Publications related to Bandlimiting

Sound Field Reconstruction: An Improved Approach For Wave Field Synthesis

Martin Vetterli, Mihailo Kolundzija, Christof Faller

Wave field synthesis (WFS) is a prevalent approach to multiple-loudspeaker sound reproduction for an extended listening area. Although powerful as a theoretical concept, its deployment is hampered by practical limitations due to diffraction, aliasing, and ...

2009

Polar Codes are Optimal for Lossy Source Coding

Rüdiger Urbanke, Satish Babu Korada

We consider lossy source compression of a binary symmetric source with Hamming distortion function. We show that polar codes combined with a low-complexity successive cancellation encoding algorithm achieve the rate-distortion bound. The complexity of both ...

2009

Exact reconstruction with directional wavelets on the sphere

Pierre Vandergheynst, Yves Wiaux, Jason Douglas McEwen

A new formalism is derived for the analysis and exact reconstruction of band-limited signals on the sphere with directional wavelets. It represents an evolution of a previously developed wavelet formalism developed by Antoine & Vandergheynst and Wiaux et a ...

2008

Robust fixed-order H infinity Controller Design for Spectral Models by Convex Optimization

Alireza Karimi, Roland Longchamp, Gorka Galdos Sanz de Galdeano

A new approach for robust fixed-order

H_\infty

controller design by convex optimization is proposed. Linear time-invariant single-input single-output systems represented by a finite set of complex values in the frequency domain are considered. It is show ...

IEEE2008

Inverse problems in acoustic tomography

Ivana Jovanovic

Acoustic tomography aims at recovering the unknown parameters that describe a field of interest by studying the physical characteristics of sound propagating through the considered field. The tomographic approach is appealing in that it is non-invasive and ...

EPFL2008

Tomographic approach for parametric estimation of local diffusive sources and application to heat diffusion

Martin Vetterli, Luciano Sbaiz, Ivana Jovanovic

We consider localized instantaneous sources that reside in a 2D dif- fusive environment. Our goal is to reconstruct the induced field from the measurements obtained by distributed sensors. Although the field is non-bandlimited, we capitalize on the fact th ...

2007

Fast spin +-2 spherical harmonics transforms and application in cosmology

Pierre Vandergheynst, Yves Wiaux, Laurent Jacques

A fast and exact algorithm is developed for the spin +-2 spherical harmonics transforms on equi-angular pixelizations on the sphere. It is based on the Driscoll and Healy fast scalar spherical harmonics transform. The theoretical exactness of the transform ...

2007

Logarithmic transformation technique for exact signal recovery in frequency-domain optical-coherence tomography - art. no. 662714

Michaël Unser

We address the problem of exact signal recovery in frequency-domain optical-coherence tomography (FDOCT). The standard technique for tomogram reconstruction is the inverse Fourier transform. However, the inverse Fourier transform is known to yield autocorr ...

Spie-Int Soc Optical Engineering, Po Box 10, Bellingham, Wa 98227-0010 Usa2007

Logarithmic Transformation Technique for Exact Signal Recovery in Frequency-Domain Optical-Coherence Tomography

Michaël Unser, Rainer Leitgeb

We address the problem of exact signal recovery in frequency-domain optical-coherence tomography (FDOCT). The standard technique for tomogram reconstruction is the inverse Fourier transform. However, the inverse Fourier transform is known to yield autocorr ...

SPIE2007

Robust Controller Design by Linear Programming with Application to a Double-Axis Positioning System

Alireza Karimi, Roland Longchamp, Marc Kunze

A linear programming approach is proposed to tune fixed-order linearly parameterized controllers for stable LTI plants. The method is based on the shaping of the open-loop transfer function in the Nyquist diagram. A lower bound on the crossover frequency a ...

2007

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Sound Field Reconstruction: An Improved Approach For Wave Field Synthesis

Polar Codes are Optimal for Lossy Source Coding

Exact reconstruction with directional wavelets on the sphere

Robust fixed-order H infinity Controller Design for Spectral Models by Convex Optimization

Inverse problems in acoustic tomography

Tomographic approach for parametric estimation of local diffusive sources and application to heat diffusion

Fast spin +-2 spherical harmonics transforms and application in cosmology

Logarithmic transformation technique for exact signal recovery in frequency-domain optical-coherence tomography - art. no. 662714

Logarithmic Transformation Technique for Exact Signal Recovery in Frequency-Domain Optical-Coherence Tomography

Robust Controller Design by Linear Programming with Application to a Double-Axis Positioning System

Sound Field Reconstruction: An Improved Approach For Wave Field Synthesis

Logarithmic transformation technique for exact signal recovery in frequency-domain optical-coherence tomography - art. no. 662714

Logarithmic Transformation Technique for Exact Signal Recovery in Frequency-Domain Optical-Coherence Tomography

Robust fixed-order H infinity Controller Design for Spectral Models by Convex Optimization

Fast spin +-2 spherical harmonics transforms and application in cosmology

Polar Codes are Optimal for Lossy Source Coding

Exact reconstruction with directional wavelets on the sphere

Inverse problems in acoustic tomography

Tomographic approach for parametric estimation of local diffusive sources and application to heat diffusion

Robust Controller Design by Linear Programming with Application to a Double-Axis Positioning System