Publications related to Enabling Speech Applications using Ad Hoc Microphone Arrays

Single-Channel Indoor Microphone Localization

Martin Vetterli, Ivan Dokmanic, Reza Parhizkar

We propose a novel method for single-channel microphone localization inside a known room. Unlike other approaches, we take advantage of the room reverberation, which enables us to use only a single fixed loudspeaker to localize the microphone. Our method u ...

IEEE2014

Model-based Sparse Component Analysis for Reverberant Speech Localization

Hervé Bourlard, Volkan Cevher, Afsaneh Asaei, Mohammadjavad Taghizadeh

In this paper, the problem of multiple speaker localization via speech separation based on model-based sparse recovery is studies. We compare and contrast computational sparse optimization methods incorporating harmonicity and block structures as well as a ...

2014

Enhanced Diffuse Field Model for Ad Hoc Microphone Array Calibration

Hervé Bourlard, Philip Neil Garner, Mohammadjavad Taghizadeh

In this paper, we investigate the diffuse field coherence model for microphone array pairwise distance estimation. We study the fundamental constraints and assumptions underlying this approach and propose evaluation methodologies to measure the adequacy of ...

2014

Theoretical Analysis of Euclidean Distance Matrix Completion for Ad hoc Microphone Array Calibration

Mohammadjavad Taghizadeh

We consider the problem of ad~hoc microphone array calibration where the distance matrix consisted of all microphones pairwise distances have entries missing corresponding to distances greater than

d_{\text{max}}

. Furthermore, the known entries are noisy ...

Idiap2014

Perception and Reproduction of Auditory Spatial Impression

Andreas Walther

As audio reproduction systems evolve to incorporate many loudspeakers, the potential to evoke faithful auditory spatial impressions increases. Psychoacoustic principles of auditory spatial perception, and methods for production and reproduction of acoustic ...

EPFL2013

A Multipath Sparse Beamfroming Method

Hervé Bourlard, Volkan Cevher, Afsaneh Asaei

A novel formulation of beamforming is proposed for acquisition of the signals in reverberant acoustic clutter of interferences and noise. We derive the beamforming methods which incorporate the sparsity structure pertained to the acoustic source distributi ...

2013

Spatial Acoustic Signal Processing

Mihailo Kolundzija

A sound field on a line or in a plane has an effectively limited spatial bandwidth determined by the temporal frequency. Similar can be said for sound fields from far-field sources when analyzed on circular and spherical apertures. Namely, for a given freq ...

EPFL2012

Computational Methods For Structured Sparse Component Analysis of Convolutive Speech Mixtures

Hervé Bourlard, Volkan Cevher, Afsaneh Asaei

We cast the under-determined convolutive speech separation as sparse approximation of the spatial spectra of the mixing sources. In this framework we compare and contrast the major practical algorithms for structured sparse recovery of speech signal. Speci ...

2012

Computational Methods For Structured Sparse Component Analysis of Convolutive Speech Mixtures

Hervé Bourlard, Volkan Cevher, Afsaneh Asaei

We cast the under-determined convolutive speech separation as sparse approximation of the spatial spectra of the mixing sources. In this framework we compare and contrast the major practical algorithms for structured sparse recovery of speech signal. Speci ...

2012

Practical 3 dimensional sound reproduction using Wave Field Synthesis, theory and perceptual validation

Hervé Lissek, Xavier Falourd, Lukas Rohr

Sound ﬁeld reproduction using Wave Field Synthesis has been so far limited to the positioning of virtual sources and listeners in the horizontal plane only although the underlying formulation (Kirchhoﬀ-Helmholtz) describes the reproduction of 3 dimensional ...

Société Française d'Acoustique2012

Enabling Speech Applications using Ad Hoc Microphone Arrays

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Single-Channel Indoor Microphone Localization

Model-based Sparse Component Analysis for Reverberant Speech Localization

Enhanced Diffuse Field Model for Ad Hoc Microphone Array Calibration

Theoretical Analysis of Euclidean Distance Matrix Completion for Ad hoc Microphone Array Calibration

Perception and Reproduction of Auditory Spatial Impression

A Multipath Sparse Beamfroming Method

Spatial Acoustic Signal Processing

Computational Methods For Structured Sparse Component Analysis of Convolutive Speech Mixtures

Computational Methods For Structured Sparse Component Analysis of Convolutive Speech Mixtures

Practical 3 dimensional sound reproduction using Wave Field Synthesis, theory and perceptual validation

Single-Channel Indoor Microphone Localization

Model-based Sparse Component Analysis for Reverberant Speech Localization

Enhanced Diffuse Field Model for Ad Hoc Microphone Array Calibration

Perception and Reproduction of Auditory Spatial Impression

A Multipath Sparse Beamfroming Method

Theoretical Analysis of Euclidean Distance Matrix Completion for Ad hoc Microphone Array Calibration

Computational Methods For Structured Sparse Component Analysis of Convolutive Speech Mixtures

Spatial Acoustic Signal Processing

Computational Methods For Structured Sparse Component Analysis of Convolutive Speech Mixtures

Practical 3 dimensional sound reproduction using Wave Field Synthesis, theory and perceptual validation