Federico Traverso

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For linear arrays with fixed steering and an inter-element spacing smaller than one half of the wavelength, end-fire steering of a data-independent beamformer offers better directivity than broadside steering. The introduction of a lower bound on the white noise gain ensures the necessary robustness against random array errors and sensor mismatches.(More)
Traditional hearing aids are limited by the absence of spatial selectivity. Superdirective microphone array can recover such limit, performing a spatial filtering to achieve an augmented SNR. We present Glassense, a platform hosting a double microphone array connected to a processing unit and mounted on the frame of common glasses. The platform has the(More)
Linear arrays steered to end-fire provide superdirective robust performance if a constraint is imposed on the white-noise gain. Filter-and-sum beamformers achieve the maximum constrained directivity by tuning their complex weights over the frequency. Delay-and-sum beamformers have simpler structures, but their weights are fixed and optimized at a given(More)
  • Diego Bastourre, Jorge Carrera, Javier Ibarlucia, José Fanelli, Gustavo Cañonero, Federico Traverso +3 others
  • 2009
This paper offers a framework aimed at improving our knowledge of those elements driving commodity prices. We employ a smooth transition vector autoregressive model suitable for testing the theoretical hypothesis derived from a heterogeneous agent model. The empirical methodology allows distinguishing among variables that influence long run prices(More)
Working on a unbalanced sample of OECD countries spanning the period 1970-2003, this paper contributes to the empirical literature on the Feldstein-Horioka puzzle by making three main innovations: First, it goes beyond the traditional national-level investment-saving equations to estimate, for the first time, regressions at the institutional sector level(More)
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