• The widely-tunable harmonic mode-locked fiber laser with a fixed repetition rate. Pulse width is tunable by exploiting the combination of spectral filtering and gain management. broadband CNT SA TF play an important role in pulse tunability. Controlled flexible ultrafast pulses are great importance many application fields, such as metrology. Here, we report compact passively effect achieved a...

In this paper, new LC lumped components and composite lines are used to create a filtering branch line coupler (FBLC) with small size wide suppression band. New proposed using applied components, which as the main branches. The FBLC suppresses second sixth harmonics high attention level provides stopband from 1.6 GHz 5 more than 20 dB of attention. presented is analyzed, designed, simulated, im...

A new adaptive Packet algorithm based on Discrete Cosine harmonic wavelet transform (DCHWT), (DCAHWP) has been proposed. This is realized by the Discrete Cosine Harmonic Wavelet transform (DCHTWT) which exploits the good properties of DCT viz., energy compaction (low leakage), frequency resolution and computational simplicity due its real nature, compared to those of DFT and its harmonic wavele...

Controlling the wavefront of an extreme ultraviolet (XUV) high-order harmonic beam during generation process offers capability modifying properties without resorting to any XUV optics. By characterizing intensity profile and wavefront, we quantitatively retrieve both size position waist each generated in argon jet. We show that optics-free focusing can occur under specific generating conditions...

Speech Emotion Recognition (SER) is a new and challenging research area with a wide range of applications in man-machine interactions. The aim of a SER system is to recognize human emotion by analyzing the acoustics of speech sound. In this study, we propose Spectral Pattern features (SPs) and Harmonic Energy features (HEs) for emotion recognition. These features extracted from the spectrogram ...

Abstract—We present an integrated analog processor for real-time wavelet decomposition and reconstruction of continuous temporal signals covering the audio frequency range. The processor performs complex harmonic modulation and Gaussian lowpass filtering in 16 parallel, identical channels, each channel clocked at a different rate, to produce a multiresolution mapping on a logarithmic frequency ...

We propose a new class of non-linear image recovery operators based on local smoothing applied both in the spatial domain (horizontal smoothing) and in the gray-level domain (vertical smoothing). The commonly used horizontal smoothing gives the way of reducing the noise level (noise filtering), whereas the vertical smoothing yields the edge preservation property. The method is indexed by a real...

Due to their low number of biased components, algorithmic A/D converters are often used in low power implementations. This paper describes an algorithm developed at the Institute of Microtechnology (IMT) which allows extending performances of cyclic RSD converters, without greatly impairing its benefits (reduced silicon area, low consumption). To achieve a Total Harmonic Distortion + Noise (THD...

This study deduces a general inversion of continuous wavelet transform (CWT) with timescale being real rather than positive. In conventional CWT inversion, wavelet’s dual is assumed to be a reconstruction wavelet or a localized function. This study finds that wavelet’s dual can be a harmonic which is not local. This finding leads to new CWT inversion formulas. It also justifies the concept of n...