Consider a dynamical system u 7→ x, ẋ = fnl(x, u) where fnl is a nonlinear (convex or nonconvex) function, or a combination of nonlinear functions that can eventually switch. We present, in this preliminary work, a generalization of the standard model-free control, that can either control the dynamical system, given an output reference trajectory, or optimize the dynamical system as a derivativ...

We propose a deep learning-based phase retrieval method to accurately reconstruct the optical field of single-sideband minimum-phase signal from directly detected intensity waveform. Our relies on fully convolutional Neural Network (NN) model realize non-iterative and robust retrieval. The NN is trained so that it performs full-field reconstruction jointly compensates for transmission impairmen...

A group delay-based excitation source analysis and design method is introduced for extension of TANDEM-STRAIGHT, a speech analysis, modification and synthesis system. This introduction makes all components of the system be based on interference-free representations. They are power spectrum, instantaneous frequency and group delay representations. This unification has potential to solve the majo...

A bang-bang controller is proposed which is able to ensure reference signal tracking with prespecified time-varying error bounds (the funnel) for nonlinear systems with relative degree one or two. For the design of the controller only the knowledge of the relative degree is needed. The controller is guaranteed to work when certain feasibility assumptions are fulfilled, which are explicitly give...

This paper is concerned with extracting excitation signals from recorded plucked-string sounds from an acoustic guitar. Three pre-existing methods are reviewed: the matrix pencil inverse-filtering (MPIF) method by Laroche and Meillier (1994), the sinusoids plus noise inverse-filtering (SPNIF) method by Välimäki and Tolonen (1998), and the magnitude spectrum smoothing (MSS) method by Laurenti an...

We consider the synchronization problem for a class of directed networks where the agents receive relative output information from their neighbors, but lack independent information about their own state or output (they are non-introspective) and are unable to exchange internal controller states with their neighbors. We consider three classes of networks defined by the properties of the agent dy...

Observer based controllers for loop transfer recovery of non-strictly proper systems which are left invertible and of minimum phase are considered. A complete analysis of loop transfer recovery problem using either full or reduced order observer based controller is provided. Key Words-Robust control, loop transfer recovery.

Glottal flow waveforms estimated by inverse filtering acoustic speech pressure signals were compared to glottal area functions obtained by digital high-speed imaging of the vocal fold vibration. Speech data consisted of breathy, normal and pressed phonations produced by two male and one female subjects. The results yield both qualitative and quantitative information about the relationship betwe...