Snow crystals consist of many different types of ice particles. Typical radar measurements observe only bulk properties of all types of ice particles present in a radar volume. Due to their difference in radar cross-section, larger particles will reflect more power of the transmitted radar signal, than small particles. If small and large particles are present in the same radar volume with compa...

Using a wah-wah pedal guitar is something guitar players have to learn. Recently, more intuitive ways to control such effect have been proposed. In this direction, the Wahwactor system controls a wah-wah transformation in real-time using the guitar player's voice, more precisely, using the performer [wa-wa] utterances. To come up with this system, different vocal features derived from spectral ...

Abstract Steganography is the art and science of writing hidden messages in such a way that no one apart from the intended recipient knows of the existence of the message. In today’s world, it is widely used in order to secure the information. Since digital forensics aims to detect, recover and examine the digital evidence and steganography is a method for hiding digital evidence, detecting the...

The Nadaraya-Watson estimator of regression is known to be highly sensitive to the presence of outliers in the sample. A possible way of robusti-fication consists in using local L-estimates of regression. Whereas the local L-estimation is traditionally done using an empirical conditional distribution function, we propose to use instead a smoothed conditional distribution function. We show that ...

This study uses acoustic analysis to determine whether unstressed pretonic high vowels in Lezgi are deleted or devoiced. We argue that the vowel gesture is not deleted, but it is overlapped and consequently devoiced by the preceding [s] gesture. We use spectral analysis to test the increased gestural overlap hypothesis. Three results support this hypothesis and consequently the devoicing interp...

Testing of Analog-to-Digital Converters is classically composed of two successive and independent phases: the histogram-based test technique evaluating static specifications and the spectral analysis technique evaluating the dynamic performances. Consequently, the fundamental objective here is to investigate the feasibility of an alternative test flow involving exclusively spectral analysis to ...

The maximum entropy spectral estimator is widely used because of its high spectral resolution, but it lacks an easy procedure for evaluating the statistical significance of the spectral estimates. We implemented the non-parametric computer intensive permutation test in order to evaluate the statistical significance of the maximum entropy spectral estimates. There is the possibility of choosing ...

This paper deals with spectral representation of the glottal ow. The LF and the KLGLOTT88 models of the glottal ow are studied. In a rst part, we compute analytically the spectrum of the LF-model. Then, formulas are given for computing spectral tilt and amplitudes of the rst harmonics as functions of the LF-model parameters. In a second part we consider the spectrum of the KLGLOTT88 model. It i...