leads...

The need for efficient, sophisticated features for speech event detection is inherent in state of the art processing, enhancement and recognition systems. We explore ideas and techniques from non-linear speech modeling and analysis, like modulations and multiband filtering and propose new energy and spectral content features derived through filtering in multiple frequency bands and tracking dom...

Objective of this paper is to analyze noise free ECG signal and to discriminate the arrhythmia data from normal sinus rhythm data. ECG data is characterized by its nonlinear dynamic behavior, which shows significant changes between normal and arrhythmia data. Presence of artifacts like 60Hz power line interference (PLI), low frequency base line wander noise (2Hz) and muscle artifacts will not a...

Speakers with a defective velopharyngeal mechanism produce speech with inappropriate nasal resonance. It is of clinical interest to detect hypernasality as it is indicative of an anatomical, neurological, or peripheral nervous system problem. While clinical techniques exist for detecting hypernasality, a preferred approach would be noninvasive to maximize patient comfort and naturalness of spea...